相关实验视频

Updated: May 27, 2025

Combined Nucleotide and Protein Extractions in Caenorhabditis elegans

Combined Nucleotide and Protein Extractions in Caenorhabditis elegans

Published on: March 17, 2019

一个RNA Pol I核心子单元的定位和表达动态在C的禁食反应中. 伊莱根斯 (elegans) 是一个词

Nada Al-Refaie^1,2, Francesco Padovani¹, Kurt M Schmoller¹

¹Institute of Functional Epigenetics, Helmholtz Zentrum München, Munich, Bavaria, Germany.

microPublication biology

|February 20, 2025

概括

营养素的可用性会影响核糖体的产生. 在C. elegans中禁食会降低RNA聚合酶I (Pol I) 子单元RPOA-2蛋白水平,这表明蛋白质的可用性调节了rDNA转录.

科学领域:

分子生物学分子生物学
细胞生物学细胞生物学
遗传学遗传学是一个

背景情况:

营养素的可用性可以动态调节核糖体生物发生.
核糖体生物发生需要精确控制RNA聚合酶I (Pol I) 活性.
在C. elegans中,禁食降低了前核糖体RNA (pre-rRNA) 水平,但根本的调节机制尚未完全理解.

研究的目的:

研究营养状况如何影响RPOA-2的表达和局部化,这是RNA Pol I的核心子单元.
为了确定RPOA-2蛋白水平是否会因C. elegans的食和禁食而发生变化.

主要方法:

免疫光显微镜用于评估RPOA-2在C. elegans肠道中的定位.
西方涂抹测量养,禁食和再养动物的RPOA-2蛋白水平.
在不同营养条件下分析C. elegans模型.

主要成果:

RPOA-2 始终局限于肠道中的核细胞,无论其营养状况如何 (食,禁食或再食).
禁食显著降低了C. elegans中的RPOA-2蛋白质量.
在禁食后重新食后,RPOA-2蛋白水平恢复正常.

结论:

营养状况影响RNA Pol I核心亚单元RPOA-2的蛋白质水平.
RNA Pol I核心子单元的可用性是调节rDNA转录以响应营养的可用性的一个贡献因素.
这些发现提供了对核糖体生物生成在对营养线索的反应中的后转录调节的见解.

更多相关视频

Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans

Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans

Published on: January 1, 2018

In Situ Detection of Ribonucleoprotein Complex Assembly in the C. elegans Germline using Proximity Ligation Assay

In Situ Detection of Ribonucleoprotein Complex Assembly in the C. elegans Germline using Proximity Ligation Assay

Published on: May 5, 2020

相关概念视频

Regulated mRNA Transport

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...