Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA253130 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR1427054.fastq.gz | Fastqsanger.gz | |||
| SRR1427055.fastq.gz | Fastqsanger.gz | |||
| SRR1427056.fastq.gz | Fastqsanger.gz | |||
| SRR1427057.fastq.gz | Fastqsanger.gz | |||
| SRR1427058.fastq.gz | Fastqsanger.gz |
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Project description:Muscle denervation due to injury, disease or aging results in impaired motor function. Restoring neuromuscular communication requires axonal regrowth and regeneration of neuromuscular synapses. Muscle activity inhibits neuromuscular synapse regeneration. The mechanism by which muscle activity regulates regeneration of synapses is poorly understood. Dach2 and Hdac9 are activity-regulated transcriptional co-repressors that are highly expressed in innervated muscle and suppressed following muscle denervation. Here, we report that Dach2 and Hdac9 inhibit regeneration of neuromuscular synapses. Importantly, we identified Myog and Gdf5 as muscle-specific Dach2/Hdac9-regulated genes that stimulate neuromuscular regeneration in denervated muscle. Interestingly, Gdf5 also stimulates presynaptic differentiation and inhibits branching of regenerating neurons. Finally, we found that Dach2 and Hdac9 suppress miR206 expression, a microRNA involved in enhancing neuromuscular regeneration. RNAseq on innervated and 3 day denervated adult soleus muscle from wildtype mice is compared with that from 3 day denervated soleus muscle from Dach2/Hdac9 deleted mice to identify Dach2/Hdac9-regulated genes.
2015-10-29 | E-GEOD-58669 | biostudies-arrayexpress
Project description:Muscle denervation due to injury, disease or aging results in impaired motor function. Restoring neuromuscular communication requires axonal regrowth and regeneration of neuromuscular synapses. Muscle activity inhibits neuromuscular synapse regeneration. The mechanism by which muscle activity regulates regeneration of synapses is poorly understood. Dach2 and Hdac9 are activity-regulated transcriptional co-repressors that are highly expressed in innervated muscle and suppressed following muscle denervation. Here, we report that Dach2 and Hdac9 inhibit regeneration of neuromuscular synapses. Importantly, we identified Myog and Gdf5 as muscle-specific Dach2/Hdac9-regulated genes that stimulate neuromuscular regeneration in denervated muscle. Interestingly, Gdf5 also stimulates presynaptic differentiation and inhibits branching of regenerating neurons. Finally, we found that Dach2 and Hdac9 suppress miR206 expression, a microRNA involved in enhancing neuromuscular regeneration.
2015-10-29 | GSE58669 | GEO
Project description:Mitogen activated protein kinase (MAPK) signaling regulates differentiation of many cell types. During myogenesis in particular, p38a MAPK (MAPK14) phosphorylates multiple transcriptional regulators to modulate muscle-specific gene expression. Among the p38a MAPK modulated genes is the muscle-specific transcriptional regulator Myogenin (Myog) that is also essential to complete the muscle differentiation program, and while it is known that both p38a MAPK and Myog are critically required for myogenesis, the individual contribution of each of these proteins is poorly defined. Here we show that Myog expression (in the absence of p38a MAPK signaling) is sufficient to establish expression of many late markers of muscle differentiation and to mediate cell migration. However, Myog expression alone did not led to the formation of multinucleated muscle cells, highlighting a critical role for p38a MAPK in myoblast fusion. Using comparative microarray analysis we identified p38a MAPK-dependent genes that are not regulated by Myog We generated a stable C2C12-derived cell line (C2i-Myog) that expresses a Doxycycline (Dox)-inducible cDNA encoding Flag-tagged Myog. In this system, the chemical induction of exogenous Myog (Dox) combined with the pharmacological inhibition of p38a/b MAPK signaling by SB203580 (SB) would allow us to assess the functional contribution of these two pathways during myogenesis
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Project description:The purpose of this study is to investigate how GDF10 regulates early myoblast differentiation and fusion. We found that melatonin can enhance fibro-adipogenic progenitors (FAPs) paracrine signaling to support muscle regeneration. Through combining transcriptome analysis and single-cell transcriptome analysis, we identified GDF10 as a type of myogenic factor specifically secreted by FAPs, which plays a beneficial role in promoting muscle fiber development and regeneration. To determine the underlying mechanism by which GDF10 regulates myogenesis, we performed RNA-seq on myoblasts treated with GDF10 or vehicle for 6 hours in vitro. We found that GDF10 promoted myoblast fusion by regulating LKB1-AMPK-MYOG-MYMK signaling during differentiation. In summary, our study revealed novel insights into the mechanism by which melatonin promotes muscle regeneration by mediating the interplay between FAPs and muscle stem cells (MuSCs).
