[HTML][HTML] Metabolic reprogramming and reliance in human skin wound healing

M Manchanda, M Torres, F Inuossa, R Bansal… - Journal of Investigative …, 2023 - Elsevier
M Manchanda, M Torres, F Inuossa, R Bansal, R Kumar, M Hunt, CE Wheelock
Journal of Investigative Dermatology, 2023Elsevier
Impaired skin wound healing is a significant global health issue, especially among the
elderly. Wound healing is a well-orchestrated process involving the sequential phases of
inflammation, proliferation, and tissue remodeling. Although wound healing is a highly
dynamic and energy-requiring process, the role of metabolism remains largely unexplored.
By combining transcriptomics and metabolomics of human skin biopsy samples, we mapped
the core bioenergetic and metabolic changes in normal acute as well as chronic wounds in …
Impaired skin wound healing is a significant global health issue, especially among the elderly. Wound healing is a well-orchestrated process involving the sequential phases of inflammation, proliferation, and tissue remodeling. Although wound healing is a highly dynamic and energy-requiring process, the role of metabolism remains largely unexplored. By combining transcriptomics and metabolomics of human skin biopsy samples, we mapped the core bioenergetic and metabolic changes in normal acute as well as chronic wounds in elderly subjects. We found upregulation of glycolysis, the tricarboxylic acid cycle, glutaminolysis, and β-oxidation in the later stages of acute wound healing and in chronic wounds. To ascertain the role of these metabolic pathways on wound healing, we targeted each pathway in a wound healing assay as well as in a human skin explant model using metabolic inhibitors and stimulants. Enhancement or inhibition of glycolysis and, to a lesser extent, glutaminolysis had a far greater impact on wound healing than similar manipulations of oxidative phosphorylation and fatty acid β-oxidation. These findings increase the understanding of wound metabolism and identify glycolysis and glutaminolysis as potential targets for therapeutic intervention.
Elsevier