WO2020197227A1 - 간세포암 진단용 바이오마커 세레브론 및 이에 특이적인 신규한 단일클론항체 - Google Patents
간세포암 진단용 바이오마커 세레브론 및 이에 특이적인 신규한 단일클론항체 Download PDFInfo
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/575—Immunoassay; Biospecific binding assay; Materials therefor for cancer
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- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
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- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/10—Cells modified by introduction of foreign genetic material
- C12N5/12—Fused cells, e.g. hybridomas
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- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues
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- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/158—Expression markers
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- G01N2333/46—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from vertebrates
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- G01N2333/46—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from vertebrates
- G01N2333/47—Assays involving proteins of known structure or function as defined in the subgroups
- G01N2333/4701—Details
- G01N2333/471—Pregnancy proteins, e.g. placenta proteins, alpha-feto-protein, pregnancy specific beta glycoprotein
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- G01N2800/00—Detection or diagnosis of diseases
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- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/56—Staging of a disease; Further complications associated with the disease
Definitions
- the present invention relates to the use of Cerebron as a biomarker for diagnosis of hepatocellular carcinoma and to a novel monoclonal antibody specific to Cerebron (CRBN), and in more detail, by using CRBN as a biomarker for diagnosis of hepatocellular carcinoma, diagnosis of hepatocellular carcinoma Or a composition for predicting the prognosis, a kit, a method for providing information for diagnosing or predicting the prognosis of hepatocellular carcinoma, two novel monoclonal antibodies that specifically bind to CRBN, and a hybridoma cell producing the same .
- Hepatocellular carcinoma is a primary liver cancer that occurs in the liver.According to the 2014 national cancer registration statistics, it ranks 6th among all cancers, but the 5-year survival rate is only 32.8%, making it a very high mortality rate. In particular, in Asian countries, including Korea, where the hepatitis virus carrier rate is high, the incidence is high, and it is one of the cancers with a poor prognosis, which is the second or third place compared to cancer incidence, and prevention and early detection are important.
- AMPK adenosine monophosphate-activated protein kinase
- AMPK is a heterotrimeric protein complex composed of three subunits of ⁇ , ⁇ , and ⁇ , and plays an important role in regulating sugar, lipid, and cholesterol metabolism.
- cereblon known as a substrate receptor for cullin-ring ubiquitin lipase (CRL)
- CBL cullin-ring ubiquitin lipase
- the CRBN protein is found in a variety of tissues including the brain, placenta, retina, skeletal muscle, liver, kidney, pancreas, spleen, testis, prostate, and small intestine. According to conventional studies on CRBN, it is possible to predict the response to immunomodulatory drugs in multiple myeloma and leukemia through CRBN levels, and high CRBN levels increase the effectiveness of immunomodulatory drugs and have been found to be associated with patient survival. lost. CRBN has been shown to be the only protein that inhibits the activity of endogenous AMPK, and it is expected to develop biomarkers for other tumors using this.
- Korean Patent Application Publication No. 10-2014-0024914 discloses a method for the treatment of cancer and inflammatory diseases using cerebron (CRBN) as a predictor, but CRBN-DDB1 and/or CRBN E3 ubiquitin-ligase It only presents a treatment method using a compound that directly binds to the complex and prevents CRBN from functioning properly, but there is no mention of monoclonal antibodies that specifically bind to CRBN.
- cerebron cerebron
- the present inventors investigated the expression of CRBN protein in the tissues of hepatocellular carcinoma patients, analyzed the recurrence and survival of hepatocellular carcinoma after surgery in the patient to be studied, to determine the possibility of CRBN as a biomarker for early diagnosis and prognosis of hepatocellular carcinoma. Evaluation and verification were conducted, and the present invention was completed by producing two novel monoclonal antibodies that specifically bind to CRBN and demonstrating the possibility of diagnosing hepatocellular carcinoma and predicting prognosis thereof.
- an object of the present invention is to provide a composition and kit for diagnosing hepatocellular carcinoma or predicting prognosis using CRBN.
- Another object of the present invention is to provide a method of providing information for diagnosing hepatocellular carcinoma or predicting prognosis using CRBN.
- Another object of the present invention is to provide a monoclonal antibody specifically binding to CRBN and hybridoma cells producing the same.
- the present invention provides a composition for diagnosing hepatocellular carcinoma or predicting prognosis, including an agent measuring the level of the mRNA of the CRBN gene or the protein expressed therefrom.
- the agent for measuring the mRNA level of the gene may include a primer pair, a probe or an antisense nucleotide specifically binding to the gene.
- the agent for measuring the level of the protein may include an antibody or aptamer specific for the protein.
- the antibody is from the group consisting of a monoclonal antibody produced by a hybridoma cell of accession number KCTC18596P and a monoclonal antibody produced by a hybridoma cell line of accession number KCTC18598P. It may contain one or more selected monoclonal antibodies.
- the present invention also provides a kit for diagnosing hepatocellular carcinoma or predicting prognosis comprising the above-described composition.
- the kit may be an RT-PCR kit, a competitive RT-PCR kit, a real-time RT-PCR kit, a DNA chip kit, or a protein chip kit.
- the present invention also provides a method of providing information for diagnosis of hepatocellular carcinoma comprising the following steps:
- the method for providing information for diagnosing hepatocellular carcinoma includes the (c) mRNA measured in the biological sample of step (a) or the level of the protein expressed therefrom is a normal individual or the (a) If it is higher than that measured in the biological sample isolated from the biological sample of the individual in step ), it may further include determining as hepatocellular carcinoma.
- the present invention also provides a method for providing information for predicting the prognosis of hepatocellular carcinoma comprising the following steps:
- the method for providing information for predicting the prognosis of hepatocellular carcinoma is (c) mRNA of the CRBN gene measured in a biological sample isolated from the hepatocellular carcinoma tissue of step (a) or expression therefrom. If the level of the protein to be obtained is two or more times higher than that measured in a biological sample isolated from surrounding normal tissue, determining that the protein has a poor prognosis may be further included.
- the method of providing information for predicting the prognosis of hepatocellular carcinoma further includes the following steps:
- step (d-1) The level of the CRBN gene mRNA or protein expressed therefrom measured in the biological sample isolated from the hepatocellular carcinoma tissue in step (a) is twice that measured in the biological sample isolated from the surrounding normal tissue. If the abnormality is high, classifying the CRBN high-expression patient group, and if less than two times, classifying the CRBN low-expression patient group;
- the present invention provides a hybridoma cell of accession number KCTC18596P and a monoclonal antibody that specifically binds to cerebron (CRBN) produced thereby.
- the monoclonal antibody may specifically bind to a region of cerebron including one or more amino acid sequences selected from the group consisting of SEQ ID NOs: 3 and 6.
- the present invention also provides hybridoma cells of accession number KCTC18598P and monoclonal antibodies that specifically bind to cerebron (CRBN), produced thereby.
- the monoclonal antibody may specifically bind to a region of cerebron including the amino acid sequence of SEQ ID NO: 3.
- the CRBN-specific monoclonal antibody of the present invention has significantly improved diagnostic sensitivity and specificity compared to the conventional CRBN polyclonal antibody, and is effective in early diagnosis of hepatocellular carcinoma and predicting the prognosis after surgery.
- the difference in the expression level of the CRBN protein shows not only the early diagnosis of hepatocellular carcinoma patients, but also the predictive power of microvascular invasion, which is an important factor in predicting the prognosis of hepatocellular carcinoma. It is expected to be used as a diagnostic marker.
