西藏小型猪多组织组蛋白修饰谱研究
作者:
作者单位:

(1. 中国农业科学院深圳农业基因组研究所,广东深圳 518116;2. 南方医科大学实验动物中心,广州 510515;3. 东莞松山湖明珠实验动物科技有限公司,广东东莞523808)

中图分类号:

R-33


Profiling of histone modifications in different tissues of the Tibet minipig
Author:
Affiliation:

(1. Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518116, China.2. Laboratory Animal Center, Southern Medical University, Guangzhou 510515.3. Pearl Lab Animal Sci & Tech Co., Ltd., Dongguan 523808)

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • | |
  • 文章评论
    摘要:

    目的 对西藏小型猪全基因组范围内的组蛋白修饰位点进行注释,并比较不同组织间组蛋白修饰的差异?方法 取三月龄的雄性非同胎西藏小型猪两只,分别取其血液?肝?小肠(回肠段)和背最长肌的组织样本,进行染色质免疫共沉淀实验,捕获DNA 片段进行高通量测序?下机数据经过滤后比对到参考基因组上,并使用MACS 软件统计reads 在基因组上的富集情况?结果 不同组蛋白在基因启动子区域分布的偏好位置不同,分布规律大致分为两类,一类如H3K4me3 组蛋白修饰主要分布在转录起始位点附近的两侧,并在距离TSS 较近的下游位置出现一个宽度较窄的明显的峰值,另一类如H3K9me3 组蛋白修饰在整个启动子区域内分布较为平均,整体呈现出中间低两边高的宽峰形状;组织特异性组蛋白修饰影响的基因存在差异,对应的功能通路比较广泛,但都参与了RNA 聚合酶II 启动子的转录调控?结论 本研究提供了西藏小型猪四种组织的组蛋白修饰注释数据,为今后以西藏小型猪为生物医学模型的转录调控研究提供了基础数据?

    Abstract:

    Objective To perform a genome-wide histone modification profiling of Tibet minipigs and to comparewith the differences in histone modifications in different tissues. Methods Tissue samples of blood, liver, ileum, andmuscle of two three-month-old male Tibet minipigs were collected and used for chromatin immunoprecipitation sequencing.Through quality control, raw data were filtered and compared with the reference genome, then we used MACS software toenrich clean reads in the genome. Results The enrichment positions of different histone modifications differed in the genepromoter region, and the distribution patterns were roughly divided into two types. One type, H3K4me3, was mainlydistributed on both sides near the transcription start site, exhibiting a peak with a narrow range at the downstream position.The second type, H3K9me3, was distributed more evenly throughout the gene promoter, exhibiting a broad peak shape witha low middle and two high sides. Genes affected by the tissue-specific histone modifications differed, and the correspondingfunctional pathways were relatively extensive, but they were all involved in the transcriptional regulation of the RNApolymerase II promoter. Conclusions Our study provides a dataset of histone modification annotations for four types ofdifferent tissues of Tibet minipigs, which will serve as a foundation for future studies using transcriptional regulation of the Tibet minipig as a biomedical animal model.

    参考文献
    相似文献
    引证文献
引用本文

陈娜,刘闻,秦锐,于欣鑫,顾为望,高飞.西藏小型猪多组织组蛋白修饰谱研究[J].中国比较医学杂志,2019,29(5):17~22.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-01-28
  • 在线发布日期: 2019-06-05
防诈骗提示!请勿点击不明链接或添加个人微信。编辑部所有邮箱后缀均为@cnilas.org
关闭