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Project description:Mitogen activated protein kinase (MAPK) signaling regulates differentiation of many cell types. During myogenesis in particular, p38a MAPK (MAPK14) phosphorylates multiple transcriptional regulators to modulate muscle-specific gene expression. Among the p38a MAPK modulated genes is the muscle-specific transcriptional regulator Myogenin (Myog) that is also essential to complete the muscle differentiation program, and while it is known that both p38a MAPK and Myog are critically required for myogenesis, the individual contribution of each of these proteins is poorly defined. Here we show that Myog expression (in the absence of p38a MAPK signaling) is sufficient to establish expression of many late markers of muscle differentiation and to mediate cell migration. However, Myog expression alone did not led to the formation of multinucleated muscle cells, highlighting a critical role for p38a MAPK in myoblast fusion. Using comparative microarray analysis we identified p38a MAPK-dependent genes that are not regulated by Myog
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Project description:To investigate the role of HDAC9 in innate immnue, we measured the gene expression profile in HDAC9-knockdown macrophages in the absence of innate stimuli by gene-chip in order to find wherther HDAC9 knockdown affect the innate immune factor. We found knockdown of HDAC9 barely affected transcription of innate immnue signaling transducers. HDAC9, as a class IIa HDAC, shuttle between the nucleus and cytoplasm. Here we showed that high expression of cytoplasmic HDAC9, maybe play a Post-translational regulation role in macrophages.
2016-11-06 | GSE74749 | GEO
Project description:Peripheral nerve injury causes muscle atrophy due to slow axonal regeneration, highlighting an unmet therapeutic need. Although neuromuscular interactions are classically viewed as unidirectionally nerve-dominated, we show that acutely denervated muscle (adMu) regulates nerve regeneration via a retrograde signaling pathway. adMu initiates a trans-tissue regulatory mechanism through extracellular vesicles (EVsadMu) that orchestrate neural energy homeostasis to accelerate regeneration. Functional profiling identifies IDH2 and CS as key metabolic enzymes within EVsadMu. Neurons treated with EVsadMu exhibit a 1.39-fold increase in NADPH/NADP+ ratio via IDH2, along with a 1.18- and 1.27-fold increase in NADH/NAD+ and FADH2/FAD ratios via CS, fueling the TCA cycle to enhance mitochondrial bioenergetics. This restores redox balance and energy supply, driving axonal regeneration. In sciatic nerve injury models, EVadMu-microneedle conduits significantly promote energy metabolism and functional recovery. Together, our findings position adMu as a metabolic signaling center enabling retrograde regulation for nerve regeneration, offering potential for clinical translation.
2025-12-02 | PXD071459 |
Project description:Peripheral nerve injury causes muscle atrophy due to slow axonal regeneration, highlighting an unmet therapeutic need. Although neuromuscular interactions are classically viewed as unidirectionally nerve-dominated, we show that acutely denervated muscle (adMu) regulates nerve regeneration via a retrograde signaling pathway. adMu initiates a trans-tissue regulatory mechanism through extracellular vesicles (EVsadMu) that orchestrate neural energy homeostasis to accelerate regeneration. Functional profiling identifies IDH2 and CS as key metabolic enzymes within EVsadMu. Neurons treated with EVsadMu exhibit a 1.39-fold increase in NADPH/NADP+ ratio via IDH2, along with a 1.18- and 1.27-fold increase in NADH/NAD+ and FADH2/FAD ratios via CS, fueling the TCA cycle to enhance mitochondrial bioenergetics. This restores redox balance and energy supply, driving axonal regeneration. In sciatic nerve injury models, EVadMu-microneedle conduits significantly promote energy metabolism and functional recovery. Together, our findings position adMu as a metabolic signaling center enabling retrograde regulation for nerve regeneration, offering potential for clinical translation.
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Project description:Peripheral nerve injury causes muscle atrophy due to slow axonal regeneration, highlighting an unmet therapeutic need. Although neuromuscular interactions are classically viewed as unidirectionally nerve-dominated, we show that acutely denervated muscle (adMu) regulates nerve regeneration via a retrograde signaling pathway. adMu initiates a trans-tissue regulatory mechanism through extracellular vesicles (EVsadMu) that orchestrate neural energy homeostasis to accelerate regeneration. Functional profiling identifies IDH2 and CS as key metabolic enzymes within EVsadMu. Neurons treated with EVsadMu exhibit a 1.39-fold increase in NADPH/NADP+ ratio via IDH2, along with a 1.18- and 1.27-fold increase in NADH/NAD+ and FADH2/FAD ratios via CS, fueling the TCA cycle to enhance mitochondrial bioenergetics. This restores redox balance and energy supply, driving axonal regeneration. In sciatic nerve injury models, EVadMu-microneedle conduits significantly promote energy metabolism and functional recovery. Together, our findings position adMu as a metabolic signaling center enabling retrograde regulation for nerve regeneration, offering potential for clinical translation.
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Project description:To understand the underlying molecular mechanism of Hdac9-mediated inflammasome activation and motivated by the molecular scaffolding function of HDAC9, we pursued the hypothesis that HDAC9 may serve as a docking site for cytosolic inflammasome components thereby facilitating its rapid formation upon stimulation. We tested this by performing co-immunoprecipitation experiments coupled with mass spectrometry to assess subunits of the inflammasome that interact with HDAC9.
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