WO2004087762A1 - ペプチドトランスポーターの輸送活性を阻害する抗体 - Google Patents
ペプチドトランスポーターの輸送活性を阻害する抗体 Download PDFInfo
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- WO2004087762A1 WO2004087762A1 PCT/JP2004/004331 JP2004004331W WO2004087762A1 WO 2004087762 A1 WO2004087762 A1 WO 2004087762A1 JP 2004004331 W JP2004004331 W JP 2004004331W WO 2004087762 A1 WO2004087762 A1 WO 2004087762A1
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- Prior art keywords
- antibody
- peptl
- peptide transporter
- cells
- peptide
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- 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
- C07K16/30—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/76—Antagonist effect on antigen, e.g. neutralization or inhibition of binding
Definitions
- the present invention relates to an antibody that inhibits the transport activity of a peptide transporter, and a cell growth inhibitor containing the antibody as an active ingredient.
- Non-patent Document 1 Non-patent Document 2, Non-patent Document 2. 3, Patent Document 1, Patent Document 2, Patent Document 3, etc.
- Peptide transporters are classified into proteins that transport peptides into cells and proteins that transport peptides out of cells. It can also be classified according to the difference in the energy source used during transport. Proton-driven peptide transporters that transport using the difference in the concentration of protons inside and outside the cell belong to the PTR family (non- Patent Document 3). On the other hand, peptide transporters that carry out transport using ATP in vivo belong to ABC family (Non-Patent Document 4).
- Non-patent document 5 Non-patent document 6, Non-patent document 7, Non-patent document 8, Non-patent document 9, Non-patent document 10
- drugs such as / 3-latatam antibiotics and ACE inhibitors
- PepTl and PepT2 are proton-driven peptide transcripts that contribute to the absorption of proteins and the maintenance of a peptide nitrogen source by taking up small molecule peptides into cells.
- a Supota, p ep Tl, PepT2 each 708 amino acids, a 12-transmembrane protein consisting of 729 (Non-patent Document 1, Non-Patent Documents 2 and 1 1).
- Non-Patent Document 1 2 Non-Patent Document 1 3
- Non-Patent Document 1 4 Non-Patent Document 1 4
- PepTl is mainly expressed in the small intestine, and its expression in the kidney and kidney has been confirmed. Expression of PepT2 has been confirmed in kidney, brain, lung, and spleen. It has been reported that Pe P Tl and Pep T2 are localized in the brush border membrane of the small intestine and renal tubular epithelial cells (Non-Patent Document 15, Non-Patent Document 16, Non-Patent Document 17, Non-Patent Document 17). Patent Document 11 1).
- Non-patent Document 18 PepTl was overexpressed in the cell membrane of human ductal carcinoma cell lines (Non-Patent Document 18), and that PepT2 mRNA was expressed in human knee duct carcinoma cell lines (Non-patent Document 1).
- Patent Document 1 JP-A-6-261761
- Patent Document 3 US5849525
- Non-Patent Document 1 J. Biol. Chem., 270 (12); 6456-6463, (1995)
- Non-Patent Document 3 Mol. Microbiol., Vol. 16, p825, (1995)
- Non-Patent Document 4 Annu. Rev. Cell. Biol., Vol 8, p67, (1992)
- Non-patent document 5 Ganapathy, Leibach., Curr.Biol. 3, 695-701, (1991)
- Non-patent document 6 Nakashima et ah, Biochem. Pharm. 33, 3345-3352, (1984)
- Non-patent document Reference 7 Friedman, Ami don., Pharm. Res., 6, 1043-1047, (1989)
- Non-patent Reference 8 Okano et al., J. Biol. Chem, 261, 14130-14134, (1986)
- Non-Patent Document 9 Muranushi et al., Pharm. Res., 6, 308-312, (1989)
- Non-Patent Document 10 Friedman, Ami don., J. Control. Rel., 13, 141-146, (199 0)
- Non-Patent Document 1 Terada, Inui, Tanpakusitsu Kakusan Kouso., Vol. 46, No5, (2001)
- Non-patent Document 1 2 Saito, H. et al., J. Pharmacol. Exp. Ther., 275, 1631-1637, (1995)
- Non-Patent Document 13 Saito, H. et al., Biochim.Biopys. Acta, 1280, 173-177, (1996)
- Non-Patent Document 15 Ogihara, H. et al., Biochem. Biophys. Res.Commun. 220, 848-852, (1996)
- Non-Patent Document 16 Takahashi, K. et al., J. Pharmacol. Exp. Ther., 286, 1037-1042 (1998)
- Non-Patent Document 17 Hong, S. et al., Am. J. Physiol. Renal. Physiol., 276, F658-F665 (1999)
- Non-Patent Document 18 Cancer Res., 58, 519-525, (1998)
- Non-Patent Document 19 Millennium World Congress of Pharmaceutical Sciences, (2000) Disclosure of Invention
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide an antibody that inhibits the transport activity of a peptide transporter, and a cell growth inhibitor containing the antibody as an active ingredient, particularly a knee.
