Publication date: 1 March 2018
Source:Gene, Volume 645
Author(s): Chun Yang, Yan Zhang, Wenyuan Liu, Xiao Lu, Chunyi Li
DNA methylation plays an important role in regulating gene expression during tissue development and differentiation in eukaryotes. In contrast to domestic animals, epigenetic studies have been seldom conducted in wild animals. In the present study, we conducted the genome-wide profiling of DNA methylation for five tissues of sika deer using the fluorescence-labeled methylation-sensitive amplified polymorphism (F-MSAP) technique. Overall, a total of 104,131 fragments were amplified including 41,951 methylated fragments using 32 pairs of selected primers. The average incidence of DNA methylation was approximately 38.18% in muscle, 40.32% in heart, 41.86% in liver, 41.20% in lung, and 41.68% in kidney, respectively. Also, the significant differences of the DNA methylation levels were found between the different tissue types (P<0.05), which indicates that the differences of genome-wide DNA methylation levels may be related to gene expression during tissue development and differentiation. In addition, 37 tissue-specific differentially methylated regions (T-DMRs) were identified and recovered by MSAP in five tissues, and were further confirmed by Southern blot analysis. Our study presents the first look at the T-DMRs in sika deer and represents an initial step towards understanding of epigenetic regulatory mechanism underlying tissue development and differentiation in sika deer.
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