WO2020209645A1 - 프로그램화된 세포 사멸 단백질 리간드-1 (pd-l1)에 대한 항체 및 이의 용도 - Google Patents
프로그램화된 세포 사멸 단백질 리간드-1 (pd-l1)에 대한 항체 및 이의 용도 Download PDFInfo
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- A61K47/6849—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a receptor, a cell surface antigen or a cell surface determinant
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- C07K16/24—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
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- C07K16/28—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2803—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
- C07K16/2818—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily against CD28 or CD152
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- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
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- A61K39/00—Medicinal preparations containing antigens or antibodies
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- A61K2039/507—Comprising a combination of two or more separate antibodies
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- C07K2317/56—Immunoglobulins specific features characterized by immunoglobulin fragments variable (Fv) region, i.e. VH and/or VL
- C07K2317/565—Complementarity determining region [CDR]
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- C07K2317/92—Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value
Definitions
- the present invention relates to an antibody against PD-L1 (Programmed death-ligand 1) or an antigen-binding fragment thereof, a nucleic acid encoding the same, a vector containing the nucleic acid, a cell transformed with the vector, the antibody or antigen-binding fragment thereof. It relates to a manufacturing method, a composition for preventing or treating cancer comprising the same, and a composition for combined administration.
- PD-L1 is a type 1 transmembrane protein with two Ig-like domains, a transmembrane domain and a short cytoplasmic domain at the extracellular site.
- the cytoplasmic domain does not have a known signal transduction motif, indicating that PD-L1 has no signaling for its interaction with its receptor. Its molecular weight is 40 kDa (290 amino acids) and is encoded (encoded) by the CD274 gene on mouse chromosome 19 and human chromosome 9, respectively.
- PD-L1 is a member of the B7 protein family and shares about 20% amino acid sequence identity with B7.1 and B7.2. Human PD-L1 shares 70% and 93% amino acid identity with PD-L1 of murine and cynomolgus orthologs, respectively.
- PD-L1 binds to its receptor PD-1 with an affinity (KD) of 770 nM.
- KD affinity
- PD-1 is expressed on activated T cells, B cells and bone marrow cells and regulates the activation or inhibition of cellular immune responses.
- PD-L1 expression by cells can mediate protection against cytotoxic T lymphocyte (CTL) killing, which is a regulatory mechanism that slows the chronic immune response during viral infection.
- CTL cytotoxic T lymphocyte
- Cancers such as chronic and pro-inflammatory diseases, evade host immune responses by overturning this immune-protective pathway through up-regulation of PD-L1 expression.
- IFN ⁇ also upregulates the expression of PD-L1.
- PD-L1 also mediates immune suppression through interaction with another protein, B7.1 (also known as CD80), thereby exerting its ability to transmit one of the secondary signals of activation on T cells via CD28. Block. In terms of PD-L1 expression on tumor cells and engagement with B7.1, the relevance for this specific interaction in tumor immune resistance is still unclear.
- B7.1 also known as CD80
- the immune function of our body regulates overall T lymphocyte function through the regulation of simultaneous stimulation signals and simultaneous inhibition signals as well as antigen recognition. This regulatory mechanism is called an immune checkpoint.
- the immune function of our body detects tumor-specific neo-antigens expressed due to changes such as mutations occurring in tumor cells, and thereby removes tumor cells or virus infectious agents.
- tumor cells suppress immune function by changing the tumor micro-environment, or through T cell immune tolerance or immuno-editing. Do immune escape.
- the function of tumor-specific T lymphocytes is suppressed through changes in immune checkpoint function.
- the attack of tumor-specific T-lymphocyte cells is avoided.
- a monoclonal antibody against PD-1 or the ligand PD-L1 to inhibit its function, an antitumor effect can be obtained by enhancing the suppressed tumor-specific T-lymphocyte cell activity and effect.
- the inventors of the present application tried to develop an antibody that specifically binds to PD-L1.
- the present inventors developed an anti-PD-L1 antibody that binds to PD-L1 with high affinity, and the anti-PD-L1 antibody inhibits the formation of the PD-1/PD-L1 complex, thereby It was confirmed that it can serve as an anticancer agent, and the present invention was completed.
- An object of the present invention is to provide a novel antibody or antigen-binding fragment thereof against PD-L1.
- Another object of the present invention is to provide a nucleic acid encoding the antibody or antigen-binding fragment thereof.
- Another object of the present invention is to provide a vector containing the nucleic acid, a cell transformed with the vector, and a method for producing the same.
- Another object of the present invention is to provide a composition for preventing or treating cancer or infectious diseases, including the antibody or antigen-binding fragment thereof.
- Another object of the present invention is to provide a composition for combined administration for preventing or treating cancer by administering the antibody or antigen-binding fragment thereof with another anticancer agent.
- the present invention is a heavy chain CDR1 comprising a sequence having 90% or more sequence homology to the sequence of SEQ ID NO: 1, a heavy chain comprising a sequence having 90% or more sequence homology to the sequence of SEQ ID NO: 2 CDR2, a heavy chain comprising a sequence having 90% or more sequence homology to the sequence of SEQ ID NO: 3 or SEQ ID NO: 11 CDR3, a light chain comprising a sequence having 90% or more sequence homology to the sequence of SEQ ID NO: 5 or SEQ ID NO: 13 CDR1, light chain CDR2 comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 6, PD-L1 comprising a light chain CDR3 comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 7
- An antibody or antigen-binding fragment thereof that binds to is provided.
- the present invention also provides a nucleic acid encoding the antibody or antigen-binding fragment thereof.
- the present invention also provides a vector comprising the nucleic acid.
- the present invention also provides a cell transformed with the vector.
- the present invention also provides a method for preparing the antibody or antigen-binding fragment thereof comprising the following steps: (a) culturing the cells; And (b) recovering the antibody or antigen-binding fragment thereof from the cultured cells.
- the present invention also provides a composition for preventing or treating cancer comprising the antibody or antigen-binding fragment thereof as an active ingredient.
- the present invention also provides a composition for combined administration for preventing or treating cancer by administering the antibody or antigen-binding fragment thereof with another anticancer agent.
- FIG. 2 shows the results of FACS experiments of representative antibody clones against 293T cells artificially expressing human PD-L1 gene on the surface for analysis of the cell surface antigen protein binding characteristics of PD-L1 binding antibody clones.
- 3 is an SPR-based performance evaluation test method for confirming PD-1/PD-L1 binding inhibitory ability for nine representative antibody clones, with antibody samples compared to a solution condition (blue line) containing only PD-L1 antigen protein. It shows the result of verifying the change of SPR Sensorgram when included.
- FIG. 4 shows the result of analyzing the binding characteristics of the IgG-type PD-L1 target antibody candidates to the mouse PD-L1 protein using the mIFN- ⁇ -treated mouse colon cancer cell line MC38.
- FIG. 8 shows the results of confirming the ability to increase immune cell activity for the KL001-13 candidate antibody selected after affinity maturation of the candidate antibody.
- FIG. 11 shows the results of measuring the binding force values for human PD-L1 and mouse PD-L1 with respect to the selection antibody using the Biacore equipment.
- FIG. 15 shows the results of verifying the in vivo anticancer effect on the combination treatment of CTLA-4 antibody (9D9) and KL001-13 antibody or MPDL3280A comparative antibody.
- Figure 16 shows the sequence of the CDR of the antibody according to the present invention when the numbering scheme other than the IMGT numbering scheme is followed.
- 17 shows the cross-reactivity of the antibody according to the present invention to humans, mice, monkeys and dogs.
- the present invention is a heavy chain CDR1 comprising a sequence having 90% or more sequence homology to the sequence of SEQ ID NO: 1, a heavy chain CDR2 comprising a sequence having 90% or more sequence homology to the sequence of SEQ ID NO: 2, sequence Heavy chain CDR3 comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 3 or SEQ ID NO: 11, light chain CDR1 comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 5 or SEQ ID NO: 13, sequence Light chain CDR2 comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 6, comprising a light chain CDR3 comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 7, which binds to PD-L1 It relates to an antibody or antigen-binding fragment thereof.
- PD-L1 herein is a ligand for the immunosuppressive receptor “programmed death receptor 1 (PD-1)", which is mainly expressed on activated T and B cells, and PD-1 and the ligand PD-L1 and/ Alternatively, when PD-L2 binds, antigen receptor signaling can be negatively regulated.
- Ligands for PD-1 (PD-L1 and PD-L2) can be constitutively expressed or induced in a number of cell types, including non-hematopoietic tissues and various tumor types.
- PD-L1 is expressed on B cells, T cells, bone marrow cells and dendritic cells (DCs), but is also expressed on peripheral cells, like microvascular endothelial cells and non-lymphatic organs such as the heart, lungs, and the like.
- PD-L2 is only found on macrophages and dendritic cells.
- the expression pattern of the PD-1 ligand suggests the role of PD-1 in maintaining peripheral resistance and may contribute to modulating the self-reactive T-cell and B-cell responses in the peripheral.
- PD-L1, PD-L2 are type 1 transfer membrane receptors containing both IgV- and IgC-like domains in the extracellular domain. Both ligands contain short cytoplasmic regions with unknown signaling motifs.
- Blocking the PD-1/PD-L1 interaction has been shown to increase T cell proliferation and cytokine production, and block cell cycle progression. Blocking of the PD-1/PD-L1 interaction can induce enhanced tumor-specific T-cell immunity, and thus may be helpful in clearing tumor cells by the immune system.
- HIV-specific CD8+ T cells are functionally impaired, exhibiting a decrease in the ability to produce cytokines and effector molecules and a decrease in the ability to proliferate, and PD-1 is HIV-specific in HIV-infected individuals. It is highly expressed on enemy CD8+ T cells.