- An object of the present invention is to provide an agent for suppressing the growth of cancer cells such as visceral cancer.
- the present inventors have found that a substance that inhibits the transport activity of a peptide transporter suppresses cell proliferation. Furthermore, an antibody that inhibits the transport activity of the peptide transporter was found. These findings are based on peptide transport using antibodies. It indicates that the activity of the protein can be inhibited and cell proliferation can be suppressed. In the development of growth inhibitors such as cancer cells, suppression of peptide transporter activity is considered to be an important indicator.
- the present invention more particularly,
- a cell growth inhibitor comprising the antibody according to any one of (1) to (4) as an active ingredient
- an anticancer agent comprising the antibody according to any one of (1) to (4) as an active ingredient
- the anticancer agent according to (6) which is a knee cancer.
- a method for inhibiting the transport activity of a peptide transporter comprising contacting an antibody that binds to the peptide transporter with a cell that expresses the peptide transporter.
- peptide transporter is PepTl or Pe P T2, the method described in (11)
- the present invention provides an antibody capable of inhibiting the transport activity of a peptide transporter.
- the peptide transporter of the present invention is not particularly limited. Peptide transporters that take up peptides into cells by mouth-to-mouth drive, more preferably PepTl or PepT2, and particularly preferably PepTl.
- PepTl and PepT2 are already known (human PepT1: GenBank XM—007063, J. Biol. Chem., 270 (12); 6456-6463, (1995), human PepT2: GenBank XM-002922, Biochim. Biophys. Acta., 1235; 461-466, (1995)).
- the antibody capable of inhibiting the transport activity of the peptide transporter of the present invention can inhibit transport via the peptide transporter (for example, uptake of the peptide into cells by the peptide transporter).
- the peptide transporter for example, uptake of the peptide into cells by the peptide transporter.
- Inhibiting the transport via the peptide transporter means that it is not necessary to completely block the transport of the peptide, but only if the amount of the peptide to be transported can be reduced.
- the antibody of the present invention is not particularly limited, as long as it can bind to the peptide transporter and inhibit the transport activity of the peptide transporter.
- Mouse antibody, rat antibody, rabbit antibody, sheep antibody, camel antibody, chimeric antibody, human Antibody, human antibody, etc. can be used as appropriate.
- the antibody may be a polyclonal antibody or a monoclonal antibody, but a monoclonal antibody is preferred because a homogeneous antibody can be stably produced.
- Polyclonal and monoclonal antibodies can be produced by methods well known to those skilled in the art.
- a hybridoma producing a monoclonal antibody can be basically produced as follows using a known technique. That is, a desired antigen or a cell expressing the desired antigen is used as a sensitizing antigen, which is immunized according to a usual immunization method, and the obtained immune cells are immunized by a known cell fusion method using a known cell fusion method. It can be produced by fusing with cells and screening monoclonal antibody-producing cells (hybridomas) by ordinary screening methods.
- mammals such as mice, rats, rabbits, sheep, monkeys, and the like can be used.
- the antigen is prepared by a known method, for example, a method using a baculovirus (for example, W098 / 46777). Etc.).
- a peptide transporter expressed on a baculovirus membrane is used as an immunogen
- a gp64 transgenic mouse can be used as an immunized animal (International Patent Application Publication No. WO 03/104453).
- Hybridomas can be prepared, for example, according to the method of Milstein et al. (Kohler. G. and Milstein, C., Methods Enzymol. (1981) 73: 3-46).
- immunization may be performed by binding to a giant molecule having immunogenicity such as albumin.
- a recombinant antibody produced by cloning an antibody gene from a hybridoma, inserting the gene into an appropriate vector, introducing this into a host, and producing the same using a gene recombination technique can be used (for example, Carl, AK Borrebaeck, James, W. Larrick, THERAPEUTIC MONOCLONAL ANTIBODIES, Published in the United Kingdom by MCMILLAN PUBLISHERS LTD, 1990).
- cDNA for the variable region (V region) of the antibody is synthesized from the mRNA of the hybridoma using reverse transcriptase.
