Acta Veterinaria et Zootechnica Sinica ›› 2025, Vol. 56 ›› Issue (9): 4708-4717.doi: 10.11843/j.issn.0366-6964.2025.09.047

• Clinical Veterinary Medicine • Previous Articles     Next Articles

The Influence of FoxO1 on Expression of Apoptotic Factors in Dairy Cow Endometrial Epithelial Cells Induced by High NEFA Levels

LIU Jiajin(), WEN Xiaoqing, LUO Chunhai, JIA Hongdou, WANG Wei, LI Danyang, FU Shixin*()   

  1. College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
  • Received:2024-11-18 Online:2025-09-23 Published:2025-09-30
  • Contact: FU Shixin E-mail:1304768044@qq.com;fushixin@163.com

Abstract:

Changes in the expression of apoptotic factors in endometrial epithelial cells of dairy cows in the state of high concentration of non-esterified fatty acids (NEFA) were explored to be influenced by forkhead box protein O1 (FoxO1). The effect of silent information regulator 1 (SIRT1) expression was evaluated by real-time fluorescence quantitative PCR and Western blot after the addition of the activator resveratrol (Resveratrol), the expression profile of FoxO1 was clarified in the endometrial epithelial cells of dairy cows. Changes in the expression of key factors of the FoxO1 pathway and apoptosis-associated factor proteins were examined after the addition of Resveratrol and high concentrations of NEFA. The protein and mRNA expression levels of SIRT1 were up-regulated (P < 0.01) and Ac-FoxO1 protein expression levels were down-regulated (P < 0.01) by the addition of Resveratrol compared with the control group; Caspase-3 protein expression levels were not significantly affected, showing a down-regulation trend but not statistically different (P>0.05); the protein expression levels of Bcl-2 and Bcl-xl were up-regulated (P < 0.01); the protein expression levels of Bax and Bax/Bcl-2 were down-regulated (P < 0.05). Compared with the NEFA group, in the NEFA+Resveratrol group, IGF-1, SIRT1 and p-AKT protein expression levels were up-regulated (P < 0.01); FoxO1, p-FoxO1, Ac-FoxO1, FoxO1/p-FoxO1, AKT and AKT/p-AKT protein expression levels were down-regulated (P < 0.01). Bcl-xl and Bcl-2 protein expression levels were upregulated (P < 0.01), Caspase-3, Bax and Bax/Bcl-2 protein expression levels were downregulated (P < 0.01). The results of laser confocal assay showed that the expression level of FoxO1 was suppressed in the NEFA+Resveratrol group compared with the NEFA group (P < 0.01). SIRT1 expression can be effectively activated by Resveratrol, FoxO1 expression was suppressed, and the expression level of apoptotic factors in the endometrial epithelial cells of dairy cows was reduced in the state of high concentration of NEFA.

Key words: bovine endometrial epithelial cells, non-esterified fatty acids, silent information regulator 1, forkhead box protein O1, apoptosis factors

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