- By blocking the PD-1/PD-L1 interaction by enhancing the ability of HIV-specific T cells to proliferate and produce cytokines in response to HIV peptide stimulation, T cell activity or It can increase antiviral immune response.
- antibody refers to an anti-PD-L1 antibody that specifically binds to PD-L1.
- the scope of the present invention includes not only the complete antibody form that specifically binds to PD-L1, but also the antigen-binding fragment of the antibody molecule.
- a complete antibody is a structure having two full-length light chains and two full-length heavy chains, and each light chain is linked to a heavy chain by a disulfide bond.
- the heavy chain constant region has gamma ( ⁇ ), mu ( ⁇ ), alpha ( ⁇ ), delta ( ⁇ ), and epsilon ( ⁇ ) types, and subclasses gamma 1 ( ⁇ 1), gamma 2 ( ⁇ 2), and gamma 3 ( ⁇ 3). ), gamma4( ⁇ 4), alpha1( ⁇ 1) and alpha2( ⁇ 2).
- the constant region of the light chain has kappa ( ⁇ ) and lambda ( ⁇ ) types.
- the antigen-binding fragment or antibody fragment of an antibody means a fragment having an antigen-binding function, and includes Fab, F(ab'), F(ab')2, Fv, and the like.
- Fab has a structure having a light chain and a heavy chain variable region, a light chain constant region, and a heavy chain first constant region (CH1), and has one antigen-binding site.
- Fab' is a hinge region comprising one or more cysteine residues at the C-terminus of the heavy chain CH1 domain.
- F(ab')2 antibodies are generated by disulfide bonds between cysteine residues in the hinge region of Fab'.
- Fv is the smallest antibody fragment having only a heavy chain variable region and a light chain variable region.
- the double-chain Fv (two-chain Fv) is a non-covalent bond where the heavy chain variable region and the light chain variable region are connected, and the single-chain Fv (scFv) is generally a heavy chain variable region and a light chain variable region through a peptide linker. It is linked by this covalent bond or is directly linked at the C-terminus, so that it can form a dimer-like structure like a double-chain Fv.
- Such antibody fragments can be obtained using proteolytic enzymes (e.g., restriction digestion of the whole antibody with papain yields Fab, and digestion with pepsin yields F(ab')2 fragments), and gene It can also be produced through recombinant technology.
- proteolytic enzymes e.g., restriction digestion of the whole antibody with papain yields Fab, and digestion with pepsin yields F(ab')2 fragments
- gene It can also be produced through recombinant technology.
- the antibody according to the invention is in the Fv form (eg scFv) or in the complete antibody form.
- the heavy chain constant region may be selected from any one isotype of gamma ( ⁇ ), mu ( ⁇ ), alpha ( ⁇ ), delta ( ⁇ ), or epsilon ( ⁇ ).
- the constant region is gamma 1 (IgG1), gamma 3 (IgG3), or gamma 4 (IgG4).
- the light chain constant region may be of kappa or lambda type.
- the term “heavy chain” refers to a full-length heavy chain comprising a variable region domain VH and three constant region domains CH1, CH2 and CH3 comprising an amino acid sequence having a sufficient variable region sequence to impart specificity to an antigen. And fragments thereof.
- the term “light chain” as used herein refers to a full-length light chain including a variable region domain VL and a constant region domain CL including an amino acid sequence having a sufficient variable region sequence to impart specificity to an antigen, and fragments thereof. It all means.
- Antibodies of the present invention include monoclonal antibodies, multispecific antibodies, human antibodies, humanized antibodies, chimeric antibodies, single chain Fvs (scFV), single chain antibodies, Fab fragments, F(ab') fragments, disulfide-binding Fvs (sdFV) And an anti-idiotype (anti-Id) antibody, or an epitope-binding fragment of the antibodies, but is not limited thereto.
- the monoclonal antibody refers to an antibody obtained from a population of substantially homogeneous antibodies, i.e. the individual antibodies occupying the population are identical except for possible naturally occurring mutations that may be present in trace amounts. Monoclonal antibodies are highly specific and are thus directed against a single antigenic site. In contrast to conventional (polyclonal) antibody preparations, which typically contain different antibodies directed against different determinants (epitopes), each monoclonal antibody is directed against a single determinant on the antigen.
- Epitope refers to a protein determinant to which an antibody can specifically bind. Epitopes are usually composed of a group of chemically active surface molecules, such as amino acids or sugar side chains, and generally have specific three-dimensional structural characteristics as well as specific charge characteristics. Stereoscopic epitopes and non-stereoscopic epitopes are distinguished in that the bond to the former is lost in the presence of a denaturing solvent, but not to the latter.
- a non-human antibody in its "humanized” form is a chimeric antibody that contains a minimal sequence derived from a non-human (eg murine) immunoglobulin.
- humanized antibodies are non-human species (donor antibodies), e.g. mice, rats, rabbits or non-humans that retain the desired specificity, affinity and ability for residues from the hypervariable region of the recipient. It is a human immunoglobulin (receptor antibody) that has been replaced by a residue from the hypervariable region of primates.
- Human antibody is a molecule derived from human immunoglobulin and means that all amino acid sequences constituting an antibody including complementarity determining regions and structural regions are composed of human immunoglobulins.
- a portion of the heavy and/or light chain is derived from a particular species or is identical or homologous to the corresponding sequence in an antibody belonging to a particular antibody class or subclass, while the remaining chain(s) are derived from another species or from another antibody class or Included are "chimeric" antibodies (immunoglobulins) that are identical to or homologous to the corresponding sequence in the subclass of antibodies, as well as fragments of such antibodies that exhibit the desired biological activity.
- Antibody variable domain refers to the light and heavy chain portions of an antibody molecule comprising the amino acid sequences of the complementarity determining regions (CDRs; ie, CDR1, CDR2, and CDR3), and framework regions (FR).
- CDRs complementarity determining regions
- FR framework regions
- VH refers to the variable domain of the heavy chain.
- VL refers to the variable domain of the light chain.
- CDR complementarity determining region
- the present invention comprises a heavy chain CDR1 comprising the sequence of SEQ ID NO: 1, a heavy chain CDR2 comprising the sequence of SEQ ID NO: 2, a heavy chain CDR3 comprising the sequence of SEQ ID NO: 3 or SEQ ID NO: 11, a sequence of SEQ ID NO: 5 or SEQ ID NO: 13
- a heavy chain CDR1 comprising the sequence of SEQ ID NO: 1
- a heavy chain CDR2 comprising the sequence of SEQ ID NO: 2
- a heavy chain CDR3 comprising the sequence of SEQ ID NO: 3 or SEQ ID NO: 11
- a sequence of SEQ ID NO: 5 or SEQ ID NO: 13 Includes an antibody or antigen-binding fragment thereof that binds to PD-L1, including light chain CDR1 comprising, light chain CDR2 comprising the sequence of SEQ ID NO: 6, and light chain CDR3 comprising the sequence of SEQ ID NO: 7 (used in this patent CDR numbering scheme follows'IMGT numbering').
- the antibody or antigen-binding fragment thereof that binds to PD-L1 is a heavy chain variable region comprising a heavy chain CDR1 of SEQ ID NO: 1, a heavy chain CDR2 of SEQ ID NO: 2, and a heavy chain CDR3 of SEQ ID NO: 3, or SEQ ID NO: It may include a heavy chain variable region including the heavy chain CDR1 of 1, the heavy chain CDR2 of SEQ ID NO: 2, and the heavy chain CDR3 of SEQ ID NO: 11.
- the antibody or antigen-binding fragment thereof that binds to PD-L1 is a light chain variable region comprising a light chain CDR1 of SEQ ID NO: 5, a light chain CDR2 of SEQ ID NO: 6, and a light chain CDR3 of SEQ ID NO: 7, or SEQ ID NO: It may include a light chain variable region including the light chain CDR1 of 13, the light chain CDR2 of SEQ ID NO: 6, and the light chain CDR3 of SEQ ID NO: 7.
- the antibody or antigen-binding fragment thereof that binds to PD-L1 is a heavy chain variable region comprising a heavy chain CDR1 of SEQ ID NO: 1, a heavy chain CDR2 of SEQ ID NO: 2, and a heavy chain CDR3 of SEQ ID NO: 3, A light chain variable region comprising a light chain CDR1 of SEQ ID NO: 5, a light chain CDR2 of SEQ ID NO: 6, and a light chain CDR3 of SEQ ID NO: 7; or
- FR “Skeletal regions” are variable domain residues other than CDR residues. Each variable domain typically has 4 FRs identified as FR1, FR2, FR3 and FR4.
- the binding affinity of the PD-L1 antibody is in the range of 10 -5 M to 10 -12 M.
- the binding affinity of the PD-L1 antibody is 10 -6 M to 10 -12 M, 10 -7 M to 10 -12 M, 10 -8 M to 10 -12 M, 10 -9 M to 10 -12 M, 10 -10 M to 10 -12 M, 10 -11 M to 10 -12 M, 10 -5 M to 10 -11 M, 10 -6 M to 10 -11 M, 10 -7 M to 10 -11 M, 10 -8 M to 10 -11 M, 10 -9 M to 10 -11 M, 10 -10 M to 10 -11 M, 10 -5 M to 10 -10 M, 10 -6 M to 10 -10 M, 10 -7 M to 10 -10 M, 10 -8 M to 10 -10 M, 10 -9 M to 10 -10 M, 10 -5 M to 10 -10 M, 10 -6 M to 10 -10 M, 10 -7 M to 10 -10 M, 10 -8 M to 10 -10 M, 10 -9 M
- the antibody or antigen-binding fragment thereof that binds to PD-L1 may include a heavy chain variable region comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 4 or 12.
