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Chen YY, Huang SM, Cheng YW, Hsu YL, Lan CCE. High-glucose impact on UVB responses in human epidermal keratinocytes: Insights on diabetic skin's resistance to photocarcinogenesis. Life Sci 2024; 357:123083. [PMID: 39343088 DOI: 10.1016/j.lfs.2024.123083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 09/18/2024] [Accepted: 09/24/2024] [Indexed: 10/01/2024]
Abstract
Ultraviolet (UV) B-induced damage in human epidermal keratinocytes (HEKs) initiates photocarcinogenesis. However, how diabetes influences photocarcinogenesis is not well understood. To investigate the impact of high-glucose environments on responses to UVB, we cultured HEKs in normal-glucose (NG) or high-glucose (HG) conditions (G6 and G26), followed by UVB irradiation at 25 mJ/cm2 (G6UVB and G26UVB). We performed next-generation sequencing and analyzed HEKs' expression profiles bioinformatically to identify candidate genes and cellular responses involved. We found UVB induced consistent responses in both NG- and HG-cultivated HEKs, but it also triggered certain distinct processes and pathways specifically in the HG groups. The 459 differentially expressed (DE) genes in the HG groups revealed their roles in chromatin remodeling, nucleosome assembly, and interferon signaling activation. Moreover, the 29 DE genes identified in G26UVB/G6UVB comparison, including the potent tumor suppressor gene TFPI2, were considered key genes contributing to HEKs' altered response to UVB in HG environments. UVB irradiation induced significantly higher TFPI2 expression in HG-cultivated HEKs than their NG-cultivated counterpart. Finally, HG-cultivation significantly increased oxidative stress, cyclobutane pyrimidine dimer formation, and apoptosis, while reducing HEKs' viability after UVB irradiation. These changes under HG conditions probably mediate cell fate toward death and tumor regression. Overall, our findings provide evidence and associated molecular basis on how HG conditions reduce keratinocytes' photocarcinogenic potential following UVB exposure.
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Affiliation(s)
- Yang-Yi Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shu-Mei Huang
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yu-Wen Cheng
- Department of Neurosurgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ya-Ling Hsu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Che E Lan
- Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Fang WC, Lan CCE. The Epidermal Keratinocyte as a Therapeutic Target for Management of Diabetic Wounds. Int J Mol Sci 2023; 24:4290. [PMID: 36901720 PMCID: PMC10002069 DOI: 10.3390/ijms24054290] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/13/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Diabetes mellitus (DM) is an important cause of chronic wounds and non-traumatic amputation. The prevalence and number of cases of diabetic mellitus are increasing worldwide. Keratinocytes, the outermost layer of the epidermis, play an important role in wound healing. A high glucose environment may disrupt the physiologic functions of keratinocytes, resulting in prolonged inflammation, impaired proliferation, and the migration of keratinocytes and impaired angiogenesis. This review provides an overview of keratinocyte dysfunctions in a high glucose environment. Effective and safe therapeutic approaches for promoting diabetic wound healing can be developed if molecular mechanisms responsible for keratinocyte dysfunction in high glucose environments are elucidated.
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Affiliation(s)
- Wei-Cheng Fang
- Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Cheng-Che E. Lan
- Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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Chen YY, Huang SM, Cheng YW, Yen MC, Hsu YL, Lan CCE. Investigation of the keratinocyte transcriptome altered in high-glucose environment: An in-vitro model system for precision medicine. J Dermatol Sci 2023; 109:37-46. [PMID: 36725459 DOI: 10.1016/j.jdermsci.2023.01.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/12/2022] [Accepted: 01/15/2023] [Indexed: 01/20/2023]
Abstract
BACKGROUND Impaired wound healing is a serious diabetes complication compromising patients' quality of life. However, the pathogenesis of diabetic wounds (DWs) remains incompletely understood. Human epidermal keratinocyte (HEK) is the sentinel cell that initiates healing processes after the epidermal integrity has been disrupted. OBJECTIVE This study aimed to investigate the functional roles of HEKs in wound healing and to identify candidate genes, signaling pathways and molecular signatures contributing to the DWs. METHODS HEKs were cultured in normal or high-glucose environment, followed by scratch, to mimic the microenvironment of normal wounds and DWs. Subsequently, we performed RNA sequencing and systematically analyzed the expression profiles by bioinformatics approaches. RESULTS High-glucose environment altered the keratinocyte transcriptome responses to wounding. In experimental model of DWs, we found that TNF, CYP24A1, NR4A3 and GGT1 were key overexpressed genes in keratinocytes and were implicated in multiple cellular responses. Further analysis showed that wounding in high-glucose environment activated G-protein-coupled receptor (GPCR) signaling, cAMP response element-binding protein (CREB) signaling, and adrenomedullin signaling in keratinocytes, while dysregulated skin development and immune responses as compared to their counterpart in normal glucose settings. CONCLUSION This simplified in-vitro model serves as a valuable tool to gain insights into the molecular basis of DWs and to facilitate establishment of personalized therapies in clinical practice.
