在长期神经元过敏症下进行替代拼接和神经性mRNA转位
Eran Meshorer1, Christina Erb, Roi Gazit
1Department of Biological Chemistry, The Institute of Life Sciences and The Eric Roland Center for Neurodegenerative Diseases, The Hebrew University of Jerusalem, Israel 91904.
概括
压力会改变神经元中的乙胆酶 (AChE) 拼接变体,从 AChE-S 转变为 AChE-R. 这种变化导致长期的神经元过敏,这是压力的关键后果.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 压力生理学 压力生理学
背景情况:
- 压力会导致神经元功能长期变化.
- 乙胆酶 (AChE) 在胆性神经传递中起着至关重要的作用.
- AChE存在于不同的拼接变体,包括AChE-S和AChE-R.
研究的目的:
- 研究长期压力后果背后的神经系统机制.
- 为了检查神经元内AChE拼接变体转移的压力诱导的变化.
主要方法:
- 研究了由压力引起的AChE拼接变体神经质转移的变化.
- 利用皮质,抗胆固醇酶和强迫游泳作为压力因素.
- 在海马片中进行了电生理学测量.
主要成果:
- 压力迅速而持续地将ACHE拼接变体表达从ACHE-S转移到ACHE-R.
- 促进了AChE-RmRNA转移到神经细胞中,并诱导了酶分泌.
- 经过压力后几周观察到对抗胆酶和氨酸的极端神经元过敏.
结论:
- 紧张后的神经元过敏症涉及神经元炎中AChE-S与AChE-R的替换.
- 这种机制有助于应激对神经元功能的长期后果.
相关概念视频
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
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Alternative RNA Splicing
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
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Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
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RNA Performs Diverse...
RNA Performs Diverse...


