Ask about this productRelated genes to: PAX7 antibody
- Gene:
- PAX7 NIH gene
- Name:
- paired box 7
- Previous symbol:
- -
- Synonyms:
- Hup1
- Chromosome:
- 1p36.13
- Locus Type:
- gene with protein product
- Date approved:
- 1992-11-20
- Date modifiied:
- 2014-11-18
Related products to: PAX7 antibody
Related articles to: PAX7 antibody
- Glucocorticoid-induced myopathy is characterized by progressive muscle atrophy and impaired regeneration, yet effective microbiota-oriented interventions for preserving muscle homeostasis remain largely unexplored. Here, we demonstrate that dietary chondroitin sulfate (DCS) restores muscle mass and function through a microbiota-dependent gut-muscle metabolic axis. DCS failed to confer protection in germ-free or antibiotic-treated mice, establishing gut microbiota as a prerequisite for its efficacy. Microbiota transplantation and mono-colonization experiments identified Z-RW as a functionally relevant mediator capable of recapitulating muscle protection under controlled microbial conditions. Integrated metagenomic, metabolomic, and proteomic analyses revealed coordinated reprogramming of intestinal sugar utilization and bile acid metabolism following DCS administration. Notably, DCS promoted bile acid deconjugation and enrichment of secondary bile acids, coinciding with restoration of muscle regenerative and energetic programs, including upregulation of NMRK2, PAX7, and SIRT1. Metabolite supplementation further implicated bile acids as candidate mediators linking microbial metabolism to muscle phenotypes. To quantitatively integrate these shifts, we introduce the sugar-bile acid ratio as a systems-level descriptor of microbiota-driven metabolic remodeling. Our findings delineate a microbiota-dependent metabolic framework through which a functional polysaccharide reshapes intestinal biochemistry to influence distal muscle physiology. This work highlights bile acid-associated signaling as a central relay within the gut-muscle axis and provides a conceptual foundation for microbiota-targeted strategies to mitigate muscle wasting. - Source: PubMed
Publication date: 2026/03/12
Wu RuiyunWen TaoShang NanXie PenghaoWang ZhenyuLi HangLi ShaoboZhang Dequan - Skeletal muscle possesses a remarkable capacity for regeneration, driven by the activation and proliferation of Pax7-positive muscle stem cells within a dynamic niche that includes immune cells, fibro-adipogenic progenitors, endothelial cells, pericytes, and neural elements. Cellular senescence, a stress-induced program featuring stable cell-cycle arrest and the senescence-associated secretory phenotype (SASP), has emerged as a critical yet paradoxical regulator of this process. Accumulating evidence indicates that transient senescence, particularly in FAPs, macrophages, and other niche cells during acute muscle injury, plays a beneficial role in supporting muscle regeneration. These senescent cells promote cellular plasticity, enhance myoblast differentiation, facilitate phagocytic clearance of debris, and modulate inflammation and repair via timely SASP factor secretion. However, conflicting findings suggest that senescent cells exert detrimental effects, impairing regeneration by establishing a sustained pro-inflammatory and pro-fibrotic niche, especially when senescence persists in aged or dystrophic muscle. This review synthesizes the complex and contradictory roles of cellular senescence in skeletal muscle regeneration, underscores the distinction between transient pro-regenerative and persistent deleterious senescence, highlights the importance of cell-type-specific contributions, and emphasizes the need for precise characterization of senescent cell dynamics and fate. Resolving these discrepancies will be critical for developing targeted senotherapeutic strategies to enhance muscle regeneration in aging and degenerative diseases. - Source: PubMed
Publication date: 2026/05/07
