WO2003085399A1 - Methode de determination d'une leucemie, d'une preleucemie ou d'une maladie sanguine maligne aleucemique, et methode diagnostique - Google Patents
Methode de determination d'une leucemie, d'une preleucemie ou d'une maladie sanguine maligne aleucemique, et methode diagnostique Download PDFInfo
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- WO2003085399A1 WO2003085399A1 PCT/JP2003/004531 JP0304531W WO03085399A1 WO 2003085399 A1 WO2003085399 A1 WO 2003085399A1 JP 0304531 W JP0304531 W JP 0304531W WO 03085399 A1 WO03085399 A1 WO 03085399A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- 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
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/22—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against growth factors ; against growth regulators
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- 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
- C12N5/16—Animal cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- 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
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/57407—Specifically defined cancers
- G01N33/57426—Specifically defined cancers leukemia
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/475—Assays involving growth factors
Definitions
- the present invention provides a method for determining leukemia, preleukemia or non-leukemic malignant blood disease, comprising measuring hematopoietic stem cell growth factor (SCGF).
- SCGF hematopoietic stem cell growth factor
- hematopoietic stem cell growth factor (SCGF) -reactive antibody as an active ingredient
- SCGF hematopoietic stem cell growth factor
- Diagnosis of leukemia, preleukemia and non-leukemic malignancy, or post-treatment diagnosis of leukemia, preleukemia and non-leukemia malignancy may be used to treat leukemia, preleukemia and non-leukemia malignancy. It is important in deciding a policy.
- the first diagnosis of leukemia is to measure the number of leukocytes in the patient's peripheral blood, and to suspect leukemia if the measured value exceeds the normal value.
- diseases other than leukemia such as a cold
- the normal value of the white blood cell count in peripheral blood is as wide as 4,000 to 8,000 // XL, and there is a possibility of false negative. So, more accurate There is a need for a highly diagnostic method for leukemia.
- One of the treatment methods for the above-mentioned leukemia, pre-leukemia, non-leukemic malignant blood disease, congenital metabolic disease, solid cancer and the like includes hematopoietic stem cell transplantation therapy.
- Problems of hematopoietic stem cell transplantation therapy include HLA type mismatch between the donor's hematopoietic stem cells and the patient's hematopoietic stem cells, and the transplanted hematopoietic stem cells do not survive due to the patient's physical condition or infection, etc.
- the effects of hematopoietic stem cell transplantation therapy are not sufficiently obtained, such as delayed stem cell engraftment and the development of graft-versus-host reaction disease (hereinafter referred to as GVHD). May be taken.
- GVHD graft-versus-host reaction disease
- G-CSF can be administered to a living body to promote engraftment of hematopoietic stem cells.
- rejection of the provided hematopoietic stem cells can be suppressed by administering an immunosuppressant to the living body.
- any of the drugs is administered in excess, side effects may be a concern. Therefore, diagnosing or predicting the status of hematopoietic stem cell engraftment and the onset of GVHD is important in determining treatment strategies.
- the method of confirming hematopoietic stem cell engraftment after hematopoietic stem cell transplantation is to measure the number of leukocytes and platelets in peripheral blood, and if those measured values increase, it is possible to diagnose that hematopoietic stem cells have engrafted. it can.
- engraftment of hematopoietic stem cells may require 10 days to one month or more after transplantation, so that the determination of hematopoietic stem cell engraftment can be determined early by measuring the number of leukocytes and platelets in peripheral blood. Can not do.
- a method for determining the onset of GVHD includes observing skin rashes and the like that appear during the first phase of recovery after hematopoietic stem cell transplantation.
- determining the onset of GVHD includes observing skin rashes and the like that appear during the first phase of recovery after hematopoietic stem cell transplantation.
- there is no known simple and accurate method for determining the onset of GVHD includes observing skin rashes and the like that appear during the first phase of recovery after hematopoietic stem cell transplantation.
- there is no known simple and accurate method for determining the onset of GVHD includes observing skin rashes and the like that appear during the first phase of recovery after hematopoietic stem cell transplantation.
- predicting the onset of GVHD before the onset of GVHD.
- SCGF Human hematopoietic stem cell growth factor
- Antibodies that recognize SCGF include SCGF obtained by genetic recombination, and polyclonal antibodies and cells prepared using immunoglobulins from the 6th to 25th residues from the N-terminus of SCGF. Monoclonal antibodies prepared using SCGF partially purified from the culture supernatant or SCGF obtained by genetic recombination as an immunogen are known [WO98 / 08859].
- the monoclonal antibody has a neutralizing activity
- SCGF obtained by the genetic recombination method reacts with SCGF obtained by the genetic recombination method in ELISA
- SCGF obtained by genetic recombination can be detected by Western blotting using a polyclonal antibody prepared using a partial peptide from residues 6 to 25 from the N-terminus as an immunogen. It has been reported.
- SCGF gene expression was high in the kidney and low in the heart, and no expression was found in the brain, placenta, lung, liver, skeletal muscle, and kidney [Proc. Natl. Acad. Sci. USA, 94, 7577 (1997)], abundant in spleen, thymus, cecum, bone marrow, fetal liver, and low in peripheral blood [Biochem. Biophys. Res. Comm., 249, 124 (1998)].
- SCGF is expressed in bone marrow, proliferating cartilage, and periosteum as a result of in situ hybridization in normal neonatal mice [The Hematology Journal, 2, 307 (2001)] ].
- SCGF gene expression was observed in bone marrow cell lines (HT60, KPB-M15), mononuclear cell lines ( ⁇ ⁇ 1, U_937), erythroid cell lines (HEL), and fibroblast cell lines (NHF).
- B cell line U266B1, IM-9
- T cell line MOLT-4
- erythroid cell line K562
- epithelial cancer cell line HeLaS3, A431
- melanoma cell line Boes;
- SCGF protein As described above, the existence, function, and disease-related relationship of SCGF protein in body fluids and tissues such as serum and plasma of animals including humans has not been clarified.
- An object of the present invention is to determine leukemia, proleukemia or non-leukemic malignant blood disease, distinguish leukemia from preleukemia or non-leukemic malignant blood disease, distinguish aplastic anemia from myelodysplastic syndrome, and obtain hematopoietic stem cells.
- the present invention relates to the following (1) to (20).
- a method for determining leukemia, preleukemia or non-leukemic malignant blood disease which comprises measuring hematopoietic stem cell growth factor (SCGF) in a biological sample.
- SCGF hematopoietic stem cell growth factor
- a method for distinguishing leukemia from pre-leukemia or non-leukemic malignant blood disease comprising measuring hematopoietic stem cell growth factor (SCGF) in a biological sample.
- SCGF hematopoietic stem cell growth factor
- a method for distinguishing between aplastic anemia and myelodysplastic syndrome which comprises measuring hematopoietic stem cell growth factor (SCGF) in a biological sample.
- SCGF hematopoietic stem cell growth factor
- a method for determining hematopoietic stem cell engraftment status after hematopoietic stem cell transplantation comprising measuring hematopoietic stem cell growth factor (SCGF) in a biological sample.
- SCGF hematopoietic stem cell growth factor
- a method for determining graft-versus-host reaction disease comprising quantifying hematopoietic stem cell growth factor (SCGF) in a biological sample.
- SCGF hematopoietic stem cell growth factor
- the antibody is an antibody selected from a polyclonal antibody and a monoclonal antibody.
- Monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 6 to 28 of SEQ ID NO: 1, and recognizes the region represented by the amino acid sequence at positions 29 to 59 (9) The method according to (9) above, wherein the monoclonal antibody is selected from the group consisting of a monoclonal antibody that recognizes and a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 60 to 302.
- a diagnostic agent for leukemia, pre-leukemia or non-leukemic malignant blood disease comprising an antibody reactive with hematopoietic stem cell growth factor (SCGF) as an active ingredient.
- SCGF hematopoietic stem cell growth factor
- a diagnostic agent for graft-versus-host reaction disease comprising an antibody reactive with hematopoietic stem cell growth factor (SCGF) as an active ingredient.
- SCGF hematopoietic stem cell growth factor
- Monoclonal monoclonal antibody that recognizes the region indicated by the amino acid sequence at positions 6 to 28 of SEQ ID NO: 1; amino acid sequence at positions 29 to 59
- the monoclonal antibody according to the above (14) which is a monoclonal antibody selected from the group consisting of a monoclonal antibody recognizing the indicated region and a monoclonal antibody recognizing the region indicated by the 60th to 302nd amino acid sequences. Diagnostics.
