Abstract
The therapeutic potential of purinergic signaling has been explored for a wide variety of diseases, including those related to the skin. In this study, we used the self-assembled skin substitutes (SASS), a highly functional reconstructed human skin model, which shares many properties with normal human skin, to study the impact of purinergic receptors agonists, such as ATP, UTP and a P2Y receptor antagonist, Reactive Blue 2 during wound healing. After treating the wounded skins, we evaluated the wound area, reepithelialization, length of migrating tongues toward the wound, quality of the skins through the cytokeratin 10 and laminin-5 expression, epidermal and dermal cell proliferation. In addition, the expression of the main ectoenzymes capable of hydrolyzing nucleotides were investigated through the wounded SASS regions: unwounded region, wound margin, intermediate region and migrating epidermal tongue. After 3 days, under the UTP treatment, the wounded SASS showed an increase in the reepithelialization and in the proliferation of keratinocytes and fibroblasts, without altering the quality of the skin. We also identified the presence of the ectoenzymes NTPDase1 and NPP1 in the reconstructed human skin model, suggesting their involvement in wound healing. Considering the need for new therapies capable of promoting healing in complex wounds, although these results are still preliminary, they suggest the involvement of extracellular nucleotides in human skin healing and the importance to understand their role in this mechanism. New experiments it will be necessary to determine the mechanisms by which the purinergic signaling is involved in the skin wound healing.
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Acknowledgements
We would like to thank the members of the Research Center CHU de Québec-Université Laval for the support, specially to Julie Pelletier, Israël Martel, Guillaume Martin, Emilie Attiogbe, Lucíola Barcelos, Angela Piaceski, Syrine Arif and Sébastien Larochelle.
Funding
MRW is recipient of research productivity fellowship (PQ1D) from Conselho Nacional de Desenvolvimento Científico e Tecnológico – Brasil (CNPq); LISN is recipient of fellowship from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001. This study was supported by Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul—Brasil (FAPERGS/CAPES 06/2018-Programa de Internacionalização da pós-graduação no RS (19/2551-0000679-9) to MW and VM; JS, by a grant from the Natural Sciences and Engineering Research Council of Canada (NSERC; RGPIN-2016-05867 (JS) and RGPIN-2019-06500 (VM)) and Quebec Cell, Tissue and Gene Therapy Network (ThéCell) (VM).
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Naasani, L.I.S., Sévigny, J., Moulin, V.J. et al. UTP increases wound healing in the self assembled skin substitute (SASS). J. Cell Commun. Signal. 17, 827–844 (2023). https://doi.org/10.1007/s12079-023-00725-2
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DOI: https://doi.org/10.1007/s12079-023-00725-2