肾移植排斥反应中细胞毒性T淋巴细胞相关抗原4的作用陈昌庆1,石炳毅2,蔡明2,赵豫波2,金伯泉3,王春艳3,韩永2,肖漓2,周文强2,李州利21解放军医学院,北京市100853;2解放军第309医院全军器官移植研究所,北京市100091;3解放军第四军医大学免疫教研室,陕西省西安市710032CytotoxicTlymphocyte-associatedantigen4inacuterejectionafterrenaltransplantationChenChang-qing1,ShiBing-yi2,CaiMing2,ZhaoYu-bo2,JinBo-quan3,WangChun-yan3,HanYong2,XiaoLi2,ZhouWen-qiang2,LiZhou-li21ChinesePLAMedicalSchool,Beijing100853,China;2OrganTransplantationInstituteofPLA,the309thHospitalofPLA,Beijing100091,China;3DepartmentofImmunology,theFourthMilitaryMedicalUniversityofPLA,Xi’an710032,ShaanxiProvince,China背景:细胞毒性T淋巴细胞相关抗原4是新近发现的共刺激分子,在肿瘤及自身免疫性疾病中研究较多,在肾移植领域缺少研究。目的:探讨细胞毒性T淋巴细胞相关抗原4在肾移植排斥反应中的作用。方法:纳入肾移植患者50例,根据移植后肾功能分为2组,急性排斥组20例,移植肾功能稳定组30例。同时选择30例健康查体者作为健康对照组。分别抽取外周静脉血,采用ELISA法及流式细胞术检测观察对象血清及外周血淋巴细胞中的细胞毒性T淋巴细胞相关抗原4水平。结果与结论:细胞毒性T淋巴细胞相关抗原4在肾移植后急性排斥组、肾功能稳定组及健康对照组血清中的表达水平差异有显著性意义(F=70.0081,P=0.0000)。肾功能稳定组显著低于健康对照组(P=0.0000),急性排斥组显著低于健康对照组(P=0.0000),急性排斥组显著低于肾功能稳定组(P=0.0000)。细胞毒性T淋巴细胞相关抗原4在肾移植后急性排斥组、肾功能稳定组及健康对照组淋巴细胞中的表达水平差异无显著性意义(F=1.8656,P=0.1617)。提示细胞毒性T淋巴细胞相关抗原4在肾移植患者发生排斥反应时血清中表达减低,具有一定的相关性,可能参与了排斥反应的发生。中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程全文链接:关键词:实验动物;组织构建;肾移植;细胞毒性T淋巴细胞相关抗原4;急性排斥反应;尿毒症;共刺激分子;免疫抑制剂;Abstract:BACKGROUND:CytotoxicTlymphocyte-associatedantigen4isanewlydiscoveredcostimulatorymolecule.Ithasbeenstudiedmoreintumorandautoimmunediseases,lessinthefieldofkidneytransplantation.OBJECTIVE:ToexploretheroleofcytotoxicTlymphocyte-associatedantigen4inacuterejectionafterrenaltransplantation.METHODS:Fiftypatientsundergoingrenaltransplantationweredividedintoacuterejectiongroup(20cases)andstablegraftfunctiongroup(30cases).Another30healthypersonsservedascontrolgroup.Bloodsampleswereextractedfromtheperipheralblood.CytotoxicTlymphocyte-associatedantigen4wasdetectedbyenzymelinkedimmunosorbentassayandflowcytometry.RESULTSANDCONCLUSION:TheexpressionofcytotoxicTlymphocyte-associatedantigen4intheserumshowedsignificantdifferencesintheacuterejectiongroup,stablegraftfunctiongroupandhealthycontrolgroup(F=70.0081,P=0.0000),butshowednodifferenceinperipheralbloodlymphocytesofthreegroups(F=1.8656,P=0.1617).Comparedwiththehealthycontrolgroup,theexpressionlevelsofcytotoxicTlymphocyte-associatedantigen4inperipheralbloodlymphocytesofacuterejectiongroupandstablegraftfunctiongroupweresignificantlydecreased(P=0.0000).Inaddition,theacuterejectiongrouphadalowercytotoxicTlymphocyte-associatedantigen4expressionthanthestablegraftfunctiongroup(P=0.0000).Inrenaltransplantrejection,theexpressionofcytotoxicTlymphocyte-associatedantigen4inserumwasreduced,showingsomecorrelationwithacuterejectionafterrenaltransplnatation.CytotoxicTlymphocyte-associatedantigen4mightbeinvolvedintherejection.中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程全文链接:Keywords:transplantation;kidneytransplantation;graftrejection;uremia;immunosuppressiveagents;flowcytometry;中图分类号:R318基金资助:国家科技支撑计划(2008BAI60B04)通讯作者:李州利,主任医师,硕士生导师,解放军第309医院全军器官移植研究所泌尿一科,北京市100091作者简介:陈昌庆,男,1988年生,安徽省安庆市人,汉族,解放军医学院在读硕士,主要从事器官移植与移植免疫研究。