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Updated: Feb 18, 2026
A Multiplexed Luciferase-based Screening Platform for Interrogating Cancer-associated Signal Transduction in Cultured Cells
Published on: July 3, 2013
Discovering cancer vulnerabilities using high-throughput micro-RNA screening
Iva Nikolic1,2,3, Benjamin Elsworth1,2, Eoin Dodson1,2
1The Kinghorn Cancer Centre & Cancer Research Division, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia.
Abstract:
Micro-RNAs (miRNAs) are potent regulators of gene expression and cellular phenotype. Each miRNA has the potential to target hundreds of transcripts within the cell thus controlling fundamental cellular processes such as survival and proliferation. Here, we exploit this important feature of miRNA networks to discover vulnerabilities in cancer phenotype, and map miRNA-target relationships across different cancer types. More specifically, we report the results of a functional genomics screen of 1280 miRNA mimics and inhibitors in eight cancer cell lines, and its presentation in a sophisticated interactive data portal. This resource represents the most comprehensive survey of miRNA function in oncology, incorporating breast cancer, prostate cancer and neuroblastoma. A user-friendly web portal couples this experimental data with multiple tools for miRNA target prediction, pathway enrichment analysis and visualization. In addition, the database integrates publicly available gene expression and perturbation data enabling tailored and context-specific analysis of miRNA function in a particular disease. As a proof-of-principle, we use the database and its innovative features to uncover novel determinants of the neuroblastoma malignant phenotype.
Insights
This study maps micro-RNA (miRNA) functions across cancers using a large-scale genomics screen. The findings reveal new cancer vulnerabilities and provide a resource for personalized miRNA-based therapies.
Area of Science:
- Molecular Biology
- Genomics
- Cancer Research
Background:
- Micro-RNAs (miRNAs) are key regulators of gene expression and cellular functions, influencing processes like survival and proliferation.
- Understanding miRNA networks is crucial for identifying cancer vulnerabilities and therapeutic targets.
Purpose of the Study:
- To discover cancer vulnerabilities by mapping miRNA-target relationships across diverse cancer types.
- To create a comprehensive resource detailing miRNA function in oncology.
Main Methods:
- A functional genomics screen of 1280 miRNA mimics and inhibitors was conducted across eight cancer cell lines.
- Data was integrated into an interactive web portal with tools for miRNA target prediction, pathway analysis, and visualization.
- Publicly available gene expression and perturbation data were incorporated for context-specific analyses.
Main Results:
- The study presents the most extensive survey of miRNA function in oncology to date, including breast cancer, prostate cancer, and neuroblastoma.
- The interactive portal facilitates exploration of miRNA-target interactions and their functional consequences.
- Novel determinants of the neuroblastoma malignant phenotype were identified using the database.
Conclusions:
- This research establishes a comprehensive resource for studying miRNA function in cancer.
- The findings highlight the potential of exploiting miRNA networks to uncover cancer-specific vulnerabilities.
- The developed tools enable tailored, context-specific analyses for advancing miRNA-based cancer research and therapy.
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