相关实验视频

Updated: Jun 15, 2025

Identification of Circular RNAs using RNA Sequencing

Identification of Circular RNAs using RNA Sequencing

Published on: November 14, 2019

一种由人类循环RNA circSLC8a1编码的新型蛋白质异型,有助于心脏重塑

Feiya Li^1,2, William Weidong Du^1,2, Xiangmin Li^1,2,3

¹Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, Canada M4N 3M5.

Cardiovascular research

|April 24, 2025

概括

循环RNA circSLC8a1转化为一种新型蛋白质,SLC8a1-604,它通过在心脏重塑过程中破坏线粒体基因转录和ATP合成来损害心脏功能.

科学领域:

分子生物学分子生物学
心血管研究研究心血管研究
遗传学是一个遗传学.

背景情况:

循环RNAs (circRNAs) 越来越多地因其复杂的调节作用而得到认可.
包括circSLC8a1在内的circRNA的翻译潜力已经被假设,但缺乏强大的实验验证.
了解circRNA衍生的蛋白质对于阐明新的生物功能至关重要.

研究的目的:

为了研究circSLC8a1 (hsa_circ_0005232) 的翻译潜力.
描述circRNA衍生蛋白SLC8a1-604在心脏重塑中的功能作用.
阐明SLC8a1-604对心脏功能影响的分子机制.

主要方法:

产生表达circSLC8a1及其翻译蛋白SLC8a1-604.4的转基因小鼠线.
在体外和体内验证circSLC8a1转化.
在转基因小鼠中诱导压力过载以模拟心脏应激.
线粒体蛋白相互作用研究和基因转录和ATP合成的评估.

主要成果:

证实了circSLC8a1的转化为一种新的604氨基酸蛋白,SLC8a1-604.
转基因SLC8a1-604小鼠发展出心力衰竭表型,并在压力过载下表现出恶化的功能障碍.
局部化到线粒体的SLC8a1-604,结合POLRMT,抑制了线粒体基因转录,并减少了ATP合成,独立于circRNA本身.

结论:

CircSLC8a1可以编码一个功能性蛋白质异型,SLC8a1-604.4.
SLC8a1-604在调节心脏功能和病理重塑方面发挥着至关重要的作用.
circSLC8a1转化为SLC8a1-604代表了一种影响心力衰竭进展的新机制.

关键词:

在ATP合成过程中,循环RNA 是一个循环RNA.循环RNA的翻译.电路SLC8a1a1 电路SLC8a1a1 电路SLC8a1 心脏的功能心脏的功能线粒体中的线粒体.

更多相关视频

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes

Published on: February 24, 2017

Use of Alu Element Containing Minigenes to Analyze Circular RNAs

Use of Alu Element Containing Minigenes to Analyze Circular RNAs

Published on: March 10, 2020

相关概念视频

RNA Splicing

RNA Splicing

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...

Alternative RNA Splicing

Alternative RNA Splicing

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...

Protein Complexes with Interchangeable Parts

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...

RNA Editing

RNA Editing

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...