Regulation of proliferation, apoptosis, hormone secretion and gene expression by acetyl-L-carnitine in yak (Bos grunniens) granulosa cells

被引：12
作者：
Jiang, Xu-dong [1 ]
Liu, Yu [1 ]
Wu, Jian-fei [2 ]
Gong, San-ni [1 ]
Ma, Yao [1 ]
Zi, Xiang-dong [1 ,3 ]
机构：
[1] Southwest Minzu Univ, Key Lab Anim Sci Natl Ethn Affairs Commiss, Chengdu 610041, Peoples R China
[2] Zigong Psychiat Res Ctr, Zigong 643020, Peoples R China
[3] Southwest Minzu Univ, Coll Anim & Vet Sci, Chengdu 610041, Peoples R China
来源：
THERIOGENOLOGY | 2023年 / 203卷
关键词：
Acetyl-L-carnitine; Yak; Granulosa cells; Proliferation; Gene expression; IN-VITRO MATURATION; FOLLICULAR DEVELOPMENT; OXIDATIVE STRESS; LIPID-METABOLISM; STEROIDOGENESIS; OOCYTES; ATRESIA; DEATH;
D O I：
10.1016/j.theriogenology.2023.03.016
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Supplementation with acetyl-L-carnitine (ALC) during in vitro maturation significantly improves the rates of oocyte cleavage and morula and blastocyst formation in sheep and buffalo; however, the mode of action of ALC in improving oocyte competence is not completely understood. Therefore, the aim of this study was to investigate the effects of ALC on proliferation, antioxidant properties, lipid droplet accu-mulation and steroid hormone secretion in yak (Bos grunniens) granulosa cells (GCs). Yak GCs were identified using FSHR immunofluorescence. The cells were treated with different concentrations of ALC, cell proliferation was detected by cell counting kit-8, and the optimal concentration and treatment time were determined for subsequent experiments. Then, reactive oxygen species (ROS) were detected by a DCFH-DA probe, and lipid droplet accumulation was observed by oil red O staining. Estradiol (E2) and progesterone (P4) in the medium were detected by ELISA, and the expression of genes related to cell proliferation, apoptosis, the cell cycle, antioxidants and steroid synthesis was determined by RT-qPCR. The results showed that 1 mM ALC treatment for 48 h was the optimum treatment. It significantly increased cell viability (P < 0.05), significantly decreased the amount of ROS and lipid droplet content, and promoted P4 and E2 secretion (P < 0.05) of yak GCs. RT-qPCR results verified that GCs treated with 1 mM ALC for 48 h significantly increased the expression of genes related to anti-apoptosis and the cell cycle (BCL-2, PCNA, CCND1 and CCNB1), antioxidants (CAT, SOD2 and GPX1), and E2 and P4 secretion (StAR, CYP19A1 and HSD3B1) (P < 0.05), but it significantly decreased the expression of apoptosis genes (BAX and P53) (P < 0.05). In conclusion, ALC increased the viability of yak GCs, reduced the amount of ROS and lipid droplets, increased P4 and E2 synthesis and affected the expression of related genes in yak GCs.(c) 2023 Elsevier Inc. All rights reserved.
引用
收藏
页码：61 / 68
页数：8
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