Pharmacological mobilization of endogenous stem cells significantly promotes skin regeneration after full-thickness excision: The synergistic activity of AMD3100 and tacrolimus

Qing Lin, Russell N. Wesson, Hiromichi Maeda, Yongchun Wang, Zhu Cui, Jun O. Liu, Andrew M. Cameron, Bin Gao, Robert A. Montgomery, George M. Williams, Zhaoli Sun

Research output: Contribution to journalArticle

Abstract

Stem cell therapy has shown promise in treating a variety of pathologies including skin wounds, but practical applications remain elusive. Here, we demonstrate that endogenous stem cell mobilization produced by AMD3100 and low-dose tacrolimus is able to reduce by 25% the time of complete healing of full-thickness wounds created by surgical excision. Equally important, healing was accompanied by reduced scar formation and regeneration of hair follicles. Searching for mechanisms, we found that AMD3100 combined with low-dose tacrolimus mobilized increased number of lineage-negative c-Kit+, CD34+, and CD133+ stem cells. Low-dose tacrolimus also increased the number of SDF-1-bearing macrophages in the wound sites amplifying the "pull" of mobilized stem cells into the wound. Lineage tracing demonstrated the critical role of CD133 stem cells in enhanced capillary and hair follicle neogenesis, contributing to more rapid and perfect healing. Our findings offer a significant therapeutic approach to wound healing and tissue regeneration.

Original languageEnglish (US)
Pages (from-to)2458-2468
Number of pages11
JournalJournal of Investigative Dermatology
Volume134
Issue number9
DOIs
StatePublished - Sep 2014

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Dermatology
  • Cell Biology

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