Objective Hematopoietic differentiation proceeds through a series of binary decisions where lymphoid and myeloid precursors are specified first, followed by more restricted bi- and monopotent progenitors. Each step involves extinction of the original gene expression program and establishment of a novel gene expression program. This is thought to be accomplished by both antagonistic and synergistic transcription factor interactions that establish cell type specific transcription factor combinations. Recent work from t he host laboratory demonstrated that enforced expression in B cells of either the C/EBPa or C/EBPb transcription factor reprograms these cells into macrophages by a series of paralell and sequential events that require endogenous PU.1. The proposed researc h project aims at dissecting the process of trans-differentiation in this system through analysing the changes that occur both at the level of gene expression and of transcription factor occupacy of target gene promoters. For these studies I will use B cel ls infected with an inducible form of C/EBP which will permit to observe the changes in gene expression over time, using Affymetrix-microarrays and quantitave PCR. To identify C/EBP and PU.1 target genes in B cells and macrophages I will use a "ChIP-on-chi p" approach. Results obtained should lead to a better understanding of the lymphoid and myeloid cell branching process and the molecular events accompanying reprogramming of one differentiated cell type into another. Fields of science natural sciencesbiological sciencesbiochemistrybiomoleculesproteins Programme(s) FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006 Topic(s) MOBILITY-2.1 - Marie Curie Intra-European Fellowships (EIF) Call for proposal FP6-2002-MOBILITY-5 See other projects for this call Funding Scheme EIF - Marie Curie actions-Intra-European Fellowships Coordinator CENTER FOR GENOMIC REGULATION EU contribution No data Address Passeig Maritim 37-49 BARCELONA Spain See on map Links Website Opens in new window Total cost No data