- FIG. 1 is a photograph confirming the expression level of CRBN protein in tumor cell tissues of hepatocellular carcinoma and normal cell tissues around the same by immunohistochemistry.
- FIG 3 is a graph showing a comparison of the cumulative tumor recurrence rate (left) and patient survival rate (right) of the CRBN high-expression group (lower graph line) and the low-expression group (upper graph line).
- FIG. 4 is a graph showing the comparison of the cumulative tumor recurrence rate (left) and patient survival rate (right) according to the presence or absence of microvascular invasion (upper graph line; patient group without microvascular infiltration, lower graph line; patient group with microvascular infiltration) ).
- Figure 5 (A) is a Western blot analysis comparing the expression level of CRBN according to the cell line
- Figure 3 (B) shows the results of the Western blot analysis comparing the expression level of MMP-9 and MMP-2 according to the cell line.
- FIG. 9 is a diagram showing an antigenic peptide sequence suitable for production of a monoclonal antibody among human CRBN protein sequences, and is a diagram showing homology with the sequence of a mouse.
- hepatocellular carcinoma is a cancer with a very high mortality rate
- prevention and early detection are very important, and development of a biomarker capable of reliably early diagnosis is required.
- the present inventors evaluated and verified the possibility of CRBN as a biomarker for early diagnosis and prognosis of hepatocellular carcinoma, and also produced two novel monoclonal antibodies that specifically bind to CRBN to diagnose and prognose hepatocellular carcinoma.
- a solution to the above-described problem was sought by proving predictability.
- a first aspect of the present invention relates to a composition for diagnosing hepatocellular carcinoma or predicting prognosis, and a kit comprising the same, comprising an agent measuring the level of the mRNA of the CRBN gene or a protein expressed therefrom.
- CRBN in the present invention refers to "Cerebron”.
- CRBN (cereblon) protein is a substrate receptor for cullin-ring ubiquitin ligase (CRL) and is known to cause mild mental retardation when mutations in the cerebron gene appear.
- CTL cullin-ring ubiquitin ligase
- CRBN is known as a protein that directly binds to AMPK and inhibits the activation of AMPK, and it has been reported that it can treat metabolic diseases by activating AMPK by inhibiting the expression of CRBN.
- the type of the CRBN protein is not particularly limited, but may preferably be a human CRBN protein.
- the CRBN protein is encoded by the CRBN gene, and the CRBN protein and the gene encoding it include all types of CRBN protein and CRBN gene that can occur in an individual to be diagnosed, respectively.
- the term "CRBN protein” in the present invention may include a known non-mutated form consisting of 442 amino acids or a mutated form of a CRBN protein in which a specific amino acid substitution, insertion, deletion, etc. has occurred, and the non-mutated or It may also contain a portion of the mutated CRBN protein.
- the term "CRBN gene” includes a base sequence encoding all of the above-described CRBN proteins.
- CRBN protein of the present invention may be a human cerebron protein represented by the amino acid sequence of Human CRBN (442 aa) of SEQ ID NO: 1, but is not limited thereto.
- the term "agent for measuring the expression level of the mRNA of CRBN or its protein” means a molecule that can be used to confirm the expression level of the CRBN gene or the protein encoded by these genes of the present invention, preferably May be a primer pair, a probe or antisense nucleotide that specifically binds to the CRBN gene, or an antibody or aptamer specific for the protein encoded by the CRBN gene.
- an antibody is a term known in the art and refers to a specific protein molecule directed against an antigenic site.
- an antibody refers to an antibody that specifically binds to the marker of the present invention, and such an antibody clones each gene into an expression vector according to a conventional method to obtain a protein encoded by the marker gene.
- the form of the antibody of the present invention is not particularly limited, and any polyclonal antibody, monoclonal antibody, or any one having antigen-binding properties is also included in the antibody of the present invention, and all immunoglobulin antibodies are included. Furthermore, the antibody of the present invention also includes special antibodies such as humanized antibodies.
- the antibody against the protein encoded by the biomarker gene of the present invention may be any antibody that can be prepared by a method known in the art.
- an antibody used for detection of a cancer diagnostic marker of the present invention may include a complete form having two full-length light chains and two full-length heavy chains as well as functional fragments of antibody molecules.
- the functional fragment of the antibody molecule means a fragment having at least an antigen-binding function, and may be Fab, F(ab'), F(ab') 2 , Fv, etc., but is not particularly limited thereto.
- the kit is one selected from the group consisting of a monoclonal antibody produced by a hybridoma cell of accession number KCTC18596P and a monoclonal antibody produced by a hybridoma cell line of accession number KCTC18598P. It includes the above monoclonal antibodies, and the description of these antibodies will be described in more detail in the fourth aspect of the present invention.
- the term "aptamer” refers to a single-stranded oligonucleotide, and refers to a nucleic acid molecule having binding activity to a predetermined target molecule.
- the aptamer may have various three-dimensional structures according to its base sequence, and may have high affinity for a specific substance such as an antigen-antibody reaction.
- the aptamer can inhibit the activity of a given target molecule by binding to a given target molecule.
- the aptamer of the present invention may be RNA, DNA, a modified nucleic acid, or a mixture thereof, and the form thereof may be linear or cyclic, but is not limited thereto.
- the aptamer having binding activity to CRBN can be easily prepared by a person of ordinary skill in the art by referring to each nucleotide sequence according to a known method.
- the term "primer” is a nucleic acid sequence having a short free 3'hydroxyl group, which can form a complementary template and a base pair, and is a starting point for copying the template. It refers to a short nucleic acid sequence that functions as a branch.
- PCR amplification is performed using the sense and antisense primers of the marker polynucleotide of the present invention to predict the diagnosis or prognosis of hepatocellular carcinoma through the degree of production of a desired product.
- the PCR conditions, the length of the sense and antisense primers can be modified based on those known in the art.
- the term "probe” refers to a nucleic acid fragment such as RNA or DNA corresponding to a short number of bases to several hundreds of bases capable of specific binding to mRNA, and is labeled You can check the presence or absence of a specific mRNA.
- the probe may be manufactured in the form of an oligonucleotide probe, a single stranded DNA probe, a double stranded DNA probe, an RNA probe, or the like.
- hybridization is performed using a probe complementary to the CRBN polynucleotide of the present invention, and the prognosis of hepatocellular carcinoma can be predicted through the degree of hybridization. Selection of suitable probes and conditions for hybridization can be modified based on those known in the art.
- the primer or probe of the present invention can be chemically synthesized using a phosphoramidite solid support method or other well known method.
- Such nucleic acid sequences can also be modified using a number of means known in the art. Non-limiting examples of such modifications include methylation, encapsulation, substitution of one or more homologs of natural nucleotides, and modifications between nucleotides, such as uncharged linkers (e.g., methyl phosphonate, phosphotriester, phosphoro Amidates, carbamates, etc.) or to charged linkers (eg phosphorothioate, phosphorodithioate, etc.).
- uncharged linkers e.g., methyl phosphonate, phosphotriester, phosphoro Amidates, carbamates, etc.
- charged linkers eg phosphorothioate, phosphorodithioate, etc.
- the kit of the present invention can be used to predict the diagnosis and prognosis of hepatocellular carcinoma by checking the mRNA expression level of the CRBN gene or the expression level of the protein encoded by these genes.
- the kit for measuring the mRNA expression level of the CRBN gene may be a kit including essential elements necessary for performing RT-PCR.
