The specific expression of heat-shock protein 70-2 during spermatogenesis in rat
Author(s): CHENG Yi-ming, SHI Xin-quan, YU He-ming, WU Yan-wan, JIA Meng-chun
Pages: 346-351
Year: 2005 Issue: 6
Journal: JOURNAL OF REPRODUCTIVE MEDICINE
Keyword: 热休克70-2蛋白; 双向电泳; 精子发生; 质谱分析; 免疫组织化学;
Abstract: 目的运用蛋白质组学方法,寻找大鼠精子发生相关蛋白质,找到目标蛋白质后,进一步用免疫组织化学方法做定位研究.方法用重力沉降法(STAPUT法)从9 d龄雄性大鼠睾丸中分离出A型精原细胞,从成年的雄性大鼠睾丸中分离出粗线期精母细胞、圆形精子细胞.分别提取这3种细胞的总蛋白质,进行双向电泳.对所得双向电泳凝胶扫描,分析并找出差异蛋白质.对挑选出的差异蛋白质做质谱分析,发现在这3种不同细胞的表达上有明显差异的蛋白.进一步做睾丸免疫组织化学组织定位、定量研究.结果双向电泳结果显示,HSP70-2在粗线期精母细胞、圆形精子细胞中表达量较高,在A型精原细胞则表达量极少.HSP70-2在粗线期精母细胞中表达量最大.用HSP70-2抗体对大鼠睾丸组织切片行免疫组织化学研究,发现粗线期精母细胞、Sertoli细胞、Leydig细胞有阳性颗粒反应.HSP70-2主要表达于细胞质. 结论HSP70-2在精子发生过程中有明显的差异表达,推测其对精子发生起重要调节作用.
Pages: 346-351
Year: 2005 Issue: 6
Journal: JOURNAL OF REPRODUCTIVE MEDICINE
Keyword: 热休克70-2蛋白; 双向电泳; 精子发生; 质谱分析; 免疫组织化学;
Abstract: 目的运用蛋白质组学方法,寻找大鼠精子发生相关蛋白质,找到目标蛋白质后,进一步用免疫组织化学方法做定位研究.方法用重力沉降法(STAPUT法)从9 d龄雄性大鼠睾丸中分离出A型精原细胞,从成年的雄性大鼠睾丸中分离出粗线期精母细胞、圆形精子细胞.分别提取这3种细胞的总蛋白质,进行双向电泳.对所得双向电泳凝胶扫描,分析并找出差异蛋白质.对挑选出的差异蛋白质做质谱分析,发现在这3种不同细胞的表达上有明显差异的蛋白.进一步做睾丸免疫组织化学组织定位、定量研究.结果双向电泳结果显示,HSP70-2在粗线期精母细胞、圆形精子细胞中表达量较高,在A型精原细胞则表达量极少.HSP70-2在粗线期精母细胞中表达量最大.用HSP70-2抗体对大鼠睾丸组织切片行免疫组织化学研究,发现粗线期精母细胞、Sertoli细胞、Leydig细胞有阳性颗粒反应.HSP70-2主要表达于细胞质. 结论HSP70-2在精子发生过程中有明显的差异表达,推测其对精子发生起重要调节作用.
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