Needling on Trigger Point Promotes Muscle Regeneration after Bupivacaine Injection Induced Gastrocnemius Muscle Injury via RNA sequencing analysis
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE140857 | GEO | 2022/11/22
REPOSITORIES: GEO
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Project description:MicroRNAs (miRNAs) are important in the regulation of many biological processes including muscle development. However, little is known regarding miRNA regulation of muscle regeneration. In mature murine tibialis anterior muscle following injury, 298 miRNAs were significantly changed during the time course of muscle regeneration including 86 that were altered greater than 10-fold as compared to uninjured muscle. Temporal miRNA expression patterns were identified and included inflammation-related miRNAs (miR-223 and -147) that increased immediately after injury; this pattern contrasted to that of mature muscle-specific miRNAs (miR-1, -133a and -499) that were abruptly decreased following injury and then up-regulated in later regenerative events. Another cluster of miRNAs were transiently increased in the early days of muscle regeneration. This included miR-351, a miRNA that was also transiently expressed during myogenic progenitor cell (MPC) differentiation in vitro. Based on computational predictions, further studies demonstrated that E2f3 was a target of miR-351 in myoblasts. Moreover, knockdown of miR-351 expression inhibited MPC proliferation and promoted apoptosis during MPC differentiation, whereas miR-351 overexpression protected MPC from apoptosis during differentiation. Collectively, these observations suggest that miR-351 is involved in both the maintenance of MPC proliferation and the transition of MPC into differentiated myotubes. Thus, a novel, time-dependent sequence of molecular events during skeletal muscle regeneration has been identified, i.e., miR-351 inhibits E2f3 expression, a key regulator of cell cycle progression and proliferation, and promotes MPC proliferation and protects early differentiating MPC from apoptosis, important events in the hostile tissue environment after acute muscle injury. Skeletal muscles are damaged and repaired repeatedly throughout life. Muscle regeneration maintains locomotor function during aging and delays the appearance of clinical symptoms in neuromuscular diseases, such as Duchenne muscular dystrophy. The capacity for skeletal muscle growth and regeneration is conferred by satellite cells located between the basal lamina and the sarcolemma of mature myofibers. Upon injury, satellite cells reenter the cell cycle, proliferate, and then exit the cell cycle either to renew the quiescent satellite cell pool or to differentiate into mature myofibers. Despite recent advances, genes involved in these processes are still largely unknown. Understanding the molecular mechanisms that regulate satellite cell activities could promote development of novel countermeasures to enhance muscle regeneration that is compromised by diseases or aging. Using a muscle injury mouse model, we profiled miRNA expression during muscle regeneration.
2012-04-24 | E-GEOD-37479 | biostudies-arrayexpress
Project description:Purpose: We used RNA sequencing to investigate the effect of acupuncture treatment on retinal transcritome after optic nerve injury Methods: Retinal mRNA profiles of 5-week-old wild-type (WT), optic nerve crush injury (ONC), ONC injury with acupuncture treatment at acupoint GB20 (ONC-F) and ONC injury with acupuncture treatment at acupoint BL1 (ONC-J) mice were generated by deep sequencing, in triplicate, using Illumina Hiseq platform. The sequence reads that passed quality filters were analyzed with DESeq2 R package to identify differently expressed genes with padj<0.05. qRT–PCR validation was performed using TaqMan and SYBR Green assays Results: RNA-seq revealed that 436 genes including 31 transcription factors (TFs) were changed after injury, which include many well-known neural degeneration related TFs such as Jun, Ddit3, Atf3 and Atf4. Interestingly, acupuncture treatment at acupoint GB20 (Fengchi) or BL1(Jingming) after ONC injury both resulted in change of retinal gene expression, compared with ONC injury without treatment; furthermore, acupuncture treatment also reversed several gene expression status induced by axon injury. Conclusions: Our research first reported that acupuncture treatment after injury can regulated retinal transcriptome and reversed the gene expression level induced after injury, which will provide novel therapeutic targets for treatment of retinopathy diseases.
