Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China.
Ann Biomed Eng. 2021 Sep;49(9):1992-2005. doi: 10.1007/s10439-021-02832-w. Epub 2021 Jul 19.
Vascularization of tissue engineering constructs is an urgent need for delivering oxygen and nutrients and promoting tissue remodeling. As we all know, almost all implanted biomaterials elicit immune responses. Interestingly, the immunomodulatory biomaterials can utilize the inherent regenerative capability of endogenous cells and stem cells recruited by the activated immune cells to facilitate anagenesis and tissue remodeling. Macrophages, as almost ones of the first responses upon the implantation of biomaterials, play a vital role in guiding vascular formation and tissue remodeling. The polarization of macrophages can be influenced by the physical and chemical properties of biomaterials and thus they display diverse function states. Here, this review focus on the macrophage polarization in response to biomaterials and the interactions between them. It also summarizes the current strategies to promote vascularization of tissue engineering constructs through macrophage responses.
组织工程构建体的血管化对于输送氧气和营养物质以及促进组织重塑是迫切需要的。众所周知,几乎所有植入的生物材料都会引发免疫反应。有趣的是,免疫调节生物材料可以利用内源性细胞和被激活免疫细胞募集的干细胞的固有再生能力来促进再生和组织重塑。巨噬细胞作为生物材料植入后几乎最早的反应之一,在指导血管形成和组织重塑方面发挥着重要作用。巨噬细胞的极化可以受到生物材料的物理和化学性质的影响,因此它们表现出不同的功能状态。本文主要关注巨噬细胞对生物材料的反应及其相互作用,并总结了通过巨噬细胞反应促进组织工程构建体血管化的当前策略。