相关实验视频

Updated: Jul 8, 2025

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan

Published on: June 29, 2018

一对RNA结合蛋白抑制离子载体表达,以维持寿命

Rebekah Napier-Jameson¹, Olivia Marx¹, Adam Norris¹

¹Department of Biological Sciences, Southern Methodist University, 6501 Airline Rd, Dallas, TX 75205, USA.

|December 19, 2023

概括

像ex-7和mbl-1这样的RNA结合蛋白 (RBPs) 调节了C. elegans的寿命. 它们的合成相互作用表明离子载体nhx-6是影响寿命的关键目标.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
衰老研究研究衰老研究

背景情况:

转录因子是已知的寿命调节者.
RNA结合蛋白 (RBPs) 正在成为寿命的关键调节者.
确定负责寿命表型的特定监管目标是具有挑战性的.

研究的目的:

确定负责寿命缺陷的功能目标,这些缺陷是由两个RBP,ex-7和mbl-1之间的合成相互作用引起的.
利用转录组学精确定位由exc-7和mbl-1合成调节的基因.
调查确定目标在观察到的寿命表型中的作用.

主要方法:

利用转录组分析识别了ex-7;mbl-1双突变体中合成失调的基因.
系统地测试候选基因对其对寿命表型的贡献.
在C. elegans中进行过度基因表达和删除实验.

主要成果:

在双重突变中发现了一小组合成失调的基因.
发现双变异体中离子载体nhx-6的调节显著升高.
证明NHX-6的过度表达减少了寿命,而NHX-6的删除在双重突变中部分挽救了寿命和健康寿命.

结论:

一对RBP (exc-7和mbl-1) 调节寿命,部分是通过抑制离子载体nhx-6的表达来调节寿命.
nhx-6是一种功能性标,有助于在ex-7;mbl-1双突变中观察到的寿命缺陷.
这项研究提供了一个框架,用于剖析合成寿命表型,使用转录学来识别致病基因.

关键词:

这是一个RNARNARNARNARNA.在RNA结合蛋白质中的RNA结合蛋白.寿命长度寿命长度

更多相关视频

Using Caenorhabditis elegans to Screen for Tissue-Specific Chaperone Interactions

Using Caenorhabditis elegans to Screen for Tissue-Specific Chaperone Interactions

Published on: June 7, 2020

Molecular Modulation by Lentivirus-Delivered Specific shRNAs in Endoplasmic Reticulum Stressed Neurons

Molecular Modulation by Lentivirus-Delivered Specific shRNAs in Endoplasmic Reticulum Stressed Neurons

Published on: April 24, 2021

相关概念视频

Types of RNA

Types of RNA

Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...

Riboswitches

Riboswitches

Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...

RNA Interference

RNA Interference

RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...

siRNA - Small Interfering RNAs

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...

Experimental RNAi

Experimental RNAi

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...

RNA Stability

RNA Stability

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...