检验医学
檢驗醫學
검험의학
LABORATORY MEDICINE
2014年
1期
10-14
,共5页
蔡刚%吴蓓颖%范臻佳%沈茜
蔡剛%吳蓓穎%範臻佳%瀋茜
채강%오배영%범진가%침천
T细胞耗竭%慢性乙型肝炎%四聚体技术
T細胞耗竭%慢性乙型肝炎%四聚體技術
T세포모갈%만성을형간염%사취체기술
T cell exhaustion%Chronic hepatitis B%Major histocompatibility complex-peptide tetramer
目的:评价慢性乙型肝炎(CHB)患者外周血抗原特异性CD8+T细胞的功能及与临床相关指标的关系。方法采用主要组织相容性复合物(MHC )-抗原肽四聚体标记技术检测CHB患者外周血乙型肝炎病毒(HBV)抗原特异性CD8+T细胞,并对其细胞因子分泌能力进行检测,分析其与临床生化和病毒学指标的关系。结果35例人类白细胞相关抗原(HLA)-A基因型为A02或A24的患者中有9例患者至少检出1种被四聚体识别的HBV抗原特异性CD8+T细胞,其白细胞介素2(IL-2)和γ干扰素(IFN-γ)的分泌能力明显低于其自身的外周血总CD8+T细胞。检出抗原特异性CD8+T细胞患者的血清丙氨酸氨基转移酶(ALT)水平明显高于阴性患者,而HBV DNA水平低于阴性患者。结论 CHB患者外周血抗原特异性CD8+T细胞存在明显的功能缺陷,可能因病毒抗原持续刺激造成功能耗竭,但外周血出现抗原特异性CD8+T细胞仍表明患者体内出现较强抗病毒免疫反应。
目的:評價慢性乙型肝炎(CHB)患者外週血抗原特異性CD8+T細胞的功能及與臨床相關指標的關繫。方法採用主要組織相容性複閤物(MHC )-抗原肽四聚體標記技術檢測CHB患者外週血乙型肝炎病毒(HBV)抗原特異性CD8+T細胞,併對其細胞因子分泌能力進行檢測,分析其與臨床生化和病毒學指標的關繫。結果35例人類白細胞相關抗原(HLA)-A基因型為A02或A24的患者中有9例患者至少檢齣1種被四聚體識彆的HBV抗原特異性CD8+T細胞,其白細胞介素2(IL-2)和γ榦擾素(IFN-γ)的分泌能力明顯低于其自身的外週血總CD8+T細胞。檢齣抗原特異性CD8+T細胞患者的血清丙氨痠氨基轉移酶(ALT)水平明顯高于陰性患者,而HBV DNA水平低于陰性患者。結論 CHB患者外週血抗原特異性CD8+T細胞存在明顯的功能缺陷,可能因病毒抗原持續刺激造成功能耗竭,但外週血齣現抗原特異性CD8+T細胞仍錶明患者體內齣現較彊抗病毒免疫反應。
목적:평개만성을형간염(CHB)환자외주혈항원특이성CD8+T세포적공능급여림상상관지표적관계。방법채용주요조직상용성복합물(MHC )-항원태사취체표기기술검측CHB환자외주혈을형간염병독(HBV)항원특이성CD8+T세포,병대기세포인자분비능력진행검측,분석기여림상생화화병독학지표적관계。결과35례인류백세포상관항원(HLA)-A기인형위A02혹A24적환자중유9례환자지소검출1충피사취체식별적HBV항원특이성CD8+T세포,기백세포개소2(IL-2)화γ간우소(IFN-γ)적분비능력명현저우기자신적외주혈총CD8+T세포。검출항원특이성CD8+T세포환자적혈청병안산안기전이매(ALT)수평명현고우음성환자,이HBV DNA수평저우음성환자。결론 CHB환자외주혈항원특이성CD8+T세포존재명현적공능결함,가능인병독항원지속자격조성공능모갈,단외주혈출현항원특이성CD8+T세포잉표명환자체내출현교강항병독면역반응。
Objective To evaluate the function of peripheral blood hepatitis B virus(HBV)-specific CD8 +T cells from patients with chronic hepatitis B(CHB),and assess its relationship with clinical relative parameters.Methods The HBV-specific CD8 +T cells were detected by staining of major histocompatibility complex (MHC)-peptide tetramers in patients with CHB.The HBV-specific CD8 +T cells were analyzed for cytokine secretion ability.The relationship of HBV-specific CD8 +T cells with clinical biochemical and viral indices was analyzed.Results A total of 9 of 35 patients with human leukocyte antigen (HLA )-A02 genotype or A24 genotype had HBV-specific CD8 + T cells recognized by tetramers in peripheral blood.The HBV-specific CD8 +T cells expressed significantly lower interleukin 2 (IL-2)and interferon gamma (IFN-γ)than their counterpart CD8 +T cells.The patients who can be found HBV-specific CD8 +T cells had higher level of alanine aminotransferase(ALT)and lower HBV DNA load than those without HBV-specific CD8 +T cells.Conclusions Persistent stimulation of HBV antigen is one of the causes of HBV-specific CD8 +T cell dysfunction in patients with CHB.The patients who can be found HBV-specific CD8 +T cells in peripheral blood could have strong anti-virus immunity.