Electric fields guide migration of epidermal stem cells and promote skin wound healing

Li Li, Wei Gu, Juan Du, Brian Reid, Xianjian Deng, Zhidai Liu, Zhaowen Zong, Haiyan Wang, Bo Yao, Ce Yang, Jun Yan, Ling Zeng, Laura Chalmers, Min Zhao, Jianxin Jiang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Migration of epidermal stem cells (EpSCs) into wounds may play an important role in wound healing. Endogenous electric fields (EFs) arise naturally at wounds. Consistent with previous reports, we measured outward electric currents at rat skin wounds using vibrating probes. Topical use of prostaglandin E2 significantly promoted wound healing. However, it is not known whether EpSCs respond to EFs. We first isolated and characterized EpSCs from rat skin. We then demonstrated that EpSCs isolated from the epidermis migrated directionally toward the cathode in EFs of 50-400 mV/mm. The directedness values increased in a dose- and time-dependent fashion. The migration speed of EpSCs was significantly increased in EFs. EFs induced asymmetric polymerization of intracellular F-actin and activation of the extracellular signal-regulated kinase 1/2 and phosphatidylinositol-3-kinase (PI3K)/protein kinase B pathways. Inhibition of epidermal growth factor receptor, extracellular signal-regulated kinase 1/2, or PI3K significantly inhibited the cathodal distribution of F-actin and the electrotactic response of EpSCs. These data for the first time show that EpSCs possess obvious electrotaxis, in which the epidermal growth factor receptor-mitogen activated protein kinase-PI3K pathways are involved. These data thus suggest a novel aspect of electric signaling in wound healingâto stimulate and guide migration of EpSCs and to regulate wound healing.

Original languageEnglish (US)
Pages (from-to)840-851
Number of pages12
JournalWound Repair and Regeneration
Volume20
Issue number6
DOIs
StatePublished - Nov 2012

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Wound Healing
Stem Cells
Skin
Phosphatidylinositol 3-Kinase
Mitogen-Activated Protein Kinase 3
Mitogen-Activated Protein Kinase 1
Wounds and Injuries
Epidermal Growth Factor Receptor
Actins
Proto-Oncogene Proteins c-akt
Mitogen-Activated Protein Kinases
Dinoprostone
Epidermis
Polymerization
Electrodes

ASJC Scopus subject areas

  • Dermatology
  • Surgery

Cite this

Electric fields guide migration of epidermal stem cells and promote skin wound healing. / Li, Li; Gu, Wei; Du, Juan; Reid, Brian; Deng, Xianjian; Liu, Zhidai; Zong, Zhaowen; Wang, Haiyan; Yao, Bo; Yang, Ce; Yan, Jun; Zeng, Ling; Chalmers, Laura; Zhao, Min; Jiang, Jianxin.

In: Wound Repair and Regeneration, Vol. 20, No. 6, 11.2012, p. 840-851.

Research output: Contribution to journalArticle

Li, L, Gu, W, Du, J, Reid, B, Deng, X, Liu, Z, Zong, Z, Wang, H, Yao, B, Yang, C, Yan, J, Zeng, L, Chalmers, L, Zhao, M & Jiang, J 2012, 'Electric fields guide migration of epidermal stem cells and promote skin wound healing', Wound Repair and Regeneration, vol. 20, no. 6, pp. 840-851. https://doi.org/10.1111/j.1524-475X.2012.00829.x
Li, Li ; Gu, Wei ; Du, Juan ; Reid, Brian ; Deng, Xianjian ; Liu, Zhidai ; Zong, Zhaowen ; Wang, Haiyan ; Yao, Bo ; Yang, Ce ; Yan, Jun ; Zeng, Ling ; Chalmers, Laura ; Zhao, Min ; Jiang, Jianxin. / Electric fields guide migration of epidermal stem cells and promote skin wound healing. In: Wound Repair and Regeneration. 2012 ; Vol. 20, No. 6. pp. 840-851.
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