Mesenchymal Stem Cells From Mouse Hair Follicles Reduce Hypertrophic Scarring in a Murine Wound Healing Model

Author:

Li Hanluo,Ziemer Mirjana,Stojanovic Ivana,Saksida Tamara,Maksimovic-Ivanic Danijela,Mijatovic Sanja,Djmura Goran,Gajic Dragica,Koprivica Ivan,Krajnovic Tamara,Draca Dijana,Simon Jan-Christoph,Lethaus Bernd,Savkovic VukORCID

Abstract

AbstractWound healing of acute full-thickness injuries and chronic non-healing ulcers leads to delayed wound closure, prolonged recovery period and hypertrophic scarring, generating a demand for an autologous cell therapy and a relevant pre-clinical research models for wound healing. In this study, an immunocompetent model for wound healing was employed using a syngeneic murine cell line of mesenchymal stem cells cultured from the mouse whisker hair follicle outer root sheath (named moMSCORS). moMSCORS were isolated using an air-liquid interface method, expanded in vitro and characterized according to the MSC definition criteria - cell viability, in vitro proliferation, MSC phenotype and multi-lineage differentiations. Moreover, upon applying moMSCORS in an in vivo full-thickness wound model in the syngeneic C57BL/6 mice, the treated wounds displayed different morphology to that of the untreated wound beds. Quantitative evaluation of angiogenesis, granulation and wound closure involving clinical scoring and software-based quantification indicated a lower degree of inflammation in the treated wounds. Histological staining of treated wounds by the means of H&E, Alcian Blue, PicroSirius Red and αSMA immune labelling showed lower cellularity, less collagen filaments as well as thinner dermal and epidermal layers compared with the untreated wounds, indicating a general reduction of hypertrophic scars. The decreased inflammation, accelerated wound closure and non-hypertrophic scarring, which were facilitated by moMSCORS, hereby address a common problem of hypertrophic scars and non-physiological tissue properties upon wound closure, and additionally offer an in vivo model for the autologous cell-based wound healing. Graphic Abstract

Funder

Sächsisches Staatsministerium für Wissenschaft und Kunst

Deutsche Forschungsgemeinschaft

Erasmus+

Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja

Universität Leipzig

Publisher

Springer Science and Business Media LLC

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