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[microRNA in autoimmune disorders]

Masatoshi Jinnin1

  • 1Department of Dermatology and Plastic Surgery, Kumamoto University, Japan.

Nihon Rinsho Men'Eki Gakkai Kaishi = Japanese Journal of Clinical Immunology
|January 5, 2012
PubMed

Insights

MicroRNAs regulate gene expression and are involved in autoimmune diseases. Understanding their role may lead to new diagnostic biomarkers and therapies for conditions like scleroderma.

Area of Science:

  • Molecular Biology
  • Genetics
  • Immunology

Context:

  • MicroRNAs (miRNAs) are short RNA molecules regulating gene expression.
  • They target messenger RNAs (mRNAs), influencing protein production.
  • Dysregulation of miRNAs is linked to various human disorders.

Purpose:

  • To review the expression and role of miRNAs in autoimmune diseases.
  • To explore the potential of miRNAs as biomarkers and therapeutic targets.

Summary:

  • MicroRNAs bind to target mRNAs, inhibiting translation or causing degradation.
  • Over 1000 miRNAs in the human genome target approximately 60% of mRNAs.
  • This paper examines miRNA involvement in rheumatoid arthritis, Sjogren syndrome, lupus, scleroderma, type I diabetes, and psoriasis.

Impact:

  • Down-regulation of miR-29 in scleroderma fibroblasts correlates with excessive collagen production.
  • Restoring miR-29 levels decreases collagen expression in scleroderma.
  • Decreased serum miR-29a levels indicate early-stage scleroderma, suggesting potential as a biomarker.

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