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Satellite cell activation and functional regeneration of necrotic, but not atrophic skeletal muscle using an injectable matrix

机译:使用可注射基质激活坏死性而非萎缩性骨骼肌的卫星细胞活化和功能性再生

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Overall, exposure to a collagen matrix, which physically resembles the skeletal muscle's extracellular matrix, induces rapid growth, maturation and function of SC-derived myotubes. In the presence of necrotic myocytes, the collagen matrix's ability to augment mature myotube formation is greatly increased. In vivo, application of the collagen matrix reduced the loss of necrotic muscle function, but no functional change was observed in the atrophic model. This was echoed by transcription profiles which showed that regeneration was evident only in the necrotic mdx muscle. Together, these results suggest that application of a collagen-based matrix has the potential to augment skeletal muscle regeneration and that its regenerative abilities may be more successful for treating necrotic, but not atrophic muscle.
机译:总体而言,暴露于与骨骼肌的细胞外基质物理相似的胶原蛋白基质可诱导SC衍生的肌管快速生长,成熟并发挥其功能。在坏死性心肌细胞的存在下,胶原蛋白基质增强成熟肌管形成的能力大大提高。在体内,胶原蛋白基质的应用减少了坏死肌功能的丧失,但在萎缩模型中未观察到功能改变。转录图谱表明,再生仅在坏死的mdx肌肉中可见。总之,这些结果表明,基于胶原的基质的应用具有增强骨骼肌再生的潜力,并且其再生能力在治疗坏死性肌肉而非萎缩性肌肉方面可能更为成功。

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