染色质可访问性和转录景观的综合分析确定了猪肌肉发育过程中的关键基因
Dongjie Zhang1, Qian Zhang2, Xiaoxu Wu2
1Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China.
Cells
|January 8, 2025
概括
这项研究揭示了猪骨肌肉发育的关键表观遗传调节剂. 它识别了关键的基因和转录因子,包括KLF5,通过动态色素可访问性变化控制肌肉生长.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 动物科学动物科学
背景情况:
- 骨肌肉发育对于动物的生产力至关重要.
- 了解表观遗传机制,特别是染色质可访问性,对于调节肌肉生长期间的基因表达至关重要.
- 目前关于骨肌肉发育中的动态色素可访问性变化的知识是有限的.
研究的目的:
- 调查在Min猪骨肌肉发育期间染色质可访问性的动态变化.
- 识别关键的基因,转录因子和参与肌肉发育的调节区域.
- 阐明已识别的调节元件和转录因子的功能作用.
主要方法:
- 用高通量测序 (ATAC-seq) 检测转化酶可访问的染色质,以分析染色质可访问性.
- RNA测序 (RNA-seq) 用于识别差异表达的基因.
- ATAC-seq和RNA-seq数据的综合分析.
- 分子生物学技术通过转录因子验证基因调节.
主要成果:
- 在不同发育阶段确定了16,301个差异可访问区域 (DAR) 和7,455个相关基因.
- 在8个测试的DAR中,有7个显著调节了记者基因表达.
- 确定了2,219个差异表达基因 (DEGs).
- 54个DEG_DAR_基因和61个转录因子 (TF) 被认为是肌肉发育的关键.
- 克鲁佩尔样因子5 (KLF5) 被确定为一个关键的TF,调节多个基因,包括SLPI和APOA1.
结论:
- 染色质可访问性的动态变化在骨肌肉发育中起着重要作用.
- 关键的转录因子,如KLF5,对于调节肌肉生长过程中的基因表达至关重要.
- 鉴定的调节区域,TF和基因为猪肌肉发育的表观遗传调节提供了新的见解.
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