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相关概念视频

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...

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相关实验视频

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Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
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mirTarCLASH:一个全面的miRNA目标数据库,基于基于化学读取的实验.

Tzu-Hsien Yang1,2, Xiang-Wei Li3, Yuan-Han Lee3

  • 1Department of Biomedical Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan.

Database : the journal of biological databases and curation
|April 5, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了mirTarCLASH,这是一个用于探索microRNA (miRNA) 目标相互作用的数据库,使用来自CLASH类实验的模拟读取. 这个平台通过为miRNA-target绑定站点提供用户友好的工具和信任过器来增强对miRNA功能的理解.

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Last Updated: Jul 1, 2026

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科学领域:

  • 基因组学就是基因组学.
  • 分子生物学分子生物学
  • 生物信息学是一种生物信息学.

背景情况:

  • 微RNAs (miRNAs) 通过准信使RNAs (mRNAs) 来调节基因表达.
  • 识别miRNA-目标相互作用和结合部位对于理解miRNA功能至关重要.
  • 现有的方法,如交叉链接,结合和混合物测序 (CLASH-seq),可以产生用于直接分析miRNA目标的虚构读数,但缺乏可访问的平台.

研究的目的:

  • 开发一个用户友好的数据库,mirTarCLASH,以有效地探索miRNA-target相互作用和结合点.
  • 为了提供一个全面的存储库的模拟读取从人类,小鼠和虫的CLASH类实验.
  • 为了提高miRNA结合部位数据的信心和可视化.

主要方法:

  • 开发了mirTarCLASH,这是一个数据库,集成了502,061/322,707/224,452个来自人/老鼠/虫miRNA实验的独特混合阅读.
  • 采用了ChiRA算法进行嵌合体分析,并使用RNAup/miRanda工具进行结合点推断.
  • 实现了信任评估过器,包括读取深度,算法支持和交叉链接诱导的突变,以及集成的转录图谱可视化.

主要成果:

  • mirTarCLASH数据库提供了来自CLASH类实验的miRNA-target相互作用的大规模集合.
  • 信心过器和可视化工具允许精细分析和增强对miRNA结合部位的理解.
  • 通过在C. elegans中表现出良好的cel-let-7-5p和lin-41相互作用,证明了数据库的实用性.

结论:

  • mirTarCLASH为研究miRNA函数的研究人员提供了一个有价值的,可访问的资源.
  • 该数据库有助于发现新的miRNA-目标相互作用和结合点.
  • mirTarCLASH通过提供强大的数据和分析工具来支持随后的实验研究设计.