Article abstract
Nature Cell Biology 10, 1027 - 1038 (2008)
Published online: 10 August 2008 | doi:10.1038/ncb1762
Identification of genes that regulate epithelial cell migration using an siRNA screening approach
Kaylene J. Simpson1,3, Laura M. Selfors1, James Bui1, Angela Reynolds2, Devin Leake2, Anastasia Khvorova2 & Joan S. Brugge1
Abstract
To provide a systematic analysis of genes that regulate epithelial cell migration, we performed a high throughput wound healing screen with MCF-10A breast epithelial cells, using siRNAs targeting 1,081 human genes encoding phosphatases, kinases and proteins predicted to influence cell migration and adhesion. The primary screen identified three categories of hits: those that accelerate, those that inhibit and those that impair migration with associated effects on cell proliferation or metabolism. Extensive validation of all the hits yielded 66 high confidence genes that, when downregulated, either accelerated or impaired migration; 42 of these high confidence genes have not been previously associated with motility or adhesion. Time-lapse video microscopy revealed a broad spectrum of phenotypic changes involving alterations in the extent and nature of disruption of cell–cell adhesion, directionality of motility, cell polarity and shape, and protrusion dynamics. Informatics analysis highlighted three major signalling nodes, 
-catenin, 1-integrin and actin, and a large proportion of the genes that accelerated migration impaired cell–cell adhesion.
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, 02115.
- Dharmacon, Thermo Fisher Scientific, Colorado, 80026, USA.
- Current address: The Peter MacCallum Cancer Institute, Smorgon Family Building, St Andrews Place, East Melbourne 3002, Victoria, Australia
Correspondence to: Joan S. Brugge1 e-mail: joan_brugge@hms.harvard.edu
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