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Lab Invest:视网膜相关孤核受体α(RORα)缺陷表现出睾丸形态缺陷

2019-08-27 AlexYang MedSci原创

视网膜相关孤核受体(已报道的睾丸中转录因子)在睾丸功能中的作用仍旧不清楚。最近,有研究人员在RORα缺陷小鼠中,使用光学、电子显微镜和免疫组化染色对睾丸结构的变化进行了定性和定量分析。研究发现,变异小鼠睾丸中最为明显的变化包括生殖功能低下,间质组织体积比例和间质细胞数量明显减少,生精管直径和上皮高度显著减少,生精小管上皮空泡化,肥大细胞出现,精子出现延迟征象以及精子形态发生变化。更多的是,突变小鼠

视网膜相关孤核受体(已报道的睾丸中转录因子)在睾丸功能中的作用仍旧不清楚。最近,有研究人员在RORα缺陷小鼠中,使用光学、电子显微镜和免疫组化染色对睾丸结构的变化进行了定性和定量分析。

研究发现,变异小鼠睾丸中最为明显的变化包括生殖功能低下,间质组织体积比例和间质细胞数量明显减少,生精管直径和上皮高度显著减少,生精小管上皮空泡化,肥大细胞出现,精子出现延迟征象以及精子形态发生变化。更多的是,突变小鼠的睾丸除了表现出多核巨溴酚阳性细胞外,还出现了合胞体。ATP酶活性仅仅在精原细胞和一些初级精母细胞中存在,且碱性磷酸酶表达增高。另外,波形蛋白对精原细胞、精子细胞、间质细胞和支持细胞具有较强的免疫定位作用。CD117的表达受限于精原细胞、初级精母细胞和间质细胞。输精管中血管内皮生长因子(VEGF)表现出过表达。突变小鼠的投射电镜阐释了存在支持细胞异常、精原细胞肥大、精母细胞线粒体退化和精子发育不完全情况。

最后,研究人员指出,RORα是调节睾丸结构的必要蛋白之一。

原始出处:

Ramy K. A. Sayed, Doaa M. Mokhtar, Marisol Fernández-Ortiz et al. Retinoid-related orphan nuclear receptor alpha (RORα)-deficient mice display morphological testicular defects. Lab Invest. 13 Aug 2019

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    2020-01-30 ysjykql
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    2019-08-29 zutt
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    2019-08-29 zhangph

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