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MyoD and myogenin ChIP-seq in differentiated C2C12 cells

ABSTRACT: The submitted files contain ChIP-seq data for the MyoD and myogenin muscle regulatory factors in diffrentiated C2C12 cells as well as two different sonicated input samples (one from a regular 1% formaldehyde fixation and one from a dual 1%FA + 1.5 mM EGS fix).

ORGANISM(S): Mus musculus

PROVIDER: GSE44824 | GEO | 2013/06/01

SECONDARY ACCESSION(S): PRJNA192251

REPOSITORIES: GEO

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MyoD and myogenin ChIP-seq in differentiated C2C12 cells

Project description:The submitted files contain ChIP-seq data for the MyoD and myogenin muscle regulatory factors in diffrentiated C2C12 cells as well as two different sonicated input samples (one from a regular 1% formaldehyde fixation and one from a dual 1%FA + 1.5 mM EGS fix). Characterization of genome-wide MyoD and myogenin binding in C2C12 cells

2013-06-01 | E-GEOD-44824 | biostudies-arrayexpress

MyoD, Myf5, myogenin, or hrGFP expressed in 2C5/7 myoD-/-;myf5-/- fibroblast cells

Project description:Gene expression changes induced by MyoD or Myf5 were examined in a double-knockout fibroblast cell line lacking endogenous functional myoD or myf5 genes. Use of this cell line precluded the possibility of auto- or cross-activation of endogenous myoD or myf5. Myogenin or hrGFP were expressed in parallel samples as controls. Following infection with retrovirus - expressing the relevant myogenic regulatory factor (MRF) from the viral LTR promoter and hrGFP through an IRES element in the same mRNA transcript - GFP+ cells were sorted by FACS and harvested for total RNA. Keywords: other

2005-09-07 | GSE3245 | GEO

Transcription profiling of mouse 2C5/7 myoD-/-;myf5-/- fibroblast cells expressing MyoD, Myf5, myogenin, or hrGFP

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Gene Expression Profiling of siRNA Knock-Down of Six1, Six4 and Myogenin in C2C12

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Gene Expression Profiling of siRNA Knock-Down of Six1, Six4 and Myogenin in C2C12

Project description:Six1, Six4 and Myogenin are transcription factors that are known to be required for skeletal myogenesis. Currently, very little is known about the genes targeted by Six1 and Six4. Gene expression profiling when one or both transcription factors were knock-down by siRNA was performed to identify genes affected by their absence. We also hypothesized that Six1 and Six4 can work in cooperation with the myogenic regulatory factor (MRFs) family of transcription factors, such as Myogenin. Therefore, we performed the same type of experiment where the myogenin was knocked-down by siRNA to identify genes that are possibly regulated by the Six1 or Six4 in conjunction with Myogenin. C2C12 Myoblasts were transfected with siRNA against Six1, Six4, Six1 with Six4, Myogenin, or control 24h before start of differentiation. The cells were allowed to differentiate in differentiation medium for 24h and were harvested for gene expression profiling. Four replicates per siRNA were performed.

2010-07-30 | E-GEOD-19967 | biostudies-arrayexpress

ChIP-seq profiling of myogenin and p300 occupancy in the context of rexinoid signaling during early myogenic differentiation

Project description:Deciphering the molecular mechanisms underpinning myoblast differentiation is a critical step in developing the best strategy to promote muscle regeneration in patients suffering from muscle-related diseases. We have previously established that a rexinoid x receptor (RXR)-selective agonist enhances the differentiation and fusion of myoblasts through a direct regulation of MyoD expression, coupled with an augmentation of myogenin protein. Here, we found that RXR signaling modifies the chromatin state distribution of myogenin, promoting the binding preference of myogenin for poised enhancers and a distinct motif. We also found an association of myogenin with rexinoid-responsive gene expression and identified an epigenetic signature related to histone acetyltransferase p300. Moreover, RXR signaling instigates residue-specific histone acetylation at enhancers co-occupied by p300 and myogenin. Thus, genomic distribution of transcriptional regulators is an important designate for identifying novel targets as well as developing therapeutics that modulate epigenetic landscape in a selective manner to promote muscle regeneration.

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Global and gene-specific analyses show distinct roles for Myod and Myog at a common set of promoters

Project description:We used a combination of genome-wide and promoter-specific DNA binding and expression analyses to assess the functional roles of Myod and Myog in regulating the program of skeletal muscle gene expression. Our findings indicate that Myod and Myog have distinct regulatory roles at a similar set of target genes. At genes expressed throughout the program of myogenic differentiation, Myod can bind and recruit histone acetyltransferases. At early targets, Myod is sufficient for near full expression; whereas, at late expressed genes Myod initiates regional histone modification but is not sufficient for gene expression. At these late genes, Myog does not bind efficiently without Myod, however, transcriptional activation requires the combined activity of Myod and Myog. Therefore, the role of Myog in mediating terminal differentiation is, in part, to enhance expression of a subset of genes previously initiated by Myod. Keywords: Myod, Myogenin, muscle differentiation, regulatory network, gene expression

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Myogenesis MyoD

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2006-12-13 | GSE6487 | GEO

A Muscle-Specific Enhancer RNA Mediates Cohesin Recruitment and Regulates Transcription in Trans

Project description:The enhancer regions of the myogenic master regulator MyoD give rise to at least two enhancer RNAs. CEeRNA regulates transcription of the adjacent MyoD gene while DRReRNA affects expression of Myogenin in trans. We found that DRReRNA is recruited at the Myogenin locus where it colocalizes with Myogenin nascent transcripts. DRReRNA associates with the Cohesin complex and such association correlates with its transactivating properties. Despite being expressed in undifferentiated cells, Cohesin is not loaded on Myogenin until the cells start expressing DRReRNA, which is then required for Cohesin chromatin recruitment and maintenance. Functionally, depletion of either Cohesin or DRReRNA reduces chromatin accessibility, prevents Myogenin activation, and hinders muscle cell differentiation. Thus, DRReRNA ensures spatially appropriate Cohesin loading in trans to regulate gene expression.

2018-06-01 | GSE113248 | GEO

Transcriptome analysis of C2C12 cells (WT and MYOD KO) overexpressing MUNC: proliferating and differentiating conditions.

Project description:To check global changes of genes expression correlating with induction of MUNC, we stably overexpressed MUNC in WT cells and in MYOD KO cells. We compared transcriptomes of control cells and cells overexpressing MUNC and distinguished genes that are differentially expressed in different conditions

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