- the antibody or antigen-binding fragment thereof that binds to PD-L1 may include a heavy chain variable region of SEQ ID NO: 4 or SEQ ID NO: 12.
- the antibody or antigen-binding fragment thereof that binds to PD-L1 may include a light chain variable region comprising a sequence having 90% or more sequence homology with the sequence of SEQ ID NO: 8 or SEQ ID NO: 14.
- the definition of the CDR sequence (region) may vary slightly for antibodies having the same variable region according to the numbering method.
- the CDR sequences may be defined differently in the same variable region according to the numbering method.
- the CDR sequence of the antibody according to the present invention has the sequence shown in Table 3 when following a numbering method other than the IMGT numbering method (see FIG. 16).
- the antibody according to the present invention exhibits cross-reactivity in humans and mice, and in humans and non-human mammals.
- the non-human mammal may be a monkey or a dog (FIG. 17).
- “Phage display” is a technique for displaying a variant polypeptide as a fusion protein with at least a portion of an envelope protein on the surface of a phage, eg, fibrous phage particle.
- the usefulness of phage display lies in the fact that it can quickly and efficiently classify sequences that bind to a target antigen with high affinity, targeting a large library of randomized protein variants. Displaying peptide and protein libraries on phage has been used to screen millions of polypeptides to identify polypeptides with specific binding properties.
- Phage display technology has provided a powerful tool for generating and selecting new proteins that bind to specific ligands (eg antigens).
- a large library of protein variants can be created and sequences that bind with high affinity to the target antigen can be quickly sorted.
- the nucleic acid encoding the variant polypeptide is fused with a nucleic acid sequence encoding a viral envelope protein, for example a gene III protein or gene VIII protein.
- a monovalent phage display system has been developed in which a nucleic acid sequence encoding a protein or polypeptide is fused with a nucleic acid sequence encoding a portion of a gene III protein. In monovalent phage display systems, gene fusions are expressed at low levels and wild-type gene III protein is also expressed to maintain particle infectivity.
- Phage display technology has several advantages over conventional hybridoma and recombinant methods for making antibodies with the desired characteristics. This technique makes it possible to generate large antibody libraries with various sequences in a short time without using animals. The production of hybridomas or the production of humanized antibodies may require several months of production. In addition, since immunity is not required at all, phage antibody libraries can generate antibodies even against toxic or low antigenic antigens. Phage antibody libraries can be used to generate and identify novel therapeutic antibodies.
- a technique capable of identifying and isolating high affinity antibodies from phage display libraries is important for the separation of novel antibodies for treatment.
- Isolation of high affinity antibodies from the library can depend on the size of the library, the efficiency of production in bacterial cells and the diversity of the library.
- the size of the library is reduced by improper folding of the antibody or antigen binding protein and inefficient production due to the presence of stop codons.
- Expression in bacterial cells can be inhibited if the antibody or antigen binding domain is not properly folded.
- Expression can be improved by alternating residues on the surface of the variable/constant interface or at selected CDR residues.
- the sequence of the framework region is one element to provide proper folding when generating antibody phage libraries in bacterial cells.
- CDR3 regions have been found to often participate in antigen binding. Since the CDR3 region on the heavy chain varies considerably in size, sequence, and structural conformation, various libraries can be prepared using it.
- diversity can be generated by randomizing the CDR regions of the variable heavy and light chains using all 20 amino acids at each position. Using all 20 amino acids can result in a highly diverse variant antibody sequence and an increased chance of identifying a new antibody.
- the antibody or antibody fragment of the present invention may include not only the sequence of the anti-PD-L1 antibody of the present invention described herein, but also a biological equivalent thereof within a range that can specifically recognize PD-L1.
- additional changes can be made to the amino acid sequence of the antibody to further improve the binding affinity and/or other biological properties of the antibody.
- Such modifications include, for example, deletions, insertions and/or substitutions of amino acid sequence residues of the antibody.
- These amino acid variations are made based on the relative similarity of amino acid side chain substituents, such as hydrophobicity, hydrophilicity, charge, size, and the like.
- arginine, lysine and histidine are all positively charged residues; Alanine, glycine and serine have similar sizes; It can be seen that phenylalanine, tryptophan and tyrosine have similar shapes. Thus, based on these considerations, arginine, lysine and histidine; Alanine, glycine and serine; And phenylalanine, tryptophan, and tyrosine are biologically functional equivalents.
- the antibody of the present invention or a nucleic acid molecule encoding the same is interpreted as including a sequence showing substantial identity to the sequence described in SEQ ID NO:
- the actual identity of the above is at least 90% when the sequence of the present invention and any other sequence are aligned to correspond as much as possible, and the aligned sequence is analyzed using an algorithm commonly used in the art. It means a sequence showing homology, most preferably at least 95% homology, 96% or more, 97% or more, 98% or more, 99% or more homology. Alignment methods for sequence comparison are known in the art.
- NCBI Basic Local Alignment Search Tool is accessible from NBCI, etc., and can be used in conjunction with sequence analysis programs such as blastp, blasm, blastx, tblastn and tblastx on the Internet.
- the BLSAT is accessible at www.ncbi.nlm.nih.gov/BLAST/.
- a method for comparing sequence homology using this program can be found at www.ncbi.nlm.nih.gov/BLAST/blast_help.html.
- the antibody or antigen-binding fragment thereof of the invention is 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98% compared to the specified sequence or all of the sequences described in the specification. , 99%, or more homology.
- homology can be determined by sequence comparison and/or alignment by methods known in the art. For example, sequence comparison algorithms (ie, BLAST or BLAST 2.0), manual alignment, visual inspection can be used to determine the percent sequence homology of the nucleic acids or proteins of the invention.
- the present invention relates to a nucleic acid encoding the antibody or antigen-binding fragment thereof.
- the nucleic acid encoding the antibody or antigen-binding fragment thereof of the present invention can be isolated to produce the antibody or antigen-binding fragment thereof recombinantly.
- the nucleic acid is isolated and inserted into a replicable vector for further cloning (amplification of DNA) or for further expression. Based on this, the present invention relates to a vector comprising the nucleic acid in another aspect.
- Nucleic acid has the meaning of comprehensively including DNA (gDNA and cDNA) and RNA molecules, and nucleotides, which are basic structural units in nucleic acids, include not only natural nucleotides, but also analogs with modified sugar or base sites. .
- the sequence of the nucleic acid encoding the heavy and light chain variable regions of the present invention can be modified. Such modifications include additions, deletions, or non-conservative or conservative substitutions of nucleotides.
- Vector components generally include, but are not limited to, one or more of the following: signal sequence, origin of replication, one or more marker genes, enhancer elements, promoters, and transcription termination sequences.
- vector refers to a plasmid vector as a means for expressing a gene of interest in a host cell; Cozmid vector; Viral vectors such as bacteriophage vectors, adenovirus vectors, retroviral vectors and adeno-associated viral vectors, and the like.
- the nucleic acid encoding the antibody in the vector is operably linked to a promoter.
- “Operatively linked” refers to a functional linkage between a nucleic acid expression control sequence (eg, a promoter, a signal sequence, or an array of transcriptional regulatory factor binding sites) and another nucleic acid sequence, whereby the control sequence is the other nucleic acid Control the transcription and/or translation of the sequence.
- a nucleic acid expression control sequence eg, a promoter, a signal sequence, or an array of transcriptional regulatory factor binding sites
- a strong promoter capable of promoting transcription e.g., tac promoter, lac promoter, lacUV5 promoter, lpp promoter, pL ⁇ promoter, pR ⁇ promoter, rac5 promoter, amp promoter, recA promoter, SP6 promoter, trp promoter and T7 promoter, etc.
- ribosome binding sites for initiation of translation e.g., amp promoter, recA promoter, SP6 promoter, trp promoter and T7 promoter, etc.
- promoters derived from the genome of mammalian cells eg, metallotionine promoter, ⁇ -actin promoter, human heroglobin promoter, and human muscle creatine promoter
- mammalian Promoters derived from animal viruses e.g., adenovirus late promoter, vaccinia virus 7.5K promoter, SV40 promoter, cytomegalovirus (CMV) promoter, tk promoter of HSV, mouse mammary tumor virus (MMTV) promoter, LTR promoter of HIV
- adenovirus late promoter e.g., adenovirus late promoter, vaccinia virus 7.5K promoter, SV40 promoter, cytomegalovirus (CMV) promoter, tk promoter of HSV, mouse mammary tumor virus (MMTV) promoter, LTR promoter of HIV
- Moloney virus promoter Epsteinbar virus (EBV) promoter and Loose sacoma virus (RSV) promoter may
- the vector may be fused with other sequences to facilitate purification of the antibody expressed therefrom.
- Sequences to be fused include, for example, glutathione S-transferase (Pharmacia, USA), maltose binding protein (NEB, USA), FLAG (IBI, USA) and 6x His (hexahistidine; Quiagen, USA).
- the vector contains an antibiotic resistance gene commonly used in the art as a selection marker, for example, for ampicillin, gentamicin, carbenicillin, chloramphenicol, streptomycin, kanamycin, geneticin, neomycin, and tetracycline. There is a resistance gene.
- the present invention relates to cells transformed with the aforementioned vectors.
- Cells used to generate the antibodies of the present invention may be prokaryotic, yeast or higher eukaryotic cells, but are not limited thereto.
- Strains of the genus Bacillus such as Escherichia coli, Bacillus subtilis and Bacillus thuringensis, Streptomyces, Pseudomonas (e.g., Pseudomonas putida), Proteus Prokaryotic host cells such as Proteus mirabilis and Staphylococcus (eg, Staphylocus carnosus) can be used.
