RNA结合蛋白PRRC2B的功能丧失导致翻译缺陷和先天性心血管形
Debojyoti Das1, Eng-Soon Khor1, Feng Jiang1,2
1Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY 14642.
medRxiv : the preprint server for health sciences
|October 14, 2024
概括
富含蛋白质2B (PRRC2B) 的替代拼接对心脏发育产生影响. 在小鼠中,PRRC2B的丧失会导致先天性心脏缺陷和新生儿死亡,突出其在心血管健康中的作用.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 替代拼接产生蛋白质多样性,影响细胞功能.
- 富含蛋白2B (PRRC2B) 是一种调节翻译启动的RNA结合蛋白.
- PRRC2B对于细胞周期的进展和增殖至关重要.
研究的目的:
- 研究PRRC2B替代拼接在心血管发育中的作用.
- 为了确定PRRC2B损失和特定异型的功能后果.
- 为了确定参与心脏和血管形成的PRRC2B调节基因.
主要方法:
- 鉴定和描述PRRC2B拼接异型 (FL和DE16).
- 产生和分析具有PRRC2B突变和基因失活的小鼠模型.
- 转录组概况 (批量和单核RNA-seq) 和多组体分析 (蛋白质组体,多组体-seq).
主要成果:
- 一种与先天性心脏病相关的基因突变模仿变体没有引起疾病,但全球PRRC2B的失活导致了专利性动脉管和新生儿死亡率.
- PRRC2B 缺陷导致了光滑肌肉特定基因的下调,并减少了胚胎心脏中的光滑肌肉细胞数量.
- 在物种之间确定了对心脏和血管发育至关重要的保存的PRRC2B调节的向mRNA.
结论:
- PRRC2B的替代拼接及其翻译控制对先天性心血管发育至关重要.
- PRRC2B在调节光滑肌肉细胞发育和心血管完整性方面发挥着至关重要的作用.
- PRRC2B的失调可能会导致人类心血管疾病,提供潜在的诊断和治疗点.
相关概念视频
Translation
14.6K
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Proteins are...
Translation Produces the Building Blocks of Life
Proteins are...
14.6K
Alternative RNA Splicing
21.0K
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...
21.0K
piRNA - Piwi-interacting RNAs
6.8K
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
6.8K
RNA Splicing
56.1K
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...
56.1K
Experimental RNAi
6.1K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.1K
The Retinoblastoma Gene
4.1K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.1K


