Project description:We used RIP-seq to sequenceWT C2C12 and the C2C12 cell line overexpressing WT PrPc to investigate the miRNAs that PrPc in them specifically binds at the fourth day of C2C12 cell differentiation
Project description:In this study, we used ChIP-seq to map Six4 binding profile in different C2C12 cell lines 24 hours after differentiation (T24). We performed ChIP-seq using two different antibodies: anti-Flag antibody in Flag-Six4 C2C12 cell line or in parental C2C12 cells; a custom-made anti-Six4 antibody in shNS C2C12 cell line (a control cell line) or shSix4 C2C12 (C2C12 with stable Six4 knockdown using short hairpin RNA). We also performed ChIP-seq in parental C2C12 cells using normal rabbit IgG. We were able to identify Six4-bound loci in C2C12 T24 that were recognized by two different antibodies and showed a decrease in peak intensity in shSix4 C2C12 compared to shNS C2C12 cells.
Project description:We newly identified skeletal muscle differentiation-associated miRNAs by comparing miRNA expression profile between C2C12 cell and Wnt4-overexpressing C2C12 cell. miR-487b, miR-3963 and miR-6412 are significantly down-regulated in differentiating C2C12 cells, and transfection of their mimics resulted in reduced expression of myogenic differentiation markers including Troponin T, myosin heavy chain fast and slow type. Single analysis for each condition (proliferating C2C12 cells, differentiating C2C12 cells, proliferating Wnt4-overexpressing C2C12 subline cells
Project description:We newly identified skeletal muscle differentiation-associated miRNAs by comparing miRNA expression profile between C2C12 cell and Wnt4-overexpressing C2C12 cell. miR-487b, miR-3963 and miR-6412 are significantly down-regulated in differentiating C2C12 cells, and transfection of their mimics resulted in reduced expression of myogenic differentiation markers including Troponin T, myosin heavy chain fast and slow type.
Project description:Background: MicroRNAs (miRNAs) are a family of small, non-coding single-stranded RNA molecules involved in post-transcriptional regulation of gene expression. As such, they are believed to play a role in regulating the step-wise changes in gene expression patterns that occur during cell fate specification of multipotent stem cells. Here, we have studied whether terminal differentiation of C2C12 myoblasts is indeed controlled by lineage-specific changes in miRNA expression. Results: Using a previously generated RNA polymerase II (Pol-II) ChIP-on-chip dataset, we show differential Pol-II occupancy at the promoter regions of six miRNAs during C2C12 myogenic versus BMP2-induced osteogenic differentiation. Overexpression of one of these miRNAs, miR-378, enhances Alp activity, calcium deposition and mRNA expression of osteogenic marker genes in the presence of BMP2. Conclusions: Our results demonstrate a previously unknown role for miR-378 in promoting BMP2-induced osteogenic differentiation. Stable C2C12 cell lines C2C12-pMirn0 and C2C12-pMirn378 were generated by lentiviral transduction of C2C12 myoblasts with a Mirn378-overexpression construct and its parent vector, respectively. C2C12-pMirn0 and C2C12-pMirn378 cells were plated at 2.5 x 10^4 cells/cm2 (day -1), cultured for 1 day in DMEM 10%NCS, then (d0) treated with or without 300 ng/ml bone morphogenetic protein 2 (BMP2) for 6 days. RNA was extracted on d0, d3 and d6 and hybridized to GeneChip Mouse Genome 430 2.0 array (Affymetrix).
Project description:In this study, we used ChIP-seq to map Six4 binding profile in different C2C12 cell lines 24 hours after differentiation (T24). We performed ChIP-seq using two different antibodies: anti-Flag antibody in Flag-Six4 C2C12 cell line or in parental C2C12 cells; a custom-made anti-Six4 antibody in shNS C2C12 cell line (a control cell line) or shSix4 C2C12 (C2C12 with stable Six4 knockdown using short hairpin RNA). We also performed ChIP-seq in parental C2C12 cells using normal rabbit IgG. We were able to identify Six4-bound loci in C2C12 T24 that were recognized by two different antibodies and showed a decrease in peak intensity in shSix4 C2C12 compared to shNS C2C12 cells. We established a C2C12 cell line with stable Six4 knockdown by short hairpin RNA (shSix4) vs. a control cell line (shNS). We also established a C2C12 cell line with stable expression of Flag-Six4-myc by infection of retroviruses expressing pBABE-Flag-Six4-myc (Flag-Six4 C2C12) vs. parental C2C12. We differentiate these cells for 24 hours before using them for ChIP-seq.
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:Background: MicroRNAs (miRNAs) are a family of small, non-coding single-stranded RNA molecules involved in post-transcriptional regulation of gene expression. As such, they are believed to play a role in regulating the step-wise changes in gene expression patterns that occur during cell fate specification of multipotent stem cells. Here, we have studied whether terminal differentiation of C2C12 myoblasts is indeed controlled by lineage-specific changes in miRNA expression. Results: Using a previously generated RNA polymerase II (Pol-II) ChIP-on-chip dataset, we show differential Pol-II occupancy at the promoter regions of six miRNAs during C2C12 myogenic versus BMP2-induced osteogenic differentiation. Overexpression of one of these miRNAs, miR-378, enhances Alp activity, calcium deposition and mRNA expression of osteogenic marker genes in the presence of BMP2. Conclusions: Our results demonstrate a previously unknown role for miR-378 in promoting BMP2-induced osteogenic differentiation.
Project description:Defining the function of TEAD transcription factors in myogenic differentiation has proved elusive due to overlapping expression and functional redundancy. Here, we show that siRNA silencing of either Tead1, Tead2 or Tead4 did not effect differentiation of primary myoblasts (PMs) while their simultaneous knockdown strongly impaired differentiation. In contrast in C2C12 cells, silencing of Tead1 or Tead4 impaired differentiation showing a differential requirement for these factors in PMs and C2C12 cells that involved both differential regulation of their expression and intracellular localisation. Through integration of Tead1 and Tead4 ChIP-seq with chromatin modifications, we identify active enhancers associated with genes activated during C2C12 cell differentiation that are bound by combinations of Tead4, Myod1 or Myog and show a signature of frequently co-occuring motifs. We show that distinct but overlapping sets of genes are deregulated by Tead silencing in C2C12 cells and PMs therefore describing for the first time in a comprehensive manner the specific and redundant regulatory roles of Tead factors in myogenic differentiation. We also performed ChIP-seq from mouse muscle in vivo identifying a set of highly transcribed muscle cell-identity genes and revealing that Tead4 binds a distinct repertoire of sites in C2C12 cells and muscle.