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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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In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
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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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Islet Long Noncoding RNAs: A Playbook for Discovery and Characterization.

Ruth A Singer1,2, Lori Sussel3,4

  • 1Columbia University Medical Center, New York, NY.

Diabetes
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Summary

Long noncoding RNAs (lncRNAs) are crucial gene regulators implicated in diabetes. Understanding lncRNA roles and discovery methods is vital for developing new diabetes treatments.

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Area of Science:

  • Endocrinology
  • Molecular Biology
  • Genetics

Background:

  • Diabetes mellitus is a complex metabolic disorder with significant comorbidities.
  • Despite extensive research, complete understanding and effective treatments for diabetes remain elusive.
  • Long noncoding RNAs (lncRNAs) have emerged as critical gene regulators, challenging the
  • junk
  • DNA paradigm.

Purpose of the Study:

  • To review the current knowledge of lncRNAs in diabetes.
  • To summarize lncRNA discovery methodologies.
  • To discuss future research directions and therapeutic potential of lncRNAs in diabetes.

Main Methods:

  • Literature review focusing on lncRNA research in diabetes.
  • Analysis of lncRNA identification and validation strategies.
  • Synthesis of current findings and future perspectives.

Main Results:

  • lncRNAs play significant roles in islet function and dysfunction.
  • Misregulation of lncRNAs is linked to various diseases, including diabetes.
  • lncRNAs are promising targets for novel therapeutic interventions.

Conclusions:

  • Re-evaluation of islet biology is necessary considering the regulatory functions of RNA.
  • Further investigation into lncRNAs offers potential for innovative diabetes drug discovery.
  • lncRNA research is crucial for advancing diabetes understanding and treatment.