动脉样硬化中的表转录学:解开RNA修饰,编辑和拼接及其在血管疾病中的含义
Victoria Stopa1, Dimitra Dafou2, Korina Karagianni2
1Cardiovascular Research Unit, Department of Precision Health, Luxembourg Institute of Health, Strassen, Luxembourg.
Vascular pharmacology
|April 16, 2025
概括
经转录学,研究RNA修饰,在动脉样硬化中至关重要. 了解N6-甲基氨酸 (m6A) 和其他RNA过程中的这些变化为这种广泛传播的疾病提供了新的治疗途径.
科学领域:
- 心血管生物学 心血管生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 动脉样硬化是一个主要的全球健康问题,由复杂的基因调节驱动.
- 经转录学,即对RNA化学修饰的研究,正在成为血管健康和疾病的关键因素.
- RNA修饰会影响内皮细胞,光滑肌细胞和巨细胞中的细胞功能,影响动脉样硬化病原.
研究的目的:
- 提供对动脉样硬化的表皮转录学景观的全面审查.
- 探索关键RNA修改 (m6A,m5C, Ψ,RNA编辑,异型) 在疾病进展中的功能影响.
- 为突出挑战和未来的方向,将表体转录学整合到动脉样硬化研究.
主要方法:
- 文献综述专注于表体转录学和动脉样硬化.
- 分析关键RNA修饰及其在细胞过程中的作用.
- 讨论与其他omics方法的整合.
主要成果:
- 关键RNA的修改,如N6-甲基氨酸 (m6A) 显著影响RNA的稳定性,拼接和microRNA活动.
- 这些修改影响了动脉样硬化中的关键途径,包括炎症,脂质代谢和血管细胞适应.
- 由这些修改产生的RNA异型可以改变细胞表型并促进疾病的进展.
结论:
- 经转录组学为动脉样硬化病原和潜在的治疗点提供了新的见解.
- 需要进一步的研究来克服技术限制并阐明因果机制.
- 将表体转录学与基因组学,蛋白质组学和代谢组学相结合,将提供对动脉样硬化的整体理解.
相关概念视频
02:23RNA Editing
8.8K
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...
8.8K
02:18Alternative RNA Splicing
20.8K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
20.8K
01:32RNA Splicing
55.7K
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...
55.7K
01:53RNA Stability
33.0K
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...
33.0K
01:36What is Gene Expression?
8.3K
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
8.3K
02:41Chromatin Structure Regulates pre-mRNA Processing
6.8K
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...
6.8K