Related Experiment Video
Updated: Jul 22, 2026
A Multiplexed Luciferase-based Screening Platform for Interrogating Cancer-associated Signal Transduction in Cultured Cells
Published on: July 3, 2013
Dissecting cancer pathways and vulnerabilities with RNAi
T F Westbrook1, F Stegmeier, S J Elledge
1Howard Hughes Medical Institute, Department of Genetics, Harvard Partners Center for Genetics and Genomics, Harvard Medical School, Boston, Massachusetts 02115, USA.
Abstract:
The latest generation of molecular-targeted cancer therapeutics has bolstered the notion that a better understanding of the networks governing cancer pathogenesis can be translated into substantial clinical benefits. However, functional annotation exists for only a small proportion of genes in the human genome, raising the likelihood that many cancer-relevant genes and potential drug targets await identification. Unbiased genetic screens in invertebrate organisms have provided substantial insights into signaling networks underlying many cellular and organismal processes. However, such approaches in mammalian cells have been limited by the lack of genetic tools. The emergence of RNA interference (RNAi) as a mechanism to suppress gene expression has revolutionized genetics in mammalian cells and has begun to facilitate decoding of gene functions on a genome scale. Here, we discuss the application of such RNAi-based genetic approaches to elucidating cancer-signaling networks and uncovering cancer vulnerabilities.
Insights
Identifying novel cancer genes and drug targets is crucial. RNA interference (RNAi) in mammalian cells enables genome-scale functional studies, aiding the discovery of cancer-signaling networks and vulnerabilities.
Area of Science:
- Genetics
- Molecular Biology
- Cancer Research
Background:
- Molecular-targeted cancer therapies rely on understanding cancer pathogenesis networks.
- Functional annotation of human genes is incomplete, leaving many cancer-relevant genes undiscovered.
- Genetic screens in invertebrates offer insights but lack tools in mammalian cells.
Purpose of the Study:
- To discuss the application of RNA interference (RNAi) for cancer gene discovery.
- To explore RNAi-based approaches for elucidating cancer-signaling networks.
- To identify potential cancer vulnerabilities using genome-scale genetic screens.
Main Methods:
- Utilizing RNA interference (RNAi) for gene expression suppression in mammalian cells.
- Applying genome-scale genetic screens to identify cancer-relevant genes.
- Analyzing signaling networks involved in cancer pathogenesis.
Main Results:
- RNAi has revolutionized mammalian genetics, enabling large-scale functional gene decoding.
- RNAi facilitates the identification of previously unknown cancer-relevant genes.
- This approach aids in uncovering critical cancer vulnerabilities.
Conclusions:
- RNAi-based genetic approaches are powerful tools for cancer research.
- Understanding cancer networks through RNAi can lead to new therapeutic targets.
- Further application of RNAi will enhance the discovery of cancer vulnerabilities.
Related Concept Videos
01:23RNA Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
02:30siRNA - Small Interfering RNAs
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...
02:15Experimental RNAi
01:22MicroRNAs