title: Defining stem cell dynamics and migration during wound healing in mouse skin epidermis.
abstract: Wound healing is essential to repair the skin after injury. In the epidermis, distinct stem cells (SCs) populations contribute to wound healing. However, how SCs balance proliferation, differentiation and migration to repair a wound remains poorly understood. Here, we show the cellular and molecular mechanisms that regulate wound healing in mouse tail epidermis. Using a combination of proliferation kinetics experiments and molecular profiling, we identify the gene signatures associated with proliferation, differentiation and migration in different regions surrounding the wound. Functional experiments show that SC proliferation, migration and differentiation can be uncoupled during wound healing. Lineage tracing and quantitative clonal analysis reveal that, following wounding, progenitors divide more rapidly, but conserve their homoeostatic mode of division, leading to their rapid depletion, whereas SCs become active, giving rise to new progenitors that expand and repair the wound. These results have important implications for tissue regeneration, acute and chronic wound disorders.
authors.affiliation: Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium.
authors.forename: Mariaceleste
authors.initials: M
authors.lastname: Aragona
authors.affiliation: Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium.
authors.forename: Sophie
authors.initials: S
authors.lastname: Dekoninck
authors.affiliation: Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK.
authors.forename: Steffen
authors.initials: S
authors.lastname: Rulands
authors.affiliation: Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium.
authors.forename: Sandrine
authors.initials: S
authors.lastname: Lenglez
authors.affiliation: Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium.
authors.forename: Guilhem
authors.initials: G
authors.lastname: Mascré
authors.affiliation: Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK.|The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK.|Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, UK.
authors.forename: Benjamin D
authors.initials: BD
authors.lastname: Simons
authors.affiliation: Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium.|WELBIO, Université Libre de Bruxelles, Brussels B-1070, Belgium.
authors.forename: Cédric
authors.initials: C
authors.lastname: Blanpain
mesh_terms: D000818:Animals; D002465:Cell Movement; D016764:Cell Polarity; D049109:Cell Proliferation; D048430:Cell Shape; D002999:Clone Cells; D004817:Epidermis / Q000473:pathology*; D018859:Hair Follicle / Q000473:pathology; D051379:Mice; D008954:Models, Biological; D013234:Stem Cells / Q000166:cytology* / Q000378:metabolism; D014945:Wound Healing