慢性乙型肝炎患者HBV特异性CTL的CD28表达研究  被引量:6

Expression of CD28 on different HBV-specific cytotoxic T lymphocytes in chronic hepatitis B patients

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作  者:王沂芹[1,2] 柏健鹰[3] 傅晓岚[4] 张静波[2] 王惠明[1] 赵婷婷[1] 徐文越[1] 吴玉章[1] 

机构地区:[1]第三军医大学,基础医学部全军免疫学研究所,重庆400038 [2]第三军医大学新桥医院肾内科,全军肾脏病中心,重庆市肾病研究所,重庆400037 [3]第三军医大学新桥医院消化内科,重庆400038 [4]第三军医大学高原军事医学系中心实验室,重庆400037

出  处:《第三军医大学学报》2006年第4期342-344,共3页Journal of Third Military Medical University

基  金:国家重点基础研究发展规划资助项目("973"项目)(2001CB510001);国家自然科学基金资助重大项目(30490241)~~

摘  要:目的检测慢性乙型肝炎患者HBV特异性CTL的CD28表达情况。方法利用MHC-Ⅰ-肽五聚体(pentamer)技术结合流式多色分析技术,直接离体情况下(direct ex vivo)检测慢性乙型肝炎患者3个HLA-A2限制性的HBV表位特异性CTL表达CD28的情况。结果在22例HLA-A2^+患者中,检测出HBcAg(18—27)特异性CTL有13例,频率为0.05%-0.16%;CD28^+的HBcAg(18—27)特异性CTL的百分比为40%(23%-61%)。检测出HBeAg(335—343)有8例,频率为0.05%-0.24%;CD28%+的HBeAg(335—343)特异性CTL的百分比为43%(36%-60%)。检测出HBp(575—583)特异性CTL有9例,频率为0.05%-0.19%;CD28^+的HBpAg(575—583)特异性CTL的百分比为61%(45%-70%)。结论不同HBV抗原表位特异性CTL的CD28表达情况不同。Objective To study expression of CD28 on different HBV-speeifie eytotoxie T lymphoeytes (CTLs). Methods Forty hospitalized patients and out-patients with HBV in Xinqiao hospital were enrolled, 22 HLA-A2^+ , 18 HLA-A2^- and another 5 healthy adults as eontrol. With MHC-Ⅰ-peptide pentamers and muhi-colour FACS, the expression of CD28 was deteeted direet ex vivo among three HLA-A2 limited HBV-speeifie CTLs in CHB patients. Results Among 22 HLA-A2 limited CHB patients, we deteeted HbeAg ( 18 - 27) speeifie CTL in 13 patients, HbeAg (335 -343) speeifie CTL in 8 patients, HBp (575 -583) speeifie CTL in 9 patients. Frequeney of HbeAg (18 -27) pentamer positive eells was 0.05% -0.2% of eireulating CD8^+ lymphoeytes; CD28 expression was 40% (23% to 61% ) of pentamer-positive CD8 eells. Frequeney of HbeAg (335 -343) pentamer positive eells was 0.05% -0.33% of eireulating CD8^+ lymphoeytes; CD28 expression was 43% (36% to 60% ) of pentamer-positive CD8 eells. Frequeney of HBp (575 -583 ) pentamer positive eells was 0. 05% -0.3% of eireulating CD8^+ lymphoeytes; CD28 expression was 61% (45% to 70% ) of pentamer-positive CD8 eells. Conclusion The expression of CD28 is different in different HBV-speeifie CTLs.

关 键 词:慢性乙型肝炎 细胞毒性T淋巴细胞 CD28 MHC-Ⅰ-肽五聚体 

分 类 号:R373.21[医药卫生—病原生物学] R392.11[医药卫生—基础医学]

 

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