Detection of dietetically absorbed maize-derived microRNAs in pigs

文献类型： 外文期刊

第一作者： Wang, Pengjun

作者： Wang, Pengjun;Wang, Xun;Wang, Yuhao;Mu, Zhiping;Li, Qingzhi;Fu, Yuhua;Xiao, Juan;Li, Guojun;Ma, Yao;Jin, Long;Ma, Jideng;Tang, Qianzi;Jiang, Anan;Li, Xuewei;Li, Mingzhou;Mu, Zhiping;Li, Qingzhi;Fu, Yuhua;Gu, Yiren

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： MicroRNAs are a class of small RNAs that are important in post-transcriptional gene regulation in animals and plants. These single-stranded molecules are widely distributed in organisms and influence fundamental biological processes. Interestingly, recent studies have reported that diet-derived plant miRNAs could regulate mammalian gene expression, and these studies have broadened our view of cross-kingdom communication. In the present study, we evaluated miRNA levels in cooked maizecontaining chow diets, and found that plant miRNAs were resistant to the harsh cooking conditions to a certain extent. After feeding fresh maize to pigs (7 days), maize-derived miRNAs could be detected in porcine tissues and serum, and the authenticity of these plant miRNAs was confirmed by using oxidization reactions. Furthermore, in vivo and in vitro experiments demonstrated that dietary maize miRNAs could cross the gastrointestinal tract and enter the porcine bloodstream. In the porcine cells, we found that plant miRNAs are very likely to specifically target their endogenous porcine mRNAs and influence gene expression in a fashion similar to that of mammalian miRNAs. Our results indicate that maize-derived miRNAs can cross the gastrointestinal tract and present in pigs, and these exogenous miRNAs have the potential to regulate mammalian gene expression.

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