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Updated: May 29, 2026

Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
MicroRNA-21: a ubiquitously expressed pro-survival factor in cancer and other diseases
1Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China.
Abstract:
MiRNAs are a new class of small RNA molecules that regulate gene expression at the post-transcriptional and translational levels. MiRNAs have been implicated in the control of many vital biological processes including development, cell proliferation, differentiation, and apoptosis. A growing number of studies have shown that miRNAs also play an important role in carcinogenesis and other diseases. Among the miRNAs identified, miRNA-21 is dramatically up-regulated in cancer cells of various origins. It regulates a wide range of genes and pathways involved in cancer initiation, transformation, invasion, and metastasis. MiRNA-21 also acts as a pro-survival factor in cardiovascular diseases. Aberrant expression in these diseases makes miRNA-21 a potential marker for disease diagnosis and prognosis. This review highlights the complex roles that miRNA-21 plays in cancer and cardiovascular diseases and its potential clinical applications.
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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