- RT-PCR kits include test tubes or other suitable containers, reaction buffers, deoxynucleotides (dNTPs), Taq-polymerase and reverse transcriptases, DNase, RNase inhibitors, DEPC-water, in addition to each primer pair specific for the marker gene. DEPC-water), sterilized water, and the like.
- the kit of the present invention may be a kit for detecting CRBN including essential elements necessary for performing a DNA chip.
- the DNA chip kit includes a substrate to which cDNA corresponding to a gene or a fragment thereof is attached as a probe, and the substrate may include a cDNA corresponding to a quantitative control gene or a fragment thereof.
- the kit for measuring the expression level of a protein encoded by CRBN in the present invention is a substrate, a suitable buffer solution, 2 labeled with a color developing enzyme or a fluorescent substance for immunological detection of an antibody. Secondary antibodies and chromogenic substrates, and the like.
- the substrate may be a nitrocellulose membrane, a 96-well plate synthesized with polyvinyl resin, a 96-well plate synthesized with polystyrene resin, and a slide glass made of glass, and the coloring enzyme is peroxidase, alkaline force. Fatase (alkaline phosphatase) can be used, FITC, RITC, etc.
- ABTS 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid)
- OPD o-phenylenediamine
- TMB tetramethyl benzidine
- the kit of the present invention may include a monoclonal antibody produced by a hybridoma cell of accession number KCTC18596P and/or a monoclonal antibody produced by a hybridoma cell line of accession number KCTC18598P provided in the present invention.
- the kit of the present invention may further comprise a composition, solution or device having one or more other components suitable for the assay method.
- a second aspect of the present invention relates to a method of providing information for diagnosis of hepatocellular carcinoma comprising the following steps:
- the method for providing information for diagnosis of hepatocellular carcinoma of the present invention comprises: (c) a normal individual whose level of mRNA or protein expressed therefrom is measured in the biological sample of step (a) or the biological sample of the individual of step (a). If it is higher than that measured in the biological sample isolated from, it may further include determining as hepatocellular carcinoma.
- the term "measurement of mRNA expression level” is a process of determining the presence and expression level of the CRBN gene in a biological sample, and can be determined by measuring the amount of mRNA. Analysis methods for this include RT-PCR, competitive RT-PCR, Real-time RT-PCR, RNase protection method, and northern blotting. Alternatively, there may be a DNA chip (DNA chip technology), but is not limited thereto.
- protein expression level measurement is a process of determining the presence and expression level of a protein expressed in the CRBN gene in a biological sample, and an antibody that specifically binds to the protein expressed in the gene is Can be used to determine the amount of protein. Analysis methods for this include western blotting, ELISA (enzyme linked immunosorbentassay), radioimmunoassay (RIA), radial immunodiffusion, Ouchterlony immunodiffusion, and rocket immunity. Rocket immunoelectrophoresis, immunohistochemical staining, immunoprecipitation assay, complement fixation assay, immunofluorescence, immunochromatography, FACS analysis ( fluorescenceactivated cell sorter analysis) or protein chip technology, but is not limited thereto.
- biological sample refers to tissues, cells, whole blood, phlegm, serum, plasma, saliva, brain, skin, lymph nodes, spinal cord, cell culture supernatant, saliva, urine, ruptured eukaryotic cells and bacterial expression systems, etc. However, it is not limited thereto. These biological samples can be reacted with the monoclonal antibody of the present invention with or without manipulation to predict the presence of CRBN protein or the diagnosis and prognosis of hepatocellular carcinoma.
- the term "individual" of the present invention may mean all animals including humans who have developed or are likely to develop hepatocellular carcinoma.
- the animals may be mammals such as cattle, horses, sheep, pigs, goats, camels, antelopes, dogs, cats, etc. in need of treatment for symptoms similar to humans, but are not limited thereto.
- abnormal individual of the present invention means an individual who has not developed hepatocellular carcinoma or is not suspected of developing hepatocellular carcinoma.
- the expression level of the CRBN gene can be measured at the mRNA level or the protein level, and the isolation of the mRNA or protein from the biological sample can be performed using a known process.
- I can.
- the analysis method for measuring the mRNA level and the analysis method for measuring the protein level are as described above.
- the method for providing information for the diagnosis of hepatocellular carcinoma of the present invention is a monoclonal antibody produced by hybridoma cells of accession number KCTC18596P and/or a monoclonal antibody produced by hybridoma cell line of accession number KCTC18598P provided in the present invention. This can be done using antibodies.
- the present invention uses the monoclonal antibody to react with the CRBN protein of an isolated biological sample of an individual suspected of hepatocellular carcinoma or an individual who wants to check the prognosis after hepatocellular carcinoma surgery. It provides a method for providing information for diagnosing or predicting prognosis of hepatocellular carcinoma, comprising the step of detecting through.
- the method of providing information for diagnosing or predicting the prognosis of hepatocellular carcinoma of the present invention is to react the CRBN-specific monoclonal antibody of the present invention with an isolated biological sample of an individual suspected of hepatocellular carcinoma or a patient with hepatocellular carcinoma, and form an antigen-antibody complex.
- By detecting the CRBN protein it is possible to provide information for diagnosing hepatocellular carcinoma or predicting prognosis. Since CRBN is overexpressed in hepatocellular carcinoma, hepatocellular carcinoma can be diagnosed by comparing the expression level with a control such as normal cells or surrounding normal tissues, and the prognosis after surgery can be predicted, but is not limited thereto.
- the term "antigen-antibody complex” refers to a combination of a CRBN protein antigen in a sample and a monoclonal antibody according to the present invention that recognizes it, and the formation of such an antigen-antibody complex is performed by a colormetric method, and Any method selected from the group consisting of an electrochemical method, a fluorescence method, a luminometry, a particle counting method, a visual assessment, and a scintillation counting method Can be detected. However, it is not necessarily limited to these, and various applications and applications are possible.
- markers can be used to detect the antigen-antibody complex.
- Specific examples may be selected from the group consisting of enzymes, fluorescent substances, ligands, luminescent substances, microparticles, and radioactive isotopes, but are not necessarily limited thereto.
- Enzymes used as detection markers include acetylcholinesterase, alkaline phosphatase, ⁇ -D-galactosidase, horseradish peroxidase, ⁇ -latamase, and the like, and fluorescent substances include fluorescein.
- Phosphorus, Eu 3+ , Eu 3+ chelate or cryptate, etc. as a ligand, a biotin derivative, etc., as a luminescent material, an acridinium ester, an isoluminol derivative, etc., and a colloid as a microparticle Contains gold, colored latex, and the like, and radioactive isotopes include 57 Co, 3 H, 125 I, 125 I-Bonton Hunter's reagent and the like.
- the antigen-antibody complex can be detected using an enzyme immunosorbent assay (ELISA).
- Enzyme immunosorbent involves direct ELISA using a labeled antibody that recognizes an antigen attached to a solid support, and an indirect ELISA using a labeled secondary antibody that recognizes the capture antibody in a complex of antibodies that recognize an antigen attached to a solid support.
- ELISA direct sandwich ELISA using another labeled antibody that recognizes an antigen in a complex of an antibody and an antigen attached to a solid support, after reacting with another antibody that recognizes an antigen in a complex of an antibody and an antigen attached to a solid support It includes various ELISA methods, such as indirect sandwich ELISA using a labeled secondary antibody that recognizes this antibody.
- the monoclonal antibody of the present invention specifically recognizes CRBN using the antigen-antibody reaction, and at this time, it was confirmed that it has superior detection ability compared to the commercially available CRBN polyclonal antibody. By doing so, it was demonstrated that the antibody of the present invention can be usefully used for diagnosis or prognosis of hepatocellular carcinoma.
