【摘要】 用γ-IFN、淋巴细胞条件培养液(LCM)对培养的人主动脉平滑肌细胞(SMC)进行诱导,观察其是否异常表达DR、DP抗原,以探讨在动脉粥样硬化(AS)发病中的意义。结果表明,γ-IFN组DR、DP阳性率分别为80%和73%;LCM组DR、DP阳性率为74%和70%。两组均明显高于正常对照组DR、DP的阳性率(11%,7%)。提示激活的T淋巴细胞通过分泌γ-IFN(或合并其它因子)诱导SMC异常表达DR、DP抗原,可能在AS的发生发展中起一定作用。更多还原

【Abstract】 To observe whether human aortic smooth muscle cells (SMC) may expressHLA-DR and DP antigens, we used γ-IFN and lymphocytes conditioned media (LCM) to induce SMC in vitro. The results showed that γ-IFN increased HLA-DR and HLA-DP expression on SMC by 80% and 73%, and LCM did so by 74% and 70% respec-tively. HLA-DR and DP (11% and 7%) in both groups were significantly higher thanthat of the control group. These results suggested that activated T lymphocytes may in-crease HLA-DR and HLA-DP antigens expression on human SMC by secreating γ-IFN (orwith other cytokines), which may play certain important roles in atherogenesis.更多还原