- Leukemia pre-leukemia or non-leukemic malignant blood disease, hematopoietic stem cell engraftment after hematopoietic stem cell transplantation, or graft-versus-host reaction disease, including antibodies that react with hematopoietic stem cell growth factor (SCGF) Diagnostic kit.
- SCGF hematopoietic stem cell growth factor
- a monoclonal antibody which recognizes the region represented by the amino acid sequence at positions 29 to 59 of SEQ ID NO: 1.
- FIG. 1 is a diagram showing the reactivity of a monoclonal antibody to a human SCGF partial peptide (compound 1) (binding ELISA) o
- FIG. 2 shows the results of SDS-PAGE and Western blotting of purified human SCGF protein.
- Lanes 1 and 2 show molecular weight markers and SDS-PAGE analysis of purified human SCGF protein.
- Lanes 3, 4, and 5 show the results of Western blotting of purified human SCGF protein using KM2142, KM2804, and KM2945, respectively.
- FIG. 3 shows the reactivity of the monoclonal antibody to human SCGF protein expressed in CHO cells (binding ELISA).
- FIG. 4 shows the reactivity of the monoclonal antibody to SDS-denatured human SCGF protein (CH ⁇ cell expression) (binding ELISA).
- FIG. 5 shows the reactivity of the monoclonal antibody to human and mouse SCGF protein (C HO cell expression).
- FIG. 6 is a view showing a quantification curve of human SCGF protein by sandwich ELISA using a monoclonal antibody.
- FIG. 7 shows SCGF concentrations in serum of patients with various blood diseases.
- the horizontal solid line shows the median value of various blood disease groups, and the horizontal dotted line shows the cut-off value (18.2 ng / mL) obtained from the healthy subject group.
- FIG. 8 is a graph showing the difference between the onset and non-onset of GVHD depending on the SCGF concentration in the serum of a hematopoietic stem cell transplant patient.
- the horizontal solid line shows the median value of each group.
- FIG. 9 is a graph showing the relationship between the SCGF concentration in the serum of a hematopoietic stem cell transplant patient and the detection sensitivity of a patient with GVHD and the specificity of a non-patient.
- Parable Sensitivity
- ⁇ Specificity
- Vertical dotted lines indicate provisional cutoff values.
- FIG. 10 is a graph showing the difference between engraftment delay and non-delay depending on the SCGF concentration in the serum of a hematopoietic stem cell transplant patient.
- the horizontal solid line shows the median value of each group.
- FIG. 11 is a graph showing the relationship between the SCGF concentration in the serum of a hematopoietic stem cell transplant patient and the detection sensitivity of hematopoietic stem cell engraftment delayed cases and the specificity of non-delayed cases.
- the present invention relates to a method for determining leukemia, preleukemia or non-leukemic malignant blood disease.
- Leukemia includes any type of hematopoietic cells such as hematopoietic cells or other immature cells that have become tumors.Acute lymphocytic leukemia
- ALL acute myeloid leukemia
- AML acute myeloid leukemia
- CML chronic myeloid leukemia
- Pre-leukemia includes any type of hematopoietic cells in which mature cells, such as lymphocytes, have become tumors. Examples include myelodysplastic syndromes (hereinafter referred to as MDS). Can be
- Non-leukemic malignant blood diseases include lymphoma and myeloma.
- Lymphomas include Hodgkin's lymphoma and non-Hodgkin's lymphoma (hereinafter referred to as NHL).
- Myeloma includes multiple myeloma (hereinafter referred to as MM).
- SCGF concentrations in biological samples of patients with leukemia, preleukemia and non-leukemic malignant hematological diseases are significantly higher than SCGF concentrations in biological samples of healthy individuals. Therefore, a cut-off value is set for the SCGF concentration, SCGF in the collected biological sample is quantified, and if the SCGF concentration is higher than the cut-off value, leukemia, pre-leukemia, or non-leukemic malignant hematologic disease is determined. Can be determined.
- the cutoff value is a value determined when a target disease group and a non-disease group are determined by focusing on a certain substance.
- the cutoff value is a value determined when a target disease group and a non-disease group are determined by focusing on a certain substance.
- the target disease or non-disease if it is below the cutoff value, it is negative, if it is above the cutoff value, it is positive, or if it is below the cutoff value, it is positive, if it is above the cutoff value. If the disease is judged to be negative, the disease can be determined (Masami Kanai, edited by Clinical Laboratory Methods, Kanbara Publishing Co., Ltd.).
- Indices used to evaluate the clinical usefulness of the power-off value include sensitivity and specificity.
- a certain population was judged using the cutoff value, and among the sick patients, a (true positive) was determined to be positive, and b (false negative) was determined to be a sick patient and judged negative. ), C (false positive) when the judgment is positive despite not being a diseased patient, and d (true negative) when the judgment is negative without the diseased patient, a / (a The value expressed by + b) can be expressed as sensitivity (true positive rate), and the value expressed by ⁇ / (c + d) can be expressed as specificity (true negative rate).
- the distribution of measured values between the target disease group and the non-disease group usually partially overlaps. Therefore, increasing or decreasing the cutoff value changes sensitivity and specificity. Lowering the cutoff value increases sensitivity, but decreases specificity. Increasing the cutoff value decreases sensitivity but increases specificity. As a judgment method, it is preferable that both the sensitivity and the specificity have high values. In addition, a judgment method in which the values of sensitivity and specificity do not exceed 50% is not considered useful.
- the cut-off value can be set by setting the cut-off value at either end from the center, including 95% of the distribution of the non-diseased group, or by setting the normal distribution to the non-diseased group. If indicated, mean + 2 times standard deviation (SD) Alternatively, there is a method of setting an average value of 1 2 SD as a cutoff value.
- a sensitivity of 89.5% and a specificity of 70% can be used when the power-off value is set to 15.0 ng / mL. If the cut-off value is set to 13.0 ng / mL, it can be determined based on 100% sensitivity and 60% specificity. If the cut-off value is set to the average value + 18.2 ng / mL of 2 SD based on the SCGF concentration of a healthy person, it can be determined with a sensitivity of 89.5% and a specificity of 100%. The cut-off value was 95% sensitivity and 100% specificity for leukemia and 76.9% sensitivity and 100% specificity for non-leukemic malignant blood disease. Can be determined based on 100% sensitivity and 100% specificity.
- the biological sample may be any such as blood, urine, cerebrospinal fluid, and puncture fluid, but preferably blood.
- blood examples include whole blood, plasma, serum, hemolyzed blood, and intracellular fluid, and preferably serum or plasma.
- the present invention relates to a method for distinguishing leukemia from pre-leukemia or non-leukemic malignant blood disease.
- the SCGF concentration in the biological sample of leukemia patients is significantly higher than the SCGF concentration in the biological sample of patients with pre-leukemia or non-leukemic malignant blood. Therefore, after a leukemia, pre-leukemia, or non-leukemic malignant hematological disease is determined by the above-described method, a cutoff value is further determined for determining leukemia, and the SCGF concentration in the collected biological sample is reduced to the cutoff value. If the value is higher than this value, it can be determined that the disease is leukemia, and if the value is lower, it can be determined that the disease is pre-leukemia or non-leukemic malignant blood disease.
- the cut-off value When distinguishing leukemia from pre-leukemia or non-leukemic malignant blood disease, When the cut-off value is set at 23.8 ng / mL, the sensitivity can be determined with 85% sensitivity and 69.2% specificity. When the cut-off value is set to 32.8 ng / mL from the mean of non-leukemic malignant blood disease patients + 2 SD, the sensitivity is 80 ° /. Can be determined based on the specificity of 100%.
- the present invention relates to a method for distinguishing aplastic anemia from myelodysplastic syndrome.
- Aplastic anemia and myelodysplastic syndrome are conditions characterized by abnormalities in the number and morphology of leukocytes in bone marrow and peripheral blood, and it has been difficult to distinguish between the two diseases.
- SCGF levels in patients with myelodysplastic syndrome are significantly higher than SCGF levels in the blood of healthy individuals, but SCGF levels in blood of patients with aplastic anemia remain the same as in healthy individuals.
- the SCGF concentration in the blood of patients with myelodysplastic syndrome is significantly higher than the SCGF concentration in the blood of patients with aplastic anemia, and by measuring the SCGF concentration in both blood, it is possible to distinguish between aplastic anemia and myelodysplastic syndrome can do.
- a patient with aplastic anemia and a patient with myelodysplastic syndrome can be distinguished by 100% sensitivity and 100% specificity.
- the reference value is set to 15.6 ng / mL or more: L8.6 ng / mL, patients with aplastic anemia and patients with myelodysplastic syndrome can be distinguished by 100% sensitivity and 100% specificity.