- DNA encoding the V region of the target antibody is obtained, it is ligated to the DNA encoding the desired antibody constant region (C region) and inserted into an expression vector.
- DNA encoding the V region of the antibody may be incorporated into an expression vector containing the DNA of the C region of the antibody. It is incorporated into an expression vector so that it is expressed under the control of an expression control region, for example, an enhancer or promoter.
- host cells can be transformed with this expression vector to express the antibody.
- a recombinant antibody artificially modified for the purpose of, for example, reducing the antigenicity to humans such as a chimeric antibody or a humanized antibody
- modified antibodies can be produced using known methods.
- a chimeric antibody is an antibody comprising a heavy chain and light chain variable region of a non-human mammal, such as a mouse antibody, and a heavy chain and light chain constant region of a human antibody, and DNA encoding the mouse antibody variable region. With the DNA encoding the constant region of the human antibody It can be obtained by ligation, integration into an expression vector, introduction into a host, and production.
- the humanized antibody is also called a reshaped human antibody, and the complementarity determining region (CDR) of a non-human mammal, such as a mouse antibody, is transplanted into the complementarity determining region of a human antibody.
- CDR complementarity determining region
- the general gene recombination method is also known. Specifically, a DNA sequence designed to link the CDR of a mouse antibody and the framework region (FR) of a human antibody was constructed by several oligos made to have overlapping portions at the ends. It is synthesized from nucleotides by PCR. The obtained DNA is ligated to DNA encoding the constant region of a human antibody, and then inserted into an expression vector, which is then introduced into a host and produced. (European Patent Application Publication No.
- EP 239400 International Patent Application Publication Number W0 96/02576
- Human antibody FRs linked via CDRs are selected so that the complementarity-determining regions form a favorable antigen-binding site. If necessary, amino acids in the framework region of the variable region of the antibody may be substituted so that the complementarity determining region of the reshaped human antibody forms an appropriate antigen-binding site (Sato, K. et al., Cancer Res. (1993) 53, 851-856).
- CDRs can be determined based on known techniques. For example, a database of amino acid sequences of antibodies prepared by Kabat et al. ((“Sequence of Proteins of Immunological Interest ⁇ US Dept. Health and It can be determined by examining homology using Human Services, 198 3).
- a method for obtaining a human antibody is known.
- a human lymphocyte is sensitized in vitro with a desired antigen or a cell expressing the desired antigen, and the sensitized lymphocyte is fused with a human myeloma cell such as U266 to obtain a desired human antibody having an antigen-binding activity.
- a desired human antibody can be obtained by immunizing a transgenic animal having the entire repertoire of human antibody genes with a desired antigen (International Patent Application Publication No.
- a phage that binds to an antigen can be selected by expressing the variable region of a human antibody as a single-chain antibody (scFv) on the surface of a phage by the phage display method.
- scFv single-chain antibody
- a human antibody can be obtained by preparing an appropriate expression vector into which the sequence is inserted. These methods are well known and can be referred to W0 92/01047, W0 92/20791, W0 93/06213, W0 93/11236, W0 93/19172, W0 95/0 1438, W0 95/15388 .
- an antibody gene When an antibody gene is isolated and introduced into an appropriate host to produce an antibody, a combination of an appropriate host and an expression vector can be used.
- animal cells When eukaryotic cells are used as hosts, animal cells, plant cells, and fungal cells can be used.
- Animal cells include (1) mammalian cells, such as CH0, COS, myeloma, BHK (baby hamster kidney), HeLa, Vero, (2) amphibian cells, such as African omega oocytes, or (3) insects Cells, for example, sf9, sf21, Tn5 and the like are known.
- plant cells cells derived from the genus Nicotiana (for example, Nicotiana, for example, Nicotiana tabacurn) are known, and they may be callus-cultured.
- s genus, for example Saccharomyces' Celebiche Serevisiae and filamentous fungi, for example, Aspergillus (genus Aspergillus, for example, Aspergillus niger) are known.
- Aspergillus genus Aspergillus, for example, Aspergillus niger
- prokaryotic cells there is a production system using bacterial cells.
- bacteria Escherichia coli and Bacillus subtilis are known.
- An antibody can be obtained by introducing a desired antibody gene into these cells by transformation, and culturing the transformed cells in vitro.
- antibody fragments include Fab, F (ab ') 2, Fv, or single-chain Fv (scFv), Diabody in which Fv of H chain or L chain is linked by an appropriate linker.