2019-11-12 | GSE131486 | GEO
Project description:Healthy skeletal muscle can regenerate after ischaemic, mechanical, or toxin-induced injury, but ageing impairs that regeneration potential. This has been largely attributed to dysfunctional satellite cells and reduced myogenic capacity. Understanding which signalling pathways are associated with reduced myogenesis and impaired muscle regeneration can provide valuable information about the mechanisms driving muscle ageing and prompt the development of new therapies. To investigate this, we developed a high-throughput in vitro model to assess muscle regeneration in chemically injured C2C12 and human myotube-derived young and aged myoblast cultures. We observed a reduced regeneration capacity of aged cells, as indicated by an attenuated recovery towards preinjury myotube size and myogenic fusion index at the end of the regeneration period, in comparison with younger muscle cells that were fully recovered. RNA-sequencing data showed significant enrichment of KEGG signalling pathways, PI3K-Akt, and downregulation of GO processes associated with muscle development, differentiation, and contraction in aged but not in young muscle cells. Data presented here suggests that repair in response to in vitro injury is impaired in aged vs. young muscle cells. Our study establishes a framework that enables further understanding of the factors underlying impaired muscle regeneration in older age.
2023-07-05 | E-MTAB-12248 | biostudies-arrayexpress
Project description:Utilizing glycerol intramuscular injections in M. musculus provide a models of skeletal muscle damage followed by skeletal muscle regeneration. In particular, glycerol-induced muscle injury triggers accute activation of skeletal muscle stem cells, called satellite cells. However, aging dramatically impairs the regenerative capacity of satellite cells. We characterized genome-wide expression profiles of young and old satellite cells in the non-proliferative and activated state, freshly isolated to non-injured or damaged muscles, respectively. Our goal was to uncover new regulatory signaling specific to satellite cells entry into the activation and myogenic program that are affected with age. Satellite cells were isolated in either quiescent / non-proliferative or activated state from uninjured or 3 days after glycerol-induced injury of tibialis anterior, gastrocnemius and quadriceps, respectively. Young (2-4 months old) and old (20-24 months old) wildtype C57BL/6J male were used, with five to six biological replicates per group.
2016-07-04 | E-GEOD-81096 | biostudies-arrayexpress
Project description:Adult skeletal muscle regeneration is mainly driven by muscle stem cells (MuSCs), which are highly heterogeneous. Although recent studies have started to characterize the heterogeneity of MuSCs, whether a subset of cells with distinct exists within MuSCs remains unanswered. Here, we found that a population of MuSCs, marked by Gli1 expression, is required for muscle regeneration. The Gli1+ MuSC population displayed advantages in proliferation and differentiation both in vitro and in vivo. Depletion of this population led to delayed muscle regeneration, while transplanted Gli1+ MuSCs supported muscle regeneration more effectively than Gli1- MuSCs. Further analysis revealed that even in the uninjured muscle, Gli1+ MuSCs had elevated mTOR signaling activity, increased cell size and mitochondrial numbers compared to Gli1- MuSCs, indicating Gli1+ MuSCs are displaying the features of primed MuSCs. Moreover, Gli1+ MuSCs greatly contributed to the formation of GAlert cells after muscle injury. Collectively, our findings demonstrate that Gli1+ MuSCs represent a distinct MuSC population which is more active in the homeostatic muscle and enters the cell cycle shortly after injury. This cell population functions as the tissue-resident sentinel that rapidly responds to injury and initiates muscle regeneration.
2023-08-06 | GSE239944 | GEO
Project description:We describe the effects of Treg ST2 expression on muscle regeneration. We compare regneration from cryo-injured tibialis anterior muscle from Foxp3-Cre/ST2-flox vs Foxp3-Cre mice 8 days post-injury. These analyses from whole muscle provide insight into the role of muscle Tregs in the context of regeneration. The tibialis anterior muscle from male Foxp3-Cre/ST2 flox or Foxp3-Cre/ST2 WT C57BL/6 mice (2 months old) were cryo-injured using a liquid nitrogen chilled metal probe for 8 seconds. 8 days post-injury whole muscle was harvested and snap frozen in liquid nitrogen. Whole muscle was then homogenized directly in TriZol and gene expression profiling was performed on Affymetrix Mouse Gene 1.0 ST Arrays.
