Li Wenya, Xu Zilu, Zou Binghan, Yang Dongcheng, Lu Yue, Zhang Xiaohan, Zhang Chen, Li Yanzhao, Zhu Chuhong
Department of Anatomy, Engineering Research Center for Organ Intelligent Biological Manufacturing of Chongqing, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Third Military Medical University, Chongqing 400038, China.
Laboratory of Basic Medicine, The General Hospital of Western Theater Command, Chengdu 610000, China.
Fundam Res. 2024 Feb 8;5(2):697-714. doi: 10.1016/j.fmre.2023.12.015. eCollection 2025 Mar.
Tissue engineering and regenerative medicine are effective strategies for the treatment of damaged tissues and end-stage organ failure. Damaged tissue regeneration and organ transplantation require blood vessel reconstruction to facilitate tissue remodeling, the bottleneck for application research in this field. Immune cells are heavily involved in coordinating neovascularization, in which macrophage aggregation is a key factor in angiogenesis and arteriogenesis. Previous studies have promoted tissue vascularization by regulating macrophages; however, the mechanisms underlying macrophage-mediated vascularization remain nebulous. Studies on material-based regulation have primarily been observational and lack systematic and targeted research. Macrophages from different sources exhibit different phenotypes or functions in tissues, such as peripheral blood monocytes and tissue-resident macrophages, with each exhibiting complicated mechanisms for promoting tissue injury and graft remodeling. Therefore, in this review, we discuss the role of different tissue-resident macrophages and circulating monocytes in vascularization during injured tissue regeneration and graft remodeling and summarize the current strategies for the use of biomaterials to regulate macrophages and promote the vascularization of injured tissues and during organ transplantation. A better understanding of these mechanisms will facilitate future tissue engineering research that promotes vascularization by regulating macrophage reactions.
组织工程和再生医学是治疗受损组织和终末期器官衰竭的有效策略。受损组织再生和器官移植需要血管重建以促进组织重塑,这是该领域应用研究的瓶颈。免疫细胞大量参与协调新血管形成,其中巨噬细胞聚集是血管生成和动脉生成的关键因素。先前的研究通过调节巨噬细胞来促进组织血管化;然而,巨噬细胞介导的血管化的潜在机制仍然模糊不清。基于材料的调节研究主要是观察性的,缺乏系统的和有针对性的研究。来自不同来源的巨噬细胞在组织中表现出不同的表型或功能,如外周血单核细胞和组织驻留巨噬细胞,它们各自在促进组织损伤和移植物重塑方面表现出复杂的机制。因此,在本综述中,我们讨论了不同组织驻留巨噬细胞和循环单核细胞在受损组织再生和移植物重塑过程中的血管化作用,并总结了目前使用生物材料调节巨噬细胞以及促进受损组织血管化和器官移植过程中血管化的策略。更好地理解这些机制将有助于未来通过调节巨噬细胞反应来促进血管化的组织工程研究。
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