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Related Concept Videos

RNA Interference01:23

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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siRNA - Small Interfering RNAs02:30

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Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
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Experimental RNAi02:15

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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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PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
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Application of RNA Interference in the Pinewood Nematode, Bursaphelenchus xylophilus
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Nematode endogenous small RNA pathways.

Suzanne W Hoogstrate1, Rita Jm Volkers1, Mark G Sterken1

  • 1Laboratory of Nematology; Wageningen University; Wageningen, The Netherlands.

Worm
|October 24, 2014
PubMed
Summary
This summary is machine-generated.

Small RNA pathways regulate gene expression and chromatin remodeling, impacting development and genome stability. This review covers microRNAs, endogenous small interfering RNAs, and PIWI-interacting RNAs in C. elegans and their evolution in nematodes.

Keywords:
ArgonauteC. elegansRNA interferenceRNA silencingendo-siRNAmiRNAnematodepiRNAsmall RNA

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Area of Science:

  • Molecular Biology
  • Genetics
  • Developmental Biology

Background:

  • Small RNA pathways are crucial for gene regulation, affecting development, fertility, and genome stability.
  • These pathways utilize small RNAs to control gene expression and chromatin remodeling.

Purpose of the Study:

  • To review the function of three main endogenous small RNA silencing pathways in Caenorhabditis elegans.
  • To explore the evolution of these pathways in other nematode species.

Main Methods:

  • Literature review of small RNA research in Caenorhabditis elegans and other nematodes.
  • Analysis of the roles of microRNAs, endogenous small interfering RNAs, and PIWI-interacting RNAs.

Main Results:

  • Small RNA pathways, including microRNAs, endogenous siRNAs, and piRNAs, are fundamental to gene regulation in C. elegans.
  • Comparative analysis across nematode species reveals insights into the evolutionary trajectories of these silencing mechanisms.

Conclusions:

  • Understanding the distinctions and evolutionary history of endogenous small RNA pathways provides a comprehensive view of their biological functions.
  • Further research into nematode small RNA pathways can illuminate conserved and divergent roles in gene regulation and organismal biology.