- the present invention also relates to a method for determining a delay in hematopoietic stem cell engraftment after hematopoietic stem cell transplantation.
- hematopoietic stem cell transplantation Any method of hematopoietic stem cell transplantation may be used as long as hematopoietic stem cells are transplanted. Examples include bone marrow transplantation, umbilical cord blood transplantation, and peripheral blood stem cell transplantation. Can be
- the period from hematopoietic stem cell transplantation to hematopoietic stem cell engraftment is classified into the following four periods based on the peripheral blood count of the patient.
- a preconditioning period in which a large amount of an anticancer agent or the like is administered an abrastic period in which the blood cell count has decreased after transplantation, and a recovery condition in which the blood cell count has recovered after transplantation.
- a stable phase in which hematopoietic stem cells engraft after transplantation is classified into the following four periods based on the peripheral blood count of the patient.
- the SCGF concentration in the biological sample during the preconditioning period and the plastic stage of the patient who underwent hematopoietic stem cell transplantation was higher than the SCGF concentration in the biological sample of the patient with delayed hematopoietic stem cell engraftment. Is higher than SCGF concentration in biological samples of patients who do not delay engraftment. Therefore, the SCGF concentration at each stage is measured, and the SCGF concentration at which the engraftment of hematopoietic stem cells is judged to be delayed is determined as the power cut-off value, and the SCGF concentration is lower than the power cut-off value. No delay in engraftment was observed, and it can be determined that engraftment delay occurs when the SCGF concentration is higher than the cutoff value.
- a cut-off value of 9.5 ng / mL is set to a sensitivity of 75% and a specificity of 67%.
- the to-off value is 12 ng / mL, it can be determined with a sensitivity of 75% and a specificity of 63%.
- the present invention relates to a method for determining the onset of GVHD.
- SCGF levels in biological samples during the plastic and recovery phases of patients undergoing hematopoietic stem cell transplantation are higher in patients with GVHD than in those without GVHD. Therefore, SCGF concentration is measured at each stage, and GVHD may develop at each stage. If the SCGF concentration is lower than the power-off value, there is no risk of developing GVHD, but if the SCGF concentration is higher than the power-off value, It can be determined that GVHD may occur.
- the cutoff value is set to, for example, 5 ng / mL, with a sensitivity of 87% and a specificity of 57%. If the cut-off value is set to, for example, 10 ng / mL, the sensitivity is 87% and the specificity is 63%, and in the recovery phase, if the cut-off value is set to, for example, 15 ng / mL, the sensitivity is 87% and the specificity is 63%.
- a non-onset patient can be determined.
- SCGF hematopoietic stem cell growth factor
- Immunological assays include antigen-antibody reactions such as the immunoassay method, the immunoblotting method, the agglutination reaction, the complement fixation reaction, the hemolysis reaction, the sedimentation reaction, the gold colloid method, the chromatographic method, and the immunostaining method. Any method may be included as long as it utilizes the method, but preferably the Imnoassy method is used.
- Examples of the molecular biological measurement method include an RT-PCR method, a Northern blotting method, an in situ hybridization method, and the like.
- the immunoassay method is a method for detecting or quantifying an antibody or an antigen using variously labeled antigens or antibodies.
- the radioimmunoassay RIA
- EIA or ELISA enzyme immunodetection Methods
- FIA fluorescent immunodetection
- luminescent immunoassay luminescent immunoassay
- TIA cytochemical detection
- LAPIA LAPIA
- PCIA flow cytometry
- radiolabel used in the radioimmunoassay any known radioisotope (enzyme immunoassay, edited by Eiji Ishikawa et al, Enzyme Immunoassay) can be used.
- enzyme immunoassay edited by Eiji Ishikawa et al, Enzyme Immunoassay
- 32p, 125 L 1311 and the like can be used.
- any known enzyme enzyme immunoassay, edited by Eiji Ishikawa et al., Medical Shoin
- enzyme immunoassay edited by Eiji Ishikawa et al., Medical Shoin
- alkaline phosphatase peroxidase
- luciferase and the like can be used.
- enzyme immunoassay measures and detects substances produced by the action of enzymes.
- the method of measuring the absorbance of a substance having an absorption maximum in the ultraviolet or visible region measures the generated fluorescent substance
- a variety of measurement methods can be used, such as a method of measuring fluorescence intensity and a method of measuring emission intensity of generated substances.
- a substrate of the alkaline phosphatase which generates a substance having an absorption maximum in the ultraviolet or visible part by the action of an alkaline phosphatase may be used.
- 4-nitrophenyl phosphoric acid and the like can be mentioned.
- 4-12-Trophenyl phosphate is converted to 4-nitrophenol by alkaline phosphatase.
- the substrate of the lipophosphatase which generates luminescence by the action of lipophosphatase include, for example, 3- (2′-spiroadamantane) —4-methoxy-4- (3′—phosphoryloxine) phene.
- Disodium salt (CD P-Stra TM ), 3- ⁇ 4- methoxyspiro [1, 2, _ dioxen-1, 3, 2, 1 (5, - black port) Bok Rishikuro [3. 3. I 3 '7] decane] - 4 Iru ⁇ phenylene Lephosphate 'disodium salt (CSPD TM ), [10-methyl-9 (10H) -acridinylidene] phenoxymethylphosphate' ninatridium salt (Lumigen TM APS-5), etc. Is mentioned.
- Amp1iQ manufactured by Dako
- NAD PH NAD PH
- any known luminescent substance [Bioluminescence and Chemiluminescence, edited by Kazuhiro Imai, Hirokawa Shoten; Clinical Laboratory 42 (1998)] can be used.
- acridinium ester, mouth fins and the like can be used.
- any known fluorescence by Akira Kawao, fluorescent antibody method, manufactured by Soft Science
- FITC FITC
- RITC RITC
- Examples of the measurement method in the Imnoassay method include a competitive method and a sandwich method [Immunologically Irradiated 5th Edition (Nankodo)] and the like, and preferably a sandwich method.
- the target substance in the sample and the first antibody, which are bound in the antigen-antibody reaction are reacted with the second antibody (secondary antibody) simultaneously or separately, and the target substances in the sample are separated into the same or different substances.
- second antibody second antibody
- the second antibody (secondary antibody) is added to the complex of the target substance and the first antibody in the sample bound by the antigen-antibody reaction. After reacting and washing away components such as secondary antibodies that did not participate in the reaction in the measurement system, the target substance in the sample present in the reaction system was detected or detected. Is a method of quantification.
- Examples of the solid phase used in the sandwich method include a polyvinyl chloride microplate and a polystyrene microplate.
- any of a polyclonal antibody and a monoclonal antibody may be used, and antibody fragments such as Fab, Fab ', and F (ab) 2 may be used.
- the combination of the primary antibody and the secondary antibody used in the sandwich method may be any combination of antibodies recognizing different epitopes, but it is preferable that at least one is a monoclonal antibody.
- the monoclonal antibody used in the sandwich method of the present invention include: a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 6 to 28 of SEQ ID NO: 1, an amino acid sequence at positions 29 to 59 of SEQ ID NO: 1 And a monoclonal antibody recognizing the region shown by the 60th to 302nd amino acid sequence of SEQ ID NO: 1.
- the monoclonal antibody recognizing the region represented by the amino acid sequence at positions 6 to 28 of SEQ ID NO: 1 is a monoclonal antibody produced by Hybridoma KM2142 [The Hematology Journal, 2, 307 (2001)]. KM2142.
- a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 29 to 59 in SEQ ID NO: 1 includes the monoclonal antibody KM2804 produced by Hypridoma KM2804.
- Monoclonal antibodies that recognize the region represented by the amino acid sequence at positions 60 to 30 in SEQ ID NO: 1 include monoclonal antibody KM2945 produced by hybridoma KM2945.
- Hybridoma KM2142 that produces monoclonal antibody KM2142, Hybridoma KM2804, which produces the noclonal antibody KM2804, and Hypri-Doma KM2945, which produces the monoclonal antibody KM2945, were obtained from the National Institute of Advanced Industrial Science and Technology (AIST) on February 26, 2002 (Ibaraki FERM BP-7922, FERM BP-7923, and FERM BP-7924 have been deposited at Tsukuba East 1-chome, 1-chome, Chuo No. 6), respectively. These monoclonal antibodies have different sites for recognizing SCGF. The sandwich method can be performed by combining these monoclonal antibodies.
