Purinergic substances promote murine keratinocyte proliferation and enhance impaired wound healing in mice

Wound Repair and Regeneration : Official Publication of the Wound Healing Society [and] the European Tissue Repair Society
Michael BraunManfred Kietzmann

Abstract

As membrane-bound receptors for adenosine, purines, and pyrimidines, purinoceptors are expressed in nearly all cell types throughout the mammalian organism. Previous studies showed that purinoceptors are involved in the regulation of proliferation and differentiation of most target cells. The present study was performed to elucidate their role in keratinocyte proliferation and wound healing. The expression of the mRNA of several adenosine and P2Y receptors was shown in the immortalized murine keratinocyte cell line MSC-P5 and primary cultured keratinocytes of four different mouse strains. The nonselective adenosine receptor agonist 5'-(N-ethyl)-carboxamidoadenosine enhanced the growth of MSC-P5 cells in vitro via the A2B receptor. The proliferative stimulus of adenosine triphosphate and uridine triphosphate on this cell line was mediated by the P2Y2 receptor. The mitogenic effect of the purinergic substances was inhibited by simultaneous treatment with respective antagonists. Studies in a mouse model of dexamethasone-induced impaired wound healing showed the in vivo efficacy of the purinoceptor agonists. These studies confirm that pharmacological actions via purinoceptors offer an intriguing possibility in the treatment of impa...Continue Reading

References

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Citations

Apr 27, 2011·Purinergic Signalling·Edyta Gendaszewska-Darmach, Marta Kucharska
Feb 12, 2010·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Nathaniel A SowaMark J Zylka
Dec 14, 2011·The Journal of Investigative Dermatology·Geoffrey BurnstockAina V H Greig
Dec 2, 2008·Biochemical Pharmacology·María D VallsM Carmen Montesinos
May 4, 2012·Journal of Cellular Physiology·Emilie DegagnéFernand-Pierre Gendron
Aug 9, 2016·The Journal of Investigative Dermatology·Rosa M AndrésMaría Carmen Montesinos
Jan 17, 2019·Investigative Ophthalmology & Visual Science·Xiangzhe LiJong Suk Song
Apr 13, 2007·Physiological Reviews·Geoffrey Burnstock
Sep 8, 2009·The Journal of Immunology : Official Journal of the American Association of Immunologists·Emilie DegagnéFernand-Pierre Gendron
Jul 11, 2020·Scientific Reports·Ammar BoudakaMakoto Tominaga

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