Project description:MicroRNAs (miRNAs) play a critical role in cells differentiation by targeting protein coding genes. The expression level of miRNA and mRNA between D0 and D4 differentiated C2C12 showed a great significance. It is closely related to myogenesis, and is helpful to understand function of miRNAs and disease related to muscle. We performed microarray and transcriptome profiling in differentiating C2C12 cells cells (at 0 and 4 days named D0 and D4, respectively) to detail the expression of mRNA and miRNAs during differentiation.
Project description:The goal of this study was to identify genes in C2C12 myoblasts whose expression was altered by overexpression of Smad3. Four total samples were analyzed. Two biological replicates were prepared from C2C12 cells infected with retroviral vector encoding wildtype Smad3 and exposed for 24 hours to 100 pM TGF-β. Two biological replicates were prepared from C2C12 cells infected with a control retrovirus that did not encode Smad3 (empty vector, EV) and exposed for 24 hours to 100pM TGF-β. To identify genes with altered expression between empty vector controls and cells overexpressing wild-type Smad3, we first pre-processed the four arrays using robust multiarray averaging as implemented in the R software package ‘xps’, version 1.10.2 (http://www.bioconductor.org/packages/release/bioc/html/xps.html). This preprocessing corrects for background noise and array effects, and aggregates probe data to 28,836 genes. Duplicates were averaged on the base-2 logarithm scale, and then we took differences between the averages to obtain logarithm-scale fold changes. Genes were selected which showed at least a two-fold change (raw scale) between wild-type and empty vector expressing cells. Due to the limited sample size, we did not apply any statistical tests to estimate false-discovery rate. This resulted in 79 genes that were at least two-fold higher in the wild-type Smad3-expressing C2C12 cells compared to empty vector cells and 25 genes that were at least two-fold lower in the wild-type Smad3-expressing cells than the in the empty vector cells.
Project description:The expression level of mRNA after knocking-down lncRNA-MEG3 showed a great significance. We performed microarray and transcriptome profiling in C2C12 cells after transfection lncRNA-MEG3 48 hours later to detail the expression of mRNA after knocking-down lncRNA-MEG3.
Project description:Transcriptomic changes induced by DUX4 expression were compared between human and mouse cell lines of muscle lineage. We used microarrays to compare transcripts induced in human rhabdmyosarcoma and mouse C2C12 cells ectopically expressing DUX4.
Project description:Transcriptomic changes induced by DUX4 expression were compared between human and mouse cell lines of muscle lineage. We used microarrays to compare transcripts induced in human rhabdmyosarcoma and mouse C2C12 cells ectopically expressing DUX4. Human rhabdomyosarcoma and mouse C2C12 cells were transfected with DUX4 expression vectors (n=4). Cells transfected with insertless vectors were used as controls. Samples were processed for RNA extraction 16 hours following transfection.