- a third aspect of the present invention relates to a method of providing information for predicting the prognosis of hepatocellular carcinoma comprising the following steps:
- the method for providing information for predicting the prognosis of hepatocellular carcinoma of the present invention includes (c) the mRNA of the CRBN gene measured in a biological sample isolated from the hepatocellular carcinoma tissue in step (a) or the level of the protein expressed therefrom. It may further include determining that it has a poor prognosis if it is twice or more higher than that measured in the biological sample isolated from.
- the level of the mRNA of the CRBN gene or the protein expressed therefrom measured in a biological sample isolated from the hepatocellular carcinoma tissue in step (a) is determined from surrounding normal tissues. If it is more than twice as high as measured in the isolated biological sample, it can be classified as a high-expressing CRBN group, and if it is less than two-fold, it can be classified as a low-expressing CRBN group.
- the level of additional hepatocellular carcinoma biomarkers from biological samples isolated from patients in the high-expression group The accuracy of prognosis prediction can be improved by checking.
- the method of providing information for predicting the prognosis of hepatocellular carcinoma of the present invention may specifically further include the following steps:
- step (d-1) The level of the CRBN gene mRNA or protein expressed therefrom measured in the biological sample isolated from the hepatocellular carcinoma tissue in step (a) is twice that measured in the biological sample isolated from the surrounding normal tissue. If the abnormality is high, classifying the CRBN high-expression patient group, and if less than two times, classifying the CRBN low-expression patient group;
- the expression level of the CRBN gene can be measured at the mRNA level or the protein level, and the isolation of the mRNA or protein from the biological sample is performed using a known process. can do.
- the analysis method for measuring the mRNA level and the analysis method for measuring the protein level are as described in the method for providing information for diagnosis of hepatocellular carcinoma.
- the mRNA of the CRBN gene measured from a sample of a hepatocellular carcinoma patient whose prognosis is known, or the amount of expression of the protein expressed therefrom, and the mRNA of the CRBN gene measured from a sample of a patient who wants to know the prognosis, or expressed therefrom It can be used to predict the prognosis of HCC patients by comparing the expression level of the protein and determining whether the expression level is increased or decreased. That is, as a result of comparing the expression levels, if the sample of the patient who wants to know the prognosis shows the expression level or expression pattern similar to that of the patient's known good prognosis, it can be predicted that it will have a good prognosis. If the expression level or expression pattern is similar to that of a known patient sample, it can be predicted that it will have a poor prognosis.
- the prognosis of a patient with hepatocellular carcinoma can be accurately predicted, and an appropriate treatment plan can be established according to the predicted prognosis. For example, for patients judged to have a good prognosis, it may be decided to pursue standard treatment or less invasive treatment options, and for patients judged to have a poor prognosis, use for patients with advanced stage hepatocellular carcinoma. You may decide to pursue a treatment that is either very aggressive or experimental.
- the term “good prognosis” does not progress to stage II, microvascular invasion does not occur, the cumulative tumor recurrence rate after surgery is low, or the survival rate after surgery is high. Can mean that.
- the term “poor prognosis” may mean that stage II progresses, microvascular infiltration occurs, a cumulative tumor recurrence rate after surgery is high, or a survival rate after surgery is low.
- the term "hepatocellular carcinoma patient with known prognosis” refers to a patient whose disease progression has been revealed among patients diagnosed with hepatocellular carcinoma.
- a patient or surgery confirmed to have a poor prognosis due to recurrence after undergoing a surgical operation due to hepatocellular carcinoma Patients who survive without recurrence after undergoing surgery or who have been cured and confirmed to have a good prognosis.
- patients who want to know the prognosis by obtaining and comparing the expression level or expression pattern of the mRNA of the CRBN gene or the protein expressed therefrom from samples collected from patients with known prognosis and samples from patients who want to know the prognosis.
- the prognosis can be accurately predicted.
- the progression from "poor prognosis" to "stage II” is according to the AJCC classification, one of the staging systems of hepatocellular carcinoma, which is universally used, and AJCC classification Is known to be effective in distinguishing the prognosis of surgical patients (Ueno S et al., Hepatol Res 2002;24:395-403.)
- AJCC classification one of the staging systems of hepatocellular carcinoma, which is universally used
- AJCC classification Is known to be effective in distinguishing the prognosis of surgical patients Ueno S et al., Hepatol Res 2002;24:395-403.
- the information provision method for predicting the prognosis of hepatocyte box of the present invention patients predicted with poor prognosis In addition to AJCC classification, UICC/AJCC, Okuda weapon, CLIP (Cancer of the Liver Italian Program) weapon, French weapon, CUPI (Chinese University Prognostic Index), JIS (Japan Integrated Staging
- AFP refers to alpha-fetoprotein
- blood (or serum) AFP measurement among tumor marker tests is the most commonly used diagnostic test for hepatocellular carcinoma.
- hepatocellular carcinoma has a clear limitation in predicting prognosis of Dail biomarkers due to the characteristics of patients with oncological diversity and cirrhosis.
- the present inventors confirmed that by detecting CRBN alone and CRBN and AFP in combination, the accuracy of diagnosis and prognosis of hepatocellular carcinoma can be improved (Table 3). Accordingly, by detecting CRBN alone and a combination of CRBN and AFP, hepatocellular carcinoma We proposed a method to diagnose HCC patients early and accurately and to predict the prognosis of HCC patients more accurately and in detail after surgery.
- the fourth aspect of the present invention relates to a monoclonal antibody that specifically binds to CRBN, and is produced by a monoclonal antibody produced by hybridoma cells of accession number KCTC18596P and/or hybridoma cells of accession number KCTC18598P. It provides a monoclonal antibody that specifically binds to Cerebron (CRBN).
- the term "monoclonal antibody” refers to an antibody molecule of a single molecular composition obtained from substantially the same antibody population, and such monoclonal antibody exhibits a single binding specificity and affinity for a specific epitope.
- immunoglobulins have a heavy and light chain and each heavy and light chain comprises a constant region and a variable region (the region is also known as a domain).
- the variable regions of the light and heavy chains include three multivariable regions and four structural regions (framework regions, FRs) called complementarity-determining regions (hereinafter referred to as "CDR").
- the CDRs mainly play a role in binding to the epitope of the antigen.
- the CDRs of each chain typically start from the N-terminus and are sequentially referred to as CDR1, CDR2, and CDR3, and are also identified by the chain in which a particular CDR is located.
- the monoclonal antibody may be in the form of a chimeric antibody or a humanized antibody with reduced immunogenicity for application to the human body.
- chimeric antibody refers to an antibody obtained by recombining the variable region of a mouse antibody and the constant region of a human antibody by DNA recombination technology, and the immune response of the chimeric antibody is Compared to that, it is greatly improved, so it can be used clinically.
- the term "humanized antibody” refers to an antibody in which all or a part of the CDR sequence of a mouse monoclonal antibody is grafted onto a human antibody.
- the CDR of a mouse monoclonal antibody is derived from a human antibody.
- the humanized variable region may be prepared by recombination with the FR of and may be prepared by recombining it with the constant region of a desirable human antibody, but is not limited thereto.
- the affinity of the humanized antibody is lowered, so the affinity can be improved by replacing the FR amino acid residue, which may affect the three-dimensional structure of the CDR, with an amino acid of the mouse antibody.
