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Published on: September 8, 2015
A Review on the Role of miR-149-5p in the Carcinogenesis
Soudeh Ghafouri-Fard1, Tayyebeh Khoshbakht2, Bashdar Mahmud Hussen3
1Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran 16666-63111, Iran.
Abstract:
miR-149 is an miRNA with essential roles in carcinogenesis. This miRNA is encoded by the MIR149 gene on 2q37.3. The miR-149 hairpin produces miR-149-5p and miR-149-3p, which are the "guide" and the sister "passenger" strands, respectively. Deep sequencing experiments have shown higher prevalence of miR-149-5p compared with miR-149-3p. Notably, both oncogenic and tumor suppressive roles have been reported for miR-149-5p. In this review, we summarize the impact of miR-149-5p in the tumorigenesis and elaborate mechanisms of its involvement in this process in a variety of neoplastic conditions based on three lines of evidence, i.e., in vitro, in vivo and clinical settings.
Insights
MicroRNA-149-5p (miR-149-5p) plays a dual role in cancer, acting as both an oncogene and tumor suppressor. This review explores its complex involvement in tumorigenesis across various cancers using in vitro, in vivo, and clinical data.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- MicroRNAs (miRNAs) are key regulators of gene expression.
- miR-149, encoded by the MIR149 gene, produces two strands: miR-149-5p and miR-149-3p.
- miR-149-5p has been implicated in various biological processes, including carcinogenesis.
Purpose of the Study:
- To review the multifaceted roles of miR-149-5p in tumorigenesis.
- To elucidate the mechanisms underlying miR-149-5p's involvement in cancer.
- To consolidate evidence from in vitro, in vivo, and clinical studies.
Main Methods:
- Literature review of studies investigating miR-149-5p in cancer.
- Analysis of data from in vitro experiments (cell lines).
- Analysis of data from in vivo models (animal studies) and clinical settings (patient data).
Main Results:
- miR-149-5p exhibits both oncogenic and tumor-suppressive functions in different cancer types.
- Evidence from diverse experimental settings supports its complex role in neoplastic conditions.
- Specific mechanisms of action vary depending on the cellular context and cancer type.
Conclusions:
- miR-149-5p is a significant player in cancer development and progression.
- Understanding its dual role is crucial for developing targeted cancer therapies.
- Further research is warranted to fully unravel its therapeutic potential.
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