Large-Scale RNAi Screens Identify Novel Genes that Interact with the C. Elegans Retinoblastoma Pathway as well as Splicing-Related Components with synMuv B Activity

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Large-Scale RNAi Screens Identify Novel Genes that Interact with the C. Elegans Retinoblastoma Pathway as well as Splicing-Related Components with synMuv B Activity

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Title: Large-Scale RNAi Screens Identify Novel Genes that Interact with the C. Elegans Retinoblastoma Pathway as well as Splicing-Related Components with synMuv B Activity
Author: Ceron, Julian; Rual, Jean-François; Chandra, Abha; Dupuy, Denis; van den Heuvel, Sander; Vidal, Marc

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Citation: Ceron, Julian, Jean-François Rual, Abha Chandra, Denis Dupuy, Marc Vidal, and Sander van den Heuvel. 2007. Large-scale RNAi screens identify novel genes that interact with the C. elegans retinoblastoma pathway as well as splicing-related components with synMuv B activity. BMC Developmental Biology 7: 30.
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Abstract: Background: The retinoblastoma tumor suppressor (Rb) acts in a conserved pathway that is deregulated in most human cancers. Inactivation of the single Rb-related gene in Caenorhabditis elegans, lin-35, has only limited effects on viability and fertility, yet causes changes in cell-fate and cell-cycle regulation when combined with inactivation of specific other genes. For instance, lin-35 Rb is a synthetic multivulva (synMuv) class B gene, which causes a multivulva phenotype when inactivated simultaneously with a class A or C synMuv gene. Results: We used the ORFeome RNAi library to identify genes that interact with C. elegans lin-35 Rb and identified 57 genes that showed synthetic or enhanced RNAi phenotypes in lin-35 mutants as compared to rrf-3 and eri-1 RNAi hypersensitive mutants. Based on characterizations of a deletion allele, the synthetic lin-35 interactor zfp-2 was found to suppress RNAi and to cooperate with lin-35 Rb in somatic gonad development. Interestingly, ten splicing-related genes were found to function similar to lin-35 Rb, as synMuv B genes that prevent inappropriate vulval induction. Partial inactivation of specific spliceosome components revealed further similarities with lin-35 Rb functions in cell-cycle control, transgene expression and restricted expression of germline granules. Conclusion: We identified an extensive series of candidate lin-35 Rb interacting genes and validated zfp-2 as a novel lin-35 synthetic lethal gene. In addition, we observed a novel role for a subset of splicing components in lin-35 Rb-controlled processes. Our data support novel hypotheses about possibilities for anti-cancer therapies and multilevel regulation of gene expression.
Published Version: doi:10.1186/1471-213X-7-30
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1863419/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4853390

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