Objective: To explore the research progress of the cell sources and related signaling pathways of the wound-induced hair follicle neogenesis (WIHN) in recent years.
Methods: The literature related to WIHN in recent years was reviewed, and the cell sources and molecular mechanism were summarized and discussed.
Results: Current research shows that WIHN is a rare regeneration phenomenon in the skin of adult mammals, with multiple cell origins, both hair follicle stem cells and epithelial stem cells around the wound. Its molecular mechanism is complicated, which is regulated by many signaling pathways. Besides, the process is closely related to the immune response, the immunocytes and their related cytokines provide suitable conditions for this process.
Conclusion: There are still many unsolved problems on the cellular origins and molecular mechanisms of the WIHN. Further study on the mechanisms will enhance the understanding of adult mammals' hair follicle regeneration and may provide new strategy for functional healing of the human skin.
目的: 综述近年来创伤性毛囊新生（wound-induced hair follicle neogenesis，WIHN）细胞来源及相关信号通路的研究进展。.
方法: 广泛查阅近年与 WIHN 相关的文献，从细胞来源、分子机制等方面进行总结讨论。.
结果: WIHN 是一种罕见的成年哺乳动物毛囊再生现象，新生毛囊细胞来源丰富，既有创面周围来源的毛囊干细胞，也有上皮来源的干细胞。WIHN 分子机制复杂，是一种多种信号通路调控的再生过程，与免疫系统密切相关，免疫细胞及其产生的各种免疫因子为这一过程提供了适宜的条件。.
结论: WIHN 的细胞来源及分子机制等方面仍有许多未解决的问题，加强机制研究将加深对成年哺乳动物毛囊再生的了解，为皮肤功能性愈合提供新思路。.
Keywords: Wound-induced hair follicle neogenesis; embryogenic regeneration; functional regeneration; skin healing.