相关实验视频

Updated: Jul 28, 2025

A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals

A Procedure for Implanting Organized Arrays of Microwires for Single-unit Recordings in Awake, Behaving Animals

Published on: February 14, 2014

通过动物微处理器进行非正规加工

Thuy Linh Nguyen¹, Trung Duc Nguyen¹, Minh Khoa Ngo¹

¹Division of Life Science, The Hong Kong University of Science & Technology, Hong Kong, China.

|June 2, 2023

概括

研究人员发现了微处理器 (MP) 处理微RNA (miRNA) 转录的新方法. 这种非正典机制使用了新的DROSHA dsRNA识别位点 (DRES) 并扩大了对miRNA生物发生的理解.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
生物化学生化学

背景情况:

微处理器 (MP),包括DROSHA-DGCR8,对于通过处理primi-miRNAs来启动miRNA生物发生至关重要.
已确定的MP的正规裂解机制已经研究了20年.
然而,这种正规途径无法解释动物中所有primiRNA的处理.

研究的目的:

发现和描述MP处理primiRNA的替代机制.
研究新型RNA-蛋白相互作用在miRNA生物发生中的作用.
确定替代的MP分离路径的进化保护和功能意义.

主要方法:

在大约26万个序列上进行了高通量pri-miRNA切割试验.
对正规与非正规的切割要求进行比较分析.
在体中识别和验证DROSHA dsRNA识别位点 (DRES).

主要成果:

一个新的,非正规的MP分离机制被确定和描述.
这种非正规的途径不需要正规机制的关键元素.
它依赖于以前未被识别的DROSHA dsRNA识别站点 (DRES).
非正典机制在动物物种中得到保护,特别重要的是C. elegans.

结论:

非正规的MP分离机制解释了通过正规途径错过的primi-miRNA基质的处理.
这一发现扩大了动物MP的已知基质范围.
这表明miRNA生物发生的扩大调节网络.

关键词:

这里是C. elegans.总局CR8 总局CR8 总局穿着很漂亮的衣服,可以穿得很好.德罗莎 (Drosha) 是一个名为德罗莎 (Drosha) 的语言.在DROSHA的识别站点.微处理器微处理器准则的primiRNA处理.这就是miRNAs.非正规的primiRNA处理它们是primiRNAs.

更多相关视频

A Fully Automated and Highly Versatile System for Testing Multi-cognitive Functions and Recording Neuronal Activities in Rodents

A Fully Automated and Highly Versatile System for Testing Multi-cognitive Functions and Recording Neuronal Activities in Rodents

Published on: May 3, 2012

Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans

Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans

Published on: February 19, 2018

相关概念视频

pre-mRNA Processing

pre-mRNA Processing

In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...