Melatonin alleviates endoplasmic reticulum stress and follicular granulosa cell apoptosis by regulating ATF4 to activate mTOR signaling pathway in chickens

Autor: Er-ying Hao, Xue-lu Liu, Xiang-yu Chen, Han Xue, Bo-fei Su, Yi-fan Chen, De-he Wang, Lei Shi, Kang Bai, Fei Hou, Jian-ku Hou, Hui-ling Bao, Hui Chen
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Poultry Science, Vol 103, Iss 6, Pp 103656- (2024)
Druh dokumentu: article
ISSN: 0032-5791
DOI: 10.1016/j.psj.2024.103656
Popis: ABSTRACT: Follicular atresia in chickens reduces the number of follicles that can further develop, leading to decrease egg laying. Endoplasmic reticulum stress (ERS) can initiate a unique pathway inducing the apoptosis of follicular granulosa cells, thus reducing egg laying. Melatonin (MEL) is involved in the regulation of follicle development, ovulation, and oocyte maturation, and is closely related to follicle fate. Mammalian target of Rapamycin (mTOR) signaling pathway plays an important role in cell growth regulation, and that there is a possible crosstalk between melatonin and mTOR activity in granular cells maturation and ovulation. This study aimed to investigate whether MEL inhibits ERS and follicular granulosa cell apoptosis by regulating ATF4 to activate mTOR signaling pathway in chickens. Frist, we established an in vitro ERS cell model using tunicamycin (TM). The results showed that different concentrations of TM exhibited dose-dependent inhibition of cell activity and induction of granulosa cells (P
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