相关实验视频

Updated: Mar 10, 2026

A Nonsequencing Approach for the Rapid Detection of RNA Editing

A Nonsequencing Approach for the Rapid Detection of RNA Editing

Published on: April 21, 2022

ADAR1通过编辑依赖和独立的机制调节核和线粒体转录中的dsRNA形成

Heegwon Shin¹, Tyler J Dorrity¹, Justin Aruda²

¹Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, USA.

|March 9, 2026

概括

ADAR1酶通过编辑和非编辑途径调节自我双链RNA (dsRNA). ADAR1控制线粒体dRNAs,影响细胞炎症和应激反应.

科学领域:

分子生物学分子生物学
免疫学免疫学免疫学
遗传学是一个遗传学.

背景情况:

内源双链RNAs (dsRNAs) 可以触发人类细胞中的先天免疫反应.
ADAR1,一种作用于RNA的腺脱氨酶,通常会抑制自我dsRNAs的免疫激活.
目前尚不完全了解ADAR1对细胞dsRNA环境的确切影响.

研究的目的:

研究ADAR1如何影响人体细胞内自我dsRNAs的丰富性和分布.
阐明ADAR1调节dsRNA水平的编辑依赖和独立机制.
探索ADAR1在控制线粒体dRNA和随后的细胞反应中的作用.

主要方法:

在野生类型和ADAR1缺乏的人类细胞上进行了定量dsRNA测序.
质谱和生物化学测试被用来检测线粒体部分中的ADAR1.
细胞对线粒体压力的反应被评估在ADAR1.1的存在和缺乏的情况下.

主要成果:

通过编辑依赖和独立的机制,ADAR1降低自我dsRNA的丰度.
dsRNAs主要存在于编码蛋白质的mRNA和线粒体RNA中.
缺少ADAR1导致线粒体中dsRNAs的积累,并且在线粒体应激下对炎症的敏感性增加.

结论:

ADAR1的调节作用扩展到线粒体dRNAs,而不仅仅是A-to-I编辑的转录.
ADAR1在控制线粒体dRNA水平和缓解炎症反应方面发挥着至关重要的作用.
ADAR1对于细胞平衡至关重要,特别是在线粒体应激的条件下.

关键词:

在A-to-I编辑中.在 ADAR1 中,ADAR1 是在 AGS 找 AGS.艾卡迪-古蒂埃雷斯综合征是什么 CP: 免疫学免疫学科普:分子生物学国际货币基金组织 IFN IFN 在PKR中,PKR是PKR.这是一种双链RNA.dsRNARNA是什么意思 dsRNA-seqq 的使用情况.这是先天免疫力.线粒体中的线粒体.线粒体的压力是线粒体的压力.蛋白质激酶R的蛋白质激酶R.一种类型的干扰素-1型干扰素.

更多相关视频

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle

Published on: March 5, 2019

A Reporter Based Cellular Assay for Monitoring Splicing Efficiency

A Reporter Based Cellular Assay for Monitoring Splicing Efficiency

Published on: September 15, 2021

相关概念视频

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...

Chromatin Structure Regulates pre-mRNA Processing

Chromatin Structure Regulates pre-mRNA Processing

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...

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...

Nuclear Export of mRNA

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...

Types of RNA

Types of RNA

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 regulating 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 Performs Diverse...

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...