大鼠睾丸间质细胞的原代培养、鉴定与功能监测

目的:采用改良方法对大鼠睾丸间质细胞进行分离、纯化和原代培养,以得到更高纯度和稳定的间质细胞原代培养体系。方法:采用酶消化法分离大鼠睾丸间质细胞,再用Percoll连续密度梯度离心除去生精细胞、支持细胞等杂细胞,实现进一步纯化;用3β-HSD特异性染色法鉴定间质细胞,同时采用放射免疫法测定间质细胞睾酮分泌活性。结果:培养的间质细胞纯度达到95%以上,每个睾丸可获取间质细胞约1×106个;通过3β-HSD特异性染色鉴定,该间质细胞胞质呈蓝黑色,而且细胞具有分泌睾酮的活性。结论:酶消化后以Percoll连续密度梯度离心可分离得到高纯度且具有睾酮分泌活性的间质细胞,操作简单易行,实验方法稳定。

Primary Culture, Identification and Functional Study of Rat Leydig Cells

OBJECTIVE: To set up a stable primary culture system of Leydig cells with higher purity. METHODS: We separated Leydig cells from other testicular cells, such as Sertoli and germ cells, by enzymatic digestion in combination with Percoll density gradient centrifugation and identified Leydig cells by 3beta-HSD staining. RESULTS: The purity achieved by this method was above 95% and the total number of Leydig cells obtained from one testicle was about 1 x 10(6). The cytoplasm of Leydig cells was stained in deep blue by 3beta-HSD staining, and these cells possessed testosterone-secreting capability. CONCLUSION: Leydig cells can be separated by enzymatic digestion combined with Percoll density gradient centrifugation, and 3beta-HSD staining to identify Leydig cells is simple and feasible with high purity.