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学科主题: 免疫学
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A study on homocysteine-specific CTL from patients with ankylosing spondylitis and reactive arthritis
作者: Gao, XM; Chilvers, MM; Wordsworth, P
会议文集: 10TH INTERNATIONAL CONGRESS ON IMMUNOLOGY, VOLS 1 AND 2
会议名称: 10th International Congress of Immunology
会议日期: NOV 01-06, 1998
出版日期: 1998
会议地点: NEW DELHI, INDIA
关键词: Immunology
通讯作者: Gao, XM (reprint author), Beijing Med Univ, Dept Immunol, Beijing 100083, Peoples R China.
出版者: MEDIMOND S R L
出版地: 40128 BOLOGNA
收录类别: CPCI-S
ISBN: 88-323-1101-1
摘要: Homocysteine is one of the major thiols in human plasma and exists in both protein-bound and free thiol forms. It has been shown that homocysteine can modify, through disulfide bonding, class I HLA antigens in the endoplasmic reticulum of the cell. We have also identified CTL, in patients with ankylosing spondylitis or reactive arthritis. that recognised homocysteine-modified HLA B27. A68 and B8. TCR usage by these T cells was analysed by determining the cDNA sequences encoding their TCR alpha- and beta-chains. TCRAV4 and TCRBV23 gene segments were strongly favoured by HLA A68-restricted Hom-CTL from two unrelated patients. The TCR of B37-restricted CTL appeared to be relatively more heterogeneous. although one of the B27-restricted T cell clones employed TCR V gene segments (AV20S1 and BV5S1) very similar to that of the A68-restricted CTL. An arginine or lysine residue at position alpha 93 of the alpha-chain frequently appeared in the TCR of A68- and B8-restricted Hom-CTL, which may suggest a. potential salt-bridge between the carboxyl group of homocysteine and TCR.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/5546
Appears in Collections:基础医学院_免疫学系_会议论文

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作者单位: Beijing Med Univ, Dept Immunol, Beijing 100083, Peoples R China
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