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RNA helicase DExD/H-box 5 modulates intestinal microbiota in mice

文献类型： 外文期刊

作者： Liu, Liyuan 1 ; Zhang, Silan 3 ; Zhi, Feijie 2 ; Song, Yinjuan 2 ; Li, Bin 2 ; Gao, Pengchen 2 ; Zhang, Ying 2 ; Ma, Ke 2 ; Xu, Jian 2 ; Jiang, Bo 4 ; Chu, Yuefeng 2 ; Li, Yongqing 4 ; Qin, Jianhua 1 ;

作者机构： 1.Hebei Agr Univ, Coll Vet Med, Baoding 071001, Hebei, Peoples R China

2.Lanzhou Univ, Lanzhou Vet Res Inst, Chinese Acad Agr Sci, Coll Vet Med,State Key Lab Vet Etiol Biol, Lanzhou 730046, Gansu, Peoples R China

3.Xinjiang Agr Univ, Coll Vet Med, Urumqi 830091, Xinjiang, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Inst Anim Husb & Vet Med, Beijing 100097, Peoples R China

关键词： RNA helicase DExD; H-box 5; Intestinal microbiota; Akkermansia; Clostridium_sensu_stricto_1; Mice

期刊名称：MICROBIAL PATHOGENESIS （ 影响因子：3.8； 五年影响因子：4.0 ）

ISSN： 0882-4010

年卷期： 2023 年 182 卷

页码：

收录情况： SCI

摘要： The RNA helicase DExD/H-box (DDX) family of proteins plays a central role in host cellular RNA metabolism, including mRNA regulation, microRNA biogenesis, and ribosomal processing. DDX5, also known as p68, pro-motes viral replication and tumorigenesis. However, there have been no studies on the regulation of the intes-tinal microbiota by DDX family proteins. We constructed DDX5 knockout mice (Ddx5+/-) using CRISPR/CAS9 technology. Subsequently, DDX5 knockout mice were analyzed for PCR products, mRNA levels, protein expression, immunohistochemistry, and histopathological lesions. Fecal (n = 12) and ileum (n = 12) samples were collected from the Ddx5+/-and wild-type (Ddx5+/+) mice. The diversity, richness, and structural sepa-ration of the intestinal microbiota of the Ddx5+/-and Ddx5+/+ mice were determined by 16S rRNA sequencing and analysis. Ddx5+/-mice were successfully established, and the ileum had normal morphology, a clear layer of tissue structures, and neatly arranged cupped cells. DDX5 knockout mice did not exhibit adverse effects on the ileal tissue. Microbial diversity and abundance were not significantly different, but the microbial structure of the intestinal microbiota was clustered separately between Ddx5+/+ and Ddx5+/-mice. Furthermore, we found that the relative abundance of Akkermansia and Clostridium_sensu_stricto_1 in the Ddx5+/-mice was significantly lower than in the Ddx5+/+ mice. These analyses indicated specific interactions between the intestinal microbiota and DDX5 protein. Our results indicate that DDX5 has a significant effect on the composition of the intestinal microbiota in mice, suggesting its potential as a promising novel target for the treatment of inflammation and tumorigenesis in the intestine.

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