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siRNA - Small Interfering RNAs02:30

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Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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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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Natural antisense transcripts.

Olga Khorkova1, Amanda J Myers2, Jane Hsiao1

  • 1OPKO Health Inc., 10320 USA Today Way, Miramar, FL 33025, USA.

Human Molecular Genetics
|May 20, 2014
PubMed
Summary
This summary is machine-generated.

Natural antisense transcripts (NATs) are regulatory RNAs transcribed from opposite DNA strands. These non-coding RNAs, once dismissed as junk DNA, are crucial for eukaryotic genome function and hold therapeutic potential.

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Area of Science:

  • Genomics
  • Molecular Biology
  • RNA Biology

Background:

  • Eukaryotic genome function is increasingly understood to involve crucial roles of RNA.
  • Consortia like FANTOM, GENCODE, and ENCODE have identified natural antisense transcripts (NATs).
  • NATs originate from previously uncharacterized 'junk DNA' regions.

Purpose of the Study:

  • To summarize the rapidly growing knowledge on natural antisense transcripts (NATs).
  • To highlight the regulatory roles and therapeutic potential of NATs.

Main Methods:

  • Literature review and synthesis of recent findings on NATs.
  • Analysis of data from major genomic consortia (FANTOM, GENCODE, ENCODE).

Main Results:

  • NATs are a heterogeneous subclass of non-coding regulatory RNA.
  • NATs are transcribed from the opposite strand of coding gene loci.
  • NATs play significant regulatory roles within the eukaryotic genome.

Conclusions:

  • NATs represent an important class of non-coding RNAs with significant biological functions.
  • The diverse nature of NATs suggests considerable potential for therapeutic applications.