- Bacillus such as Escherichia coli, Bacillus subtilis and Bacillus thuringensis, Streptomyces, Pseudomonas (e.g., Pseudomonas putida)
- Proteus Prokaryotic host cells such as Proteus mirabilis and Staphylococcus (eg, Staphylocus carnosus) can be used.
- the cells can be cultured in various media. Among commercially available media, it can be used as a culture media without limitation. All other essential supplements known to those skilled in the art may also be included in suitable concentrations. Culture conditions, such as temperature, pH, etc., have already been used with host cells selected for expression, which will be apparent to those skilled in the art.
- the antibody or antigen-binding fragment thereof may be recovered by removing impurities by, for example, centrifugation or ultrafiltration, and the resultant may be purified using, for example, affinity chromatography. Further other purification techniques such as anion or cation exchange chromatography, hydrophobic interaction chromatography, hydroxylapatite chromatography, and the like can be used.
- the present invention relates to a composition for preventing or treating cancer comprising the antibody as an active ingredient.
- the present invention provides, for example, (a) a pharmaceutically effective amount of an antibody against PD-L1 according to the present invention or an antigen-binding fragment thereof; And (b) may be a pharmaceutical composition for the prevention or treatment of cancer comprising a pharmaceutically acceptable carrier.
- the present invention also relates to a method for preventing or treating cancer comprising administering an antibody against PD-L1 according to the present invention or an antigen-binding fragment thereof in an effective amount necessary for a patient.
- composition uses the above-described anti-PD-L1 antibody or antigen-binding fragment thereof of the present invention as an active ingredient, descriptions in common between the two are omitted.
- T cell depletion is a condition of T cell dysfunction that can occur in chronic infections and cancer. It is defined as poor effector function, persistent expression of inhibitory receptors, and transcriptional states different from functional effectors or memory T cells. Depletion interferes with the management of infection and tumor progression.
- the antibody or antigen-binding fragment thereof of the present invention binds with high affinity to PD-L1 and inhibits the formation of a PD-1 and PD-L1 complex, thereby avoiding anti-tumor T cell activity. It can be usefully used to treat cancer that induces T cell depletion.
- the present invention also relates to a composition for combined administration for preventing or treating cancer by administering the antibody or antigen-binding fragment thereof according to the present invention with another anticancer agent.
- the present invention provides, for example, (a) a pharmaceutically effective amount of an antibody against PD-L1 according to the present invention or an antigen-binding fragment thereof; And (b) may be a composition for combined administration for preventing or treating cancer comprising a pharmaceutically acceptable carrier.
- the present invention also relates to a combined administration method for the prevention or treatment of cancer comprising administering an antibody against PD-L1 according to the present invention or an antigen-binding fragment thereof in an effective amount required to a patient.
- composition uses the above-described anti-PD-L1 antibody or antigen-binding fragment thereof of the present invention as an active ingredient, descriptions in common between the two are omitted.
- an anticancer therapeutic agent other than the antibody according to the present invention in combination, it is possible to effectively target tumor cells overexpressing PD-L1, increase anti-tumor T cell activity, and increase an immune response targeting tumor cells. .
- anti-neoplastic or immunogenic agents e.g., weakened cancer cells, tumor antigens (including recombinant proteins, peptides and carbohydrate molecules), antigen transfer cells, such as antigens or nucleic acids of tumor origin
- Dendritic cells immune-stimulating cytokines (e.g., IL-2, IFN ⁇ 2, GM-CSF), and cells transfected with genes encoding immune-stimulating cytokines (e.g., including GM-CSF, but Not limited thereto)]
- Cells containing antibodies targeting cancer antigens eg, CAR-T, CAR-NK
- immunosuppression inhibitors of the tumor microenvironment eg, IDO inhibitor
- Standard cancer therapy eg, chemotherapy, radiotherapy or surgery
- cancer-related antigens can be used.
- the antibody or antigen-binding fragment thereof according to the present invention is another antibody (antibodies other than the PD-L1 antibody, such as VEGF, EGFR, Her2/neu, VEGF receptor, other growth factor receptor, CD20, CD40, CTLA-4 , OX-40, 4-IBB, and ICOS can be exemplified, but not limited thereto).
- antibodies other than the PD-L1 antibody such as VEGF, EGFR, Her2/neu, VEGF receptor, other growth factor receptor, CD20, CD40, CTLA-4 , OX-40, 4-IBB, and ICOS can be exemplified, but not limited thereto).
- antibodies that can be used together with the antibody or antigen-binding fragment thereof according to the present invention may be used without limitation as long as it is an antibody capable of specifically binding to an antigen associated with cancer or autoimmune disease, and such antigens include 4-1BB, Integrin, angiopoetin, angiopoetin analog 3, B-cell activating factor (BAFF), B7-H3, CCR4, CD3, CD4, CD6, CD11a, CD19, CD20, CD22, CD30, CD33 , CD38, CD40, CD52, CD62, CD79b, CD80, CGRP, OX-40, ICOS, claudin18 (Claudin-18), CTLA4, DLL3, EGF receptor, Fc receptor, FGF23, folate receptor, GD2, GM-CSF, HER2, Her2/neu, HER3, VEGF, VEGF receptor, interferon receptor, interferon gamma, IgE, IGF-1 receptor, interleukin 1, interleukin 2 receptor, interle
- the antibody that binds to the antigen is
- Antibodies against 4-1BB include Utomilumab;
- Antibodies against integrin include Natalizumab, Etrolizumab, Vedolizumab, and Bimagrumab;
- Antibodies against amyloid beta include Bapineuzumab, Crenezumab, Solanezumab, Aducanumab, Gantenerumab;
- Antibodies against angiopoetin were AMG 780;
- Antibodies against angiopoetin analog 3 include Evinacumab;
- Antibodies against B-cell activating factor include: tabalumab, lanalumab, and berrymumab;
- Antibodies against B7-H3 include omburtamab
- Antibodies against CCR4 include Mogamulizumab
- Antibodies against CD3 include Otelixizumab, Teplizumab, Muromonap, and Tebentafusp, a dual antibody against GP100 and CD3, and a dual antibody against CD19 and CD3.
- Antibodies against CD4 include Ibalizumab, Zanolimumab;
- Antibodies against CD6 include itolizumab;
- Antibodies against CD11a include Efalizumab;
- Antibodies against CD19 include Inebilizumab, Tapasitamab, and Roncastuximab tesirine, an ADC;
- Antibodies against CD20 include Ocrelizumab, Ublituximab, Obinutuzumab, Ofatumumab, Rituximab, Tositumomab and ADC Ibritumomab tiuxetan;
- Antibodies against CD22 include Epratuzumab and ADCs Inotuzumab ozogamicin, Moxetumomab pasudotox;
- ADCs for CD30 include Brentuximab vedotin
- ADCs for CD33 were Badastuximab Talirine, Gemtuzumab ozogamicin;
- Antibodies against CD38 include Daratumumab, Isatuximab;
- Antibodies against CD52 include Alemtuxumab;
- Antibodies against CD62 include Crizanlizumab;
- ADCs for CD79b include Polatuzumab vedotin
- Antibodies against CD80 are Galiximab;
- Antibodies against CGRP include Eptinezumab, Fremanezumab, Galcanezumab, and Erenumab;
- Antibodies against Claudin-18 include Zolbetuximab
- Antibodies against CTLA4 include Tremelimumab, Zalifrelimab, and Ipilimumab;
- ADCs for DLL3 include Rovalpituzumab tesirine
- Antibodies against the EGF receptor include Cetuximab, Depatuxizumab, Zalutumumab, Necitumumab, and Panitumumab;
- Antibodies to the Fc receptor include Nipocalimab, Rozanolixizumab;
- Antibodies against FGF23 include Burosumab;
- Antibodies to folate receptors include Paletuzumab and the ADC Mirvetuximab soravtansine;
- Antibodies against GD2 include Dinutuximab, Naxitamab;
- Antibodies against GM-CSF include Otilimab
- Antibodies against HER2 are Margetuximab, Pertuzumab, Trastuzumab and ADCs are Trastuzumab deruxtecan, Trastuzumab emtansine, Trastuzumab emtansine, and Trastuzumab.
- Sutuzumab duocarmazine Trastuzumab duocarmazine
- Antibodies against HER3 include Patritumab;
- Antibodies to the interferon receptor include Anifrolumab;
- Antibodies against interferon gamma include Emapalumab;
- Antibodies against IgE include Ligelizumab, Omalizumab;
- Antibodies against the IGF-1 receptor include Dalotuzumab, Figitumumab, Teprotumumab;
- Antibodies against interleukin 1 include Gebokizumab, Canakinumab;
- Antibodies to the interleukin 2 receptor include daclizumab, basiliximab;
- Antibodies to the interleukin 4 receptor include Dupilumab;
- Antibodies against interleukin 5 include Mepolizumab, Reslizumab;
- Antibodies to the interleukin 5 receptor include Benralizumab;
- Antibodies against interleukin 6 include Clazakizumab, Olokizumab, Sirukumab, and Siltuximab;
- Antibodies to the interleukin 6 receptor include sarilumab, satralizumab, tocilizumab, REGN88;
- Antibodies against interleukin 7 include Sekukinumab;
- Antibodies against interleukin 12/23 include Ustekinumab, Briakinumab;
- Antibodies against interleukin 13 include Lebrikizumab, Tralokinumab;
- Antibodies against interleukin 17A include Ixekizumab, Bimekizumab;
- Antibodies against interleukin 17 receptor A include Brodalumab;
- Antibodies to interleukin 23 include Brajicumab, Guselkumab, Risankizumab, Tildrakizumab, and Mirikizumab;
- Antibodies to the interleukin31 receptor include Nemolizumab;
- Antibodies to the interleukin 36 receptor include Spesolimab;
- Antibodies against LAG3 include Relatlimab
- Antibodies against NASP2 include Narsoplimab
- Antibodies against NGF include Fasinumab, Tanezumab;
- Antibodies against PVSK9 include Alirocumab, Evolocumab, Bococizumab;
- Antibodies against PD-1 are Lambrolizumab, Valstilimab, Camrelizumab, Semiplimab, Dostarlimab, Prolgolimab, and Shin Tilimab (Sintilimab), Spartalizumab, Tislelizumab, Pembrolizumab, Nivolumab;
- Antibodies against PD-L1 include Atezolizumab, Avelumab, Envafolimab, Durvalumab, and Bintrapusp Alpha, a dual antibody of TGF bete and PD-L1. Bintrafusp alpha);
- Antibodies against RANK-L include Denosumab
- Antibodies against SLAMF7 include Elotuzumab;
- Antibodies against tissue factors include Concizumab, Malstacimab;
- Antibodies against TNF, especially TNF ⁇ include Infliximab, Adalimumab, Golimumab, and the antibody fragment Sertolizumab pegol, and Ozo, a dual antibody against TNF and albumin.
