Volume 2017, Issue 1 6408278
Research Article
Open Access

Mitochondria-Targeted Antioxidant SkQ1 Improves Dermal Wound Healing in Genetically Diabetic Mice

Ilya A. Demyanenko

Ilya A. Demyanenko

Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234, Russia msu.ru

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Vlada V. Zakharova

Vlada V. Zakharova

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

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Olga P. Ilyinskaya

Olga P. Ilyinskaya

Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234, Russia msu.ru

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Tamara V. Vasilieva

Tamara V. Vasilieva

Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234, Russia msu.ru

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Artem V. Fedorov

Artem V. Fedorov

Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234, Russia msu.ru

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Vasily N. Manskikh

Vasily N. Manskikh

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

Institute of Mitoengineering, Lomonosov Moscow State University, Leninskie Gory 1-73, Moscow 119992, Russia msu.ru

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Roman A. Zinovkin

Roman A. Zinovkin

Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234, Russia msu.ru

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

Institute of Mitoengineering, Lomonosov Moscow State University, Leninskie Gory 1-73, Moscow 119992, Russia msu.ru

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Olga Yu Pletjushkina

Olga Yu Pletjushkina

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

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Boris V. Chernyak

Boris V. Chernyak

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

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Vladimir P. Skulachev

Vladimir P. Skulachev

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

Institute of Mitoengineering, Lomonosov Moscow State University, Leninskie Gory 1-73, Moscow 119992, Russia msu.ru

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Ekaterina N. Popova

Corresponding Author

Ekaterina N. Popova

Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1-40, Moscow 119992, Russia msu.ru

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First published: 06 July 2017
Citations: 53
Academic Editor: Maik Hüttemann

Abstract

Oxidative stress is widely recognized as an important factor in the delayed wound healing in diabetes. However, the role of mitochondrial reactive oxygen species in this process is unknown. It was assumed that mitochondrial reactive oxygen species are involved in many wound-healing processes in both diabetic humans and animals. We have applied the mitochondria-targeted antioxidant 10-(6′-plastoquinonyl)decyltriphenylphosphonium (SkQ1) to explore the role of mitochondrial reactive oxygen species in the wound healing of genetically diabetic mice. Healing of full-thickness excisional dermal wounds in diabetic C57BL/KsJ-db/db mice was significantly enhanced after long-term (12 weeks) administration of SkQ1. SkQ1 accelerated wound closure and stimulated epithelization, granulation tissue formation, and vascularization. On the 7th day after wounding, SkQ1 treatment increased the number of α-smooth muscle actin-positive cells (myofibroblasts), reduced the number of neutrophils, and increased macrophage infiltration. SkQ1 lowered lipid peroxidation level but did not change the level of the circulatory IL-6 and TNF. SkQ1 pretreatment also stimulated cell migration in a scratch-wound assay in vitro under hyperglycemic condition. Thus, a mitochondria-targeted antioxidant normalized both inflammatory and regenerative phases of wound healing in diabetic mice. Our results pointed to nearly all the major steps of wound healing as the target of excessive mitochondrial reactive oxygen species production in type II diabetes.

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