畜牧兽医学报 ›› 2018, Vol. 49 ›› Issue (11): 2394-2401.doi: 10.11843/j.issn.0366-6964.2018.11.010

• 生物技术与繁殖 • 上一篇    下一篇

牛卵泡颗粒细胞PRSS35表达模式及功能研究

毕锡麟1, 王锴1, 李鹏飞2, 景炅婕1, 韩琦1, 吕丽华1*   

  1. 1. 山西农业大学动物科技学院, 太谷 030801;
    2. 山西农业大学生命科学学院, 太谷 030801
  • 收稿日期:2018-07-16 出版日期:2018-11-23 发布日期:2018-11-23
  • 通讯作者: 吕丽华,E-mail:lihualvsxau@126.com
  • 作者简介:毕锡麟(1991-),男,山西太原人,硕士生,主要从事动物生殖生理研究,E-mail:342864159@qq.com
  • 基金资助:

    山西省回国留学人员科研资助项目(2014-重点5);山西省国际科技合作项目(201603D421006);山西省青年三晋学者项目;山西省重点研发计划(一般)农业项目(201703D221020-1);山西农业大学创新基金项目(zdpy201403/201503)

Expression Profile and Function Analysis of PRSS35 in Bovine Follicle Granulosa Cells

BI Xi-lin1, WANG Kai1, LI Peng-fei2, JING Jiong-jie1, HAN Qi1, LÜ Li-hua1*   

  1. 1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China;
    2. College of Life Sciences, Shanxi Agricultural University, Taigu 030801, China
  • Received:2018-07-16 Online:2018-11-23 Published:2018-11-23

摘要:

旨在探究丝氨酸蛋白酶35(serine protease 35,PRSS35)在牛卵泡颗粒细胞(granulosa cells,GCs)中的表达及功能。采用B超超声波检测确定牛优势卵泡(dominant follicle,DF)与从属卵泡(subordinate follicles,SF),分离优势卵泡与从属卵泡颗粒细胞;利用qRT-PCR和Western blotting技术检测PRSS35在DF与SF的表达情况;免疫组化技术对PRSS35进行定位研究;设计PRSS35 siRNA基因沉默序列,经脂质体转染GCs,测定培养液雌激素(estrogen,E2)浓度和GCs凋亡情况,研究PRSS35对牛卵泡颗粒细胞生长发育的影响。结果表明:1)PRSS35 mRNA在DF中的表达量极显著高于SF (P<0.001);2) PRSS35在牛DF和SF颗粒层与膜层均有表达;3) PRSS35在DF中的表达量极显著高于SF (P<0.01);4)PRSS35基因沉默后,GCs凋亡细胞百分率极显著增高(P<0.001),培养液雌激素浓度极显著降低(P<0.01)。综上表明,PRSS35在牛卵泡颗粒层和膜层均有表达,且在DF表达量极显著高于SF;PRSS35基因沉默后,通过抑制GCs增殖,降低E2分泌浓度,从而抑制牛卵泡的生长发育。该研究为深入探讨PRSS35与牛卵泡发育的关系奠定基础。

Abstract:

The aim of this study was to explore the expression profile and analyze the function of serine protease 35 (PRSS35) in bovine follicular granulosa cells. Cattle dominant follicles (DF) and subordinate follicles (SF) were separated according their sizes measured using B-mode ultrasonography technology. The expression profile of PRSS35 was analyzed using qRT-PCR and Western blotting, and its location in DF and SF was detected by immunohistochemistry. The siRNA sequences of PRSS35 were designed and synthesized and PRSS35-gene-silenced GCs line was obtained. Estrogen (E2) concentration and cell apoptosis were detected through studying the effects of PRSS35 on growth and development of bovine follicular GCs. The results showed that:1) The expression of PRSS35 mRNA in DF was significantly higher than that in SF (P<0.001). 2) The PRSS35 was expressed both in DF and SF granular layer and theca layer. 3) The expression of RSS35 protein in DF was significantly higher than that in SF (P<0.01). 4) When PRSS35 gene was silenced, the percentage of apoptotic GCs was significantly increased (P<0.001), and the concentration of E2 in cell culture media was significantly decreased (P<0.01). The results suggested that PRSS35 was expressed both in bovine follicular granular layer and theca layer, and the PRSS35 expression was significantly higher in DF than that in SF. The proliferation of GCs was inhibited, and the concentration of E2 was reduced when PRSS35 gene was silenced, indicating the growth and development of bovine follicles were inhibited. This study provides a basis for further studying the relationship between PRSS35 and follicular development in cattle.

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