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Related Concept Videos

MicroRNAs01:22

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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...
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RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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PmiRtarbase: A positive miRNA-target regulations database.

Peng Xu1, Xianbin Li2, Yijun Liang3

  • 1Institute of Computational Science and Technology, Guangzhou University, Guangzhou, Guangdong 510006, PR China; School of Computer Science of Information Technology, Qiannan Normal University for Nationalities, Duyun, Guizhou 558000, PR China.

Computational Biology and Chemistry
|May 14, 2022
PubMed
Summary
This summary is machine-generated.

Researchers created PmiRtarbase, a new database of validated positive microRNA (miRNA) target interactions. This resource aids in understanding miRNA positive gene regulation and developing miRNA-based therapeutics.

Keywords:
MiRNAPmiRtarbasePositive miRNA-target interaction

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Area of Science:

  • Molecular Biology
  • Genetics
  • Bioinformatics

Background:

  • MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression.
  • Existing databases lack systematic collection of validated positive miRNA-target associations.
  • Understanding miRNA positive regulation is crucial for biological and therapeutic applications.

Purpose of the Study:

  • To develop a comprehensive database of validated positive miRNA-target interactions.
  • To facilitate research into miRNA positive regulatory mechanisms.
  • To support the development of miRNA-based therapeutics.

Main Methods:

  • Systematic literature mining to identify validated positive miRNA-target interactions.
  • Curation of interaction data, including species, genes, miRNAs, conditions, and descriptions.
  • Development of a user-friendly database interface (PmiRtarbase) for searching and downloading data.

Main Results:

  • PmiRtarbase contains 312 curated positive associations between 119 miRNAs and 169 genes across 8 species.
  • Data was compiled from 130 published studies.
  • The database provides detailed information on the conditions and context of these interactions.

Conclusions:

  • PmiRtarbase is a valuable resource for studying miRNA positive gene regulation.
  • The database can advance research in miRNA mechanisms and therapeutic development.
  • It offers a centralized, accessible platform for validated positive miRNA-target data.