一个长非编码的eRNA形成R循环以塑造情感经验诱导的行为适应
Rose Marie Akiki1,2, Rebecca G Cornbrooks1, Kosuke Magami1
1Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA.
Science (New York, N.Y.)
|December 12, 2024
概括
一种新的长非编码增强子RNA (lnc-eRNA) 和它的R循环结构调节Npas4基因表达. 这种机制对于小鼠对压力和可卡因暴露的行为适应至关重要.
科学领域:
- 神经科学
- 分子生物学
- 遗传学
背景情况:
- 情绪体验会诱导神经可塑性,影响行为,并导致情绪和物质使用障碍.
- 直接早期反应基因,如Npas4 (神经PAS域蛋白4) 被经验激活并支持这些适应.
研究的目的:
- 研究特定长非编码增强子RNA (lnc-eRNA) 在调节Npas4基因表达中的作用.
- 确定 lnc-eRNA介导的 R-循环结构在染色体组织和基因诱导中的功能.
- 阐明这种调节机制对压力和药物暴露的行为适应的影响.
主要方法:
- 从活性敏感增强剂转录的保存 lnc-eRNA 的分析.
- 研究DNA:RNA混合R循环的形成及其在增强剂-促进剂循环中的作用.
- 对Npas4基因诱导动态的评估.
- 使用小鼠模型研究慢性心理压力和可卡因暴露后的行为变化.
主要成果:
- 在活性敏感增强剂中,保存的 lnc-eRNA 形成 R 循环结构.
- 这些R循环促进增强剂和Npas4近位促进剂之间的三维染色质循环.
- 这一过程导致了快速的Npas4基因诱导.
- 在老鼠中,Npas4 lnc-eRNA及其R循环对于由慢性压力和可卡因暴露引起的行为适应是必不可少的.
结论:
- 一个涉及lnc-eRNA和R环的新型调节机制控制了Npas4基因表达.
- 这种机制在应对情绪体验,包括压力和物质使用时的行为可塑性中起着至关重要的作用.
- 这些发现表明情绪和物质使用障碍的潜在治疗目标.
相关概念视频
01:23Types 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...
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...
01:23Types 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...
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...
01:20Types 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...
RNA Performs Diverse...
02:39lncRNA - Long Non-coding RNAs
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...
01:20Types 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...
RNA Performs Diverse...
01:25Nucleic Acid Structure
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...