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Manchanda M, Torres M, Inuossa F, Bansal R, Kumar R, Hunt M, Wheelock CE, Bachar-Wikstrom E, Wikstrom JD. Metabolic Reprogramming and Reliance in Human Skin Wound Healing. J Invest Dermatol 2023; 143:2039-2051.e10. [PMID: 37061123 DOI: 10.1016/j.jid.2023.02.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 01/18/2023] [Accepted: 02/01/2023] [Indexed: 04/17/2023]
Abstract
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.
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Affiliation(s)
- Mansi Manchanda
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Monica Torres
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Farydah Inuossa
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Ritu Bansal
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Rahul Kumar
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, India
| | - Matthew Hunt
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Craig E Wheelock
- Research Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden; Department of Respiratory Medicine and Allergy, Karolinska University Hospital, Stockholm, Sweden; Gunma University Initiative for Advanced Research (GIAR), Gunma University, Maebashi, Japan
| | - Etty Bachar-Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Jakob D Wikstrom
- Dermatology and Venereology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden; Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden.
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Hunt M, Torres M, Bachar-Wikström E, Wikström JD. Multifaceted roles of mitochondria in wound healing and chronic wound pathogenesis. Front Cell Dev Biol 2023; 11:1252318. [PMID: 37771375 PMCID: PMC10523588 DOI: 10.3389/fcell.2023.1252318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/28/2023] [Indexed: 09/30/2023] Open
Abstract
Mitochondria are intracellular organelles that play a critical role in numerous cellular processes including the regulation of metabolism, cellular stress response, and cell fate. Mitochondria themselves are subject to well-orchestrated regulation in order to maintain organelle and cellular homeostasis. Wound healing is a multifactorial process that involves the stringent regulation of several cell types and cellular processes. In the event of dysregulated wound healing, hard-to-heal chronic wounds form and can place a significant burden on healthcare systems. Importantly, treatment options remain limited owing to the multifactorial nature of chronic wound pathogenesis. One area that has received more attention in recent years is the role of mitochondria in wound healing. With regards to this, current literature has demonstrated an important role for mitochondria in several areas of wound healing and chronic wound pathogenesis including metabolism, apoptosis, and redox signalling. Additionally, the influence of mitochondrial dynamics and mitophagy has also been investigated. However, few studies have utilised patient tissue when studying mitochondria in wound healing, instead using various animal models. In this review we dissect the current knowledge of the role of mitochondria in wound healing and discuss how future research can potentially aid in the progression of wound healing research.
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Affiliation(s)
- Matthew Hunt
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Monica Torres
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Etty Bachar-Wikström
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Jakob D. Wikström
- Dermatology and Venerology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
- Dermato-Venereology Clinic, Karolinska University Hospital, Stockholm, Sweden
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Ponrasu T, Jamuna S, Mathew A, Madhukumar KN, Ganeshkumar M, Iyappan K, Suguna L. Efficacy of L-proline administration on the early responses during cutaneous wound healing in rats. Amino Acids 2013; 45:179-89. [PMID: 23508578 DOI: 10.1007/s00726-013-1486-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 03/05/2013] [Indexed: 12/28/2022]
Abstract
Proline (Pro) plays a versatile role in cell metabolism and physiology. Pro and hydroxypro are major imino acids present in collagen, an important connective tissue protein, essential for wound healing, which is a primary response to tissue injury. This study explains the role of L-pro on cutaneous wound healing in rats when administered both topically and orally. Open excision wounds were made on the back of rats, and 200 μl (200 mg) of pro was administered topically and orally once daily to the experimental rats until the wounds healed completely. The control wounds were left untreated. Granulation tissues formed were removed after day 4 and 8 of post excision wounding, and biochemical parameters such as total protein, collagen, hexosamine, and uronic acid were estimated. Levels of enzymatic and non-enzymatic antioxidants such as catalase, superoxide dismutase, glutathione peroxidase, ascorbic acid, and reduced glutathione were evaluated along with lipid peroxides in the granulation tissues. Tensile strength and period of epithelialization were also measured. It was observed that the treated wounds healed very fast as evidenced by augmented rates of epithelialization and wound contraction, which was also confirmed by histological examinations. The results strappingly authenticate the beneficial effects of the topical administration of L-proline in the acceleration of wound healing than the oral administration and control.
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Affiliation(s)
- Thangavel Ponrasu
- Department of Biochemistry, Central Leather Research Institute (Council of Scientific and Industrial Research), Adyar, Chennai 600 020, India
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A Study of the Wound Healing Mechanism of a Traditional Chinese Medicine, Angelica sinensis, Using a Proteomic Approach. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:467531. [PMID: 22536285 PMCID: PMC3319019 DOI: 10.1155/2012/467531] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 01/19/2012] [Indexed: 11/18/2022]
Abstract
Angelica sinensis (AS) is a traditional Chinese herbal medicine that has been formulated clinically to treat various form of skin trauma and to help wound healing. However, the mechanism by which it works remains a mystery. In this study we have established a new platform to evaluate the pharmacological effects of total AS herbal extracts as well as its major active component, ferulic acid (FA), using proteomic and biochemical analysis. Cytotoxic and proliferation-promoting concentrations of AS ethanol extracts (AS extract) and FA were tested, and then the cell extracts were subject to 2D PAGE analysis. We found 51 differentially expressed protein spots, and these were identified by mass spectrometry. Furthermore, biomolecular assays, involving collagen secretion, migration, and ROS measurements, gave results that are consistent with the proteomic analysis. In this work, we have demonstrated a whole range of pharmacological effects associated with Angelica sinensis that might be beneficial when developing a wound healing pharmaceutical formulation for the herbal medicine.
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Du Toit DF, Page BJ. An in vitro evaluation of the cell toxicity of honey and silver dressings. J Wound Care 2009; 18:383-9. [PMID: 19789475 DOI: 10.12968/jowc.2009.18.9.44307] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To establish whether honey and silver-impregnated dressings used by wound-healing practitioners are cytotoxic in vitro to human skin keratinocytes and dermal fibroblasts. METHOD Human keratinocyte and fibroblast tissue cultures were established in vitro. Untreated cultures served as controls (group I). Small dressing implants of monofloral, medicinal honey (L-Mesitran) (group 2) and nanocrystalline silver (Acticoat) (group 3) were placed in test wells and co-cultured with each of the two cell lines. Morphological changes, including cell toxicity, were assessed using inverted microscopy, trypan blue staining and the Rosdy and Clauss cell toxicity scoring system. RESULTS Untreated cultures consisting of both keratinocytes and fibroblasts (group 1) were established in 90% of all cases. In group 2, cultures with honey-impregnated implants, cell proliferation remained present at two and four months. Cell viability remained intact and cell toxicity was not evident at four months after continuous tissue culture. In group 3, marked toxicity was observed with high non-viability staining and cell-scoring counts compared with groups 1 and 2 (p<0.05). This demonstrates that the silver interfered with epidermal cell proliferation and migration, implying that it contains cytotoxic material. CONCLUSION The honey-based product showed excellent cytocompatibility with tissue cell cultures compared with the silver dressing, which demonstrated consistent culture and cell toxicity. Further studies are needed to assess if these comparative in-vitro findings should influence a clinician's choice of wound dressing.
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Affiliation(s)
- D F Du Toit
- Division of Anatomy and Histology, Academic Department of Biomedical Sciences, Faculty of Health Sciences, University of Stellenbosch, Tygerberg Campus, Parow, South Africa.
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