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Updated: Feb 19, 2026
Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
Identification of cell cycle-targeting microRNAs through genome-wide screens
Per Hydbring1,2, Yinan Wang3, Roman L Bogorad4
1a Department of Cancer Biology, Dana-Farber Cancer Institute, and Department of Genetics , Harvard Medical School , Boston , MA , USA.
Abstract:
By performing nine genome-wide microRNA (miRNA) screens, we recently uncovered a new class of miRNAs, which target multiple cyclins and cyclin-dependent kinases (CDKs). Systemic delivery of selected cell cycle-targeting miRNAs to mouse xenograft models resulted in potent anti-tumorigenic effects without affecting animals' health. Here, we provide an in-depth description of our miRNA screening methodology, analyses of selected cell cycle-targeting miRNAs, and discuss why miRNA therapy might be a viable therapeutic option for cancer patients.
Insights
Researchers discovered novel microRNAs (miRNAs) targeting cell cycle regulators. Systemic delivery of these miRNAs showed potent anti-tumor effects in mice without adverse health impacts, suggesting miRNA therapy potential for cancer treatment.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- MicroRNAs (miRNAs) play crucial roles in gene regulation.
- Dysregulation of cell cycle proteins like cyclins and cyclin-dependent kinases (CDKs) is a hallmark of cancer.
- Current cancer therapies often have significant side effects.
Purpose of the Study:
- To identify novel miRNAs targeting multiple cell cycle regulators.
- To evaluate the therapeutic potential of these miRNAs in preclinical cancer models.
- To describe the methodology for miRNA screening and analysis.
Main Methods:
- Performed nine genome-wide microRNA (miRNA) screens.
- Identified miRNAs targeting multiple cyclins and cyclin-dependent kinases (CDKs).
- Administered selected miRNAs systemically in mouse xenograft models.
Main Results:
- Discovered a new class of cell cycle-targeting miRNAs.
- Demonstrated potent anti-tumorigenic effects upon systemic miRNA delivery.
- Observed no adverse effects on animal health.
Conclusions:
- miRNA therapy represents a promising and potentially safe therapeutic strategy for cancer.
- Targeting cell cycle pathways with specific miRNAs can effectively inhibit tumor growth.
- The described screening methodology facilitates the discovery of novel therapeutic miRNAs.