- the antibody is treated with an enzyme, for example, papain, pepsin, etc., introduced into an expression vector, and then expressed in an appropriate host cell (eg, Co, MS et al., J. Immunol. (1994) 152, 2968-2976, Better, M.
- scFv can be obtained by linking the H chain V region and L chain V region of the antibody.
- the H chain V region and the L chain V region are linked via a linker, preferably a peptide linker (Huston, JS et al., Pro Natl. Acad. Sci. USA (1988) 85 , 5879-5883).
- the H chain V region and the L chain V region in the scFv may be derived from any of the antibodies described herein.
- As the peptide linker connecting the V regions for example, any single-chain peptide consisting of 12 to 19 residues is used.
- the scFv-encoding DNA is a DNA encoding the H chain or H chain V region of the antibody and a DNA encoding the L chain or L chain V region, all or a desired amino acid sequence thereof.
- Diabody is a flag that combines variable regions with variable regions (For example, scFv etc.) (hereinafter referred to as a fragment constituting Diabody), which is linked and dimerized, and usually contains two VLs and two VHs (P. Holliger et al. Natl.Acad.Sci. USA, 90, 6444-6448 (1993), EP404097, W093 / 11161, Johnson et al., Method in Enzymology, 203, 88-98, (1991), Holliger et.
- an antibody conjugated with various molecules such as polyethylene glycol (PEG) can also be used. It is also possible to bind a radioactive isotope, a chemotherapeutic agent, or a cytotoxic substance such as a bacterial toxin to the antibody.
- PEG polyethylene glycol
- Such a modified antibody can be obtained by chemically modifying the obtained antibody. Methods for modifying antibodies have already been established in this field.
- the antibody used in the present invention may be a bispecific antibody.
- the bispecific antibody may be a bispecific antibody having an antigen-binding site that recognizes a different epitope on the peptide transporter molecule, or one antigen-binding site may recognize a peptide transporter and the other antigen
- the binding site may recognize a cytotoxic substance such as a radioactive substance, a chemotherapeutic agent, or a cell-derived toxin.
- Bispecific antibodies can be produced by combining the HL pairs of two types of antibodies, or by fusing hybridomas producing different monoclonal antibodies to produce bispecific antibody-producing fused cells. , You can also get.
- bispecific antibodies can be produced by genetic engineering techniques.
- an antibody having a modified sugar chain can be used.
- Techniques for modifying the sugar chains of antibodies are already known (for example, WO 00/61739, WO 02/31140, etc.).
- the “antibody” in the present invention also includes these antibodies.
- Antibodies expressed and produced as described above are used in normal protein purification. It can be purified by any known method. For example, the ability to separate and purify antibodies by appropriately selecting and combining affinity columns such as protein A columns, chromatography columns, filters, ultrafiltration, salting out, and dialysis! O (Antibodies A Laboratory Manual. Ed Harlow, David Lane, Cold Spring Harbor Laboratory, 1988).
- ELISA enzyme-linked immunosorbent assay
- EIA enzyme immunoassay
- RIA radioimmunoassay
- fluorescence immunoassay can be used. Whether or not a specific molecule binds to the peptide transporter can be measured by a known method.
- Known methods include, for example, immunoprecipitation, West Western plotting, ELISA (enzyme-linked immunosorbent assay), EIA (enzyme immunoassay), RIA (radioimmunoassay), fluorescent immunoassay, surface And a method using a biosensor utilizing the plasmon resonance phenomenon.
- Detection of whether the antibody inhibits the transport function of the peptide transporter can be performed by a known method, for example, by labeling a substrate such as a peptide with a radioactive substance (such as 14 C) or a fluorescent substance, and then using the peptide transporter. It can be determined by measuring the amount taken up by the porter-expressing cells (International Patent Application Publication No. W0 03/083116, Development of continuation drugs 4) Biomembrane transport and tissue targeting of one drug 1, 11 ( Editing, Hiroshi Terada, Akira Tsuji)).
- Cells targeted by the cell growth inhibitor of the present invention are not particularly limited, but are preferably cancer cells such as kidney cancer, liver cancer, lung cancer, esophagus cancer, breast cancer, and colon cancer, and are particularly preferred. Are spleen cancer cells.
- the cell growth inhibitor of the present invention is used for the treatment and prevention of diseases caused by cell proliferation, particularly cancer such as spleen cancer.
- the antibody of the present invention can be used as a peptide transporter transport inhibitor. You can use it.
- the cytostatic agent can be administered orally or parenterally, and is preferably parenterally administered. Specifically, injection, nasal administration, pulmonary administration, transdermal administration And the like. Examples of injection forms include systemic or local administration by intravenous injection, intramuscular injection, intraperitoneal injection, subcutaneous injection and the like.
