斯诺RNA HBII-52 调节了2C 血清素受体的替代拼接
Shivendra Kishore1, Stefan Stamm
1Institut für Biochemie, Emil-Fischer-Zentrum, Friedrich-Alexander Universität Erlangen-Nürnberg, Fahrstrasse 17, 91054 Erlangen, Germany.
概括
普拉德-威利综合征与缺失的小核核RNA (snoRNA) 相关,称为HBII-52. 这种snoRNA通常调节血清素受体5-HT(2C) RmRNA拼接,而它缺失导致患者的mRNA异型变化.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 普拉德-威利综合征 (PWS) 是一种遗传性疾病,由15号染色体上母性印记区域的父性基因表达丧失引起.
- 这一关键区域包括小核RNA (snoRNA) 基因HBII-52.
研究的目的:
- 研究HBII-52snoRNA在调节基因表达中的作用.
- 确定HBII-52缺乏对普拉德-威利综合征中信使RNA (mRNA) 处理的影响.
主要方法:
- 分析HBII-52和血清素受体5-HT之间的序列互补性.
- 研究HBII-52与5-HT(2C) R.exon Vb中的一个静音元件的结合.
- 在普拉德-威利综合征患者和健康个体中比较5-HT(2C) R mRNA异型.
主要成果:
- HBII-52 呈现出对5-HT2C) R的异子Vb 的序列互补性.
- HBII-52通过与一个沉声元件结合,直接调节5-HT(2C) R的替代拼接.
- 普拉德-威利综合征患者缺乏HBII-52的表达,导致与对照组相比明显的5-HT2C) RmRNA异型.
结论:
- 一个snoRNA (HBII-52) 可以调节位于不同染色体上的基因的mRNA前处理.
- 预mRNA处理中的缺陷,特别是涉及HBII-52和5-HT2C) R,有助于普拉德-威利综合征的病理生理学.
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相关概念视频
RNA Polymerase II Accessory Proteins
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
RNA Polymerase II Accessory Proteins
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
