Short-chain fatty acid-butyric acid ameliorates granulosa cells inflammation through regulating METTL3-mediated N6-methyladenosine modification of FOSL2 in polycystic ovarian syndrome

被引:34
作者
Liu, Kailu [1 ]
He, Xi [2 ]
Huang, Jingyu [1 ]
Yu, Simin [1 ]
Cui, Meiting [1 ]
Gao, Mengya [1 ]
Liu, Li [1 ]
Qian, Yu [1 ]
Xie, Ying [1 ]
Hui, Miao [1 ]
Hong, Yanli [1 ]
Nie, Xiaowei [1 ]
机构
[1] Nanjing Univ Chinese Med, Jiangsu Prov Hosp Chinese Med, Affiliated Hosp, Dept Reprod Med, Nanjing 210029, Peoples R China
[2] Nanjing Univ Chinese Med, Dept Human Anat & Histoembryol, Nanjing 210023, Peoples R China
基金
中国国家自然科学基金;
关键词
PCOS; Gut microbiome; Butyric acid; Inflammation; m6A modification; GUT MICROBIOTA; OBESITY; PCOS; DIAGNOSIS;
D O I
10.1186/s13148-023-01487-9
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Polycystic ovary syndrome (PCOS) is an endocrine and metabolic disorder characterized by chronic low-grade inflammation. Previous studies have demonstrated that the gut microbiome can affect the host tissue cells' mRNA N6-methyladenosine (m6A) modifications. This study aimed to understand the role of intestinal flora in ovarian cells inflammation by regulating mRNA m6A modification particularly the inflammatory state in PCOS. The gut microbiome composition of PCOS and Control groups was analyzed by 16S rRNA sequencing, and the short chain fatty acids were detected in patients' serum by mass spectrometry methods. The level of butyric acid was found to be decreased in the serum of the obese PCOS group (FAT) compared to other groups, and this was correlated with increased Streptococcaceae and decreased Rikenellaceae based on the Spearman's rank test. Additionally, we identified FOSL2 as a potential METTL3 target using RNA-seq and MeRIP-seq methodologies. Cellular experiments demonstrated that the addition of butyric acid led to a decrease in FOSL2 m6A methylation levels and mRNA expression by suppressing the expression of METTL3, an m6A methyltransferase. Additionally, NLRP3 protein expression and the expression of inflammatory cytokines (IL-6 and TNF-alpha) were downregulated in KGN cells. Butyric acid supplementation in obese PCOS mice improved ovarian function and decreased the expression of local inflammatory factors in the ovary. Taken together, the correlation between the gut microbiome and PCOS may unveil crucial mechanisms for the role of specific gut microbiota in the pathogenesis of PCOS. Furthermore, butyric acid may present new prospects for future PCOS treatments.
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页数:18
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