摘要:目的探讨血管生成抑制因子vasostatin-1(VS-1)对缺氧复氧肾小管上皮细胞的炎性损伤作用及机制。方法采用缺氧复氧方式制造肾小管上皮细胞炎性损伤。构建慢病毒载体并以脂质体法将shVS-1转染NRK-52E细胞。ELISA法检测细胞中LDH和IL-1β含量;Western blot检测细胞中VS-1、pro-caspase-1和caspase-1蛋白表达。结果与对照组相比,缺氧复氧组细胞LDH和IL-1β含量显著升高,且VS-1蛋白表达显著升高。成功构建沉默VS-1的慢病毒载体,且转染缺氧复氧NRK-52E细胞,可降低细胞中LDH和IL-1β含量、降低caspase-1蛋白表达,过表达VS-1则具有相反的功能。结论沉默VS-1可保护缺氧复氧肾小管上皮细胞的炎性损伤,可能与下调caspase-1有关,可为急性肾损伤的临床治疗提供依据。
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