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CCL20基因短发夹RNA表达载体转染人胚胎肾细胞的干扰效应

RNA interfering effects of CCL20 shRNA expressing vectors on human embryonic kidney cells
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摘要 目的观察人CCL20基因短发夹RNA表达载体(pSCS-EGFP)转染人胚胎肾细胞(293FT细胞),以及对其表达CCL20 mRNA和分泌CCL20蛋白的抑制作用。方法用脂质体转染法把构建成功的3个pSCS-EGFP质粒(其中pSCS-EGFP-1为CCL20基因错配型,pSCS-EGFP-2和pSCS-EGFP-3均为CCL20基因特异型)转染到293FT细胞,24h后分别用荧光显微镜照相和流式细胞仪检测293FT细胞的转染率。将未转染及分别转染3种质粒的293FT细胞培养48h,用TNF-α和IL-1β刺激培养24h后,分别用荧光定量RT-PCR和ELISA法检测CCL20基因mRNA和蛋白的表达水平,计算其抑制率。结果3种质粒(pSCS-EG-FP-1~3)转染293FT细胞的效率分别为(73.8±5.3)%、(50.0±4.8)%、(56.8±2.9)%。加细胞因子刺激下,3种载体对293FT细胞表达CCL20 mRNA相应的抑制率分别为(18.53±34.44)%、(90.40±3.94)%和(92.50±6.15)%;上清中CCL20蛋白相应的抑制率分别为(14.88±17.39)%、(71.76±8.27)%和(88.56±1.74)%。未加细胞因子刺激下,CCL20 mRNA的相应抑制率分别为(61.37±11.72)%、(84.33±12.78)%和(80.27±15.84)%;CCL20蛋白的相应抑制率分别为(19.91±48.12)%、(-27.87±50.24)%和(87.21±8.36)%。结论特异性CCL20shRNA表达载体能明显下调细胞因子刺激人胚胎肾细胞表达CCL20 mRNA及蛋白,该载体为研究肾移植排斥反应等CCL20相关性肾脏疾病的治疗提供了一定的实验基础。 Objective To investigate the inhibiting effects of short hairpin RNA on the expression of CCL20 mRNA and protein in human embryonic kidney cells (293FT cells) by using CCL20 shRNA expressing vectors (pSCS-EGFP). Methods The three previously constructed pSCS-EGFP vectors were used in this study (pSCS-EGFP-1 is CCL20 gene mismatch,while pSCS-EGFP-2 and pSCS-EGFP-3 are CCL20 gene specific). The vectors were transfected into 293FT cells by using liposome,and their transfection rates were observed by inverted fl...
出处 《免疫学杂志》 CAS CSCD 北大核心 2009年第6期642-645,共4页 Immunological Journal
基金 国家重点基础研究发展计划资助项目(2005CB522605) 国家高技术研究发展计划资助项目(2006AA02A121)
关键词 CCL20 RNA干扰 短发夹RNA 293FT细胞 CCL20 RNA interfering short hairpin RNA 293FT cells
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