天津医药
天津醫藥
천진의약
TIANJIN MEDICAL JOURNAL
2014年
2期
160-163
,共4页
李双喜%柳媛%李宝雷%杨树%陈宏%蔡德鸿%张振
李雙喜%柳媛%李寶雷%楊樹%陳宏%蔡德鴻%張振
리쌍희%류원%리보뢰%양수%진굉%채덕홍%장진
胰岛移植%细胞凋亡%糖尿病,实验性%T淋巴细胞亚群%干扰素Ⅱ型%白细胞介素10%转化生长因子β1%大鼠
胰島移植%細胞凋亡%糖尿病,實驗性%T淋巴細胞亞群%榦擾素Ⅱ型%白細胞介素10%轉化生長因子β1%大鼠
이도이식%세포조망%당뇨병,실험성%T림파세포아군%간우소Ⅱ형%백세포개소10%전화생장인자β1%대서
islets of langerhans transplantation%apoptosis%diabetes mellitus,experimental%T-lymphocyte subsets%interferon typeⅡ%interleukin-10%transforming growth factor beta1%rats
目的:研究预先注射供体来源的凋亡细胞对移植胰岛存活时间及外周血T淋巴细胞功能的影响。方法分别利用直线加速器照射及热休克(56℃水浴箱震荡摇1 h)的方法获取供体凋亡细胞和坏死细胞。利用链脲佐菌素(STZ)腹腔注射的方法将接受胰岛移植的大鼠42只诱导为糖尿病模型大鼠后,随机分为4组,分别在胰岛移植前1周注射生理盐水(9只)、正常细胞(12只)、凋亡细胞(12只)及坏死细胞(9只);在注射处理后第7天进行肾包囊下胰岛移植。通过血糖变化评估胰岛存活时间,并在胰岛移植前(注射后1周)、胰岛移植后1周、2周以及发生排斥反应后取3只大鼠采取外周血,利用四甲基偶氮唑盐(MTT)法检测外周血T淋巴细胞的增殖功能;利用多功能流式点阵仪检测外周血T淋巴细胞亚群细胞因子干扰素(IFN)-γ、白介素(IL)-10的水平及酶联免疫方法测定转化生长因子(TGF)-β1水平。结果凋亡细胞预处理能明显延长胰岛移植物存活时间,并抑制外周血T淋巴细胞对刀豆蛋白A刺激的增殖能力;同时在移植后1周、2周抑制了外周血IFN-γ的分泌,而增加了IL-10、TGF-β1的分泌(均P<0.05)。结论凋亡细胞可能通过抑制外周血T淋巴细胞的增殖活化能力,改变不同T细胞亚群细胞因子的分泌调节受体的免疫反应,从而抑制排斥反应,延长移植物存活。
目的:研究預先註射供體來源的凋亡細胞對移植胰島存活時間及外週血T淋巴細胞功能的影響。方法分彆利用直線加速器照射及熱休剋(56℃水浴箱震盪搖1 h)的方法穫取供體凋亡細胞和壞死細胞。利用鏈脲佐菌素(STZ)腹腔註射的方法將接受胰島移植的大鼠42隻誘導為糖尿病模型大鼠後,隨機分為4組,分彆在胰島移植前1週註射生理鹽水(9隻)、正常細胞(12隻)、凋亡細胞(12隻)及壞死細胞(9隻);在註射處理後第7天進行腎包囊下胰島移植。通過血糖變化評估胰島存活時間,併在胰島移植前(註射後1週)、胰島移植後1週、2週以及髮生排斥反應後取3隻大鼠採取外週血,利用四甲基偶氮唑鹽(MTT)法檢測外週血T淋巴細胞的增殖功能;利用多功能流式點陣儀檢測外週血T淋巴細胞亞群細胞因子榦擾素(IFN)-γ、白介素(IL)-10的水平及酶聯免疫方法測定轉化生長因子(TGF)-β1水平。結果凋亡細胞預處理能明顯延長胰島移植物存活時間,併抑製外週血T淋巴細胞對刀豆蛋白A刺激的增殖能力;同時在移植後1週、2週抑製瞭外週血IFN-γ的分泌,而增加瞭IL-10、TGF-β1的分泌(均P<0.05)。結論凋亡細胞可能通過抑製外週血T淋巴細胞的增殖活化能力,改變不同T細胞亞群細胞因子的分泌調節受體的免疫反應,從而抑製排斥反應,延長移植物存活。
목적:연구예선주사공체래원적조망세포대이식이도존활시간급외주혈T림파세포공능적영향。방법분별이용직선가속기조사급열휴극(56℃수욕상진탕요1 h)적방법획취공체조망세포화배사세포。이용련뇨좌균소(STZ)복강주사적방법장접수이도이식적대서42지유도위당뇨병모형대서후,수궤분위4조,분별재이도이식전1주주사생리염수(9지)、정상세포(12지)、조망세포(12지)급배사세포(9지);재주사처리후제7천진행신포낭하이도이식。통과혈당변화평고이도존활시간,병재이도이식전(주사후1주)、이도이식후1주、2주이급발생배척반응후취3지대서채취외주혈,이용사갑기우담서염(MTT)법검측외주혈T림파세포적증식공능;이용다공능류식점진의검측외주혈T림파세포아군세포인자간우소(IFN)-γ、백개소(IL)-10적수평급매련면역방법측정전화생장인자(TGF)-β1수평。결과조망세포예처리능명현연장이도이식물존활시간,병억제외주혈T림파세포대도두단백A자격적증식능력;동시재이식후1주、2주억제료외주혈IFN-γ적분비,이증가료IL-10、TGF-β1적분비(균P<0.05)。결론조망세포가능통과억제외주혈T림파세포적증식활화능력,개변불동T세포아군세포인자적분비조절수체적면역반응,종이억제배척반응,연장이식물존활。
Objective To study the influence of pre-injection of donor apoptotic cells in the survival of islet grafts and the function of T lymphocytes in the peripheral blood. Methods The donor apoptotic cells and necrotic cells were ob-tained respectively by X-irradiation from electron linear accelerator and a heat-shock procedure (water bath box 56℃, 1 h). The diabetic rats for islet transplantation (n=42) were induced by a single intraperitoneal injection of streptozotocin (STZ), then were randomly divided into four groups:rats were injected by physiological saline group (n=9), normal cells group (n=12), apoptotic donor cell group (n=12) and necrotic donor cell group (n=9). On the seventh day, each group received islet transplantation under the renal capsule. The blood glucose level was detected to reflect the survival of the islets. The periph-eral blood samples of three rats in each group were obtained at different observation times. The proliferative activity of T lym-phocytes was determined by MTT method. The levels of cytokines interferon (IFN)-γ, interleukin (IL)-10 in peripheral blood were measured by Luminex 100 Integrated System, and transforming growth factor (TGF)-β1 by ELISA respectively at 0 d, 1 week, 2 weeks and after rejection. Results The survival time of islets was significantly prolonged by the pre-intervention of apoptotic cells, and the proliferative activity of T lymphocytes stimulated by ConA was inhibited. Meanwhile, the extent of the increased level of IFN-γwas inhibited significantly at 1 week and 2 weeks after transplantation (P<0.05), the levels of IL-10 and TGF-β1 were significantly increased before transplantation, 1 week and 2 weeks after transplantation (P<0.05). Conclusion Our results demonstrated that the pre-treatment of donor apoptotic cells can regulate the recipient’s immune reactive state by inhibiting the proliferative activity of T lymphocytes and changing the levels of cytokines from different sub-sets of T lymphocytes, and finally resulted in the prolonging of the survival of islet grafts.