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通过纳米孔直接RNA测序揭示了跨多种猪组织的转录组范围的m6A景观
Yaya Liao1, Zifeng Ding1, Xiaoyun Chen1
1National Key Laboratory for Pig Genetic Improvement and Germplasm Innovation, Ministry of Science and Technology, Jiangxi Agricultural University, Nanchang, China.
Frontiers in genetics
|December 8, 2025
概括
这项研究在23个猪组织中绘制了N6-甲基亚丁素 (m6A) RNA修饰的图表,揭示了其广泛存在和与替代拼接的关联. 这些发现增强了对猪表表体转录组复杂性的理解.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 史诗转录组学 史诗转录组学
背景情况:
- N6-甲基氨酸 (m6A) 是真核细胞信使RNA (mRNA) 中最丰富的内部修饰.
- 猪作为人类疾病研究的有价值的模型,但在猪组织中缺乏m6A修饰的全面地图.
研究的目的:
- 在广泛的猪组织中系统地绘制m6A修饰和替代拼接 (AS) 事件.
- 为了研究m6A修饰,转录表达和猪的AS之间的关系.
主要方法:
- 对39只母猪和7只胎儿猪组织样本进行直接RNA测序.
- 识别和分析m6A位点,转录,新型异形和多种A尾长.
- 对m6A修饰模式,转录表达和AS事件的整合性分析.
主要成果:
- 鉴定了60,823个转录,包括27,823个新异型,以及343,951个m6A位点.
- 在不同组织中,平均多A尾巴长度 (48101nt) 和m6A位点数 (27,830118,042) 的显著变化.
- 大脑组织表现出明显的特定区域的m6A模式和高异质性;m6A水平与转录表达呈正相关.
- 综合性分析支持m6A修饰和替代拼接之间的联系.
结论:
- 这项研究提供了猪组织中m6A修饰的第一个全身图.
- 这些发现揭示了猪m6A修饰的显著组织特异性模式和异质性.
- 这些结果增强了对m6A在猪转录体和表转录体中的调节作用的理解,这对疾病建模有意义.
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