| Project/Area Number |
02670338
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Respiratory organ internal medicine
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| Research Institution | University of Tokyo |
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Principal Investigator |
FUJISAWA Michio University of Tokyo, Health Service center, M. D., 保健センター, 助手 (60218998)
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| Co-Investigator(Kenkyū-buntansha) |
YAMANE Akira University of Tokyo, Faculty of Medicine, M. D., 医学部第三内科, 医員
HAGIWARA Koichi University of Tokyo, Faculty of Medicine, M. D, 医学部第三内科, 助手
OKABE Tetsuro University of Tokyo, Faculty of Medicine, M. D, 医学部第三内科, 助手 (80169135)
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| Project Period (FY) |
1990 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Lung Cancer / Monoclonal Antiboy / Cancer Antigen / Cancer Antiyeu / Lung cancer / Monoclonal antibody |
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| Research Abstract |
Monoclonal antibody(MAb)TFS-2 was produced against Small Cell Lung Cancer and reacted with all tissue types of lung cancer. Recently we tried the radioimmunodetection of human lung cancer with ^<99m>Tc labeled TFS-2 followed by getting clear imaging of primary and metastatic lung cancers in the various tissues such as bone, lung, and liver.
(1)Purification of Common Lung Cancer Antigen.
Masses of metastatic small cell lung cancer to liver was used as source for purification. Samples were solubilized by PBS with 0.5% of NP-40. Samples were twice passed through Affinity Chromatography(tresyl-activated Sepharose 4B couppled with MAb TFS-2). NP-40 was removed by ethanol pi-ecipitatiori. SDS-PAGE showed 2 bands of protein, 39kDa and 33kDa respectedly. Band of 33 kDa reacted with MAb TFS-2 on the Western blotting. Protein of 33kDa was analyzed directly transferring to membrane and 20 amino acid residue was determined.
(2)Analysis of Gene coding Common Lung Cancer Antigen.
The MRNA was obtained from small cell lutig cancer cell line NCI-1169, and the expression CDNA library in plasmid was constructed from the MRNA. The plasmids were transfected to Cos-1 cells and clones expressing antigen on the cell surface were screened by ^<125>I labeled MAb TFS-2. A EDNA clone coding the protein reacted with MAb TFS-2 was isolated.
(3)Production of Monoclonal antibodies of the second generation Several clones of hybridoma cell that reacted with purified antigen presently were obtained.
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