- Ralizumab (Ozoralizumab);
- Antibodies to VEGF include Brolucizumab, Ranibizumab, Bevacizumab, and Faricimab, a dual antibody of VEGF and Ang2; And
- Antibodies to the VEGF receptor are Ramucirumab
- Cancers which are diseases that are applied to the composition, typically include cancers that are responsive to immunotherapy, and cancers not hitherto associated with immunotherapy.
- Non-limiting examples of cancers preferred for treatment are melanoma (e.g. metastatic malignant melanoma), kidney cancer (e.g. clear cell carcinoma), prostate cancer (e.g.
- the present invention includes refractory or recurrent cancers capable of inhibiting growth using the antibodies of the present invention.
- antibodies or antibody fragments according to the present invention can be used alone or in combination with vaccines to stimulate immune responses against pathogens, toxins, and auto-antigens.
- Antibodies or antigen-binding fragments thereof are, for example, human immunodeficiency virus, hepatitis virus classes A, B and C, Eppstein Barr virus, human cytomegalovirus, human papilloma Viruses, including, but not limited to, herpes virus, can be used to stimulate an immune response to viruses that infect humans.
- Antibodies or antigen-binding fragments thereof can be used to stimulate an immune response to infection of bacterial or fungal parasites, and other pathogens.
- the invention also relates to a composition comprising the antibody antibody or antigen-binding fragment thereof of the invention and useful bacteria.
- the useful bacteria are those used for bacteria or probiotics having anticancer efficacy, Anaerococcus, Anaerostipes, Alistipes, Akkermansia, Bacillus, Bacteroides, Bifidobacterium, Blautia, Capnocytophaga, Clostridium, Collinsella, Desulfoccus, Escherichia, Dorea, Enterococcus.
- Faecalibacterium Faecalibacterium, Fusobacterium, Garnderella, Gemmiger, Kelbsiella, Lactobacillus, Leuconostoc, Moryella, Paraprevotella, Parabacteroides, Pharscolarctobacterium, Porphyromonas, Prevotella, Pseudobutyrivibrio, Roseburoccusia, Rothiagella, Rucocuscus, etc. It does not become.
- compositions of the present invention are commonly used in formulation, and are lactose, dextrose, sucrose, sorbitol, mannitol, starch, gum acacia, calcium phosphate, alginate, gelatin, calcium silicate. , Microcrystalline cellulose, polyvinylpyrrolidone, water, syrup, methyl cellulose, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate and mineral oil, but are not limited thereto.
- composition of the present invention may further include a lubricant, a wetting agent, a sweetening agent, a flavoring agent, an emulsifying agent, a suspending agent, a preservative, and the like in addition to the above components.
- the pharmaceutical composition of the present invention can be administered orally or parenterally, and in the case of parenteral administration, intravenous injection, subcutaneous injection, intramuscular injection, intraperitoneal injection, endothelial administration, topical administration, intranasal administration, intrapulmonary administration, and rectal administration It can be administered by the like.
- the oral composition When administered orally, since the protein or peptide is digested, the oral composition should be coated with an active agent or formulated to protect it from degradation in the stomach.
- the pharmaceutical composition can be administered by any device capable of moving the active substance to the target cell.
- a suitable dosage of the composition according to the present invention varies depending on factors such as formulation method, mode of administration, age, weight, sex, pathological condition, food, administration time, route of administration, rate of excretion and response sensitivity of the patient, usually As a result, a skilled physician can easily determine and prescribe an effective dosage for the desired treatment or prevention.
- the daily dosage of the pharmaceutical composition of the present invention is 0.0001-100 mg/kg.
- pharmaceutically effective amount as used herein means an amount sufficient to prevent or treat cancer.
- the pharmaceutical composition of the present invention is prepared in unit dosage form by formulating using a pharmaceutically acceptable carrier and/or excipient according to a method that can be easily carried out by a person having ordinary knowledge in the art. Or it can be made by incorporating it into a multi-dose container.
- the formulation may be in the form of a solution, suspension or emulsion in an oil or aqueous medium, or in the form of an extract, powder, suppository, powder, granule, tablet or capsule, and may additionally include a dispersant or a stabilizer.
- composition of the present invention may be administered as an individual therapeutic agent or administered in combination with other therapeutic agents, and may be administered sequentially or simultaneously with a conventional therapeutic agent.
- the present invention provides an antibody-drug conjugate in which a drug is conjugated to an anti-PD-L1 antibody or antigen-binding fragment thereof according to the present invention, and a pharmaceutical composition comprising the same.
- the present invention provides a method for treating tumors using an antibody-drug conjugate in which a drug is conjugated to the anti-PD-L1 antibody or antigen-binding fragment thereof, and a pharmaceutical composition comprising the same.
- the anti-PD-L1 antibody or antigen-binding fragment thereof may be bound to the drug through a linker.
- the linker is a site that connects the anti-PD-L1 antibody or antigen-binding fragment thereof and the drug.
- the linker is a form that can be cleaved under intracellular conditions, that is, in the intracellular environment, the drug prevents the cleavage of the linker. So that it can be released through.
- the linker may be cleaved by a cleaving agent present in the intracellular environment, such as lysosomes or endosomes, for example, a peptide linker that may be cleaved by intracellular peptidases or protease enzymes such as lysosomes or endosome proteases.
- a cleaving agent present in the intracellular environment
- a peptide linker that may be cleaved by intracellular peptidases or protease enzymes such as lysosomes or endosome proteases.
- the peptide linker has a length of at least 2 or more amino acids.
- the cleavage agent may include cathepsin B, cathepsin D, and plasmin, and hydrolyzes the peptide to release the drug into target cells.
- the peptide linker can be cleaved by a thiol-dependent protease cathepsin-B, which is overexpressed in cancer tissue, for example, a Phe-Leu or Gly-Phe-Leu-Gly linker can be used.
- the peptide linker may be cleavable by, for example, intracellular protease, and may be a Val-Cit linker or a Phe-Lys linker.
- the cleavable linker is pH sensitive and may be sensitive to hydrolysis at a specific pH value.
- the pH sensitive linker can be hydrolyzed under acidic conditions.
- acid labile linkers that can be hydrolyzed in lysosomes such as hydrazone, semicarbazone, thiosemicarbazone, cis-aconitic amide, orthoester, acetal, It may be ketal or the like.
- the linker may be cleaved under reducing conditions, for example, a disulfide linker may correspond thereto.
- SATA N-succinimidyl-S-acetylthioacetate
- SPDP N-succinimidyl-3-(2-pyridyldithio)propionate
- SPDB N-succinimidyl-3-(2-pyridyldithio) butyrate
- SMPT N-succinimidyl-oxycarbonyl
- Various disulfide bonds can be formed using -alpha-methyl-alpha-(2-pyridyl-dithio)toluene).
- the drug and/or drug-linker may be randomly conjugated through the lysine of the antibody, or may be conjugated through the cysteine exposed when the disulfide bond chain is reduced.
- a linker-drug may be linked through a genetically engineered tag, for example, a cysteine present in a peptide or protein.
- the genetically engineered tag for example, a peptide or a protein, may include an amino acid motif that can be recognized by, for example, isoprenoid transferase.
- the peptide or protein has a deletion at the carboxy end of the peptide or protein, or has an addition through a covalent bond of a spacer unit to the carboxy (C) end of the peptide or protein.
- linker may be, for example, a non-cleavable linker, and the drug is released through only one step of antibody hydrolysis, for example, to produce an amino acid-linker-drug complex.
- This type of linker may be a thioether group or a maleimidocaproyl group, and may maintain stability in blood.
- the drug in the antibody-drug conjugate may be bound to an antibody with an agent exhibiting a pharmacological effect, and specifically, may be a chemotherapeutic agent, toxin, micro RNA (miRNA), siRNA, shRNA, or radioactive isotope.
- the chemotherapeutic agent can be, for example, a cytotoxic agent or an immunosuppressive agent.
- a microtubulin inhibitor, a mitosis inhibitor, a topoisomerase inhibitor, or a chemotherapeutic agent capable of functioning as a DNA intercalator may be included.
- immunomodulatory compounds, anticancer agents and antiviral agents, or combinations thereof may be included.