- the administration method can be appropriately selected according to the age and symptoms of the patient.
- the dose can be selected, for example, from O. OOOlmg to 100 Omg per kg of body weight at a time. Alternatively, for example, the dose can be selected within a range of 0.001 to: 1000 mg / body per patient.
- the therapeutics of the present invention are not limited to these dosages.
- the therapeutic agent of the present invention can be formulated according to a conventional method (for example, Remington's Pharmaceutical Science, la test edition, Mark Publishing Company, Easton, USA), using a pharmaceutically acceptable carrier or additive. It may include things with it. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a graph showing the results of detecting the inhibition of PepTl activity of an anti-human PepTl monoclonal antibody in a PepTl-expressing virus.
- FIG. 2 is a graph showing the ability of AT-264 to inhibit PepTl in BaF3 cells.
- FIG. 6 is a diagram showing the nucleotide sequence of the constructed gp64 gene.
- FIG. 7 is a diagram showing a continuation of FIG.
- FIG. 8 is a diagram showing the structure of the constructed pCAG-gp64 vector.
- glycylsarcosine was diluted with HBSS (pH 6.0) to a final concentration to prepare a substrate solution.
- mouse monoclonal antibodies (clone 119, clone 253, and clone 113) that recognize the extracellular region of human PepTl were diluted with PBS to a final concentration of 200 g / mL to obtain an antibody solution.
- 20 L (50, ug protein) of PepTl-expressing budding baculovirus solution with His-tag added to the N-terminal and 20 L of the antibody solution were mixed and pre-incubated at 37 ° C for 1 hour.
- reaction stop solution ice-cold HBSS (pH 7.4)
- FIG. 1 shows the inhibition of PepTl activity by an anti-human PepTl monoclonal antibody.
- PepTl activity in the absence of antibody was expressed as 100 as a control.
- clone 119 inhibited PepT1 activity by about 20% and clone 253 by about 10% as compared to the control.
- This inhibition of PepTl activity was statistically significant (Student's t test). From the above, it was found that the anti-PepTl antibody could have the ability to inhibit the transport activity of PepTl.
- amino acid sequence of the heavy chain variable region of clone 119 is shown in SEQ ID NO: 1.
- AT-264 has a structure represented by the following structural formula. The following experiment confirmed that this compound was an inhibitor of peptide transporter (PepT).
- AT-264 was dissolved in RPMI1640-10 mM Hepes (hereinafter abbreviated as medium), 0.5% ethanol and 0.5% DMS0 to prepare a 2.5 mM AT-264 solution. This solution was diluted with a medium to prepare 0.625 and 0.0625 mM AT-264 solutions.
- the human vicinal cancer strain AsPC-1 was prepared at 5 ⁇ 10 4 cells / mL in a medium containing 50% FBS. This suspension was seeded at 40 zL / well (2 ⁇ 10 3 cells) on a 96-well plate coated with Collagen type I, and 160 L of AT-264 solution was added. C0 2 incubator and cultured for 6 days (100 units / mL penicillin after 2 days of culture, added 0. lmg / mL streptomycin), after 6 days of culture was quantified the number of viable cells in MTS assay.
- Figure 3 shows the results of the cell proliferation test.
- AT-264 In the presence of 2 mM AT-264, cell growth was inhibited by about 30%, and even at 0.5 mM, although slightly. Under a microscope, no morphological change of AsPC-1 was observed even in the presence of AT-264. From the results of RT-PCR, the expression of PepTl was more predominant in AsPC-1 than in PepT2. Based on the above, it was considered that the suppression of cell proliferation by AT-264 was due to the inhibition of PepTl function rather than nonspecific cytotoxicity.
- AT-264 was dissolved in RPMI1640-lOmM Hepes, 100 units / mL penicillin, 0.1 mg / mL streptomycin (hereinafter abbreviated as medium), 0.5% ethanol, 0.5% DMS0, and 2.5 mM AT- 264 solutions were prepared. This solution was diluted with a medium to prepare 0.625 and 0.0625 mM AT-264 solutions. BxPC-3 was adjusted to 5 ⁇ 10 4 cells / mL in a medium containing 50% FBS. The suspension was seeded at 40 ⁇ L / well (2 ⁇ 10 3 cells) on a 96-well plate coated with Collagen type 1, and 160 L of AT-264 solution was added thereto. C0 to 6 ⁇ cultured in 2 incubator, the number of viable cells was quantified by MTS assay after 6 days in culture.