- a preferred combination of monoclonal antibodies is a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 6 to 28 of SEQ ID NO: 1, specifically, hybridoma KM2142 [The Hematology Journal, 2, 307]. (2001)] and a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 29 to 59 in SEQ ID NO: 1, specifically, hybridoma KM2804 (FERM BP-7923). Combination with the monoclonal antibody KM2804 produced by the company.
- the above-mentioned anti-SCGF antibody (primary antibody) is adsorbed and immobilized on the surface of a suitable immobilization carrier.
- a suitable immobilization carrier for immobilization of the primary antibody, for example, the antibody is diluted in an appropriate buffer, for example, a phosphate buffer, a borate buffer, a carbonate buffer, etc.
- the reaction can be carried out at 37 ° C for 30 minutes or more.
- the protein binding ability on the surface of the immobilized carrier is blocked.
- the free binding groups on the surface of the immobilization carrier are contacted with a blocking buffer.
- blocking buffer for example, a buffer containing 1 to 10% of serum albumin and 10 to 30% of Block Ace (manufactured by Snow Brand Milk Products), for example, Phosphate buffer, borate buffer, carbonate buffer and the like.
- the blocking treatment can be performed by reacting at 4 to 37 ° C for 30 minutes or more.
- the biological sample may be diluted with a buffer, a phosphate buffer, a borate buffer, a carbonate buffer or the like containing a protein such as, for example, 0.01 to 1% of serum albumin, if necessary.
- the contact between the primary antibody and the biological sample can be performed by reacting at 4 to 37 ° C for 30 minutes or more.
- buffer solution containing a surfactant such as T Wee n20 optionally, for example, phosphate buffer, borate buffer, washed several times with carbonate buffer and the like.
- the SCGF present in the biological sample specifically binds to the previously immobilized anti-SCGF antibody, thereby being immobilized on the immobilization carrier via the anti-SCGF antibody.
- the SCGF-immobilized carrier is brought into contact with a solution containing a secondary antibody.
- the secondary antibody may be any anti-SCGF antibody having a different epitope from the primary antibody.
- the secondary antibody can be labeled in advance with the above-mentioned label if necessary.
- the carrier may be washed several times using a buffer containing a surfactant such as Tween20, if necessary, such as a phosphate buffer, a borate buffer, or a carbonate buffer. Wash.
- a surfactant such as Tween20
- the secondary antibody binds to the immobilized carrier via the previously bound primary antibody and SCGF, and the amount of the secondary antibody reflects the amount of SCGF in the biological sample.
- the secondary antibody immobilized as described above can be measured according to the label of the secondary antibody.
- use a tertiary antibody specific to the secondary antibody can be labeled by various methods, and the label of the tertiary antibody can be detected or measured.
- the amount of the bound secondary antibody is measured, a calibration curve is prepared using a standard substance, and the amount of SCGF in the biological sample can be measured.
- the calibration curve can be obtained by preparing a solution containing human SCGF protein having a known concentration as a standard substance, prepared by serially diluting the solution at several points, and performing the above-described sandwich method together with the biological sample.
- Antibodies to SCGF contained in the diagnostic agent for leukemia, preleukemia or non-leukemic malignant hematologic disease of the present invention a diagnostic agent for delaying hematopoietic stem cell engraftment after hematopoietic stem cell transplantation, and a diagnostic agent for GVHD onset, Any antibody that reacts with SCGF may be used, such as a polyclonal antibody, a monoclonal antibody, or an antibody fragment, but a monoclonal antibody is preferably used.
- Monoclonal antibodies include a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 6 to 28 of SEQ ID NO: 1, and a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 29 to 59 of SEQ ID NO: 1. Antibodies and monoclonal antibodies that recognize the region represented by the amino acid sequence at positions 60 to 302 of SEQ ID NO: 1 are exemplified.
- the kit of the present invention is composed of a combination of instruments or reagents. If a kit contains essentially the same or substantially the same as a part of each component described below, Even if the configuration or form is different, it is included in the kit of the present invention.
- Reagents include antibodies that react with SCGF.If necessary, diluent of biological sample, antibody-immobilized solid phase, reaction buffer, washing solution, labeled secondary antibody or its antibody fragment, or labeled substance It also includes detection reagents and standard substances such as SCGF.
- diluent for the biological sample examples include an aqueous solution containing a protein such as BSA or casein in a surfactant or a buffer.
- the antibody-immobilized solid phase a material obtained by immobilizing the fantai or the antibody fragment of the present invention on a material obtained by shaping various polymer materials to suit the intended use is used. Tubes, beads, plates, fine particles such as latex, sticky materials, etc. are used as shapes, and materials are polystyrene, polycarbonate, polyvinyl toluene, polypropylene, polyethylene, polyvinyl chloride, nylon, and polymethacrylate. , Gelatin, agarose, cellulose, polymer materials such as polyethylene terephthalate, glass, ceramics and metals.
- the antibody can be prepared by a known method such as a physical method and a chemical method, or a combination thereof, for immobilizing the antibody. For example, a polystyrene 96-well immunoassay microphone plate with a hydrophobic solid phase of an antibody or the like may be mentioned.
- the reaction buffer may be any as long as it provides a solvent environment for the binding reaction between the antibody in the antibody-immobilized solid phase and the antigen in the biological sample.
- Surfactant, buffer, BSA And protein such as casein, preservatives, stabilizers, reaction accelerators and the like.
- Examples of the washing solution include tris phosphate (trishydroxymethylaminomethane), buffers such as a kind of good buffer such as HEPES and M0PS, etc., Tween 20, Tween 40, Tween 60, and Tween. 8 0,
- Detergents such as Triton X-705, salts such as NaC1, KC1 and ammonium sulfate, proteins such as BSA and casein, preservatives such as sodium azide, guanidine hydrochloride, urea sodium Examples include a liquid containing at least one of a denaturant such as dodecyl sulfate and a stabilizer such as polyethylene glycol, carboxymethyl cellulose, dextran sulfate, and chondroitin sulfate.
- a denaturant such as dodecyl sulfate
- a stabilizer such as polyethylene glycol, carboxymethyl cellulose, dextran sulfate, and chondroitin sulfate.
- Labeled secondary antibodies or antibody fragments thereof include, for example, horseradish peroxidase (HRP), horseradish peroxidase, and i3-galactosidase in the antibody or antibody fragment of the present invention.
- HRP horseradish peroxidase
- i3-galactosidase in the antibody or antibody fragment of the present invention.
- Labeled enzymes for labeling such as, a buffer, a mixture of proteins such as BSA and casein, and preservatives are used.
- the detection reagent for the labeled substance is a substrate for absorption measurement such as tetramethylbenzidine or orthophenylenediamine, or hydroxyphenylhydrazine.
- a fluorescent substrate such as hydroxyphenylpropionate / hydroxyphenylacetic acid or a luminescent substrate such as luminol is alkaline phosphatase
- a substrate for measuring absorbance such as 4-nitrophenylphosphate, 4-methylbenverifyryl Fluorescent substrates such as phosphors and the like can be mentioned.
- the standard substance include SCGF which can be prepared by the method described in WO98 / 08869, peptides containing two types of antibodies used in kits, such as peptides.
- the present invention also provides a monoclonal antibody recognizing the region represented by the amino acid sequence at positions 29 to 59 in SEQ ID NO: 1 and the amino acid sequence at position 60 to 302 described in SEQ ID NO: 1. It relates to a monoclonal antibody that recognizes a region.
- a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 29 to 59 in SEQ ID NO: 1 there is a monoclonal antibody KM2804 produced by hybridoma KM2804 (FERM BP-7923).
- a monoclonal antibody that recognizes the region represented by the amino acid sequence at positions 60 to 30 in SEQ ID NO: 1 there is a monoclonal antibody KM2945 produced by hybridoma KM2945 (FERM BP-7924).
- the monoclonal antibody used in the present invention it can be produced by a known method for producing a monoclonal antibody.
- the antigen includes a human SCGF protein obtained by introducing an expression vector containing a cDNA encoding human SCGF into E. coli, yeast, insect cells, animal cells, etc., and a human SCGF partial sequence obtained by peptide synthesis. Synthetic peptides are examples.
- a protein partial sequence of about 5 to 30 residues is selected.
- a partial sequence present on the surface of the protein in a three-dimensional structure is there.
- the ⁇ -terminal and C-terminal of the protein are often present on the protein surface.
- information on the secondary structure of proteins can also be referred to.
- a portion having a turn structure or a random coil structure Can be considered suitable as antigen peptides.
- the partial peptide thus selected does not always serve as an antigen for establishing the desired antibody.
- a partial cysteine is added to the end of the partial peptide to crosslink with the protein.
- the N-terminal of the peptide is acetylated and the C-terminal is amidated as necessary.
