MicroRNA-21: a ubiquitously expressed pro-survival factor in cancer and other diseases

Si Li1, Zhu Liang, Liu Xu

  • 1Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China.

Insights

MicroRNAs (miRNAs) regulate gene expression and are vital in biological processes. This review highlights miRNA-21

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • MicroRNAs (miRNAs) are small RNA molecules regulating gene expression post-transcriptionally.
  • They are crucial in biological processes like cell proliferation, differentiation, and apoptosis.
  • Aberrant miRNA expression is linked to various diseases, including cancer and cardiovascular conditions.

Purpose of the Study:

  • To review the multifaceted roles of miRNA-21 in cancer.
  • To explore the involvement of miRNA-21 in cardiovascular diseases.
  • To discuss the potential clinical applications of miRNA-21 as a diagnostic and prognostic marker.

Main Methods:

  • Literature review of studies on miRNA-21.
  • Analysis of miRNA-21's regulatory targets and pathways.
  • Synthesis of findings on miRNA-21's role in disease pathogenesis.

Main Results:

  • miRNA-21 is significantly upregulated in diverse cancer types.
  • It influences key cancer processes: initiation, transformation, invasion, and metastasis.
  • miRNA-21 acts as a pro-survival factor in cardiovascular diseases.

Conclusions:

  • miRNA-21 plays complex, critical roles in both cancer and cardiovascular diseases.
  • Its dysregulation suggests potential as a biomarker for disease diagnosis and prognosis.
  • Further research may unlock miRNA-21's therapeutic potential in clinical settings.

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