- Figure 5 shows the results of the cell proliferation test.
- Cell proliferation was inhibited by about 75% in the presence of 2mM AT-264 and about 20% at 0.5mM. Under microscopic observation, no morphological change of B X PC-3 was observed even in the presence of AT-264.
- the expression of PepT2 was predominant in BxPC-3 as compared to PepTl. From the above, it was considered that the cell growth suppression by AT-264 was not due to cytotoxicity but due to inhibition of PepT2 function. Therefore, it was found that the substance that inhibits the transport activity of PepTl or Pe pT2 becomes a cytostatic.
- mice were prepared according to the method described in International Patent Application Publication No. W0 03/104453. That is,
- the gp64 gene sequence (GenBank Acc No. 9627742) is designated as type I, 5 'primer 64F1 with EcoRI recognition sequence and KOZ AK sequence at the 5' end, and 3 'primer 64R1 with EcoRI recognition sequence at the 5' end (Fig. 6 Using FIG. 7), PCR was performed under the following conditions.
- the composition of the PCR reaction solution is xlO ExTaq buffer 5 ⁇ , ExTaq included dNTP 4 ⁇ , ⁇ ⁇ le / L 64F1 ⁇ ⁇ ⁇ , 10 ⁇ mol / L 64R1 ⁇ ⁇ ⁇ , 500 pg / ⁇ ⁇ pBac- ⁇ -blue ⁇ ⁇ ⁇ , 5 unit / ⁇ ⁇ ExTaq 0.5 ⁇ ⁇ , diw 37.5 ⁇ L.
- the reaction sequence is as follows.
- E. coli DH5a was transformed. Perform colony PCR using T7 and SP6 primers and The clones containing the target gene were identified by analyzing the nucleotide sequence using the ABI Prism377 DNA sequencer, BigDye Cycle Sequence kit, and T7 or SP6 primers using the clones in which the clones were confirmed. From this clone, a fragment containing gp64, which was confirmed to have no mutation in the nucleotide sequence, was excised with EcoRI, inserted into pCAGGSl that was also EcoRI-powered, and transformed into E. coli DH5 ⁇ . The clone as designed was 37 ° C De ⁇ cultured using LB medium 250 mL, to give a fine papermaking 5 8 1.6 ⁇ 8 plasmids using Endofree MAXI kit.
- the DNA fragment for injection was prepared as follows. PCAGGS Betata one that was first ⁇ the g P 64 gene -; a (pCAG gp64 Figure 8), was treated with Sail and Pstl, was excised fragment (about 3. 8 kb) containing the gp64 gene. This fragment (about 3.8 kb) was recovered with a Gel Extraction Kit (QIAGEN), and diluted with PBS to 3 ng / ⁇ l to obtain a DNA fragment for injection.
- PCAGGS Betata one that was first ⁇ the g P 64 gene -; a (pCAG gp64 Figure 8), was treated with Sail and Pstl, was excised fragment (about 3. 8 kb) containing the gp64 gene. This fragment (about 3.8 kb) was recovered with a Gel Extraction Kit (QIAGEN), and diluted with PBS to 3 ng / ⁇ l to obtain a DNA fragment for injection.
- QIAGEN Gel Extraction Kit
- Mouse pronuclear stage eggs to which DNA fragments were injected were collected as follows. First, 5 iv of PMSG was intraperitoneally administered to Balb / c female mice (CLEA Japan), and 48 hours later, 5 iv of hCG was intraperitoneally administered to perform superovulation. . This female mouse was crossed with a male mouse of the same strain. On the morning following mating, the oviduct of the mouse whose plug was confirmed was allowed to flow, and the mouse pronuclear stage eggs were collected.
- the DNA fragment for injection was injected into pronuclear stage eggs using a micromanipulator (Latest technology of gene targeting (Yodosha), 190-207 20000).
- the DNA fragment was injected into 373 BALB embryos, and the next day, 216 embryos that had developed at the 2-cell stage were placed in the oviduct of the recipient female on day 1 of pseudopregnancy, about 10 per side (2 per animal). (Around 0).
- PepTl-expressing budding baculovirus used as an immunogen was prepared as follows.
- PepTl is a transporter that is a membrane protein.
- the structure of PepTl is known (GenBank XM-007063, J. Biol. Cem. 270 (12): 6456-6463 (1995)).
- the full-length PepTl gene was isolated from the human kidney library using PCR.
- the transfer vector pBlueBacHis-PepTl was prepared by inserting the full-length human PepTl gene into P BlueBacHis2A (Invitrogen), followed by Bac-N-Blue transfection kit.