- Partial peptides can be synthesized by general liquid-phase and solid-phase peptide synthesis methods and methods of appropriately combining them, or a method analogous thereto [International Journal of Peptide Enr. Floors 'Residenta (International Journal of Peptide Protein Research), 35, 161-214 (1990), Solid-Phase Peptide Synthesis J, Methods' in. Enzymology I Vol. 289 (Methods in Enzymology, vol. 289), edited by Gregg B. Fields, Academic Press, (1997), "Applied Synthesis Protocol”. (Peptide Synthesis Protocols) ", Method'in'Molecular'biology 1 Volume 35 (Methods in Molecular Biology, vol. 35), edited by Michael W. Pennington, Ben M. Dunn, edited by Humana Press ), (1994)].
- an automatic peptide synthesizer can be used. Peptide synthesis by the peptide synthesizer is performed on a peptide synthesizer manufactured by Shimadzu Corporation, a peptide synthesizer manufactured by Advanced 'ChemTech In (USA, hereinafter abbreviated as ACT), or a commercially available peptide synthesizer. It can be carried out according to the respective synthesis programs, using N «-Fmoc-amino acid or No; -Boc-amino acid or the like having an appropriately protected side chain.
- Protected amino acids and carrier resins used as raw materials are manufactured by ABI, Shimadzu, Kokusan Chemical Co., Ltd., NovaBiochem Co., Ltd., Watanabe Chemical Co., Ltd., ACT, AnaSpec Inc., or It can be obtained from Peptide Research Institute, etc.
- Immunization is achieved by administering the antigen subcutaneously, intravenously, or intraperitoneally to the animal with an appropriate adjuvant (eg, complete freund's adjuvant, aluminum hydroxide gel and pertussis vaccine, etc.).
- an appropriate adjuvant eg, complete freund's adjuvant, aluminum hydroxide gel and pertussis vaccine, etc.
- a conjugate is prepared with a carrier protein such as BSA (pserum albumin) or KLH (Keyhole Limpet Hemocyanin) and used as an immunogen.
- the administration of the antigen is performed 3 to 10 times every 1 to 2 weeks after the first administration.
- Blood is collected from the fundus venous plexus 3 to 7 days after each administration, and the serum reacts with the antigen Is examined by enzyme immunoassay [Antibodies-A Laboratory Manual, Cold Spring Harbor Laboratory, 1988].
- a mouse, rat, or hamster whose serum shows a sufficient antibody titer against the antigen used for immunization is provided as a source of antibody-producing cells.
- spleens are excised from immunized mice, rats or hamsters 3 to 7 days after the final administration of the antigenic substance, and splenocytes are collected.
- the spleen is shredded in a MEM medium (manufactured by Nissui Pharmaceutical Co., Ltd.), loosened with forceps, centrifuged (1, 200 rpm, 5 minutes), the supernatant is discarded, and tris-ammonium chloride buffer (pH 7.65) is added. Treat for ⁇ 2 minutes to remove red blood cells, wash three times with MEM medium and provide as fusion splenocytes.
- myeloma cells cell lines obtained from mice are used.
- myeloma cell line P3-X63Ag8-Ul (P3-Ul) [Current Topics in Microbiology and Immunology, 18: 1-7 (1978)]
- P3-NSl / l -Ag41 (NS-l) [European J. Immunology, 6: 511-519 (1976)]
- SP2 / 0-Agl4 (SP-2) [Nature, 276: 269-270 (1978)]
- P3-X63 ' Ag8653 (653) J.
- a medium supplemented with fetal calf serum (FCS) (hereinafter referred to as a normal medium) and a medium supplemented with 8-azaguanine (15 g / mL)], but normal 3 to 4 days before cell fusion
- FCS fetal calf serum
- 8-azaguanine 15 g / mL
- the antigen or cells expressing the antigen are coated on a 96-well plate, and the hybridoma culture supernatant or the purified antibody obtained by the above method is reacted as the primary antibody.
- the second antibody is an antibody obtained by labeling an antibody capable of recognizing the immunoglobulin of the first antibody with biotin, an enzyme, a chemiluminescent substance, a radiation compound, or the like. Specifically, if a mouse is used for preparing the hybridoma, an antibody capable of recognizing mouse immunoglobulin is used as the second antibody. After the reaction, a reaction according to the substance labeled with the second antibody is performed, and the antibody is selected as a hybridoma that produces a monoclonal antibody that specifically reacts with the antigen.
- Pristane-treated [0.5 mL of 2,6,10,14-tetramethylpyrene decane (Pristane) was intraperitoneally administered and bred for 2 weeks] to 8-10 week old mice or nude mice. ).
- the anti-human SCGF monoclonal antibody-producing hybridoma cells obtained in 2) are injected intraperitoneally from 2 ⁇ 10 6 to 5 ⁇ 10 7 cells / animal. Hypridoma develops ascites cancer in 10-21 days.
- Trp L-tryptophan
- Trt Trityl
- Fmoc-Arg (Pmc) -OH N ⁇ -9-fluorenylmethyloxycarbonyl -Ng-2,2,5,7,8-pentamethylc-mouth-6-sulfonyl -L_arginine
- Fmoc-Gln (Trt) -OH N ⁇ -9-fluorenylmethyloxycarbonyl - ⁇ ⁇ - Trityl-L-glutamine
- Mass spectrometry was performed by the FAB-MS method using JEOL JMS-HX110A or by the MALDI-TOFMS method using a mass spectrometer REFLEX manufactured by Bull Power Co., Ltd. went.
- Amino acid analysis was performed by the method of Cohen, SA [Analytical Biochemistry, 222, 19 (1994)].
- Hydrolysis was performed in hydrochloric acid vapor at 110 ° C. for 20 hours, and the amino acid composition of the hydrolyzate was analyzed using a Waters AccQ-Tag amino acid analyzer (manufactured by Waters).
- Fmoc-Cys (Trt) 14 mg bound carrier resin (H-Cys (Trt) -2-ClTrt resin resin, manufactured by Novapichem) 30 mg was placed in a reaction vessel of an automatic synthesizer (Shimadzu), and 600 L After adding DMF and stirring for 3 minutes to discharge the solution, the following operation was performed according to the synthesis program of Shimadzu Corporation.
- step (c) After the steps (a) and (b), a condensation reaction is performed in step (c) using Fmoc-Ala'OH, and after the washing step (d), Fmoc-Ala-Leu-Cys ( (Trt) was synthesized on the support.
- step (c) Fmoc-Glu (OtBu) -OH, Fmoc-Arg (Pmc) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Arg (Pmc) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Glu (OtBu) -OH, Fmoc-Gln (Trt) -OH, Fmoc-Ala-OH, Fmoc-GlyOH> Fmoc-Gly-OH Fmoc-Trp (Boc ) -OH, Fmoc-Gly-OH, Fmoc-GlyOH, Fmoc-Glu (OtBu) -OH, Fmoc-Trp-OH, Fmoc-Glu (OtBu) -OH, Fmoc-Trp-OH, Fmoc-Glu (OtBu)
- TFA 82.5%) containing 2-methylindole at a concentration of 5 mg / inL, thioazole (5%), water (5%), ethyl methyl sulfide (3%), 1 mL of a mixed solution consisting of 1,2-ethanedithiol (2.5%) and thiophenol (2%) was added, and the mixture was allowed to stand at room temperature for 6 hours to remove the side-chain protecting groups and to cut out the peptide from the resin.
- the human SCGF partial peptide obtained in Example 1 (1) was conjugated with KLH (manufactured by Calbiochem) by the following method in order to enhance immunogenicity, and used as an immunogen. That is, KLH is dissolved in PBS to adjust to 10 mg / mL, 1/10 volume of 25 mg / mL MBS (manufactured by Nacalai Tesque) is added dropwise, and the mixture is stirred and reacted for 30 minutes. 2.5 mg of KLH-MB obtained by removing free MBS using a gel filtration column such as a Sephadex G-25 column equilibrated with PBS in advance was dissolved in 0.1 mol / L sodium phosphate buffer (pH 7.0). The mixture was mixed with 1 mg of the peptide and allowed to react with stirring at room temperature for 3 hours. After the reaction, the solution was dialyzed against PBS.
- KLH manufactured by Calbiochem
- Example 1 100 zg of the peptide-KLH conjugate prepared in Example 1 (2) was administered to a 5-week-old female rat (SD) together with 2 mg of aluminum gel and 1 ⁇ 10 9 cells of pertussis vaccine (Chiba Prefectural Serum Institute). After 100 weeks, 100 [ig] conjugate was administered once a week for a total of four times. Blood was collected from the fundus venous plexus, and its serum antibody titer was examined by the enzyme immunoassay described in (4) below, and the spleen was extracted 3 days after the last immunization from a rat showing a sufficient antibody titer.
