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Faecal microbiota transplantation-mediated jejunal microbiota changes halt high-fat diet-induced obesity in mice via retarding intestinal fat absorption |
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| Authors: | Luoyi Zhu Jie Fu Xiao Xiao Fengqin Wang Mingliang Jin Weihuan Fang Yizhen Wang Xin Zong |
| Institution: | 1. National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling, National Development and Reform Commission, Hangzhou, Zhejiang, 310058 China
Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, Zhejiang, 310058 China Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, Zhejiang, 310058 China Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, Zhejiang, 310058 China;2. Zhejiang University Institute of Preventive Veterinary Medicine, Hangzhou, Zhejiang, 310058 China Zhejiang Provincial Key Laboratory of Preventive Veterinary Medicine, Hangzhou, Zhejiang, 310058 China;3. National Engineering Laboratory for Feed Safety and Pollution Prevention and Controlling, National Development and Reform Commission, Hangzhou, Zhejiang, 310058 China |
| Abstract: | Faecal Microbiota Transplantation (FMT) is considered as a promising technology to fight against obesity. Wild boar has leanermuscle and less fat in comparison to the domestic pig, which were thought to be related with microbiota. To investigate the function and mechanism of the wild boar microbiota on obesity, we first analysed the wild boar microbiota composition via 16S rDNA sequencing, which showed that Firmicutes and Proteobacteria were the dominant bacteria. Then, we established a high-fat diet (HFD)-induced obesity model, and transfer low and high concentrations of wild boar faecal suspension in mice for 9 weeks. The results showed that FMT prevented HFD-induced obesity and lipid metabolism disorders, and altered the jejunal microbiota composition especially increasing the abundance of the Lactobacillus and Romboutsia, which were negatively correlated with obesity-related indicators. Moreover, we found that the anti-obesity effect of wild boar faecal suspension was associated with jejunal N6-methyladenosine (m6A) levels. Overall, these results suggest that FMT has a mitigating effect on HFD-induced obesity, which may be due to the impressive effects of FMT on the microbial composition and structure of the jejunum. These changes further alter intestinal lipid metabolism and m6A levels to achieve resistance to obesity. |
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