- the term "monoclonal antibody specifically binding to the CRBN (cereblon) protein” refers to an antibody capable of inhibiting the biological activity of the CRBN protein by binding to the CRBN protein.
- the anti-CRBN antibody and Can can be used interchangeably.
- the form of the monoclonal antibody of the present invention may include both whole antibodies and antibody fragments, and may be modified into chimeric antibodies or humanized antibodies.
- the CRBN protein is known to inhibit phosphorylation (activation) of AMPK by directly binding to the ⁇ subunit of the AMPK trimer, which is an intracellular energy sensor.
- the present inventors have found that the expression of CRBN is remarkably increased in hepatocellular carcinoma patients and prepared a monoclonal antibody capable of specifically detecting this.
- the monoclonal antibody of the present invention specifically binds to the site of CRBN Pep2: C-DMEEFHGRTLHD (SEQ ID NO: 3), and/or Pep5: C-DRIKKQLREWDENLKD (SEQ ID NO: 6) to specifically detect the expression level of CRBN
- Pep2 C-DMEEFHGRTLHD (SEQ ID NO: 3)
- Pep5 C-DRIKKQLREWDENLKD (SEQ ID NO: 6) to specifically detect the expression level of CRBN
- it since it has high sensitivity and specificity in diagnosing hepatocellular carcinoma or predicting prognosis after surgery, it can be usefully used for diagnosing and predicting hepatocellular carcinoma.
- the CRBN amino acid Pep2 C-DMEEFHGRTLHD (63-74 aa) (SEQ ID NO: 3)
- Pep4 C-GRQRFKVLELRTQSD (161-175aa) (SEQ ID NO: 5) site
- Pep5 C-DRIKKQLREWDENLKD (255 ⁇ 270aa) (SEQ ID NO: 6)
- a monoclonal antibody specifically binding to the CRBN of the present invention was prepared by using a fusion protein containing the site as an antigen protein (Example 1).
- the monoclonal antibody provided in the present invention not only specifically binds to CRBN, but also has a remarkably strong binding force compared to the commercially available CRBN polyclonal antibody. It was confirmed that the monoclonal antibody of the present invention was significantly overexpressed in hepatocellular carcinoma cells than in surrounding normal tissues, and decreased the activities of cancer metastasis-related MMP-2 and MMP-9 in liver cancer cell lines in which CRBN expression was suppressed, while CRBN overexpression It was confirmed that the activity of MMP-9 was increased in a CRBN protein-dependent manner in liver cancer cell lines.
- the CRBN expression level it was classified into a high-expression group and a low-expression group, and as a result of follow-up investigation of clinical indicators, it was confirmed that the progression of the HCC stage, the survival rate following HCC surgery, and the tumor recurrence rate can be predicted at a meaningful level.
- the present invention provides a method for preparing the monoclonal antibody described above.
- the monoclonal antibody of the present invention can be easily prepared by known monoclonal antibody manufacturing techniques.
- a method of preparing a monoclonal antibody can be performed by preparing a hybridoma using B lymphocytes obtained from an immunized animal (Koeher and Milstein, 1976, Nature, 256:495), or phage display (phage display). display) technology, but is not limited thereto.
- the monoclonal antibody of the present invention can be obtained from hybridoma cells produced by a cell fusion method known in the art.
- Hybridoma cells that secrete monoclonal antibodies are produced by fusing immune cells from an immunologically suitable host animal such as a mouse injected with an antigenic protein and a cancer cell line. The fusion of these two cells is fused through a method using polyethyleneglycol known in the art, and the antibody-producing cells are proliferated by a standard culture method. After subcloning by limited dilution is performed to obtain a homogeneous cell population, hybridoma cells capable of producing antigen-specific antibodies are cultured in large quantities in vitro or in vivo.
- Myeloma cells used for cell fusion include mouse-derived p3/x63-Ag8, p3-U1, NS-1, MPC-11, SP-2/0, F0, P3x63 Ag8, V653, S194, rat-derived R210, etc.
- Various cell lines can be used.
- the cell line used in a specific example of the present invention is myeloma cells SP-2/0.
- the above-mentioned hybridoma produced monoclonal antibody can be used without purification, and also various conventional methods such as dialysis, salt precipitation, ion exchange chromatography, size exclusion chromatography, affinity chromatography It can be used after being purified with high purity using the same.
- monoclonals are selected by enzyme immunosorbent method (ELISA).
- the monoclonal antibody of the present invention can be prepared by a phage display method known in the art.
- An antibody library using phage display technology is a method of expressing an antibody on the surface of phage by obtaining an antibody gene from B lymphocytes immediately without making hybridomas.
- phage display technology many existing difficulties associated with producing monoclonal antibodies by B-cell immortalization can be overcome.
- phage display technology includes: 1) inserting a random sequence of oligonucleotides into a gene site corresponding to the N-terminus of a coat protein pIII (or pIV) of the phage; 2) expressing a fusion protein of a portion of the native envelope protein and a polypeptide encoded by the random sequence oligonucleotide; 3) treating a receptor material capable of binding to the polypeptide encoded by the oligonucleotide; 4) eluting the peptide-phage particles bound to the receptor using a low pH or binding competitive molecule; 5) amplifying the phage eluted by panning in the host cell; 6) repeating the method to obtain the desired amount; And 7) determining the sequence of an active peptide from the DNA sequences of the phage clones selected by panning.
- the monoclonal antibody of the present invention can be prepared from hybridoma cells.
- Polynucleotides encoding monoclonal antibodies or phage display clones derived from hybridomas of the present invention can be easily isolated and sequenced using conventional procedures.
- oligonucleotide primers designed to specifically amplify the heavy and light chain coding regions from hybridoma or phage template DNA can be used.
- the polynucleotide Once the polynucleotide is isolated, it can be put into an expression vector, and then the expression vector can be introduced into a suitable host cell to produce a desired monoclonal antibody from a transformed host cell (ie, a transformant).
- the method for producing the monoclonal antibody of the present invention may be a method for producing a monoclonal antibody, including a step of amplifying an expression vector containing a polynucleotide encoding the monoclonal antibody, but is not limited thereto.
- the synthesized peptide was conjugated to Keyhole limpet hemocyanin (KLH) and Bandeiraea simplicifolia agglutinin (BSA) using SMCC (Succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate) and then subjected to ELISA screening.
- KLH Keyhole limpet hemocyanin
- BSA Bandeiraea simplicifolia agglutinin
- SMCC Succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate
- the recombinant CRBN antigen proteins PEP2, PEP4 and PEP5 (each 30 ⁇ g/ ⁇ l) prepared in Example 1 were mixed and phosphate buffered saline (PBS).
- Emulsions were prepared by diluting in 150 ⁇ l and mixing with an equal volume of complete Freund's adjuvant (Sigma). The emulsion was injected into the abdominal cavity of BALB/C (female, 8 weeks old) mice 4 times at 3 weeks intervals, 200 ⁇ l each.
- BALB/C female, 8 weeks old mice 4 times at 3 weeks intervals, 200 ⁇ l each.
- the spleen was excised and used for cell fusion 3 days after administration of the recombinant CRBN protein purified by tail vein.
- myeloma cells were prepared for cell fusion.
- SP2/O cells which are myeloma cells, were cultured, and the cell density was set to 2.5 ⁇ 5 ⁇ 10 4 /ml. SP2/O cells were diluted by 1/3 and prepared 24 hours before cell fusion.
- Cell fusion was performed as follows according to a general method using polyethylene glycol (Ed Harlow, David Lane: Antibodis, A laboratory manual. Cold Springs Harbor press, 1988 P139-244).
