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天然细胞外基质:一种用于修复受损肌肉的新型支架平台。

Native extracellular matrix: a new scaffolding platform for repair of damaged muscle.

机构信息

UTAPRAD-DIM, ENEA Frascati Rome, Italy ; Fondazione San Raffaele Ceglie Messapica, Italy.

Fondazione San Raffaele Ceglie Messapica, Italy ; Department of Surgery, McGowan Institute, University of Pittsburgh Medical Center Pittsburgh, PA, USA.

出版信息

Front Physiol. 2014 Jun 16;5:218. doi: 10.3389/fphys.2014.00218. eCollection 2014.

Abstract

Effective clinical treatments for volumetric muscle loss resulting from traumatic injury or resection of a large amount of muscle mass are not available to date. Tissue engineering may represent an alternative treatment approach. Decellularization of tissues and whole organs is a recently introduced platform technology for creating scaffolding materials for tissue engineering and regenerative medicine. The muscle stem cell niche is composed of a three-dimensional architecture of fibrous proteins, proteoglycans, and glycosaminoglycans, synthesized by the resident cells that form an intricate extracellular matrix (ECM) network in equilibrium with the surrounding cells and growth factors. A consistent body of evidence indicates that ECM proteins regulate stem cell differentiation and renewal and are highly relevant to tissue engineering applications. The ECM also provides a supportive medium for blood or lymphatic vessels and for nerves. Thus, the ECM is the nature's ideal biological scaffold material. ECM-based bioscaffolds can be recellularized to create potentially functional constructs as a regenerative medicine strategy for organ replacement or tissue repopulation. This article reviews current strategies for the repair of damaged muscle using bioscaffolds obtained from animal ECM by decellularization of small intestinal submucosa (SIS), urinary bladder mucosa (UB), and skeletal muscle, and proposes some innovative approaches for the application of such strategies in the clinical setting.

摘要

目前,对于创伤性损伤或大量肌肉切除导致的容积性肌肉缺失,还没有有效的临床治疗方法。组织工程可能是一种替代治疗方法。组织和整个器官的去细胞化是一种新引入的平台技术,可用于创建组织工程和再生医学的支架材料。肌肉干细胞龛由纤维蛋白、蛋白聚糖和糖胺聚糖的三维结构组成,由驻留细胞合成,形成与周围细胞和生长因子平衡的复杂细胞外基质 (ECM) 网络。大量证据表明,ECM 蛋白调节干细胞的分化和更新,与组织工程应用密切相关。ECM 还为血管(包括血液和淋巴)和神经提供支持性介质。因此,ECM 是理想的天然生物支架材料。基于 ECM 的生物支架可以再细胞化,以创建具有潜在功能的构建体,作为器官替代或组织再填充的再生医学策略。本文综述了使用从小肠黏膜下层 (SIS)、尿路上皮 (UB) 和骨骼肌的去细胞化获得的动物 ECM 构建生物支架修复受损肌肉的当前策略,并提出了一些创新性方法,以将这些策略应用于临床。

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