YTHDF蛋白在m6的A-修饰RNA上表现出不同的细胞功能
1Department of Chemistry, The University of Chicago, Chicago, IL 60637, USA; Howard Hughes Medical Institute, The University of Chicago, Chicago, IL 60637, USA.
Trends in biochemical sciences
|April 27, 2024
概括
YTHDF蛋白通过RNA甲基化 (m6A) 调节基因表达. 它们的独特功能,由N-终端序列驱动,控制mRNA翻译和降解,影响抗癌免疫力.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 免疫学 免疫学 免疫学
背景情况:
- YTHDF蛋白质是哺乳动物RNAN6-甲基氨酸 (m6A) 甲基化的关键细胞质"读者".
- 这些蛋白质对于m6A介导的调节至关重要,影响细胞细胞醇内的mRNA转化和降解.
- 最近的研究突出了YTHDF蛋白在微调表皮转录酶调节中的多种功能.
研究的目的:
- 为了阐明YTHDF蛋白质的不同功能.
- 探索控制YTHDF蛋白活性的机制,包括翻译后修饰 (PTM),亚细胞局部化和蛋白质相互作用.
- 总结YTHDF蛋白在抗癌免疫中的作用及其治疗潜力.
主要方法:
- 在YTHDF蛋白N-termini中对氨基酸序列的分析.
- 研究相分离倾向和翻译后修改 (PTMs).
- 关于YTHDF蛋白在细胞过程中的功能和癌症免疫力的文献综述.
主要成果:
- YTHDF 蛋白质的不同功能源于它们低复杂度的 N-终端氨基酸序列的变化.
- 独特的PTM,亚细胞局部化和蛋白质竞争被确定为关键的调节机制.
- YTHDF蛋白质在抗癌免疫中起着关键作用,呈现出潜在的治疗点.
结论:
- 通过不同的机制,YTHDF蛋白在表皮转录组中表现出多样化的调节功能.
- 了解这些调节机制对于探索YTHDF蛋白在癌症治疗中至关重要.
- 向YTHDF蛋白质为开发新型抗癌治疗提供了一个有希望的途径.
相关概念视频
RNA Stability
33.5K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
33.5K
Transfer RNA Synthesis
11.9K
One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases.
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
11.9K
mRNA Stability and Gene Expression
5.6K
The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Cis-acting Elements involved in mRNA stability
5.6K
Regulation of Expression at Multiple Steps
899
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
899
Nuclear Export of mRNA
7.7K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
7.7K
pre-mRNA Processing
52.9K
In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
52.9K


