MYH1G-AS是一种与染色质相关的lncRNA,它调节了肉骨肌肉的发育
Bolin Cai1,2, Manting Ma1,2, Rongshuai Yuan1,2
1State Key Laboratory of Livestock and Poultry Breeding, Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou, China.
Cellular & molecular biology letters
|January 4, 2024
概括
这项研究确定了MYH1G-AS,一种新的长非编码RNA (lncRNA),通过影响肌细胞增殖,分化和纤维类型来调节骨肌肉发育. MYH1G-AS影响染色质可访问性和蛋白质相互作用,揭示了肌肉生物学中的新调节机制.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
背景情况:
- 骨肌肉的发育对于整体动物健康至关重要.
- 长非编码RNAs (lncRNAs) 越来越多地被认为是它们在染色质调节中的作用.
- 染色质相关 lncRNAs 在骨肌肉发育中的特定功能在很大程度上仍未被探索.
研究的目的:
- 研究染色质关联RNA MYH1G-AS在骨肌肉发育中的调节作用.
- 阐明MYH1G-AS调节和功能背后的分子机制.
- 了解 lncRNAs,表观遗传学和肌肉可塑性之间的相互作用.
主要方法:
- 结合RNA测序 (RNA-seq) 和ATAC-seq以分析RNA和肌纤维中的染色质可访问性.
- 使用双露西法酶记者和ChIP测试来确定转录调节.
- 采用SELECT,反感性寡核酸 (ASO) 介导的动物模型,RNA下拉,RIP,共免疫沉和酵母两种混合试验来研究分子相互作用和功能.
主要成果:
- 确定了MYH1G-AS作为一种与开放色素相关的骨肌特异性lncRNA.
- MYH1G-AS的表达受到SMAD3和SP2的调节,SP2通过m6A脱甲基化影响其稳定性.
- MYH1G-AS促进肌细胞增殖,抑制分化,驱动慢到快的抽纤维过渡,并通过影响FGF18/SMARCA5相互作用和SMAD4促进器可访问性来诱导肌肉缩.
结论:
- MYH1G-AS代表了 lncRNA 表达的新型调节模式.
- 这些发现阐明了m6A甲基化对染色质状态和骨肌肉发育的影响.
- 这项研究为控制肌肉可塑性和缩的分子机制提供了新的见解.
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