Jeon Eun Je, An Soohwan, Han Seung Yeop, Jeong Eunseon, Song Young Seok, Lee Jung Seung, Cho Seung-Woo
Department of Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea.
Cellartgen Inc., Seoul, 03722, Republic of Korea.
Adv Healthc Mater. 2025 May;14(14):e2403747. doi: 10.1002/adhm.202403747. Epub 2025 Apr 24.
The treatment of volumetric muscle loss (VML) is challenging owing to the deficiency of appropriate bioscaffolds and ineffective therapeutic outcomes with conventional approaches. Adhesive hydrogels have emerged as potential tools for promoting tissue regeneration, offering effective integration with damaged tissues. However, technical procedures requiring non-biocompatible crosslinking methods, mechanical mismatches, or the absence of tissue-specific microenvironments in conventional adhesive hydrogels have hindered their successful application in tissue reconstruction. In this study, a patch-type adhesive hydrogel is developed by combining a muscle tissue-derived extracellular matrix (MEM) and catechol-conjugated hyaluronic acid (HA-CA). This MEM-containing HA-CA (HCM) patch hydrogel utilizes MEM as both a biocompatible crosslinker and a therapeutic substance. The HCM patch hydrogel, crosslinked through a combination of covalent and non-covalent interactions via MEM and catechol in the composite, not only provides stable physical support but also develops muscle tissue-specific biochemical cues, mediating the recruitment and maturation of muscular cells. In animal models of VML, the HCM patch hydrogel effectively stimulates satellite cells and supports de novo muscle regeneration with functional restoration. This study emphasizes the efficacy and ready-to-use convenience of HCM patch hydrogels for muscle regeneration.
由于缺乏合适的生物支架以及传统方法治疗效果不佳,大面积肌肉缺损(VML)的治疗颇具挑战性。粘性水凝胶已成为促进组织再生的潜在工具,能与受损组织有效整合。然而,传统粘性水凝胶需要非生物相容性交联方法、存在机械不匹配问题或缺乏组织特异性微环境等技术问题,阻碍了它们在组织重建中的成功应用。在本研究中,通过将肌肉组织衍生的细胞外基质(MEM)与儿茶酚共轭透明质酸(HA-CA)相结合,开发出一种贴片式粘性水凝胶。这种含MEM的HA-CA(HCM)贴片水凝胶将MEM用作生物相容性交联剂和治疗物质。HCM贴片水凝胶通过复合材料中的MEM和儿茶酚经共价和非共价相互作用交联而成,不仅提供稳定的物理支撑,还能产生肌肉组织特异性生化信号,介导肌肉细胞的募集和成熟。在VML动物模型中,HCM贴片水凝胶能有效刺激卫星细胞,并支持具有功能恢复的新生肌肉再生。本研究强调了HCM贴片水凝胶在肌肉再生方面的有效性和使用便利性。
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