- the spleen is shredded in a MEM medium (manufactured by Nissui Pharmaceutical Co., Ltd.), loosened with forceps, centrifuged (1,200 rpm, 5 minutes), the supernatant is discarded, and tris-ammonium chloride buffer (pH 7.65)
- MEM medium manufactured by Nissui Pharmaceutical Co., Ltd.
- the cells were treated for 1-2 minutes to remove red blood cells, washed three times with MEM medium, and used for cell fusion.
- the human SCGF partial peptide obtained in Example 1 (1) conjugated with thyroglobulin (hereinafter abbreviated as THY) was used as the bovine for Atsushi.
- the preparation method was as described in Example 1 (2), except that SMCC (manufactured by Sigma) was used as the crosslinking agent instead of MBS.
- SMCC manufactured by Sigma
- 96-hole EIA The conjugate prepared as described above was dispensed at 10 zg / mL, 50 ⁇ L / well into a plate for use (manufactured by Grainer Co., Ltd.) and allowed to stand at 4 ° C for adsorption.
- 1%: 68 ⁇ 88 was added in 100 1 ⁇ / hole and allowed to react at room temperature for 1 hour to block the remaining active groups.
- 1% BSA-PBS was discarded, and the immunized mouse antiserum, culture supernatant of anti-human SCGF monoclonal antibody or purified monoclonal antibody was dispensed at 50 L / well and reacted for 2 hours.
- peroxidase-labeled ⁇ heron anti-rat immunoglobulin manufactured by Dako was added at 50 iL / well at room temperature and reacted for 1 hour at room temperature.
- ABTS substrate solution [2.2-Azinobis (3-E) [Tilbenzothiazole-6-sulfonic acid] ammonium]
- the absorbance at OD 415 nm was measured with a plate reader (E-max; manufactured by Molecular Devices).
- the 8-azaguanine-resistant mouse myeloma cell line P3-U1 was cultured in a normal medium, and cells of 2 ⁇ 10 7 or more were secured at the time of cell fusion and used as a parent strain for cell fusion.
- the monoclonal antibody is IgM, salt out with 50% ammonium sulfate, dialyze against PBS supplemented with 0.5M sodium chloride, and apply to the column of Cell Open Fine GSL2000 (Seikagaku Corporation) (Bed Polymer 750mL). The mixture was passed through the column at a flow rate of 15 mL / hour to collect the IgM fraction, which was used as a purified monoclonal antibody.
- the monoclonal antibody was IgG, it was purified by a caprylic acid precipitation method [Antibodies-A Laboratory Manual, Cold Spring Harbor Laboratory (1988)] to obtain a purified monoclonal antibody.
- the antibody subclass was determined by enzyme immunoassay using a subcluster typing kit (Table 1). (table 1 )
- the reactivity of the anti-human SCGF monoclonal antibody selected in Example 1 (6) with the human SCGF partial peptide (compound 1) was examined by the enzyme immunoassay shown in (4).
- As the control peptide a peptide consisting of the amino acid sequence at positions 140 to 156 of SEQ ID NO: 1, which is a SCGF partial peptide different from compound 1, was used.
- the anti-human SCGF monoclonal antibody (KM2141 to 2145) specifically reacted with compound 1, but did not react with the control peptide.
- HindlllZKpnl-treated fragment of animal cell expression vector PAGE210 (WO96 / 34016) and DNA encoding SCGF protein [Mio et.al., BBRC 249, 124-130 (1998)] were ligated to obtain human SCGF.
- Plasmid was introduced into animal cells by the electroporation method [Miyaji et al., Cytotechnology, 3, 133-140 (1990)] according to Miyachi et al. 4 g of pAGE-SCGF-a was introduced into 4 ⁇ 10 6 CHO cells lacking the dhfr gene [Urlaub and Chasin, Proc. Natl. Acad. Sci. USA, 77, 4216-4220 (1980)]. Transfer the cells to 10 mL of MEMa2000_dFCS (5) medium.
- the cells were centrifuged to obtain a culture supernatant sample.
- Anti-rat immunoglobulin 1.3 g / L was shaken at room temperature for 60 minutes in a solution diluted to 1 / 1,000 with PBS. After washing twice with a PBS buffer containing 0.05% tween20 for 5 minutes and once with a PBS buffer for 5 minutes, detection was performed by the luminescence method (ECL Western blotting detection reagents, Amersham Pharmacia Biotech). went.
- Ammonium sulfate was added to the above-mentioned partially purified fraction of zinc zinc oxide matrix to obtain a final concentration of 65%, stirred, and allowed to stand at 4 ° C for 2 hours.
- the precipitate obtained by centrifugation at 18,800 X for 30 minutes was dissolved in 10 mmol / L Tris-HCl buffer (pH 7.0) and equilibrated with the same Tris-HCl buffer.
- MonoQ HR 5/5 column (Amersham Pharmacia Biotech) was added to the product. After washing thoroughly with the same buffer, elution was performed with a linear gradient of 0 to 1 niol / L sodium chloride.
- the first step zinc chelate chromatography
- Ammonium sulfate was added to the above roughly purified fraction of zinc chelate chromatograph to obtain a final concentration of 50%, stirred, and allowed to stand at 4 ° C for 2 hours.
- the precipitate obtained by centrifugation at 18,800 g for 30 minutes was dissolved in lOmmol / L Tris-HCl buffer (pH 7.0), and the MonoQ HR 10/10 column (Amersham Pharmacia Biotech) equilibrated with the same Tris-HCl buffer ). After thorough washing with the same buffer, elution was performed with a linear gradient of 0 to 1 mol / L sodium chloride. SDS-PAGE was performed using a part of the eluted fraction, and a fraction containing a crossing band of about 45 kDa was collected by Western plotting with KM2142 shown in (2) above.
- Step 3 S-400 gel filtration chromatography
- N-terminal amino acid sequence analysis of human SCGF protein JP03 / 04531 The N-terminal amino acid sequence of the purified human SCGF protein obtained in Example 2 (3) was determined according to a conventional method of protein chemistry. The fraction containing the purified human SCGF protein was subjected to SDS-PAGE and then electrically transferred to a PVDF membrane (ProBlott, Applied Biosystems) according to the method of silver staining (lane 2 in Fig. 2) or P. Matsudaira. . The transferred membrane was stained with Coomassie blue and had apparent molecular weights of 45 kDa (Fig. 2, lane 2, non-A), 41 kDa (Fig. 2, lane 2, non-B), 34 kDa (Fig.
- the amino acid sequence was determined using a gas-phase protein sequencer (PPSQ-10, Shimadzu Corporation) according to the method recommended by the manufacturer.
- PPSQ-10 gas-phase protein sequencer
- the obtained amino acid sequence is the first amino acid residue, the 29th amino acid residue, and the 60 amino acid residues from the N-terminal of the amino acid sequence of SCGF described in SEQ ID NO: 1.
- the amino acid sequence was identical to the base sequence.
- the SCGF protein with an N-terminal 28 residue deletion with an apparent molecular weight of about 41 kDa shown in lane 2 in Fig. 2 is called ⁇ 28, and the SCGF protein with an N-terminal 59 residue deletion of about 34 kDa is called 959. Name.
- Example 2 100 g of CHO cell-expressing human SCGF protein (SCGF, mixture of ⁇ 28 and ⁇ 59 SCGF) obtained in Example 2 (3) was mixed with 100 mg of aluminum gel and pertussis vaccine (Chiba Prefectural Serum Institute) 1 ⁇ The cells were administered to 6-week-old female mice (Balb) together with 10 9 cells, and after 2 weeks, 100 g of human SCGF protein was administered once a week for a total of three times.
- SCGF CHO cell-expressing human SCGF protein obtained in Example 2 (3) was mixed with 100 mg of aluminum gel and pertussis vaccine (Chiba Prefectural Serum Institute) 1 ⁇
- Alb 6-week-old female mice
- 100 g of human SCGF protein was administered once a week for a total of three times.
- Blood was collected from the fundus venous plexus, and its serum antibody titer was determined by enzyme-linked immunosorbent assay as described in Example 1 (4) (however, CHO cell-expressed human SCGF protein was used as the antigen for the assay, and 1% BSA-PBS was used as the control antigen). Used) and the sandwich ELISA method shown below Three days after the last immunization, the spleen was removed from a mouse that showed a sufficient antibody titer as examined in 1.
