了解通过m6A-BERT-Deg通过YTHDF2介导的mRNA降解
Ting-He Zhang1,2, Sumin Jo1,3, Michelle Zhang4
1Cancer Virology Program, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA 15232, USA.
Briefings in bioinformatics
|April 15, 2024
概括
N6-甲基氨酸 (m6A) 修饰通过YTHDF2.2.调节mRNA衰变. 我们的m6A-BERT-Deg模型预测了这种降解,揭示了辅助因子通过破坏YTHDF2结合来增强mRNA稳定性.
科学领域:
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
- 在RNA生物学,RNA生物学.
背景情况:
- N6-甲基氨酸 (m6A) 是哺乳动物中最常见的mRNA修饰,对于调节mRNA稳定性,翻译和拼接至关重要.
- YTHDF2蛋白主要调解m6A依赖的mRNA降解,但确切的调节机制尚不清楚.
研究的目的:
- 开发一种YTHDF2介导的m6A修饰mRNA降解的预测模型.
- 为了阐明影响选择性mRNA衰变的因素,以响应m6A修饰.
主要方法:
- 开发m6A-BERT-Deg,一个专门用于预测YTHDF2介导的mRNA降解的BERT模型.
- 创建一个高质量的培训数据集来自多个来源的HeLa细胞.
- 实施预培训和微调策略,使用广泛的未标记的m6A站点序列来处理有限的培训数据.
主要成果:
- 与基准模型相比,预培训策略显著提高了m6A-BERT-Deg的性能.
- 模型解释显示,m6A位点附近的辅助因子可以抑制YTHDF2结合,从而增加mRNA稳定性.
- 扩展到HEK293细胞的分析表明,YTHDF2介导的mRNA降解的上下文依赖调节.
结论:
- m6A-BERT-Deg为预测YTHDF2-介导的mRNA衰变提供了一个强大的工具.
- 在m6A位点附近的辅因子存在代表了mRNA稳定性的新型调节机制.
- 由YTHDF2介导的mRNA降解受细胞环境的影响.
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