- Such drugs include, for example, maytansinoid, auristatin, aminopterin, actinomycin, bleomycin, thalisomycin, camptothecin, N8-acetyl spermidine, 1-(2 chloroethyl)-1, 2-dimethylsulfonyl hydrazide, esperamycin, etoposide, 6-mercaptopurine, dolastatin, tricotecene, calicheamicin, taxol, taxane, paclitaxel, docetaxel, Methotrexate, vincristine, vinblastine, doxorubicin, melphalan, mitomycin A, mitomycin C, chlorambucil, duokamycin, L-asparaginase, mercaptopurine, thioguanine (thioguanine), hydroxyurea, cytarabine, cyclophosphamide, ifosfamide, nitrosourea
- the present invention provides a bispecific antibody in which an anti-PD-L1 antibody or antigen-binding fragment thereof according to the present invention and an antibody that binds to another antigen are bound.
- Anti-PD-L1 antibody or antigen-binding fragment thereof according to the present invention and the antibody forming a double antibody can be used without limitation as long as it is an antibody capable of specifically binding to an antigen related to cancer or autoimmune disease.
- the antibody that binds to the antigen is
- Antibodies against 4-1BB include Utomilumab;
- Antibodies against integrin include Natalizumab, Etrolizumab, Vedolizumab, and Bimagrumab;
- Antibodies against amyloid beta include Bapineuzumab, Crenezumab, Solanezumab, Aducanumab, Gantenerumab;
- Antibodies against angiopoetin were AMG 780;
- Antibodies against angiopoetin analog 3 include Evinacumab;
- Antibodies against B-cell activating factor include: tabalumab, lanalumab, and berrymumab;
- Antibodies against B7-H3 include omburtamab
- Antibodies against CCR4 include Mogamulizumab
- Antibodies against CD3 include Otelixizumab, Teplizumab, Muromonap, and Tebentafusp, a dual antibody against GP100 and CD3, and a dual antibody against CD19 and CD3.
- Antibodies against CD4 include Ibalizumab, Zanolimumab;
- Antibodies against CD6 include itolizumab;
- Antibodies against CD11a include Efalizumab;
- Antibodies against CD19 include Inebilizumab, Tapasitamab, and Roncastuximab tesirine, an ADC;
- Antibodies against CD20 include Ocrelizumab, Ublituximab, Obinutuzumab, Ofatumumab, Rituximab, Tositumomab and ADC Ibritumomab tiuxetan;
- Antibodies against CD22 include Epratuzumab and ADCs Inotuzumab ozogamicin, Moxetumomab pasudotox;
- ADCs for CD30 include Brentuximab vedotin
- ADCs for CD33 were Badastuximab Talirine, Gemtuzumab ozogamicin;
- Antibodies against CD38 include Daratumumab, Isatuximab;
- Antibodies against CD52 include Alemtuxumab;
- Antibodies against CD62 include Crizanlizumab;
- ADCs for CD79b include Polatuzumab vedotin
- Antibodies against CD80 are Galiximab;
- Antibodies against CGRP include Eptinezumab, Fremanezumab, Galcanezumab, and Erenumab;
- Antibodies against Claudin-18 include Zolbetuximab
- Antibodies against CTLA4 include Tremelimumab, Zalifrelimab, and Ipilimumab;
- ADCs for DLL3 include Rovalpituzumab tesirine
- Antibodies against the EGF receptor include Cetuximab, Depatuxizumab, Zalutumumab, Necitumumab, and Panitumumab;
- Antibodies to the Fc receptor include Nipocalimab, Rozanolixizumab;
- Antibodies against FGF23 include Burosumab;
- Antibodies to folate receptors include Paletuzumab and the ADC Mirvetuximab soravtansine;
- Antibodies against GD2 include Dinutuximab, Naxitamab;
- Antibodies against GM-CSF include Otilimab
- Antibodies against HER2 are Margetuximab, Pertuzumab, Trastuzumab and ADCs are Trastuzumab deruxtecan, Trastuzumab emtansine, Trastuzumab emtansine, and Trastuzumab.
- Sutuzumab duocarmazine Trastuzumab duocarmazine
- Antibodies against HER3 include Patritumab;
- Antibodies to the interferon receptor include Anifrolumab;
- Antibodies against interferon gamma include Emapalumab;
- Antibodies against IgE include Ligelizumab, Omalizumab;
- Antibodies against the IGF-1 receptor include Dalotuzumab, Figitumumab, Teprotumumab;
- Antibodies against interleukin 1 include Gebokizumab, Canakinumab;
- Antibodies to the interleukin 2 receptor include daclizumab, basiliximab;
- Antibodies to the interleukin 4 receptor include Dupilumab;
- Antibodies against interleukin 5 include Mepolizumab, Reslizumab;
- Antibodies to the interleukin 5 receptor include Benralizumab;
- Antibodies against interleukin 6 include Clazakizumab, Olokizumab, Sirukumab, and Siltuximab;
- Antibodies to the interleukin 6 receptor include sarilumab, satralizumab, tocilizumab, REGN88;
- Antibodies against interleukin 7 include Sekukinumab;
- Antibodies against interleukin 12/23 include Ustekinumab, Briakinumab;
- Antibodies against interleukin 13 include Lebrikizumab, Tralokinumab;
- Antibodies against interleukin 17A include Ixekizumab, Bimekizumab;
- Antibodies against interleukin 17 receptor A include Brodalumab;
- Antibodies against interleukin 23 include Brajicumab, Guselkumab, Risankizumab, Tildrakizumab, and Mirikizumab;
- Antibodies to the interleukin31 receptor include Nemolizumab;
- Antibodies to the interleukin 36 receptor include Spesolimab;
- Antibodies against LAG3 include Relatlimab
- Antibodies against NASP2 include Narsoplimab
- Antibodies against NGF include Fasinumab, Tanezumab;
- Antibodies against PVSK9 include Alirocumab, Evolocumab, Bococizumab;
- Antibodies against PD-1 are Lambrolizumab, Valstilimab, Camrelizumab, Semiplimab, Dostarlimab, Prolgolimab, and Shin Tilimab (Sintilimab), Spartalizumab, Tislelizumab, Pembrolizumab, Nivolumab;
- Antibodies against PD-L1 include Atezolizumab, Avelumab, Envafolimab, and Durvalumab;
- Antibodies against RANK-L include Denosumab
- Antibodies against SLAMF7 include Elotuzumab;
- Antibodies against tissue factors include Concizumab, Malstacimab;
- Antibodies against TNF, especially TNF ⁇ include Infliximab, Adalimumab, Golimumab, and the antibody fragment Sertolizumab pegol, and Ozo, a dual antibody against TNF and albumin.
- Ralizumab (Ozoralizumab);
- Antibodies to VEGF include Brolucizumab, Ranibizumab, Bevacizumab, and Faricimab, a dual antibody of VEGF and Ang2; And
- Antibodies to the VEGF receptor are Ramucirumab
- a fragment containing an extracellular site (Met1 ⁇ Thr239) in the signal sequence at the N-terminus of the PD-L1 gene is PCR amplified to express human Fc fragment fusion.
- a'pCEP4-PDL1-Fc' vector was constructed by inserting it at the NheI and SfiI restriction enzyme sites of the pCEP4-Fc vector.
- the PD-L1 expression vector was introduced into FreeStyle 293-F cells according to the transformation method provided by the manufacturer, and the antigen was carried out through culture for about 6-10 days. Protein was allowed to be excreted.
- PD-L1 antigen protein discharged to the cell culture solution was purified by an open column purification method using Protein A resin (Amicogen), eluted with citric acid, and neutralized with 1 M Tris pH9.4 solution.
- the neutralized antigen protein was purified by dialysis 5 times with 1X PBS buffer and used in subsequent experiments.
- The'phage display' technique was used to screen for human antibodies that bind to PD-L1.
- Three kinds of human antibody libraries were used to screen human antibody candidates through phage display, which are 1)'PNAS, 1999 vol.96, the naive scFv library reported in pp.6953-6958', 2)'Molecules and Cells, a synthetic scFv library reported in 2009 vol.27, pp.225-235, 3)'LG naive scFv library' developed by LG Life Sciences.
- the first wash is 6 ml PBS once
- the second and third wash is 6 ml PBS twice
- the fourth wash is 7 ml PBS 3 times. Stringency was adjusted so that a large number of them could be selected.
- E. coli infected with phages is spread on a solid LB plate (including 1% glucose) containing the antibiotics and incubated overnight in a 30°C incubator so that all E. coli can grow on a lawn.
- the phage particles were re-amplified by harvesting with a scraper and using the method used in Example 2.
- periplasmic fractions containing antibody fragments were obtained from about 1700 bacterial strains expressing individual antibodies, and ELISA screening experiments and FACS screening experiments were performed.
- the cultured E. coli was centrifuged (4,000 rpm, 15 minutes, 4°C) to discard the supernatant, and all E. coli was added to 80 ⁇ l volume of ice-cold 1X TES buffer (20% w/ v Resuspend in sucrose, 50 mM Tris, 1 mM EDTA, pH 8.0) and leave for 30 minutes on ice. After that, add 120 ⁇ l of ice-cold 0.2X TES buffer, mix, and then stand for another 30 minutes to allow osmotic pressure. Was induced to extract periplasmic components. Thereafter, cells were removed through centrifugation, and the supernatant was used for ELISA and FACS verification experiments as a periplasmic component containing antibody fragments.
- TMB Tetramethylbenzidine
- a FACS experiment was performed to verify the binding of the selected antibody fragments to the natural structure of PD-L1 expressed on the cell surface.
- the PD-L1 antigen protein was expressed through transformation in 293T cells.
- Whether the antibody fragments were bound to the surface-expressed PD-L1 antigen was determined through a flow cytometer, and the experimental process was performed according to a general FACS test method.
