title: An in vivo functional genetic screen for suppressors of the Rag1-/- T-cell defect.
abstract: Functional genetic screens on mutant backgrounds have been successfully used in lower organisms to investigate biological processes. However, few identical screens have been performed in mice. Recombinase activating gene-1 deficient (Rag1-/-) mice have a severe T-cell developmental block owing to lack of rearrangement of their T-cell receptor (TCR) genes. Using a retroviral cDNA library derived from wild-type embryonic thymocytes we performed a suppressor screen in Rag1-/- hematopoietic cells and recovered TCRbeta. This is the first demonstration that targeted genetic screens are feasible using transduced primary cells in vivo. Consequently, this technique can be used to interrogate multiple blood lineages using diverse hematopoietic mouse mutants.
authors.affiliation: Cancer Biology Division, Telethon Institute for Child Health Research, Subiaco, Western Australia, Australia.
authors.forename: Angela C
authors.initials: AC
authors.lastname: Chan
authors.forename: Monique F M A
authors.initials: MF
authors.lastname: Smeets
authors.forename: David J
authors.initials: DJ
authors.lastname: Izon
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000235:genetics* / Q000276:immunology; D003001:Cloning, Molecular; D019674:Genes, T-Cell Receptor beta / Q000235:genetics* / Q000276:immunology; D006412:Hematopoietic Stem Cells / Q000276:immunology; D018398:Homeodomain Proteins / Q000235:genetics* / Q000276:immunology; D051379:Mice; D012190:Retroviridae; D013601:T-Lymphocytes / Q000276:immunology; D014161:Transduction, Genetic