RNA结合蛋白可能会调节膝关节骨关节炎进展过程中异位性基因的替代拼接
Zheng Zhang1, Limei Dong2, Hai Tao3
1Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, 430060, Wuhan, Hubei, China. zhangzheng_fr@126.com.
BMC genomics
|March 20, 2024
概括
研究了膝关节骨关节炎 (OA) 中的替代拼接 (AS) 失调. 像CUL4B这样的RNA结合蛋白可能会控制亡基因AS,识别XAF1作为OA的潜在生物标志物.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 生物化学 生物化学
背景情况:
- 替代拼接 (AS) 生成多样化的mRNA和蛋白质变体,对于基因调节至关重要.
- AS的失调可以导致疾病,但其在膝关节骨关节炎 (OA) 中的作用尚不清楚.
- 这项研究旨在阐明AS事件和OA进展中的监管机制.
研究的目的:
- 为了识别和验证膝关节骨关节炎的替代拼接事件.
- 调查OA.中的AS背后的监管机制.
- 探索AS在OA病变发生过程中的临床相关性.
主要方法:
- 在人类OA和健康的半月膜样本中对基因表达的差异分析.
- 在生物途径中对OA相关基因进行丰富分析.
- 构建RNA结合蛋白 (RBPs) 和受调 AS (RAS) 基因的共变网络.
- 使用RT-qPCR验证关键发现.
主要成果:
- 与OA相关的基因在细胞外矩阵组织和骨化途径中得到丰富.
- 与亡相关的AS事件在OA发展中占主导地位.
- 确定了RBPs LAMA2和CUL4B作为AS在apoptotic基因XAF1和BCL2L13中的潜在调节者.
- 在OA阴囊中,CUL4B表达升高,在OA和对照样本之间,XAF1 AS比率显著不同.
结论:
- 差异表达的RBP可能会在膝盖OA进展期间调节缩基因AS.
- XAF1及其调节器CUL4B显示出作为膝关节OA的新生物标志物的潜力.
- XAF1和CUL4B可能代表膝关节OA的潜在治疗点.
相关概念视频
RNA Splicing
56.3K
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...
56.3K
Alternative RNA Splicing
21.1K
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...
21.1K
What is Gene Expression?
8.5K
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...
8.5K
Chromatin Structure Regulates pre-mRNA Processing
7.0K
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...
7.0K
Regulation of Expression at Multiple Steps
904
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...
904
Regulation of Expression Occurs at Multiple Steps
22.7K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
22.7K