- the anti-human SCGF monoclonal antibody KM2142 obtained in Example 1 was dispensed into a 96-well EIA plate (manufactured by Glyna) at 10 ⁇ g / mL and 50 L / well at 4 ° C. It was left to absorb overnight. After washing, 1% BSA-PBS was added at 100 / iL / well and allowed to react at room temperature for 1 hour to block the remaining active groups. 1% BSA-PBS was discarded, and CHO cell-expressed human SCGF protein diluted at 5 g / mL with 1% BSA-PBS was dispensed at 50 L / well and reacted at room temperature for 2 hours.
- 1% BSA-PBS was dispensed in 50 L / well and reacted similarly.
- the culture supernatant of the immunized mouse antiserum obtained in (1) above was dispensed at 50 L / well and allowed to react for 2 hours.
- peroxidase-labeled anti-mouse immunoglobulin rat serum protein absorbed; manufactured by Caltag
- Example 3 Cell fusion of the mouse spleen cells obtained in Example 3 (1) and the myeloma cells obtained in (3) was performed in the same manner as in Example 1 (6).
- the resulting cell suspension plates for 96-well culture into 100 pL / well portions dispensed, in 5% C0 2 incubator one, 10 to 14 days at 37 ° C, and cultured.
- This culture The supernatant was examined by the sandwich ELISA method described in Example 3 (2), and the wells that reacted with the human SCGF protein and did not react with the control 1% BSA-PBS were selected, and then replaced with HT medium and normal medium. This was repeated twice to establish anti-human SCGF monoclonal antibody producing hybridomas KM2801, KM2802, KM2803 and KM2804.
- Example 3 The hybridoma strain obtained in Example 3 (4) was intraperitoneally administered to nude female mice in the same manner as in Example 1 (7), and a purified monoclonal antibody was obtained from the obtained ascites.
- the antibody subclass was determined by enzyme immunoassay using subcluster ipin. Kit. The results are shown in Table 2.
- Example 4 The reactivity of the human SCGF monoclonal antibody obtained in Example 3 (4) with the CHO cell-expressed human SCGF protein was examined by the enzyme immunoassay described in Example 1 (4). As shown in Figure 3, anti-human SCGF monoclonal antibodies (KM2801, KM2802, KM2803, and KM2804) specifically reacted with CHO cell-expressed human SCGF protein and reacted with control 1% BSA-PBS. Did not.
- Example 4 Production of anti-human SCGF monoclonal antibody using SDS-denatured human SCGF protein (CHO cell expression)
- the CHO cell-expressing human SCGF protein obtained in Example 2 (3) was denatured with SDS (sodium lauryl sulfate; manufactured by Nacalai Tesque) to prepare an immunogen. That is, 5% SDS-PBS was prepared, 1/9 amount was added to human SCGF protein expressing CHO cells, and the mixture was boiled at 100 ° C for 5 minutes to obtain SDS-denatured human SCGF protein.
- SDS sodium lauryl sulfate
- Example 4 (1) 100 g of the SDS-denatured human SCGF protein obtained in Example 4 (1) was administered to a 6-week-old female mouse (Balb / c) together with 2 mg of aluminum gel and 1 ⁇ 109 cells of pertussis vaccine (Chiba Prefectural Serum Institute). Two weeks later, 100 zg of SDS-denatured human SCGF protein was administered once a week for a total of three times. Blood was collected from the fundus venous plexus, and its serum antibody titer was determined by the enzyme immunoassay described in Example 1 (4) (however, SDS-denatured human SCGF protein was used as an antigen for atssay, and 1% BSA-PBS was used as a control antigen). The spleen was removed 3 days after the last immunization from the mouse that showed a sufficient antibody titer.
- Example 4 Cell fusion between the TJP03 / 04531 cells and the myeloma cells obtained in (3) was performed.
- the resulting cell suspension was dispensed by 100 ⁇ L / well to the plate for a 96-well culture, in 5% C0 2 incubator primary, 10 at 37 ° C: L4_nichikan and cultured.
- the culture supernatant was examined by the enzyme immunoassay described in Example 1 (4) .Select wells that reacted with SDS-denatured human SCGF protein and did not react with the control 1% BSA-PBS.
- the medium was replaced with a normal medium, and cloning was repeated twice to establish hybridomas KM2941, KM2942, KM2943 KM2944 and KM2945 producing anti-human SCGF monoclonal antibody.
- Example 4 The hybridoma strain obtained in Example 4 (4) was administered intraperitoneally to nude female mice in the same manner as in Example 1 (7), and a purified monoclonal antibody was obtained from the ascites obtained.
- the antibody subclass was determined by enzyme immunoassay using a subcluster typing kit. The results are shown in Table 3.
- Anti-SCGF monoclonal antibody KM2142 was prepared using a partial peptide (compound 1) corresponding to the 6th to 25th residues from the N-terminal of the amino acid sequence of SCGF shown in SEQ ID NO: 1 as an antigen. It is an antibody derived from a hybridoma. The anti-SCGF monoclonal antibody KM2142 was also shown to have reactivity to SCGF protein. In addition, the anti-SCGF monoclonal antibody KM2142 was reactive with both human and mouse SCGF proteins.
- Anti-SCGF monoclonal antibody KM2804 is a hybridoma-derived antibody prepared using CHO cell-expressed human SCGF as an antigen.
- the anti-SCGF monoclonal antibody KM2804 reacted only with human SCGF and did not show cross-reactivity with mouse SCGF.
- Anti-SCGF monoclonal antibody KM2945 is a hybridoma-derived antibody prepared using SDS-modified SCGF protein (CHO cell expression) as an antigen.
- the anti-SCGF monoclonal antibody KM2945 was also shown to have reactivity to native SCGF protein. Also, anti-SCGF The monoclonal antibody KM2945 did not show cross-reactivity to mouse SCGF.
- Example 2 Using the CHO cell-expressed human SCGF protein obtained in Example 2 (3), the reactivity of the anti-human SCGF monoclonal antibodies KM2804 and KM2945 prepared in Examples 3 and 4 in Western plotting was examined.
- the sample transferred to the PVDF membrane in the same manner as in Example 2 (2) was shaken in a blocking solution at room temperature for 30 minutes, and then shaken at room temperature for 60 minutes with an anti-SCGF monoclonal antibody diluted to 1 mg / mL with a blocking solution.
- the transfer membrane was further washed twice with PBS buffer containing 0.05% tween20 for 5 minutes and once with PBS buffer for 5 minutes, and then diluted with PBS to 1 / 1,000 peroxidase labeling.
- the mixture was shaken at room temperature for 60 minutes in an anti-mouse IgG antibody (Amersham Pharmacia Biotech) solution. After washing twice with a PBS buffer containing 0.05% tween 20 for 5 minutes and once with a PBS buffer for 5 minutes, detection was performed by the ECL luminescence method described above.
- Lanes 3, 4, and 5 in FIG. 2 show the results of Western blotting of purified human SCGF protein using KM2142, KM2804, and KM2945, respectively.
- KM2804 is an N-terminal 59-residue deleted SCGF protein. It is not reactive with 59-body, but is a full-length SCGF and N-terminal 28-residue deleted SCGF protein. The body was reactive.
- KM2945 was reactive with both full-length SCGF and deletions.
- Example 6 Human SCGF quantification system
- the anti-human SCGF monoclonal antibody KM2142 obtained in Example 1 was labeled with biotin by the following method.
- the purified KM2142 antibody obtained in Example 1 was diluted to 1 mg / mL with PBS, and 1/4 volume of 0.5 mol / L carbonate buffer (pH PC Garan 31
- the anti-human SCGF monoclonal antibody KM2804 obtained in Example 3 was dispensed into a 96-well plate for EIA (manufactured by Glyna) at 5 xg / niL, 50 IJ well at 4 ° C. ⁇ ⁇ Leave it and let it adsorb. After washing, 1% BSA-PBS was added at 100 L / well and reacted at room temperature for 1 hour to block the remaining active groups.
- Example 2 1% BSA-PBS was discarded, and the CHO cell-expressing human SCGF protein obtained in Example 2 (4) was diluted with serum diluent (manufactured by Kyowa Medex) from 17.5 ng / mL to 14-point dilution in a 2-fold dilution series.
- serum diluent manufactured by Kyowa Medex
- After washing with tween-PBS add the biotin-labeled KM2142 obtained above (diluted to 0.2 ig / mL with BSA-PBS) at 50 L / well, react at room temperature for 2 hours, and wash with tween-PBS.
