The Potential of Macrophages for Skin Anti-aging.

Aging is an inevitable reality that every individual has to face. People look forward to intervene and slow down this process, for example, skin anti-aging cosmetic and therapeutic treatments are commercially available in a variety of methods, such as skin tightening and dermal fillers, but these approaches do not fundamentally change the aging state of senescent cells. Fortunately, macrophages possess the capability to promote tissue repair and regeneration, induce angiogenesis, and improve the tissue microenvironment, making their application in the field of skin anti-aging potentially possible. In this review article, we unveiled the features of aged skin, including a reduction in the extracellular matrix, a decrease in vascular density, diminished defense capabilities, and increased inflammation. We then summarized the possible anti-aging functions of macrophages in this field, such as anti-inflammation, immunoregulation, promotion of angiogenesis, and regeneration. We also suggested potential strategies for utilizing macrophages in anti-aging therapies, including recruiting macrophages to the skin, supplying induced macrophages, and regulating macrophage activity. In conclusion, macrophages may play a role in cell therapy for skin anti-aging, though their potential efficacy and mechanisms need to be further explored.