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Updated: Jun 7, 2026
08:40
Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
MicroRNA miR-93 promotes tumor growth and angiogenesis by targeting integrin-β8
1Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
Oncogene
|October 20, 2010
Summary
MicroRNA-93 (miR-93) promotes tumor growth and blood vessel formation (angiogenesis) by targeting integrin-β8. Inhibiting miR-93 may offer a new strategy against cancer progression.
Area of Science:
- Molecular Biology
- Oncology
- Biochemistry
Background:
- The miR-106b∼25 cluster, similar to miR-17∼92, shows oncogenic potential.
- The specific functions of individual microRNAs within the miR-106b∼25 cluster remain unclear.
Purpose of the Study:
- To investigate the role of microRNA-93 (miR-93) in angiogenesis and tumor development.
- To identify the molecular mechanisms underlying miR-93's function in cancer.
Main Methods:
- Cell culture experiments involving miR-93 overexpression and co-culture with endothelial cells.
- In vivo studies to assess tumor growth and angiogenesis.
- Analysis of integrin-β8 as a potential target of miR-93 using gene silencing and ectopic expression.
Main Results:
- miR-93 enhanced cancer cell survival, sphere formation, and tumor growth.
- miR-93 promoted endothelial cell migration, proliferation, and tube formation, indicating pro-angiogenic activity.
- miR-93 directly targets integrin-β8, and its suppression leads to increased cell proliferation and tumor growth.
Conclusions:
- miR-93 drives tumor growth and angiogenesis by downregulating integrin-β8.
- Targeting miR-93 presents a potential therapeutic strategy to inhibit angiogenesis and tumor progression.
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