- ELISA to verify the binding to PD-L1 antigen protein coated on a 96 well plate by obtaining periplasmic components from about 1800 colonies derived from the 3rd and 4th elution of the panning experiment for PD-L1 protein. It was confirmed that about 72 individual antibody clones were obtained as a result of performing the reaction and sequencing analysis of clones exhibiting a color reaction.
- Example 5 PD-1/PD-L1 binding inhibition assay based on BLI technology
- a functional antibody screening experiment was conducted based on the principle of “bio-layer interferometry (BLI)” using Pall's Octet device.
- BBI bio-layer interferometry
- EDC/sulfo-NHS activation reaction was performed, and unreacted functional groups were inactivated with 1 M ethanolamine coated with PD-1 protein at a concentration of 5 ⁇ g/ml in 10 mM sodium acetate at pH 5.
- the selected scFv antibody and PD-L1-Fc are sequentially reacted, and the selected antibody binds to PD-L1, thereby PD-L1 antigen in the solution. It was confirmed that the protein inhibited the binding of the PD-1 protein coated on the biosensor.
- the binding inhibitory performance of individual antibody candidates with different variable regions of the heavy and light chains was checked using an Octet device, and when the antibody fragments were incubated together, the increase in the pattern of the Sensorgram due to the decrease in PD-L1 binding decreased. It was confirmed that there were about 50 or more antibody candidates (out of 72 candidate antibodies in total).
- variable regions VH and VL regions of about 58 individual antibodies using a human antibody primer set to amplify the VH region and VL region of the individual antibody identified through nucleotide sequence analysis of individual antibody clones, Purified.
- VH fragments were treated with KpnI or BamHI, NheI restriction enzymes and purified, inserted into the corresponding restriction enzyme site of the pCEP4-VH vector for heavy chain expression, and VL fragments treated with KpnI or BamHI, BsiWI restriction enzymes and purified
- vectors capable of expressing individual antibodies in animal cells by inserting into the corresponding restriction enzyme site of the pCEP4-VL vector for light chain expression were obtained (58 types of heavy and light chain expression vectors, respectively).
- control antibody For use as a control antibody, the heavy and light chain variable region amino acids of MK3475, a PD-1 target antibody developed by Merck, and MPDL3280A, a PD-L1 target antibody developed by Genentech, were identified in each patent, and cDNA was identified. Synthesized and inserted into the pCEP4-VH vector and the pCEP4-VL vector to prepare an expression vector, the two antibodies were produced and purified through the same process as the candidate antibodies, and used as a control antibody.
- the MC38 cells are divided into 5x10 5 ⁇ 1x10 6 cells/100 ⁇ l in size and dispensed into a 96wells V-bottom plate, followed by a blocking process according to a general FACS experiment method, and then purified PD-L1 antibodies are added to 10 After reacting at a concentration of ⁇ g/ml for about 30 to 60 minutes at 4°C (or on ice), unbound antibodies were washed and removed using a FACS wash buffer through centrifugation (1,000 rpm for 1 min at 4°C). .
- the PD-1/PD-L1 binding inhibitory performance of the candidate antibodies is a relative value when the inhibitory performance of MK3475 antibody is considered as 100%, and the #50 clone has 91%, and the KL001 clone has 89% inhibition.
- KL001 clones showed cross-reactivity to the human-mouse PD-L1 antigen, and clone #50 showed a characteristic that binds only to human PD-L1, so they were named KL001 and KL002, respectively, as candidates for development.
- Murine colon cancer cell MC38 was cultured in a medium supplemented with 10% fetal bovine serum at 37°C and 5% CO 2 conditions, and cultured for about 1 week to check morphology, survival rate, doubling time and mycoplasma contamination to prevent contamination. Cancer cells in a normal state were prepared for use in animal experiments, and when injected into experimental animals, cells with a cell viability of 95% or more were used.
- MC38 cells are harvested using trypsin-EDTA, and prepared by turbidity in cold-PBS at a concentration of 1x10 7 cells/ml for transplantation, and the prepared cell suspension is taken with a 5x10 5 cells/50 ⁇ l syringe for transplantation.
- C57BL/6 mice were implanted subcutaneously in the right hind limb. Thereafter, the tumor formation and growth were observed periodically, and the tumor volume was calculated according to the formula below using the measured tumor length.
- mice were reclassified according to volume and grouped into a control group (PBS treatment group and comparative antibody treatment group) and four PD-L1 target antibody treatment groups.
- a control group PBS treatment group and comparative antibody treatment group
- PD-L1 target antibody treatment groups four PD-L1 target antibody treatment groups.
- About 200 ⁇ g/200 ⁇ l of antibody was administered to the antibody sample by intraperitoneal injection, and the injection cycle was administered 3 times (1 day, 4 days, 7 days) every 3 days.
- the growth of cancer tissue was measured every 3 days before the start of treatment with the antibody sample, and once every 2 days after the start of treatment, and the tumor growth curve as the tumor volume from the start of treatment with the antibody sample to the end of the test (about 2 weeks). was prepared to be used as data for evaluating the efficacy of the antibody. If the tumor volume reached the limit of the Animal Experimental Ethics Committee (IACUC), the mice were euthanized. At the end of the experiment, the mice were euthanized and the tumor was excised, and the tumor weight and tumor shape were photographed.
- IACUC Animal Experimental Ethics Committee
- KL001 (PL110) antibody candidate having human-mouse cross-reactivity has excellent anticancer efficacy
- peripheral blood mononuclear cells PBMCs
- SEA SEB-stimulated PBMCs
- red blood cell concentrate (cRBC) is purchased from Gangwon Blood Center, diluted 1:1 with PBS, placed on Ficoll-Paque, and centrifuged. (RBC), peripheral blood mononuclear cells (PBMC), and plasma were separated, and the PBMC portion was extracted and used in the experiment.
- PBMC peripheral blood mononuclear cells
- a focused mutagenesis library was constructed by introducing mutagenesis by focusing on the heavy chain CDR 2 and 3 regions and the light chain CDR 1 and 3 regions in the basic framework of the KL001 antibody.
- the KL001 fragment was treated with a restriction enzyme for cloning into a phage display vector,'pComb3XSS'. After that, the ligation reaction was performed on the vector treated with the same restriction enzyme.
- Phages displaying KL001 mutant antibodies were prepared using VCSM13 helper phage, and then purified using a precipitation method using PEG and NaCl.
- the periplasmic fraction was obtained using sucrose, and then antibody candidates expected to increase binding strength were selected through ELISA method using a plate coated with PD-L1 antigen. .
- the panning process was performed 3 to 4 times, applying stringent experimental conditions that reduce the amount of antigen. At this time, it was confirmed from the input vs output measurement result of panning that the strong binders were effectively increased through panning.
- periplasmic fractions were obtained from about 1600 individual colonies (set1 to set16) obtained as a result of the third and fourth panning, and an ELISA reaction for selecting antibodies with improved affinity was performed to select candidate clones showing positive signals. It was first selected (130 clones).
- the BLI-based Octet device mentioned in Example 5 was used.
- the biosensor coated with PD-1 protein is immersed in a well mixed with PD-L1 antigen protein and PD-L1 binding antibody (or comparative antibody), and the mass change of the biosensor surface due to the binding of PD-L1 antigen protein in the solution Measured.
- the Anti-Human IgG (Fc) antibody was first fixed on the surface of the CM5 chip using the Human Antibody Capture Kit, and the candidate Antibodies KL001-8 and KL001-13 were diluted in PBS-P running buffer and injected for 30 seconds at a flow rate of 10 ⁇ l/min, captured at a level of 300 ⁇ 330 RU, and then the human PD-L1 antigen protein (sinobiological) was added.
- association/dissociation reactions were observed at a flow rate of 30 ⁇ l/min by diluting each 2 times from 5 nM (reaction time was set to 4 min/7 min, respectively).
- the binding strength was measured by diluting twice from 10 nM and setting the association/dissociation time to 4 minutes/3 minutes each at a flow rate of 30 ⁇ l/min.
- regeneration solution (3 M MgCl 2 ) was injected for 30 seconds at a flow rate of 30 ⁇ l/min, and the experimental data was a 1:1 binding model of BIAevaluation software version 1.0. And calculated.
- the anti-PD-L1 antibody binding affinity assay using the antigen capture method use the His Capture Kit to fix the Anti-His antibody on the surface of the CM5 chip according to the manufacturer's instruction, and capture the PD-L1 antigen protein. After that, the candidate antibody was diluted 2 times from 2.5 nM, and the association/dissociation time at a flow rate of 30 ⁇ l/min was 4 min/7 min, respectively, to measure the binding strength.
- Anti-Human IgG (Fc) antibodies were immobilized on Flow cells 3 and 4. By performing immobilization according to the instruction of the Human Antibody Capture Kit, it was confirmed that each flow cell was immobilized within the range of approximately 11,000 ⁇ 13,000 RU, and antibodies KL001-8 and KL001-13 were captured using a running buffer (PBS-P).
- PBS-P running buffer
- Example 13 Single treatment anticancer efficacy test using an in vivo syngeneic mouse model
- Anticancer efficacy of the antibody candidate was confirmed using an in vivo syngeneic mouse model.
- the MPDL3280A group showed 94.3%, the KL001 (PL110) group 97.5%, and the binding affinity antibody KL001-13 group 98.9% compared to the control group administered with PBS. And, no change in body weight was observed by the drug.
- Recombinant IL-2 and CTLA-4 antibodies (9D9 clones), which are representative immunostimulating proteins, to verify whether synergistic effects are observed in the anticancer performance evaluation animal model when co-treatment with PD-L1 immune anticancer antibody candidates and other anticancer drugs , BioXcell) and a PD-L1 target candidate antibody (KL001-13) were conducted to verify the efficacy of the combination treatment.
