摘要
目的 建立Ⅱ型胶原特异性T细胞系 ,研究其对关节炎的诱导作用。方法 通过用弗氏完全佐剂乳化的鸡Ⅱ型胶原 (CCⅡ )皮内免疫注射诱导Wistar大鼠胶原诱导性关节炎 (CIA)。取CIA大鼠肠系膜淋巴细胞在体外用CCⅡ刺激扩增、建立CCⅡ反应性T细胞系。用3 H TdR掺入试验和流式细胞术分别测定其克隆扩增情况和表型格局。观察T细胞系过继转输后Wistar大鼠关节炎的发生情况 ,同时通过肉眼观察和组织化学法鉴定受体大鼠踝关节的病理特征 ;并用酶联免疫吸附试验 (ELISA)测定血清中抗CCⅡ抗体。结果 成功建立T细胞系。通过用荧光素标记抗体作细胞表型分析显示 :所建细胞系 98 2 %为T细胞 ,其中 89 7%为CD4 + T细胞。过继转输试验结果显示 :当注入细胞为 5× 1 0 7时可导致 5 0 %大鼠产生关节炎 ,抗CCⅡ抗体也较对照组明显升高。结论 成功建立T细胞系 ;T细胞系转移关节炎的结果提示 :T细胞在CIA发病机制中具有重要作用。
Objective To establish the type Ⅱ collagen specific T cell line of Wistar rat and observe its effect on transferring arthritis.Methods The Wistar rats were immunized with emulsified chicken type Ⅱ collagen (CCⅡ) in complete Freund′s adjuvant by intradermal injection to induce the rat model of collagen induced arthritis (CIA).The lymphocytes were obtained from mesenteric lymph nodes of CIA rats,and the type Ⅱ collagen reactive T cell line was selected and propagated by CCⅡ stimulating in vitro .The proliferation response and phenotype were analyzed by 3 H TdR incorporation and fluorescence activated cell sorter (FACS).The onset of arthritis and pathological characteristic in ankle joints of recipient rats were observed with naked eye and histochemical examination.Anti CCⅡ antibody in serum was assayed by enzyme linked immunosorbent assay (ELISA).Results A T cell line was successfully established.The results of FACS labeled with fluorescent antibodies showed that 98 2% of the line cells were T cells,of which 89 7% were CD4 + T cells.The results of adoptive transfer showed that the incidence of arthritis was 50% when the injected cell number was 5×10 7,meanwhile the level of anti CCⅡ antibody in serum was elevated more than that of the control.Conclusion A cell line has been successfully established.The result of arthritis transferring by T cell line shows that the T cell plays a great role in the pathogenesis of CIA and provides a research datum for rheumatoid arthritis therapy with T cell vaccine.
出处
《中华风湿病学杂志》
CAS
CSCD
2003年第9期527-530,T001,共5页
Chinese Journal of Rheumatology
基金
上海市科委发展基金资助项目 ( 0 0xd14 0 2 1)
