趙振林 1 , 郭永章 1 , 李立 1 , 張捷 1 , 張瑞 2
  • 1.昆明醫(yī)學院第二附屬醫(yī)院肝膽外科(昆明650101);;
  • 2.山西醫(yī)科大學第二醫(yī)院消化內科(太原030001);

目的探討T細胞疫苗誘導特異性免疫耐受與外周血T細胞凋亡的關系。方法制備針對Wistar大鼠的SD大鼠T細胞疫苗,然后用該疫苗免疫健康SD大鼠,每周1次, 連續(xù)3周,作為實驗組(n=6)。對照組(n=6)用RPMI 1640培養(yǎng)液替代T細胞疫苗。以被免疫的SD大鼠的脾細胞作為反應細胞,以Wistar大鼠的脾細胞作為刺激細胞(經(jīng)絲裂霉素處理),于接種前和每次接種后第5天進行單向混合淋巴細胞反應(3HTDR摻入法),測定其cpm值; 用流式細胞儀對外周血T細胞凋亡情況進行檢測。結果混合淋巴細胞反應結果顯示,實驗組SD大鼠脾細胞免疫應答能力于接種后受到顯著抑制,其cpm值較接種前顯著降低 (P<0.01); 對照組接種前后各時點比較,其差異無顯著性(P gt;0.05); 接種后相同時點的cpm值組間比較, 實驗組顯著低于對照組(P<0.01); 與接種前比較,接種后實驗組外周血T細胞凋亡率顯著增高(P lt;0.01),且隨著疫苗接種次數(shù)的增加而升高,而對照組接種后各時點T細胞凋亡率與接種前比較差異無顯著性(P gt;0.05)。結論T細胞疫苗可以誘導同種特異性免疫耐受,其機理可能是通過誘導外周血T細胞凋亡,清除抗原特異性反應性T細胞克隆來實現(xiàn)的。

引用本文: 趙振林,郭永章,李立,張捷,張瑞. T細胞疫苗誘導免疫耐受與外周血T細胞凋亡的關系探討. 中國普外基礎與臨床雜志, 2003, 10(4): 359-361. doi: 復制

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