- a recombinant virus for human PepTl expression was prepared by introducing a transfer vector into Sf9 cells together with Bac-N-Blue DNA using (Invitrogen). That is, pBlueBacHis-PepTl was added to Bac-N-Blue DNA, and 1 mL of Grace's medium (GIBC0) 20 iL of Cell FECTIN reagent was added, mixed, and allowed to stand at room temperature for 15 minutes. 2 ⁇ 10 6 Sf9 cells washed once with Grace's medium were dropped.
- GIBC0 Grace's medium
- an antibody that binds to PepT has the ability to inhibit the transport activity of a peptide transporter.
- These antibodies can be used as cytostatic agents, for example, for treatment and prevention of cancer.
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- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Peptides Or Proteins (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04723785A EP1621553A4 (en) | 2003-03-28 | 2004-03-26 | ANTIBODIES INHIBITING TRANSPORT ACTIVITY OF PEPTIDE TRANSPORTERS |
| US10/550,987 US7731960B2 (en) | 2003-03-28 | 2004-03-26 | Antibodies that inhibit transport activity of peptide transporters |
| JP2005504209A JP4551326B2 (ja) | 2003-03-28 | 2004-03-26 | ペプチドトランスポーターの輸送活性を阻害する抗体 |
| US12/712,982 US20100247539A1 (en) | 2003-03-28 | 2010-02-25 | Antibodies that Inhibit Transport Activity of Peptide Transporters |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2003/003975 WO2003083116A1 (en) | 2002-03-29 | 2003-03-28 | Emthod of screening transporter inhibitor |
| JPPCT/JP03/03975 | 2003-03-28 | ||
| JP2003110898 | 2003-04-15 | ||
| JP2003-110898 | 2003-04-15 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/712,982 Continuation US20100247539A1 (en) | 2003-03-28 | 2010-02-25 | Antibodies that Inhibit Transport Activity of Peptide Transporters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004087762A1 true WO2004087762A1 (ja) | 2004-10-14 |
Family
ID=35529802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/004331 Ceased WO2004087762A1 (ja) | 2003-03-28 | 2004-03-26 | ペプチドトランスポーターの輸送活性を阻害する抗体 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US7731960B2 (ja) |
| EP (1) | EP1621553A4 (ja) |
| JP (2) | JP4551326B2 (ja) |
| WO (1) | WO2004087762A1 (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050004227A1 (en) * | 2001-10-16 | 2005-01-06 | Ryoichi Saitoh | Cell growth inhibitor |
| ATE458498T1 (de) * | 2001-12-04 | 2010-03-15 | Chugai Pharmaceutical Co Ltd | Zellwachstumshemmer mit anti-pept-antikörper |
| JPWO2003083116A1 (ja) * | 2002-03-29 | 2005-08-04 | 中外製薬株式会社 | トランスポーター阻害物質スクリーニング方法 |
| US7750204B2 (en) * | 2002-06-05 | 2010-07-06 | Chugai Seiyaku Kabushiki Kaisha | Methods for producing antibody |
| JP4551326B2 (ja) * | 2003-03-28 | 2010-09-29 | 中外製薬株式会社 | ペプチドトランスポーターの輸送活性を阻害する抗体 |
| EP1731032B1 (en) * | 2004-03-31 | 2016-10-19 | Chugai Seiyaku Kabushiki Kaisha | Transgenic mice carrying gene for soluble form of membrane protein useful for antibody production against a target antigen, and methods using thereof |
| EP3177637B8 (en) | 2014-08-06 | 2020-08-19 | Georgia State University Research Foundation, Inc. | Kpv for treating colorectal cancer and ibd |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003033024A1 (fr) * | 2001-10-16 | 2003-04-24 | Chugai Seiyaku Kabushiki Kaisha | Inhibiteur de proliferation cellulaire |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL108499A (en) | 1993-02-04 | 2000-02-29 | Lilly Co Eli | Mammalian influx peptide transporter |
| US5500346A (en) | 1993-06-29 | 1996-03-19 | Eli Lilly And Company | Monoclonal antibodies to human influx peptide transporter |
