核细胞蛋白Nop2通过调节与核糖体生物发生相关的过程来促进神经分化
Tingting Yang1, Jiancong Wen1, Xiaoyu Li1
1Zhanjiang Key Laboratory of Zebrafish Model for Development and Disease, Affiliated Hospital of Guangdong Medical University; School of Medical Technology, Guangdong Medical University, Guangdong, China.
概括
NOP2核蛋白 (NOP2) 对于神经发育至关重要. 它的缺乏导致小头症和受损的神经元生成,通过破坏核糖体生物发生和激活亡.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 神经科学是一个神经科学.
背景情况:
- NOP2核蛋白 (NOP2) 对核糖体生物发生,细胞循环和胚胎发育至关重要.
- 它在神经发育和时空动态中的作用尚不清楚.
研究的目的:
- 用斑马鱼模型研究NOP2在神经发育中的功能.
- 阐明NOP2在神经发生过程中的作用背后的分子机制.
主要方法:
- 在斑马鱼中使用CRISPR/Cas9介导的淘汰模式.
- 生物化学特征的前核糖体颗粒处理.
- 核糖体简介 (Ribo-seq). 核糖体简介 (Ribo-seq). 核糖体简介 (Ribo-seq). 核糖体简介 (Ribo-seq). 核糖体简介 (Ribo-seq.). 核糖体简介
- 有TP53突变的遗传表现实验.
主要成果:
- 在斑马鱼中,NOP2缺乏导致胚胎致死性,小头症和大脑.
- 诺2除损害了神经前体的分化,减少了神经元和质细胞的产生.
- 缺陷的核糖体生物发生被确定为主要的分子缺陷.
- 在神经细胞中,Nop2缺乏激活了p53-依赖的亡.
- tp53突变部分挽救了神经性缺陷和,但没有小头症.
结论:
- Nop2是神经发育的重要调节者,促进神经分化.
- Nop2调节与核糖体生物发生相关的过程,这对于神经发生是必不可少的.
- 这项研究提供了与核糖体病变相关的神经发育障碍的见解.
相关概念视频
Ribosomes
75.7K
Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome...
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome...
75.7K
Ribosomal RNA Synthesis
14.8K
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
14.8K
Neural Regulation
43.4K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
43.4K
Regulated Protein Degradation
8.9K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.9K
Chromatin Structure Regulates pre-mRNA Processing
8.2K
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...
The chromatin structure, especially...
8.2K
The Eukaryotic Promoter Region
18.8K
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
18.8K


