Project description:Genome-wide methylation profiling of mouse 3T3-L1 Cells comparing control wildtypes with cells stable transfected with slincRAD shRNA8 (sh8). Two-condition experiment, 3T3-L1 wildtype vs. slincRAD-shRNA8 stable transfected cells before and after Adipogenesis. One replicate per array.
Project description:Differentiation of 3T3-L1 cells into adipocytes involves a highly orchestrated series of events including clonal expansion, growth arrest and terminal differentiation. The mechanisms coordinating these different steps are not yet fully understood. Here we investigated whether micro (mi)RNAs play a role in this process. Microarray analysis was performed to detect miRNA expression during 3T3-L1 preadipocyte differentiation. Several miRNAs, including let-7, were up-regulated during 3T3-L1 adipogenesis. Ectopic introduction of let-7 into 3T3-L1 cells inhibited clonal expansion as well as terminal differentiation. The mRNA encoding high mobility group AT-hook 2 (HMGA2), a transcription factor that regulates growth and proliferation in other contexts, was inversely correlated with let-7 levels during 3T3-L1 cell adipogenesis, and let-7 markedly reduced HMGA2 concentrations. Knockdown of HMGA2 inhibited 3T3-L1 differentiation. These results suggest that let-7 plays an important role in adipocyte differentiation and that it does so in part by targeting HMGA2, thereby regulating the transition from clonal expansion to terminal differentiation.
Project description:Paral1 is a novel adipocyte-specific lincRNA upregulated during adipogenesis of 3T3-L1 cells. Knockdown of Paral1 by siRNA transfection in 3T3-L1 cells followed by transcriptomic analyses was performed.