- the immunized mouse was anesthetized with ether and spleen cells located on the left side of the body were It was extracted. Splenocytes from the extracted spleen were isolated using a cell strainer (Falcon, USA), and diluted to a concentration of 1 ⁇ 10 8 cells/ml. 1 ⁇ 10 7 cells/ml of myeloma cells and 1 ml of PEG1500 (Sigma, USA) were mixed and fused.
- the cells were diluted in 200 ml of HAT (Sigma, USA) medium and then dispensed into 96-well microplates by 100 ⁇ l, and cultured in a 37° C. incubator supplied with 5% carbon dioxide.
- HAT Sigma, USA
- fusion cells that react specifically to CRBN were selected and screened using an enzyme immunological method to confirm whether or not antibodies were produced.
- the medium was exchanged on days 8 to 9, and cultured in cDMEM2 until well grown from 96 wells to 24 wells.
- the supernatant of the well changed color was collected and filled with cDMEM2, followed by ELISA test.
- wells were selected and transferred to 24 wells for culture. After culturing in 24 wells, ELISA test was again performed. Specifically, the concentration of the fused cells in 24 wells was checked, and the fused cells were diluted in 15 ml of the culture solution so that 0.5 cells/well in a 96 well plate. The fusion cell dilution solution was dispensed 150 ⁇ l per well.
- a well containing one cell was checked by microscopic examination.
- the supernatant of the well in which the cells were grown to some extent was harvested and confirmed by ELISA and Western blot, followed by primary screening.
- the fusion cells selected based on the first screening were transferred to 24 wells, cultured, centrifuged, and the supernatant was harvested and confirmed by ELISA and Western blot, followed by secondary screening.
- the fused cells selected based on the third screening were transferred to a 75T/C culture flask and cultured, and the absorbance was checked by ELISA to select only fused cells with an absorbance greater than 1.
- the finally selected fusion cells were named 1D3 and 4E11, respectively, and were deposited with the Korea Research Institute of Bioscience and Biotechnology Gene Bank (KCTC) as of August 30, 2017 (accession numbers: KCTC18596P (4E11), KCTC18598P (1D3)).
- Example 2 In order to produce monoclonal antibodies against CRBN from the final hybridoma cells selected in Example 2 ("1D3" and "4E11"), Pristane in the abdominal cavity of 7 to 8 weeks old female Balb/C mice (pristane) 500 ⁇ l was injected. The fused cells cultured in a 75T/C culture flask were collected and centrifuged, and then the supernatant was removed, put into phosphate buffer, and pipetted. 7 to 10 days after administration of Pristane, the fused cells [1D3 and 4E11] selected in Example 2 were injected into the peritoneal cavity of the mouse with 8 ⁇ 10 5 to 4 ⁇ 10 7 respectively.
- Protein G Fast Flow Bed stored in the stock solution (20% ethanol) was filled into the column in an appropriate amount, and 20% ethanol was poured down, and then washed with 5 Bed Volum of binding buffer (20 mM sodium phosphate, pH 7.0).
- the ascites solution was diluted in an appropriate amount with phosphate buffer and then loaded onto the Protein G column.
- 3 Bed Volum's binding buffer (20 mM sodium phosphate, pH 7.0) 0.5 ml of fractions were eluted with 3 Bed Volum's elution buffer (0.1 M glycine buffer, pH 3.0-2.5). Each fraction was neutralized with 35 ⁇ l of neutralization buffer (1 M Tris-HCl, pH 9.0).
- the hybridoma cells (1D3 and 4E11) of the present invention all had a binding reaction with the peptide derived from Cerebron, and in particular, it was found that the 4E11 clone showed a cross-reaction with PEP2 and PEP5.
- ELISA was performed to determine the isotype of the monoclonal antibody prepared in Example 3. Specifically, purified antibodies against each isotype of mice fished from rabbits were diluted to 10 ⁇ g/ml in carbonate buffer (pH 9.4) and then used in Maxisorp ELISA plates (Nunc, USA). 100 ⁇ l was added to each well, and reacted at 4° C. for 16 hours to coat the antibody. Each well coated with each isotype antibody was treated with a blocking buffer solution containing 1% BSA (PBS, 0.05% Tween-20, 1% BSA, 3% heat inactive horse serum) at 37°C for 1 hour. The reaction was blocked.
- BSA PBS, 0.05% Tween-20, 1% BSA, 3% heat inactive horse serum
- TMB 3,3',5,5'-tetramethylbenzidine
- substrate solution 100 ⁇ l of TMB (3,3',5,5'-tetramethylbenzidine) (Sigma, USA) substrate solution was added to each well, reacted in the dark for 30 minutes to develop color, and then treated with 2N H 2 SO 4 The enzyme reaction was stopped. After the reaction, the absorbance was measured at 450 nm using an ELISA reader (Perkinelmer Victor X3). The results are shown in [Table 2].
- Hepatocellular carcinoma tissue and surrounding normal liver tissue were cut into 5 ⁇ m using a microtome in a frozen state and then in a phosphate buffer (1 M Na 2 HPO 4 77.4 ml, 1 mM Na 2 HPO 4 22.6 ml, distilled water 900 ml) for 30 minutes at room temperature. ) was fixed to the slide with 4% paraformaldehyde. The fixed tissue was permeated in 0.5% Triton X-100 (Merck, Darmstadt, Germany) for 5 minutes and 2% NGS (normal goat serum) and 2% NGS (normal goat serum) and PBS (phosphate-buffered saline) for 1 hour at room temperature. goat serum) and incubated with a solution to block (blocking).
- Triton X-100 Merck, Darmstadt, Germany
- a primary antibody E-cadherin, 1:500, Cell Signaling Technology, Danvers, MA, USA and N-cadherin, 1:500, Abcam
- the primary antibody was detected with fluorescein isothiocyanate (FITC) or CY3 (cyanin) (Invitrogen, Carlsbad, CA, USA), and the secondary antibody, anti-rabbit, 1:500 , Invitrogen) or anti-mouse (anti-mouse, 1:2000, Invitrogen) at room temperature for about 1 hour.
- FITC fluorescein isothiocyanate
- CY3 cyanin
- anti-rabbit 1:500
- Invitrogen Invitrogen
- anti-mouse anti-mouse, 1:2000, Invitrogen
- Total protein was cultured and extracted by dissolving in Pro-Prep protein extraction solution (iNtRON Biotechnology, Boca Raton, FL, USA) at -20°C for 30 minutes. The lysate was centrifuged at 4° C. for 5 minutes at 20,217 x g. Protein concentration was measured using the Standard Bradford Assay (Bio-Rad, Hercules, CA, USA).
- the extracted 60 ⁇ g of protein was subjected to electrophoresis with 10% SDS-PAGE (sodium dodecyl sulfate-polyacrylamide gel) at room temperature and at 80 to 120 V, and the separated protein was subjected to PVDF (polyvinylidene fluoride) membrane at 4°C at 260 mA at 90 After moving for a minute, it was fixed for 1 hour at room temperature with 5% skim milk. A primary antibody was added to the fixed cell membrane, followed by incubation at 4° C. overnight.
- SDS-PAGE sodium dodecyl sulfate-polyacrylamide gel
- PVDF polyvinylidene fluoride
- polyclonal CRBN antibody (Sigma) was diluted 1:1000 in 5% skim milk, and actin (anti-rabbit) as a control was diluted 1:5000 in 5% skim milk. After incubation at 4° C. overnight, washing was repeated three times for 20 minutes with 1X TBST (Nacl 8.766 g/ Tris-base 1.211 g/ Tween20 500 ⁇ l).