| US5849525A (en) | 1994-03-09 | 1998-12-15 | Brigham And Women's Hospital, Inc. | Compositions corresponding to a proton-coupled peptide transporter and methods of making and using same |
| JPH08134100A (ja) | 1994-11-09 | 1996-05-28 | Unitika Ltd | 糖鎖特異的抗体の製造方法 |
| KR19990071666A (ko) | 1995-11-30 | 1999-09-27 | 이경하 | 술파미드 유도체 |
| FR2761994B1 (fr) | 1997-04-11 | 1999-06-18 | Centre Nat Rech Scient | Preparation de recepteurs membranaires a partir de baculovirus extracellulaires |
| JPH11172A (ja) | 1997-06-11 | 1999-01-06 | Snow Brand Milk Prod Co Ltd | ペプチド輸送タンパク質遺伝子を含むdna、ベクター及び微生物 |
| US6867017B1 (en) | 1998-10-23 | 2005-03-15 | The United States Of America As Represented By The Department Of Health And Human Services | ATP-binding transporter (ABC7) and methods for detection of anemia and ataxia |
| AU776865B2 (en) | 1998-11-10 | 2004-09-23 | University Of Rochester | T cells specific for target antigens and methods and vaccines based thereon |
| JP4552056B2 (ja) | 1999-11-15 | 2010-09-29 | 独立行政法人科学技術振興機構 | 後天的免疫寛容の獲得方法 |
| JP2001197846A (ja) | 2000-01-18 | 2001-07-24 | Ys New Technology Kenkyusho:Kk | 免疫寛容動物の作製方法 |
| AU2002236526B9 (en) * | 2000-11-15 | 2008-05-01 | The Government Of The United States Of America, Represented By The Secretary, Department Of Health And Human Services | Sol-fusin: use of GP64-6His to catalyze membrane fusion |
| ATE458498T1 (de) * | 2001-12-04 | 2010-03-15 | Chugai Pharmaceutical Co Ltd | Zellwachstumshemmer mit anti-pept-antikörper |
| JPWO2003083116A1 (ja) | 2002-03-29 | 2005-08-04 | 中外製薬株式会社 | トランスポーター阻害物質スクリーニング方法 |
| US7750204B2 (en) * | 2002-06-05 | 2010-07-06 | Chugai Seiyaku Kabushiki Kaisha | Methods for producing antibody |
| US7393531B2 (en) * | 2003-01-21 | 2008-07-01 | Arius Research Inc. | Cytotoxicity mediation of cells evidencing surface expression of MCSP |
| US20040223970A1 (en) * | 2003-02-28 | 2004-11-11 | Daniel Afar | Antibodies against SLC15A2 and uses thereof |
| JP4551326B2 (ja) * | 2003-03-28 | 2010-09-29 | 中外製薬株式会社 | ペプチドトランスポーターの輸送活性を阻害する抗体 |
| EP1731032B1 (en) | 2004-03-31 | 2016-10-19 | Chugai Seiyaku Kabushiki Kaisha | Transgenic mice carrying gene for soluble form of membrane protein useful for antibody production against a target antigen, and methods using thereof |
-
2004
- 2004-03-26 JP JP2005504209A patent/JP4551326B2/ja not_active Expired - Fee Related
- 2004-03-26 US US10/550,987 patent/US7731960B2/en not_active Expired - Fee Related
- 2004-03-26 WO PCT/JP2004/004331 patent/WO2004087762A1/ja not_active Ceased
- 2004-03-26 EP EP04723785A patent/EP1621553A4/en not_active Ceased
-
2010
- 2010-02-25 US US12/712,982 patent/US20100247539A1/en not_active Abandoned
- 2010-06-01 JP JP2010125859A patent/JP2010248202A/ja not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003033024A1 (fr) * | 2001-10-16 | 2003-04-24 | Chugai Seiyaku Kabushiki Kaisha | Inhibiteur de proliferation cellulaire |
Non-Patent Citations (2)
| Title |
|---|
| LIANG R. ET AL: "Human Intestinal H+/Peptide cotransporter", J. BIOL. CHEM., vol. 270, no. 12, 1995, pages 6456 - 6463, XP002912968 * |
| LIU W. ET AL: "Molecular cloning of PEPT 2, a new member of the H+/peptide cotransporter family, from human kidney", BIOCHIMICA ET BIOPHYSICA ACTA, vol. 1235, 1995, pages 461 - 466, XP002980263 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4551326B2 (ja) | 2010-09-29 |
| US20100247539A1 (en) | 2010-09-30 |
| JPWO2004087762A1 (ja) | 2006-08-24 |
| EP1621553A1 (en) | 2006-02-01 |
| JP2010248202A (ja) | 2010-11-04 |
| US7731960B2 (en) | 2010-06-08 |
| EP1621553A4 (en) | 2006-08-23 |
| US20060210569A1 (en) | 2006-09-21 |
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