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Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
The multiple roles of microRNA-155 in oncogenesis
1Yale Center for Medical Informatics, Yale University, Suite 505, 300 George Street, New Haven, USA. gadareth.higgs@yale.edu.
Abstract:
The microRNA miR-155 is prominent in cancer biology. Among microRNAs that have been linked to cancer, it is the most commonly overexpressed in malignancies (PNAS 109:20047-20052, 2012). Since its discovery, miR-155 has been implicated in promoting cancers of the breast, lung, liver, and lymphatic system. As such, targeted therapies may prove beneficial to cancer treatment. This review discusses the important role of miR-155 in oncogenesis. It synthesizes information from ten recent papers on miR-155, and includes an analysis and discussion of its association with cancer, interactions with other miRNAs, mechanisms of action, and the most promising available treatment options.Current debates in the field include the importance of miRNAs in general and their utility as targets in preventing tumorigenesis (Blood 119:513-520, 2012). Most of the papers being reviewed here confirm the role of miR-155 in oncogenesis (EMBO Mol Med 1:288-295, 2009). While there is some controversy surrounding recent research that claims that miR-155 may display anti-oncogenic or pro-immunological benefits (Cell Rep 2:1697-1709, 2012), most research seems to point to the importance of anti-miRs, with anti-miR-155 in particular, for cancer therapy.
Insights
MicroRNA miR-155 is frequently overexpressed in cancers and promotes oncogenesis. Anti-miR-155 therapies show promise for cancer treatment, despite some debate on miR-155
Area of Science:
- Molecular Biology
- Oncology
- Gene Regulation
Background:
- MicroRNA miR-155 is a key player in cancer biology, notably overexpressed in many malignancies.
- miR-155 has been linked to the promotion of various cancers, including breast, lung, liver, and lymphatic system cancers.
- The role of microRNAs (miRNAs) in tumorigenesis is an active area of research and debate.
Purpose of the Study:
- To review and synthesize recent research on the role of miR-155 in oncogenesis.
- To analyze miR-155's association with cancer, its interactions with other miRNAs, and mechanisms of action.
- To discuss promising therapeutic strategies targeting miR-155.
Main Methods:
- Literature review synthesizing information from ten recent scientific papers.
- Analysis of existing data on miR-155's role in cancer development.
- Discussion of current controversies and therapeutic implications.
Main Results:
- The majority of reviewed studies confirm miR-155's oncogenic role.
- miR-155 is implicated in promoting breast, lung, liver, and lymphatic cancers.
- Emerging research suggests potential anti-oncogenic or pro-immunological roles for miR-155, though this is debated.
Conclusions:
- miR-155 plays a significant role in oncogenesis across multiple cancer types.
- Targeted therapies, particularly anti-miR-155 strategies, represent promising avenues for cancer treatment.
- Further research is needed to fully elucidate miR-155's complex functions and therapeutic potential.
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