m6A非编码RNA的修改:人类疾病中的机制,功能和潜在价值 (综述)
1Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan 646099, P.R. China.
International journal of molecular medicine
|August 8, 2025
概括
在非编码RNA (ncRNA) 中,N6-甲基氨酸 (m6A) RNA 修改至关重要,影响其稳定性并使转化成为可能. 这些m6A修饰的ncRNA显示出作为疾病诊断和向治疗的生物标志物的潜力.
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.
- 在RNA生物学,RNA生物学.
背景情况:
- N6-甲基氨酸 (m6A) 是真核RNA中一个关键的转录后修饰.
- m6A调节信使RNA (mRNA) 中的基本细胞过程,包括拼接,定位,稳定性和翻译.
- 在非编码RNA (ncRNA) 中越来越多地识别m6A修饰,影响其功能和疾病相关性.
研究的目的:
- 审查目前对ncRNAs中m6A修饰的理解.
- 探索m6A对ncRNA稳定性和翻译的功能影响.
- 提供关于m6A修饰的ncRNAs在疾病进展和治疗潜力的作用的见解.
主要方法:
- 文献综述和关于ncRNAs中的m6A修饰的当前研究的综合.
- 对m6A对ncRNA稳定性和翻译的功能影响的分析.
- 检查m6A修饰的ncRNAs在各种疾病中的作用.
主要成果:
- m6A是ncRNAs中的可逆表观遗传修饰,影响其稳定性.
- m6A 修改使得 ncRNAs 可以转化为.
- 在疾病中观察到m6A修饰的ncRNAs的差异表达.
结论:
- m6A修饰在ncRNA功能和调节中发挥着重要作用.
- 经m6A修饰的ncRNAs作为分子诊断的生物标志物具有前景.
- 针对m6A修饰的ncRNA及其编码为新的治疗策略提供了潜力,包括免疫疗法.
相关概念视频
MicroRNAs
3.1K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.1K
lncRNA - Long Non-coding RNAs
8.9K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
8.9K
RNA Stability
33.9K
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...
33.9K
RNA Splicing
57.0K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
57.0K
RNA Editing
9.2K
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...
9.2K
Chromatin Structure Regulates pre-mRNA Processing
7.2K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
The chromatin structure, especially...
7.2K


