Profiling the genome-wide DNA methylation pattern of porcine ovaries using reduced representation bisulfite sequencing

文献类型： 外文期刊

第一作者： Yuan, Xiao-Long

作者： Yuan, Xiao-Long;Gao, Ning;Xing, Yan;Zhang, Hai-Bin;Liu, Jing;He, Jin-Long;Xu, Yuan;Chen, Zan-Mou;Zhang, Hao;Zhang, Zhe;Li, Jia-Qi;Zhang, Ai-Ling;Lin, Wen-Mian

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： 2016 年 6 卷

页码：

收录情况： SCI

摘要： Substantial evidence has shown that DNA methylation regulates the initiation of ovarian and sexual maturation. Here, we investigated the genome-wide profile of DNA methylation in porcine ovaries at single-base resolution using reduced representation bisulfite sequencing. The biological variation was minimal among the three ovarian replicates. We found hypermethylation frequently occurred in regions with low gene abundance, while hypomethylation in regions with high gene abundance. The DNA methylation around transcriptional start sites was negatively correlated with their own CpG content. Additionally, the methylation level in the bodies of genes was higher than that in their 5' and 3' flanking regions. The DNA methylation pattern of the low CpG content promoter genes differed obviously from that of the high CpG content promoter genes. The DNA methylation level of the porcine ovary was higher than that of the porcine intestine. Analyses of the genome-wide DNA methylation in porcine ovaries would advance the knowledge and understanding of the porcine ovarian methylome.

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