Liu XingyuanWang Huating - Skeletal muscle regeneration relies on the resident stem cell population, termed satellite cells. Mechanistically, understanding the quiescence and activation dynamics of muscle satellite cells are essential for regenerative therapies and emerging applications such as cellular agriculture. Quiescent satellite cells (QSCs) are typically identified by expression of PAX7 and functional characteristics including a lack of proliferation. However, with the rapidly growing body of transcriptomic data, there is a lack of consensus regarding what markers can be used to identify quiescent satellite cells across transcriptomic studies. The purpose of this review was to evaluate the transcripts currently used to identify QSCs using transcriptomics and to establish an evidence-based foundation that could be used for future analyses. After surveying published single-cell transcriptomic studies, we identified and/or as the most used markers of general satellite cell identity, while , , and , together with the absence of , , and were most commonly used to identify QSC clusters in murine studies. In contrast, there is currently insufficient literature to make a confident conclusion on quiescence markers in larger mammals, including humans, pigs, and cattle. We also highlight the conceptual and technical challenges associated with transcriptomic analysis of satellite cell subpopulations, including continuum-based cell states, isolation induced transcriptional changes, and inconsistent terminology. As a field, greater consistency in language, standardized analyses, and cross-species validation will be required to progress the study of satellite cell quiescence and its translational utility. - Source: PubMed
Publication date: 2026/05/06
Syroid Anika LSteele Alexandra PMurach Kevin AHawke Thomas J - Skeletal muscle injury is prevalent in clinical practice and sports medicine, and efficient regeneration is crucial for restoring motor function. Niacin (vitamin B3, NIA), a water-soluble essential nutrient and key precursor of nicotinamide adenine dinucleotide (NAD + ), regulates muscle metabolism and mitochondrial function, but its role and underlying mechanisms in skeletal muscle injury repair remain unclear. In this study, a mouse model of acute skeletal muscle injury was established via intramuscular injection of bupivacaine hydrochloride, and C2C12 myoblasts were used as an in vitro model to explore NIA's effects on muscle regeneration and myogenic differentiation. In vivo experiments showed that oral NIA supplementation (73 m g/kg/day for 8 weeks) significantly promoted repair of the injured tibialis anterior (TA) muscle: compared with the NC group, NIA-treated mice had increased TA muscle mass, larger myofiber cross-sectional area, a higher proportion of centrally nucleated fibers, and improved muscle function. Western blot analysis revealed that NIA upregulated the expression of myogenic regulatory factors (MRFs) including Pax7, MyoD, and MyoG in injured tissues. In vitro assays demonstrated that NIA promoted C2C12 myoblast differentiation dose-dependently, with 1 mM as the optimal concentration, confirmed by increased MyoD and MyoG expression and a higher myotube fusion index. Bioinformatics analyses predicted the PI3K/Akt signaling pathway as a potential downstream target. Mechanistically, NIA increased Akt phosphorylation (p-Akt) in C2C12 cells, while PI3K inhibition by LY294002 eliminated NIA-induced p-Akt upregulation, MRFs expression, and myotube fusion. In conclusion, NIA accelerates skeletal muscle regeneration and enhances C2C12 myoblast differentiation by activating the PI3K/Akt signaling pathway. This study clarifies NIA's molecular mechanism in muscle regeneration and provides a theoretical basis for its clinical application in treating skeletal muscle injury. - Source: PubMed
Publication date: 2026/05/02
Dai LizhiWang JingxuanCao ZheyuanYu TongLiu JiaLi YouchongZhang YuhaoXiao Jianhua - The progressive skeletal muscle degeneration observed in Duchenne Muscular Dystrophy (DMD) patients requires multiple cycles of satellite cells (SCs) activation to promote tissue regeneration. Dystrophic SCs present intrinsic defects, and the disrupting fibrotic niche hinders appropriate muscle recovery. Traditional 2D culture systems face challenges in modeling the DMD muscle niche and SCs behavior. Our aim was to validate a 3D culture of skeletal muscle spheroids (iSMS) for DMD modeling, as compared to the traditional 2D culture, while investigating the pathophysiological mechanisms of dystrophin deficiency in vitro. - Source: PubMed
Publication date: 2026/05/02
Esposito Joycede Souza Leite FelipeBarbosa Igor Nevesda Mata Martins Thaís Mariade Oliveira Olberg Giovanna GonçalvesAl Tanoury ZiadTelles-Silva Kayque Alvesda Silva Pardo Mayana CristinaJazedje TatianaBortolin Raul HernandesHirata Mario HiroyukiPourquié OlivierZatz Mayana