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Inhibin A regulates follicular development via hormone secretion and granulosa cell behaviors in laying hens
Cell and Tissue Research ( IF 3.2 ) Pub Date : 2020-05-06 , DOI: 10.1007/s00441-020-03207-8
Zhifu Cui 1 , Lingbin Liu 2 , Qing Zhu 1 , Yan Wang 1 , Huadong Yin 1 , Diyan Li 1 , Yaofu Tian 1 , Gang Shu 3 , Xiaoling Zhao 1, 4
Affiliation  

Inhibin A regulates follicular development, and its expression level is related to physiological activities, such as the recruitment, selection, and predominance during follicular development. Therefore, examining inhibin A and its regulatory effects on the reproductive performance of poultry is crucial. In this study, we measured the mRNA and protein abundances of INHA and INHBA in the chicken reproductive system and determined the hormone secretion and apoptosis of follicular granulosa cells (GCs) after being treated with inhibin A protein, and flow cytometry was performed to analyze GC apoptosis in INHA-specific small RNA interference (siRNA). We detected that INHA and INHBA were mainly expressed in chicken follicles. The highest INHA mRNA abundance was found in the fifth largest preovulatory follicle (F5) (P < 0.05). INHBA mRNA expression in the largest preovulatory follicle (F1) was significantly higher than those in other follicles (P < 0.05). Similar results were found for INHA and INHBA protein expression in those follicles (P < 0.05). Treatment with inhibin A protein increased the activity of GCs in a dose-dependent manner (P < 0.05), which was characterized by decreased gene expression of pro-apoptotic factors Bax and Caspase-3 (P < 0.05) and increased expression of proliferation genes Bcl-2 and PCNA (P < 0.05). Additionally, inhibin A significantly increased the secretion of progesterone and estradiol (P < 0.05). RNAi-mediated knockdown of INHA increased apoptosis in GCs via a Caspase-3-dependent mitochondrial pathway.

中文翻译:

抑制素 A 通过激素分泌和颗粒细胞行为调节蛋鸡的卵泡发育

抑制素A调控卵泡发育,其表达水平与卵泡发育过程中的募集、选择和优势等生理活动有关。因此,检查抑制素 A 及其对家禽繁殖性能的调节作用至关重要。本研究通过测定鸡生殖系统中INHA和INHBA的mRNA和蛋白丰度,测定抑制素A蛋白处理后卵泡颗粒细胞(GCs)的激素分泌和凋亡情况,并通过流式细胞术分析GC INHA 特异性小 RNA 干扰 (siRNA) 中的细胞凋亡。我们检测到INHA和INHBA主要在鸡卵泡中表达。在第五大排卵前卵泡 (F5) 中发现了最高的 INHA mRNA 丰度 (P < 0.05)。INHBA mRNA 在最大排卵前卵泡(F1)中的表达显着高于其他卵泡(P < 0.05)。发现这些卵泡中 INHA 和 INHBA 蛋白表达的结果相似(P < 0.05)。抑制素A蛋白处理以剂量依赖性方式增加GCs的活性(P < 0.05),其特征是促凋亡因子Bax和Caspase-3的基因表达降低(P < 0.05)和增殖基因的表达增加Bcl-2 和 PCNA (P < 0.05)。此外,抑制素A显着增加孕酮和雌二醇的分泌(P < 0.05)。RNAi 介导的 INHA 敲低通过 Caspase-3 依赖性线粒体途径增加了 GC 的细胞凋亡。发现这些卵泡中 INHA 和 INHBA 蛋白表达的结果相似(P < 0.05)。抑制素A蛋白处理以剂量依赖性方式增加GCs的活性(P < 0.05),其特征是促凋亡因子Bax和Caspase-3的基因表达降低(P < 0.05)和增殖基因的表达增加Bcl-2 和 PCNA (P < 0.05)。此外,抑制素A显着增加孕酮和雌二醇的分泌(P < 0.05)。RNAi 介导的 INHA 敲低通过 Caspase-3 依赖性线粒体途径增加了 GC 的细胞凋亡。发现这些卵泡中 INHA 和 INHBA 蛋白表达的结果相似(P < 0.05)。抑制素A蛋白处理以剂量依赖性方式增加GCs的活性(P < 0.05),其特征是促凋亡因子Bax和Caspase-3的基因表达降低(P < 0.05)和增殖基因的表达增加Bcl-2 和 PCNA (P < 0.05)。此外,抑制素A显着增加孕酮和雌二醇的分泌(P < 0.05)。RNAi 介导的 INHA 敲低通过 Caspase-3 依赖性线粒体途径增加了 GC 的细胞凋亡。其特点是促凋亡因子 Bax 和 Caspase-3 基因表达降低(P < 0.05),增殖基因 Bcl-2 和 PCNA 表达增加(P < 0.05)。此外,抑制素A显着增加孕酮和雌二醇的分泌(P < 0.05)。RNAi 介导的 INHA 敲低通过 Caspase-3 依赖性线粒体途径增加了 GC 的细胞凋亡。其特点是促凋亡因子 Bax 和 Caspase-3 基因表达降低(P < 0.05),增殖基因 Bcl-2 和 PCNA 表达增加(P < 0.05)。此外,抑制素A显着增加孕酮和雌二醇的分泌(P < 0.05)。RNAi 介导的 INHA 敲低通过 Caspase-3 依赖性线粒体途径增加了 GC 的细胞凋亡。
更新日期:2020-05-06
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