TGF-β1在大鼠睾丸支持细胞的作用及对紧密连接的影响
发布时间:2018-08-18 18:20
【摘要】:目的:探讨TGF-β1在大鼠睾丸支持细胞增殖和凋亡中的作用以及对紧密连接相关蛋白基因表达的影响。方法:体外分离和培养大鼠睾丸支持细胞,分空白对照组、TGF-β1受体阻滞剂组、TGF-β1刺激组和TGF-β1+受体阻滞剂组共4组。CCK-8检测细胞增殖;流式细胞术检测细胞凋亡;建立支持细胞原代双室培养模型,应用跨上皮电阻测定法(TER)检测单层细胞两侧跨细胞电阻值;RT-PCR和Western印迹检测支持细胞闭合蛋白(Occludin)、闭锁小带蛋白1(ZO-1)和紧密连接蛋白Ⅱ(ClaudinⅡ)的相对表达量。结果:各组细胞增殖组间差异有统计学意义(F=5.05,P0.05),TGF-β1刺激组与空白对照组相比细胞增殖率增加(P0.05),而TGF-β1+受体阻滞剂组与TGF-β1刺激组相比细胞增殖率降低(P0.05)。各组细胞凋亡率组间差异无统计学意义(F=1.13,P0.05);各组细胞间TER差异有统计学意义(F=38.99,P0.01),与空白对照组比较TGF-β1刺激组TER降低(P0.01),与TGF-β1刺激组比较,TGF-β1+受体阻滞剂组和TGF-β1受体阻滞剂组细胞TER升高(P均0.01);各组支持细胞中ZO-1、ClaudinⅡmRNA及蛋白在各组中的表达量差异均无统计学意义(F_(mRNA)=0.49,0.93,P均0.05;F_(蛋白)=0.28,1.31,P均0.05),而Occludin mRNA及蛋白在各组中的表达量差异均有统计学意义(F_(mRNA)=6.86,F_(蛋白)=6.87,P均0.05);与空白对照组相比,TGF-β1刺激组Occludin mRNA及蛋白表达明显降低(P均0.01),而加入受体阻滞剂后,Occludin mRNA及蛋白表达明显回升(P均0.05)。结论:TGF-β1对睾丸支持细胞的增殖有促进作用,并能通过调节Occludin蛋白的表达而影响大鼠支持细胞间的紧密连接。
[Abstract]:Aim: to investigate the role of TGF- 尾 1 in proliferation and apoptosis of rat testicular Sertoli cells and the effect of TGF- 尾 1 on the expression of tight junction associated protein gene. Methods: rat testicular Sertoli cells were isolated and cultured in vitro. TGF- 尾 1 receptor blocker group and TGF- 尾 1 receptor blocker group were divided into 4 groups: CCK-8, TGF- 尾 1 receptor blocker group, flow cytometry to detect cell apoptosis, and TGF- 尾 1 receptor blocker group, TGF- 尾 1 receptor blocker group and TGF- 尾 1 receptor blocker group. The primary double compartment culture model of Sertoli cells was established. Transdermal resistance assay (TER) was used to detect the relative expression of closed cell protein (Occludin), (ZO-1) and tight junction protein 鈪,
本文编号:2190299
[Abstract]:Aim: to investigate the role of TGF- 尾 1 in proliferation and apoptosis of rat testicular Sertoli cells and the effect of TGF- 尾 1 on the expression of tight junction associated protein gene. Methods: rat testicular Sertoli cells were isolated and cultured in vitro. TGF- 尾 1 receptor blocker group and TGF- 尾 1 receptor blocker group were divided into 4 groups: CCK-8, TGF- 尾 1 receptor blocker group, flow cytometry to detect cell apoptosis, and TGF- 尾 1 receptor blocker group, TGF- 尾 1 receptor blocker group and TGF- 尾 1 receptor blocker group. The primary double compartment culture model of Sertoli cells was established. Transdermal resistance assay (TER) was used to detect the relative expression of closed cell protein (Occludin), (ZO-1) and tight junction protein 鈪,
本文编号:2190299
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