Journal
CELLS
Volume 11, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/cells11192953
Keywords
macrophages; inflammation; wound healing
Categories
Funding
- School of Pharmacy and Medical Sciences Scholarship, University of South Australia
- NHMRC Senior Research Fellowship [1102617]
- Channel 7 Children's Research Foundation
- University President's Scholarship
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This review discusses the role and mechanisms of macrophages in skin wound healing, including cellular and molecular aspects such as subtypes, metabolism, plasticity, and epigenetics. The interactions between macrophages and factors important for wound healing are also highlighted.
Macrophages are key immune cells that respond to infections, and modulate pathophysiological conditions such as wound healing. By possessing phagocytic activities and through the secretion of cytokines and growth factors, macrophages are pivotal orchestrators of inflammation, fibrosis, and wound repair. Macrophages orchestrate the process of wound healing through the transitioning from predominantly pro-inflammatory (M1-like phenotypes), which present early post-injury, to anti-inflammatory (M2-like phenotypes), which appear later to modulate skin repair and wound closure. In this review, different cellular and molecular aspects of macrophage-mediated skin wound healing are discussed, alongside important aspects such as macrophage subtypes, metabolism, plasticity, and epigenetics. We also highlight previous studies demonstrating interactions between macrophages and these factors for optimal wound healing. Understanding and harnessing the activity and capability of macrophages may help to advance new approaches for improving healing of the skin.
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