- alkaline phosphatase-labeled avidin (manufactured by Zymed) was added at a dilution of 32,000-fold at 50 ⁇ L / well, and the mixture was reacted at room temperature for 1 hour. After washing with tween-PBS, the color was developed using AmpliQ (manufactured by DAKO) and the absorbance at OD 490 nm was measured with a plate reader (E-max; manufactured by Molecular Devices). As a result, as shown in FIG. 6, it was possible to quantify human SCGF protein in the range of 0.04 to 2.0 ng / mL using this quantification system.
- Example 7 Serum SCGF concentration in leukemia, preleukemia patients and non-leukemic malignant blood diseases
- the SCGF concentration in the serum of leukemia, preleukemia patients and non-leukemic malignant hematological diseases from which informative consent was obtained was measured by the method of Example 6.
- the serum SCGF concentration was measured in 10 healthy male and female healthy subjects with normal blood cell test values.
- Fig. 7 shows the results. After confirming that the distribution of values for healthy subjects shows a normal distribution, the mean and standard deviation (SD) are calculated from this group, and the mean + 2 SD value is distinguished from normal and abnormal Set to reference value.
- AML Acute myeloid leukemia
- ALL acute lymphocytic leukemia
- CML chronic myelogenous leukemia
- MDS myelodysplastic syndrome
- NHL non-Hodgkin's lymphoma
- MM multiple bone marrow
- Non-Hodgkin's lymphoma (NHL), multiple myeloma (MM), myelodysplastic syndrome (MDS), acute myeloid leukemia (AML), acute lymphocytic leukemia (ALL), Compared to chronic myelogenous leukemia (CML), the SCGF concentration in F blood of non-Hodgkin's leukemia patients such as acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), and chronic myeloid leukemia (CML)
- AML acute myeloid leukemia
- ALL acute lymphoblastic leukemia
- CML chronic myeloid leukemia
- SCGF concentration in F blood of non-Hodgkin's leukemia patients such as acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), and chronic myeloid leukemia (CML)
- SCGF concentrations could be used to distinguish leukemia from pre-leukemia and non-leukemic malignant hemat
- Serum SCGF concentration in 15 patients who developed GVHD and 8 patients who did not develop GVHD out of 23 patients who received hematopoietic stem cell transplantation from leukemia and preleukemia patients who obtained informed consent The measurement was performed for each stage by using.
- Figure 8 shows the results.
- SCGF levels in patients undergoing hematopoietic stem cell transplantation were significantly higher during the recovery phase and the stable phase than during the preconditioning phase and the plastic phase.
- the SCGF concentration of hematopoietic stem cell transplant patients was measured, the cut-off value was determined, and it was examined whether it was possible to determine the cases of delayed hematopoietic stem cell engraftment and non-delayed cases by comparing the cut-off value and the values of individual patients.
- the results are shown in FIG.
- the cutoff value is set to, for example, 9.5 ng / mL, and the sensitivity is 75% and the specificity is 67% .
- the cutoff value is set to 12 ng / mL, and the sensitivity is 75%. With a specificity of 63%, it was possible to discriminate between cases with delayed hematopoietic stem cell engraftment and cases without delay.
- Example 10 Expression of SCGF in peripheral blood cells of leukemia patients
- RNAl ⁇ g was treated with DNasel (GIBCO), and reverse-transcribed using Superscript First-Strand Synthesis System for RT-PCR (GIBCO) to prepare First-Sti'and DNA.
- GIBCO Superscript First-Strand Synthesis System for RT-PCR
- the prepared First-Strand DNA was designated as type I, and oligo DNA having the nucleotide sequences of SEQ ID NOS: 8 and 9 and SEQ ID NOs: 10 and 11 was designated as a primer, respectively.
- the present invention provides a method for determining leukemia, preleukemia, or non-leukemic malignant blood disease using an antibody that reacts with SCGF, determining hematopoietic stem cell survival delay after hematopoietic stem cell transplantation, and determining graft-versus-host reaction disease And a diagnostic agent and a diagnostic kit thereof.
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/510,627 US7479371B2 (en) | 2002-04-09 | 2003-04-09 | Method of judging leukemia, pre-leukemia or aleukemic malignant blood disease and diagnostic therefor |
CA002481710A CA2481710A1 (en) | 2002-04-09 | 2003-04-09 | Method of judging leukemia, pre-leukemia or aleukemic malignant blood disease and diagnostic therefor |
AU2003236028A AU2003236028A1 (en) | 2002-04-09 | 2003-04-09 | Method of judging leukemia, pre-leukemia or aleukemic malignant blood disease and diagnostic therefor |
JP2003582535A JPWO2003085399A1 (ja) | 2002-04-09 | 2003-04-09 | 白血病、前白血病または非白血病性悪性血液疾患の判定方法及び診断薬 |
EP03745988A EP1496360A4 (en) | 2002-04-09 | 2003-04-09 | METHOD OF DETERMINING LEUKEMIA, PRELEUGEEMY OR ALEUCEMIC MALIGNANT BLOOD DISEASE, AND DIAGNOSTIC METHOD |
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PCT/JP2003/004531 WO2003085399A1 (fr) | 2002-04-09 | 2003-04-09 | Methode de determination d'une leucemie, d'une preleucemie ou d'une maladie sanguine maligne aleucemique, et methode diagnostique |
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US (1) | US7479371B2 (ja) |
EP (1) | EP1496360A4 (ja) |
JP (1) | JPWO2003085399A1 (ja) |
KR (1) | KR20050027211A (ja) |
CN (1) | CN1646910A (ja) |
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998008869A1 (fr) * | 1996-08-27 | 1998-03-05 | Kyowa Hakko Kogyo Co., Ltd. | Facteur de croissance des cellules souches hematopoietiques (scgf) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19648596A1 (de) | 1996-11-23 | 1998-05-28 | Teves Gmbh Alfred | Vefahren zum Betreiben einer blockiergeschützten Kraftfahrzeugbremnsanlage |
FR2771750A1 (fr) | 1997-12-03 | 1999-06-04 | Univ Nice Sophia Antipolis | Clonage, expression et caracterisation de l'adnc codant pour un polypeptide lvbl et application au diagnostic et au traitement d'infection virale |
CA2395443A1 (en) | 1999-12-23 | 2001-07-26 | Hyseq, Inc. | Methods and materials relating to stem cell growth factor-like poypeptides and polynucleotides |
-
2003
- 2003-04-09 CA CA002481710A patent/CA2481710A1/en not_active Abandoned
- 2003-04-09 CN CNA038080362A patent/CN1646910A/zh active Pending
- 2003-04-09 EP EP03745988A patent/EP1496360A4/en not_active Withdrawn
- 2003-04-09 AU AU2003236028A patent/AU2003236028A1/en not_active Abandoned
- 2003-04-09 WO PCT/JP2003/004531 patent/WO2003085399A1/ja active Application Filing
- 2003-04-09 JP JP2003582535A patent/JPWO2003085399A1/ja active Pending
- 2003-04-09 KR KR1020047016144A patent/KR20050027211A/ko not_active Application Discontinuation
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998008869A1 (fr) * | 1996-08-27 | 1998-03-05 | Kyowa Hakko Kogyo Co., Ltd. | Facteur de croissance des cellules souches hematopoietiques (scgf) |
Non-Patent Citations (2)
Title |
---|
PERRIN ET AL.: "Expression of LSLCL, a new C-type lectin is closely restricted in bone marrow to immature neutrophils", C.R. ACAD. PARIS, SCIENCES DE LA VIE, vol. 324, no. 12, 2001, pages 1125 - 1132, XP004327080 * |
See also references of EP1496360A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104471393A (zh) * | 2012-06-14 | 2015-03-25 | 鹿特丹伊拉斯姆斯大学医疗中心 | 用于检测微小残留病的方法、试剂以及试剂盒 |
CN104471393B (zh) * | 2012-06-14 | 2017-07-07 | 鹿特丹伊拉斯姆斯大学医疗中心 | 用于检测微小残留病的方法、试剂以及试剂盒 |
US10126292B2 (en) | 2014-03-31 | 2018-11-13 | Sysmex Corporation | Blood analyzer |
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EP1496360A1 (en) | 2005-01-12 |
KR20050027211A (ko) | 2005-03-18 |
CA2481710A1 (en) | 2003-10-16 |
CN1646910A (zh) | 2005-07-27 |
AU2003236028A1 (en) | 2003-10-20 |
EP1496360A4 (en) | 2007-06-27 |
US20060084122A1 (en) | 2006-04-20 |
US7479371B2 (en) | 2009-01-20 |
JPWO2003085399A1 (ja) | 2005-08-11 |
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