- anti-mouse was diluted 1:2000 in 5% skim milk, incubated for 2 hours at room temperature, and washed three times for 20 minutes with 1X TBST, and the protein band was electrogenerated chemiluminescent (ECL). Visualization was performed using reagents (Millipore, Billerica, MA, USA). The density of the appropriate band was analyzed by measuring the reflectance density of a Bio-Rad GS-670 imaging densitometer.
- the medical records were reviewed retrospectively for 40 patients. Age, sex, operation name, preoperative ICG value, presence of hepatitis B surface antibody, and preoperative AFP and PIVKA were investigated. Based on histologic examination after surgery, liver cirrhosis, size and number of hepatocellular carcinoma, microvascular invasion, and stage were investigated. The disease-free period, recurrence, survival period and survival were investigated after surgery.
- the clinical indicators according to the expression level of the CRBN protein were compared with the recurrence and survival after surgery.
- a Chi-Square test was used, and continuous variables were compared with Student's t-test.
- the recurrence rate and survival rate were determined by the Kaplan-Meier method. Compared with the log-rank test. Statistical significance was determined when the p-value was less than 0.05.
- AFP a diagnostic marker for hepatocellular carcinoma
- Chang Liver(HeLa derivative) cell line (Sigma-Aldrich): a normal hepatocyte-like cell line derived from HeLa
- HepG2 cell line (Korean Cell Line Bank): obtained from hepatoblastoma of a 15-year-old male, the most representative cell line for studying human liver models
- Hepa1c1c7 cell line (CRL-2026): mouse-derived liver cancer cell line
- MMP-2 and MMP-9 72 kDa and 95 kDa can be simultaneously confirmed on a gel, so it is easy to check whether MMP-2 and MMP-9 are activated.
- collagenase buffer [50 mM Tris, 5 mM CaCl 2 , 1% Triton X-100] was added and placed in a shaker at 37°C to react. After 24 hours, the gel was washed once with 2.5% Triton X-100 solution, and stained with Coomassie Blue solution [1% Coomassie brilliant blue R250, 30% methanol, 10% acetic acid] for 2 hours. , The gel was observed by decolorizing twice for 30 minutes with a decolorization solution [30% methanol, 10% acetic acid].
- CRBN KD-HCC primary hepatocellular carcinoma cell line
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Abstract
Description
| PEP2 | PEP4 | PEP5 | 대조군 | |
| 1D3 | 1.511 | 0.062 | 0.229 | 0.068 |
| 4E11 | 1.270 | 0.091 | 0.827 | 0.079 |
| 1D3 | 4E11 | |
| IgG1 | 2.792 | 2.412 |
| IgG2a | 0.269 | 0.164 |
| IgG2b | 0.064 | 0.051 |
| IgG3 | 0.080 | 0.058 |
| IgA | 0.090 | 0.065 |
| IgM | 0.226 | 0.107 |
| Kappa | 2.555 | 0.606 |
| Lambda | 0.082 | 0.068 |
| CRBN 고발현 N=19 (47.5%) | CRBN 저발현 N=21 (52.5%) | p-value | ||||
| 환자의 평균 연령, y, 범위 | 56.3 ± 5.7 | 53.1 ± 7.5 | 0.25 | |||
| 성별(남/여) | 16/3 | 15/6 | 0.94 | |||
| 간 경변증 발생수, n (%) | 15 (78.9) | 20 (95.2) | 0.120 | |||
| HBsAg (+), n (%) | 19 (100) | 20 (95.2) | 0.335 | |||
| 수술 전 ICG-R15, %, 평균 | 15.3 ± 6.2 | 16.4 ± 5.4 | 0.692 | |||
| 수술명, n (%) | 0.755 | |||||
| Right hepatectomy | 2 (10.5) | 1 (4.8) | ||||
| Left hepatectomy | 1 (5.3) | 2 (9.5) | ||||
| Right anterior sectionectomy | 5 (26.3) | 4 (19) | ||||
| Right posterior sectionectomy | 4 (21.1) | 8 (38.1) | ||||
| Left lateral sectionectomy | 1 (5.3) | 1 (5.3) | ||||
| Left medial sectionectomy | 0 (0) | 1 (4.8) | ||||
| Partial hepatectomy | 6 (31.6) | 4 (19) | ||||
| 종양 마커(수술 전) | ||||||
| AFP, 평균 ng/mL | 929.9 ± 1595.8 | 198.1 ± 370.8 | 0.001 | |||
| PIVKA II, 평균 mAU/mL | 1988.9 ± 4676.2 | 649.8 ± 1510.7 | 0.052 | |||
| 평균 종양 크기, cm | 4.3 ± 2.3 | 3.6 ± 1.6 | 0.278 | |||
| 평균 종양의 수, n | 1 (100) | 1 (100) | ||||
| AJCC 병기, n (%) | 0.005 | |||||
| I기 | 13 (68.4) | 21 (100) | ||||
| II기 | 6 (31.6) | 0 (0) | ||||
| 미세혈관 침윤(+), n (%) | 6 (31.6) | 0 (0) | 0.005 | |||
| BCLC 병기, n (%) | 0.087 | |||||
| 0기 | 0 (0) | 3 (14.3) | ||||
| A기 | 19 (100) | 18 (85.7) | ||||
| 종양 재발 횟수, n (%) | 14 (73.7) | 10 (47.6) | 0.093 | |||
| HCC-관련 사망자 수, n (%) | 10 (52.6) | 4 (19) | 0.026 | |||
| I 기 N=34 (85%) | II 기 N=6 (15%) | p-value | ||
| 환자의 평균 연령, y, 범위 | 55.7 ± 6.6 | 49.8 ± 5.8 | 0.466 | |
| 성별 (남/여) | 25/9 | 6/0 | 0.152 | |
| 간 경변증, n (%) | 29 (85.3) | 6 (100) | 0.315 | |
| HBsAg (+), n (%) | 33 (97.1) | 6 (100) | 0.671 | |
| 평균 ICG R15, %, 범위 | 15.8 ± 5.5 | 16.3 ± 7.6 | 0.354 | |
| 수술명, n (%) | 0.215 | |||
| Right hepatectomy | 1 (2.9) | 2 (33.3) | ||
| Left hepatectomy | 2 (5.9) | 1 (16.7) | ||
| Right anterior sectionectomy | 8 (23.5) | 1 (16.7) | ||
| Right posterior sectionectomy | 11 (32.4) | 1 (16.7) | ||
| Left lateral sectionectomy | 2 (5.9) | 0 (0) | ||
| Left medial sectionectomy | 1 (2.9) | 0 (0) | ||
| Partial hepatectomy | 9 (26.5) | 1 (16.7) | ||
| 종양 마커(수술 전) | ||||
| AFP, 평균 ng/ml | 264.4 ± 539.8 | 2140 ± 2296.7 | 0.000 | |
| PIVKA II, 평균 mAU/mL | 687.9 ± 1512.3 | 4674 ± 7754.1 | 0.000 | |
| 평균 종양 크기, cm | 3.7 ± 1.5 | 4.9 ± 3.6 | 0.004 | |
| 평균 종양의 수, n | 1 (100) | 1 (100) | ||
| CRBN 발현, n (%) | 0.005 | |||
| 고발현 | 13 (38.2) | 6 (100) | ||
| 저발현 | 21 (61.8) | 0 (0) | ||
| BCLC 병기, n (%) | 0.449 | |||
| 0기 | 3 (8.8) | 0 (0) | ||
| A기 | 31 (91.2) | 6 (100) | ||
| 종양 재발 횟수, n (%) | 19 (55.9) | 5 (88.3) | 0.206 | |
| HCC-관련 사망자 수, n (%) | 11 (32.4) | 3 (50) | 0.403 | |
Claims (18)
- CRBN 유전자의 mRNA 또는 이로부터 발현되는 단백질의 수준을 측정하는 제제를 포함하는, 간세포암 진단 또는 예후 예측용 조성물.
