Molecular Signaling Pathways in Wound-Induced Hair-Follicle Neogenesis

Wound-induced hair-follicle neogenesis (WIHN) is the phenomenon of regenerating new hair follicles from wounds in mammals. The WIHN involves both developmental and adult wound-healing processes. Moreover, the WIHN is regulated by a variety of factors, particularly multiple molecular signaling pathways produced in several types of cells. Here, the role of multiple signaling in different types of cells in WIHN is comprehensively described. Furthermore, the lack of dermal γδ T cells in the human scalp has hindered the clinical application of WIHN, but the development of drugs such as Wnt signaling activators is increasing the effectiveness of WIHN in humans. Overall, understanding the underlying mechanisms that regulate WIHN may help treat skin diseases, including alopecia.