2016-01-10 | E-GEOD-76697 | biostudies-arrayexpress
Project description:We identified genes expressed in mouse skeletal muscle, during the process of muscle regeneration after injury, which are dysregulated in the absence of Mef2a expression. MEF2A is a member of the evolutionarily conserved MEF2 transcription factor family which has known roles in cardiac muscle development and function, but is not well studied in skeletal muscle. We performed a comparison of gene expression profiles in wild type and MEF2A knockout tibialis anterior muscle, seven days post-injury with cardiotoxin. The results indicated that a variety of genes expressed during muscle regeneration, predominantly microRNAs in the Gtl2-Dio3 locus, are dysregulated by the loss of MEF2A expression. Skeletal muscle RNA used in the present study included the following two sample groups: (WT) pooled total RNA from tibialis anterior muscle taken from 5 wild type mice at seven days post-injury with 10uM cardiotoxin; (KO) pooled total RNA from tibialis anterior muscle taken from 5 Mef2a knockout mice at seven days post-injury with 10uM cardiotoxin. All mice were between 2-4 months of age. Both male and female mice were used.
2013-02-12 | E-GEOD-41871 | biostudies-arrayexpress
Project description:Circadian rhythms regulate cell differentiation and tissue regeneration; however, their implications in tissue regeneration remain elusive. Here, we present evidence that tissue regeneration efficiency is dependent on the circadian timing of injury affliction in a mouse model of muscle injury. We found that depletion of Per1 or Per2, members of the core circadian regulators in vertebrates, impaired mouse muscle regeneration and myoblast differentiation. Both Per1 and Per2 were necessary to maintain the expression level of Igf2, one of the critical regulators for myoblast differentiation, through epigenetic regulation at the Igf2 promoter and enhancer. Reflecting this, myoblast differentiation was promoted when differentiation was initiated while the level of Pers and Igf2 were high, compared with the time when their expression levels were low. Furthermore, muscle regeneration in the mouse was more efficient when chemical injury was inflicted at night when Pers were highly expressed, compared with morning injury. This study uncovers circadian timing-based control of myoblast differentiation and muscle regeneration.
2021-04-27 | GSE150785 | GEO
Project description:Skeletal muscle function and regenerative capacity decline during aging, yet factors driving these changes are incompletely understood. Muscle regeneration requires temporally coordinated transcriptional programs to drive myogenic stem cells to activate, proliferate, fuse to form myofibers, and to mature myonuclei, restoring muscle function after injury. We assessed global changes in myogenic transcription programs distinguishing muscle regeneration in aged mice from young mice by comparing pseudotime trajectories from single-nucleus RNA sequencing of myogenic nuclei. Aging-specific differences in coordinating myogenic transcription programs necessary for restoring muscle function occur following muscle injury, likely contributing to compromised regeneration in aged mice. Differences in pseudotime alignment of myogenic nuclei when comparing aged to young mice via Dynamic Time-Warping revealed pseudotemporal differences becoming progressively more severe as regeneration proceeds. Disruptions in timing of myogenic gene expression programs may contribute to incomplete skeletal muscle regeneration and declines in muscle function as organisms age.
2023-06-12 | GSE180225 | GEO
Project description:We describe the effects of Treg ST2 expression on muscle regeneration. We compare regneration from cryo-injured tibialis anterior muscle from Foxp3-Cre/ST2-flox vs Foxp3-Cre mice 8 days post-injury. These analyses from whole muscle provide insight into the role of muscle Tregs in the context of regeneration.
2016-01-10 | GSE76697 | GEO