- 제1항에 있어서, 상기 유전자의 mRNA 수준을 측정하는 제제는 상기 유전자에 특이적으로 결합하는 프라이머쌍, 프로브 또는 안티센스 뉴클레오티드를 포함하는, 간세포암 진단 또는 예후 예측용 조성물.
- 제1항에 있어서, 상기 단백질의 수준을 측정하는 제제는 상기 단백질에 특이적인 항체 또는 앱타머를 포함하는, 간세포암 진단 또는 예후 예측용 조성물.
- 제3항에 있어서, 상기 항체는 수탁번호 KCTC18596P의 하이브리도마 세포에 의해 생산되는 단일클론항체 및 수탁번호 KCTC18598P의 하이브리도마 세포주에 의해 생산되는 단일클론항체로 이루어진 군으로부터 선택되는 1종 이상의 단일클론항체를 포함하는, 간세포암 진단 또는 예후 예측용 조성물.
- 제1항 내지 제4항 중 어느 한 항의 조성물을 포함하는, 간세포암 진단 또는 예후 예측용 키트.
- 제5항에 있어서, 상기 키트는 RT-PCR 키트, 경쟁적 RT-PCR 키트, 실시간 RT-PCR 키트, DNA 칩 키트 또는 단백질 칩 키트인, 간세포암 진단 또는 예후 예측용 키트.
- (a) 개체로부터 분리된 생물학적 시료에서 CRBN 유전자의 mRNA 또는 이로부터 발현되는 단백질의 수준을 측정하는 단계; 및(b) 상기 측정된 수준을 정상 개체로부터 분리된 생물학적 시료에서 측정된 수준과 비교하는 단계;를 포함하는 간세포암 진단을 위한 정보제공방법.
- 제7항에 있어서, (c) 상기 (a) 단계의 생물학적 시료에서 측정된 mRNA 또는 이로부터 발현되는 단백질의 수준이 정상 개체 또는 상기 (a) 단계의 개체의 생물학적 시료로부터 분리된 생물학적 시료에서 측정된 것보다 높은 경우, 간세포암으로 판단하는 단계를 추가로 포함하는, 간세포암 진단을 위한 정보제공방법.
- (a) 간세포암 환자의 간세포암 조직과 이의 주변 정상 조직으로부터 분리된 생물학적 시료에서 각각 CRBN 유전자의 mRNA 또는 이로부터 발현되는 단백질의 수준을 측정하는 단계; 및(b) 상기 각 시료에서 측정된 수준을 비교하는 단계;를 포함하는 간세포암의 예후 예측을 위한 정보제공방법.
- 제9항에 있어서, (c) 상기 (a) 단계의 간세포암 조직으로부터 분리된 생물학적 시료에서 측정된 CRBN 유전자의 mRNA 또는 이로부터 발현되는 단백질의 수준이 주변 정상 조직으로부터 분리된 생물학적 시료에서 측정된 것보다 2배 이상 높은 경우 불량한 예후를 가지는 것으로 판단하는 단계를 추가로 포함하는, 간세포암의 예후 예측을 위한 정보제공방법.
- 제10항에 있어서, (d-1) 상기 (a) 단계의 간세포암 조직으로부터 분리된 생물학적 시료에서 측정된 CRBN 유전자의 mRNA 또는 이로부터 발현되는 단백질의 수준이 주변 정상 조직으로부터 분리된 생물학적 시료에서 측정된 것보다 2배 이상 높은 경우 CRBN 고발현 환자군으로 분류하고, 2배 미만인 경우 CRBN 저발현 환자군으로 분류하는 단계;(d-2) 고발현군 환자 및 저발현군 환자로부터 분리된 혈액에서 각각 AFP(α-fetoprotein) 수치를 측정하는 단계; 및(d-3) 고발현군 환자로부터 분리된 혈액에서 측정된 AFP 수치가 저발현군 환자로부터 분리된 혈액에서 측정된 수치보다 높은 경우 고발현군 환자군 환자가 불량한 예후를 가지는 것으로 판단하는 단계;를 추가로 포함하는, 간세포암의 예후 예측을 위한 정보제공방법.
- 제10항 또는 11항에 있어서, 상기 불량한 예후는 병기 II로의 진행, 미세혈관의 침윤, 누적 종양 재발율 증가 및 생존율 감소로 이루어진 군으로부터 선택되는 어느 하나 이상을 나타내는 것을 의미하는, 간세포암의 예후 예측을 위한 정보제공방법.
- 수탁번호 KCTC18596P의 하이브리도마 세포에 의해 생산되는, 세레브론 (CRBN)에 특이적으로 결합하는 단일클론항체.
- 제13항에 있어서, 상기 단일클론항체는 서열번호 3 및 서열번호 6으로 이루어진 군으로부터 선택되는 하나 이상의 아미노산 서열을 포함하는 세레브론의 영역에 특이적으로 결합하는, 단일클론항체.
- 수탁번호 KCTC18598P의 하이브리도마 세포에 의해 생산되는, 세레브론(CRBN)에 특이적으로 결합하는 단일클론항체.
- 제15항에 있어서, 상기 단일클론항체는 서열번호 3의 아미노산 서열을 포함하는 세레브론의 영역에 특이적으로 결합하는, 단일클론항체.
- 제13항의 단일클론항체를 생산하는 수탁번호 KCTC18596P의 하이브리도마 세포.
- 제15항의 단일클론항체를 생산하는 수탁번호 KCTC18598P의 하이브리도마 세포.
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| US17/441,386 US12461103B2 (en) | 2019-03-22 | 2020-03-23 | Biomarker cereblon for diagnosing hepatocellular carcinoma, and novel monoclonal antibody specific thereto |
| JP2021556490A JP7300687B2 (ja) | 2019-03-22 | 2020-03-23 | 肝細胞癌診断用バイオマーカーセレブロンと、これに特異的な新規なモノクローナル抗体 |
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Cited By (2)
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| CN113517023A (zh) * | 2021-05-18 | 2021-10-19 | 柳州市人民医院 | 与性别相关的肝癌预后标志性因素及其筛选方法 |
| CN114935651A (zh) * | 2022-04-27 | 2022-08-23 | 广州源康生物医药科技有限公司 | 一种肿瘤生物标志物及应用 |
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| CN113517023A (zh) * | 2021-05-18 | 2021-10-19 | 柳州市人民医院 | 与性别相关的肝癌预后标志性因素及其筛选方法 |
| CN114935651A (zh) * | 2022-04-27 | 2022-08-23 | 广州源康生物医药科技有限公司 | 一种肿瘤生物标志物及应用 |
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| US20220178929A1 (en) | 2022-06-09 |
| JP7300687B2 (ja) | 2023-06-30 |
| KR20200112753A (ko) | 2020-10-05 |
| US12461103B2 (en) | 2025-11-04 |
| JP2022526131A (ja) | 2022-05-23 |
| KR102429562B1 (ko) | 2022-08-05 |
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