Specific and redundant roles of TEAD transcription factors in C2C12 cell and primary myoblast differentiation
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PROVIDER: PRJNA324273 | ENA |
REPOSITORIES: ENA
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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.
2017-02-17 | GSE82192 | GEO
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.
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Project description:Comparison of undifferentiated C2C12 myoblast to 4 day differentiated myotubes. Keywords: other
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Project description:In urodele amphibians, limb regeneration involves the dedifferentiation of muscle myotubes into single cells that may acquire pluripotent potential. We have employed small molecules (myoseverin and BIO) to attempt to reproduce this behavior in mammalian muscle culture. C2C12 myotubes derived from the C2C12 myoblast cell line were induced to undergo cellularization by myoseverin treatment, which destabilizes tubulin filaments. The GSK-3 inhibitor, BIO, was then used to induce dedifferentiation. Induce neuron formation; the cells were incubated with 250 nM reversine for 48 h, and neural induction media (DMEM/F12 supplemented with N2 (Invitrogen)) and 1.5 uM all-trans retinoic acid for 7 days. C2C12 murine myoblast cell line and 48 h 10 uM BIO treated C2C12 cellulate (derived by 20 M myoseverin treatment for 48 h)
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Project description:In urodele amphibians, limb regeneration involves the dedifferentiation of muscle myotubes into single cells that may acquire pluripotent potential. We have employed small molecules (myoseverin and BIO) to attempt to reproduce this behavior in mammalian muscle culture. C2C12 myotubes derived from the C2C12 myoblast cell line were induced to undergo cellularization by myoseverin treatment, which destabilizes tubulin filaments. The GSK-3 inhibitor, BIO, was then used to induce dedifferentiation. Induce neuron formation; the cells were incubated with 250 nM reversine for 48 h, and neural induction media (DMEM/F12 supplemented with N2 (Invitrogen)) and 1.5 uM all-trans retinoic acid for 7 days. C2C12 murine myoblast cell line and 48 h 10 uM BIO treated C2C12 cellulate (derived by 20 M myoseverin treatment for 48 h) C2C12 myoblasts were differentiated into myotubes with 2%horse serum in DMEM for 8 days (from 2-4 d, 10 uM AraC treatment was also used to kill any remaining myoblasts). Next, myotubes were cellularized by 20 uM myoseverin treatment for 48 h. 24 h after myoseverin treatment, myotubes were treated with 10 uM BIO for 2d.
2011-12-08 | E-GEOD-34238 | biostudies-arrayexpress
Project description:In this study, the C2C12 cell line, a model used to study myogenesis and regeneration, was allowed to differentiate from myoblast precursor cells to myotubes. Cells were harvested at 4 different timepoints to perform gene expression profiling. We identified genes that were up-regulated and down-regulated during the differentiation process.
2010-07-05 | GSE19968 | GEO
Project description:Transcriptional profiling of mouse myoblast cells comparing control vs. Mybbp1a knockdown. Stable clones of C2C12 cells harboring control or Mybbp1a-targeting shRNA were established and further pooled for analysis. Goal was to determine, based on the effects of Mybbp1a depletion on global gene expression, candidate downstream target genes of Mybbp1a, a putative transcriptional co-repressor. Two-condition experiment, control vs. Mybbp1a knockdown C2C12 cells (mixed stable clones). Biological replicates: 2.
2011-08-09 | E-GEOD-31319 | biostudies-arrayexpress
Project description:The TEAD (1-4) transcription factors comprise the conserved TEA/ATTS DNA binding domain recognising the MCAT element in the promoters of muscle-specific genes. Despite extensive genetic analysis, the function of TEAD factors in muscle differentiation has proved elusive due to redundancy amongst the family members. Expression of the TEA/ATTS DNA binding domain that acts a dominant negative repressor of TEAD factors in C2C12 myoblasts inhibits their differentiation, while selective shRNA knockdown of TEAD4 results in abnormal differentiation characterised by the formation of shortened myotubes. Chromatin immunoprecipitation coupled to array hybridisation (ChIP-chip) shows that TEAD4 occupies 867 promoters including those of myogenic miRNAs. We show that TEAD factors cooperate with MYOD1 to directly induce Myogenin, CDKN1A and Caveolin 3 expression to promote myoblast differentiation and fusion. RNA-seq identifies a novel set of TEAD4 target genes encoding muscle structural and regulatory proteins and those required for the unfolded protein response. In contrast, TEAD4 represses expression of the growth factor CTGF and Cyclin D1 to promote differentiation. Together these results show that TEAD factor activity is essential for C2C12 cell differentiation and define a novel and nonredundant role for TEAD4 in regulating the unfolded protein response. C2C12 cells were infected with retrotiviral vector expressing Flag-HA-Tagged TEAD4 or with empty control vector and selected in the continouos presence of puromycin. Infected cell populations were then differentiated for 5 days in DMEM medium with 2% horse serum and fixed in 0.4% formaldehyde.
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Project description:siRNA profiling of mouse myoblast C2C12 cells reveals PPARbeta/delta dependent differentiation
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Project description:Transcriptional profiling of mouse myoblast cells comparing control vs. Mybbp1a knockdown. Stable clones of C2C12 cells harboring control or Mybbp1a-targeting shRNA were established and further pooled for analysis. Goal was to determine, based on the effects of Mybbp1a depletion on global gene expression, candidate downstream target genes of Mybbp1a, a putative transcriptional co-repressor.
2011-08-10 | GSE31319 | GEO