- the mouse colon cancer MC38 cell line was cultured to maintain 70-90% cell density, then harvested with 0.25% Trypsin-EDTA, and resuspension in DMEM media (serum free) at a cell concentration of 1x10 6 cells/100 ⁇ l.
- DMEM media serum free
- subcutaneous injection of 1x10 6 cells/100 ⁇ l prepared on the left side of the trunk of a C57BL/6 mouse anesthetized with 2.5% Avertin was performed in the experimental animal mouse for about 7 ⁇ It was allowed to grow for 10 days and maintained until the tumor size of the injected MC38 cell line reached a size of 100 mm 3 . At this time, the size of the tumor was calculated as follows.
- the antibody or antigen-binding fragment thereof that binds to PD-L1 according to the present invention exhibits cross-reactivity to human-mouse, human-monkey and human-dog, and while binding to PD-L1 with very high affinity, PD-1/ It was confirmed that it inhibits the formation of the PD-L1 complex. In addition, it was confirmed that it exhibits excellent effects in in vitro cell-based assays, in vivo efficacy experiments, and combination experiments. Through this, the antibody or antigen-binding fragment thereof that binds to PD-L1 according to the present invention can be used to prevent cancer or It can be usefully used for treatment, and can produce synergistic effects when combined with other anticancer drugs.
- Electromagnetic burst attached.
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Abstract
Description
Claims (14)
- 서열번호 1의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 중쇄 CDR1,서열번호 2의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 중쇄 CDR2,서열번호 3 또는 서열번호 11의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 중쇄 CDR3,서열번호 5 또는 서열번호 13의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 경쇄 CDR1,서열번호 6의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 경쇄 CDR2,서열번호 7의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 경쇄 CDR3를 포함하는, PD-L1에 결합하는 항체 또는 이의 항원 결합단편.
- 제1항에 있어서,서열번호 1의 중쇄 CDR1, 서열번호 2의 중쇄 CDR2, 및 서열번호 3의 중쇄 CDR3을 포함하는 중쇄 가변영역, 또는서열번호 1의 중쇄 CDR1, 서열번호 2의 중쇄 CDR2, 및 서열번호 11의 중쇄 CDR3을 포함하는 중쇄 가변영역을 포함하는 항체 또는 이의 항원 결합단편.
- 제1항에 있어서,서열번호 5의 경쇄 CDR1, 서열번호 6의 경쇄 CDR2, 및 서열번호 7의 경쇄 CDR3를 포함하는 경쇄 가변영역, 또는서열번호 13의 경쇄 CDR1, 서열번호 6의 경쇄 CDR2, 및 서열번호 7의 경쇄 CDR3를 포함하는 경쇄 가변영역을 포함하는 항체 또는 이의 항원 결합단편.
- 제1항에 있어서, 서열번호 4 또는 서열번호 12의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 중쇄 가변영역을 포함하는 항체 또는 이의 항원 결합단편.
- 제1항에 있어서, 서열번호 8 또는 서열번호 14의 서열과 90% 이상의 서열 상동성을 가지는 서열을 포함하는 경쇄 가변영역을 포함하는 항체 또는 이의 항원 결합단편.
- 제1항에 있어서, 마우스 또는 인간 이외의 포유류에 교차결합하는 항체 또는 이의 항원 결합단편.
- 제 1 항 내지 제 6 항 중 어느 한 항의 항체 또는 이의 항원 결합단편을 코딩하는 핵산.
- 제7항의 핵산을 포함하는 발현벡터.
- 제8항의 발현 벡터로 형질전환된 세포.
- 다음 단계를 포함하는 PD-L1에 결합하는 항체 또는 그의 항원 결합 단편의 제조방법:(a) 제9항의 세포를 배양하는 단계; 및(b) 상기 배양된 세포에서 항체 또는 그의 항원 결합 단편을 회수하는 단계.
- 제 1 항 내지 제 6 항 중 어느 한 항의 항체 또는 그의 항원 결합 단편을 유효성분으로 포함하는 암의 예방 또는 치료용 조성물.
- 제 1 항 내지 제 6 항 중 어느 한 항의 항체 또는 그의 항원 결합 단편을 다른 항암제와 투여하여 암을 예방 또는 치료하기 위한 병용 투여용 조성물.
- 제 1 항 내지 제 6 항 중 어느 한 항의 항체 또는 그의 항원 결합 단편에 약물이 접합된 항체-약물 접합체(antibody-drug conjugate).
- 제 1 항 내지 제 6 항 중 어느 한 항의 항체 또는 그의 항원 결합 단편과 다른 항원에 결합하는 항체가 결합된 이중항체(bispecific antibody).
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| CN202080028102.8A CN113677709B (zh) | 2019-04-11 | 2020-04-09 | 针对程序性细胞死亡蛋白配体-1(pd-l1)的抗体及其用途 |
| JP2021560053A JP7302010B2 (ja) | 2019-04-11 | 2020-04-09 | プログラム細胞死タンパク質リガンド-1(pd-l1)に対する抗体及びその用途 |
| US17/441,914 US12331120B2 (en) | 2019-04-11 | 2020-04-09 | Antibodies against programmed death-ligand 1 and uses thereof |
| BR112021020163A BR112021020163A2 (pt) | 2019-04-11 | 2020-04-09 | Anticorpos contra ligante 1 de morte programada e usos dos mesmos |
| EP20787913.1A EP3954706A4 (en) | 2019-04-11 | 2020-04-09 | Antibody to programmed cell death protein ligand-1 (pd-l1), and use thereof |
| AU2020271467A AU2020271467B2 (en) | 2019-04-11 | 2020-04-09 | Antibodies against programmed death-ligand 1 and uses thereof |
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| EP4638504A1 (en) * | 2022-12-19 | 2025-10-29 | Biocytogen Pharmaceuticals (Beijing) Co., Ltd. | Anti-pdl1 antibodies and uses thereof |
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| CN106604742B (zh) | 2014-07-03 | 2019-01-11 | 百济神州有限公司 | 抗pd-l1抗体及其作为治疗剂及诊断剂的用途 |
| TWI595006B (zh) | 2014-12-09 | 2017-08-11 | 禮納特神經系統科學公司 | 抗pd-1抗體類和使用彼等之方法 |
| WO2016111646A1 (en) | 2015-01-05 | 2016-07-14 | National University Of Singapore | In vivo corneal modeling |
| CN106939047B (zh) | 2016-01-04 | 2021-08-31 | 江苏怀瑜药业有限公司 | 一种pd-l1抗体及其制备方法 |
| CN108456251A (zh) * | 2017-02-21 | 2018-08-28 | 上海君实生物医药科技股份有限公司 | 抗pd-l1抗体及其应用 |
| KR102311838B1 (ko) | 2017-12-27 | 2021-10-14 | 주식회사 파멥신 | 항-pd-l1 항체 및 이의 용도 |
| WO2020209645A1 (ko) | 2019-04-11 | 2020-10-15 | (재) 스크립스코리아항체연구원 | 프로그램화된 세포 사멸 단백질 리간드-1 (pd-l1)에 대한 항체 및 이의 용도 |
-
2020
- 2020-04-09 WO PCT/KR2020/004854 patent/WO2020209645A1/ko not_active Ceased
- 2020-04-09 CN CN202080028102.8A patent/CN113677709B/zh active Active
- 2020-04-09 JP JP2021560053A patent/JP7302010B2/ja active Active
- 2020-04-09 US US17/441,914 patent/US12331120B2/en active Active
- 2020-04-09 EP EP20787913.1A patent/EP3954706A4/en active Pending
- 2020-04-09 AU AU2020271467A patent/AU2020271467B2/en active Active
- 2020-04-09 KR KR1020200043337A patent/KR102357951B1/ko active Active
- 2020-04-09 BR BR112021020163A patent/BR112021020163A2/pt unknown
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| US8715743B2 (en) * | 2007-08-03 | 2014-05-06 | Musc Foundation For Research Development | Human monoclonal antibodies and methods for producing the same |
| WO2016061142A1 (en) * | 2014-10-14 | 2016-04-21 | Novartis Ag | Antibody molecules to pd-l1 and uses thereof |
| KR20170102167A (ko) * | 2015-01-09 | 2017-09-07 | 에이전시 포 사이언스, 테크놀로지 앤드 리서치 | 항-pd-l1 항체 |
| KR20180016321A (ko) * | 2016-08-05 | 2018-02-14 | 주식회사 와이바이오로직스 | 프로그램화된 세포 사멸 단백질 리간드-1 (pd-l1)에 대한 항체 및 이의 용도 |
| WO2018195226A1 (en) * | 2017-04-18 | 2018-10-25 | R-Pharm Overseas, Inc. | Anti-pd-l1 antibody and use thereof |
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| PNAS, vol. 96, 1999, pages 6953 - 6958 |
| See also references of EP3954706A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| US12331120B2 (en) | 2025-06-17 |
| JP7302010B2 (ja) | 2023-07-03 |
| JP2022528447A (ja) | 2022-06-10 |
| US20220195049A1 (en) | 2022-06-23 |
| EP3954706A1 (en) | 2022-02-16 |
| KR20200120541A (ko) | 2020-10-21 |
| AU2020271467A1 (en) | 2021-11-18 |
| CN113677709A (zh) | 2021-11-19 |
| AU2020271467B2 (en) | 2024-06-27 |
| EP3954706A4 (en) | 2023-11-08 |
| CN113677709B (zh) | 2024-08-23 |
| KR102357951B1 (ko) | 2022-02-07 |
| BR112021020163A2 (pt) | 2021-12-21 |
| CA3132844A1 (en) | 2020-10-15 |
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