在骨髓瘤中对N6-甲基亚诺辛RNA修饰的研究进展:功能,机制和潜在的临床应用
Ying Yang1, Wen-Juan Ni1,2, Yadong Yang3
1School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, Jiangxi, China.
Medical oncology (Northwood, London, England)
|January 24, 2025
概括
N6-甲基氨酸 (m6A) RNA修饰在骨髓瘤 (OS) 的发展中起着关键作用. 了解m6A调节器为这种具有挑战性的骨癌提供了潜在的新诊断和治疗策略.
科学领域:
- 表观遗传学和分子瘤学
- 癌症生物学 癌症生物学
- 基因组RNA的修改 基因组RNA的修改
背景情况:
- 骨髓瘤 (OS) 是一种主要的恶性骨瘤,预后不佳,特别是在儿科和青少年群体中.
- 尽管治疗方面取得了进展,但OS仍然具有高度侵入性,并且难以有效治疗.
- 作为一种常见的RNA表观遗传标记,N6-甲基氨酸 (m6A) 修饰越来越多地被认为对OS病原发生有重大影响.
研究的目的:
- 在骨髓瘤的背景下,对m6A调节体 (甲基转移酶,脱甲基酶,结合蛋白) 进行全面的审查.
- 阐明m6A修饰在促进或抑制OS进展中的双重作用.
- 探索m6A修饰RNA在关键瘤信号通路中的机制性参与.
主要方法:
- 文献综述和对m6A修饰和骨髓瘤现有研究的综合.
- 在OS中详细分析m6A调节器的表达和功能.
- 在关键信号通路 (Wnt/β-catenin,PI3K/AKT,STAT3) 中检查m6A介导的mRNA和ncRNA调节.
主要成果:
- 在骨髓瘤中经常观察到m6A调节者的异常表达.
- m6A的修改可以在OS中产生瘤和瘤抑制作用.
- m6A修饰的mRNA和ncRNA是主要OS信号通路的组成部分.
结论:
- m6A调节剂代表了骨髓瘤诊断和预后的有前途的生物标志物.
- 准m6A调节器为骨髓瘤提供了一个潜在的新疗法策略.
- 对m6A修饰机制的进一步研究可以为OS治疗提供新的见解.
相关概念视频
RNA Editing
8.9K
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
8.9K
RNA Stability
33.2K
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...
33.2K
Pre-mRNA Processing: Modification of pre-mRNA Ends
9.2K
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 (7-methyl guanosine). This 5' cap helps...
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 (7-methyl guanosine). This 5' cap helps...
9.2K
Nuclear Export of mRNA
7.5K
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...
7.5K
mRNA Stability and Gene Expression
5.5K
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
5.5K
The Nucleolus
8.7K
The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
8.7K