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Affiliation(s)
- Yang-Yi Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shu-Mei Huang
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yu-Wen Cheng
- Department of Neurosurgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Meng-Chi Yen
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ya-Ling Hsu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Che E Lan
- Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Pan Y, Du D, Wang L, Wang X, He G, Jiang X. The Role of T Helper 22 Cells in Dermatological Disorders. Front Immunol 2022; 13:911546. [PMID: 35911703 PMCID: PMC9331286 DOI: 10.3389/fimmu.2022.911546] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 06/14/2022] [Indexed: 11/25/2022] Open
Abstract
T helper 22 (Th22) cells are a newly identified subset of CD4+ T cells that secrete the effector cytokine interleukin 22 (IL-22) upon specific antigen stimulation, barely with IFN-γ or IL-17. Increasing studies have demonstrated that Th22 cells and IL-22 play essential roles in skin barrier defense and skin disease pathogenesis since the IL-22 receptor is widely expressed in the skin, especially in keratinocytes. Herein, we reviewed the characterization, differentiation, and biological activities of Th22 cells and elucidated their roles in skin health and disease. We mainly focused on the intricate crosstalk between Th22 cells and keratinocytes and provided potential therapeutic strategies targeting the Th22/IL-22 signaling pathway.
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Affiliation(s)
- Yu Pan
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Dan Du
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Lian Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoyun Wang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, China Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Gu He
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, China Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Gu He, ; Xian Jiang,
| | - Xian Jiang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, China Institute of Inflammation and Immunology (CIII), Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Gu He, ; Xian Jiang,
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Zaharie RD, Popa C, Schlanger D, Vălean D, Zaharie F. The Role of IL-22 in Wound Healing. Potential Implications in Clinical Practice. Int J Mol Sci 2022; 23:3693. [PMID: 35409053 PMCID: PMC8998254 DOI: 10.3390/ijms23073693] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 12/14/2022] Open
Abstract
Wound healing is a complex process that is mediated and influenced by several cytokines, chemokines, and growth factors. Interleukin-22 (IL-22) is a cytokine that plays a critical role in tissue regeneration. Our study is a systematic review that addressed the implications of IL-22 in the healing of wounds caused by external factors. Thirteen studies were included in our review, most of them being experimental studies. Three clinical studies underlined the potential role of IL-22 in day-to-day clinical practice. IL-22 plays a central role in wound healing, stimulating the proliferation, migration, and differentiation of the cells involved in tissue repair. However, overexpression of IL-22 can cause negative effects, such as keloid scars or peritoneal adhesions. The results of the presented studies are promising, but further research that validates the roles of IL-22 in clinical practice and analyzes its potential implication in surgical healing is welcomed.
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Affiliation(s)
- Roxana Delia Zaharie
- Gastroenterology Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, Street Emil Isac No. 13, 400023 Cluj-Napoca, Romania;
- Gastroenterology Department, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. O. Fodor”, Street Croitorilor No. 19–21, 400162 Cluj-Napoca, Romania
| | - Călin Popa
- Surgery Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, Street Emil Isac No. 13, 400023 Cluj-Napoca, Romania; (D.V.); (F.Z.)
- Surgery Department, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. O. Fodor”, Street Croitorilor No. 19–21, 400162 Cluj-Napoca, Romania
| | - Diana Schlanger
- Surgery Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, Street Emil Isac No. 13, 400023 Cluj-Napoca, Romania; (D.V.); (F.Z.)
- Surgery Department, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. O. Fodor”, Street Croitorilor No. 19–21, 400162 Cluj-Napoca, Romania
| | - Dan Vălean
- Surgery Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, Street Emil Isac No. 13, 400023 Cluj-Napoca, Romania; (D.V.); (F.Z.)
- Surgery Department, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. O. Fodor”, Street Croitorilor No. 19–21, 400162 Cluj-Napoca, Romania
| | - Florin Zaharie
- Surgery Department, “Iuliu Haţieganu” University of Medicine and Pharmacy, Street Emil Isac No. 13, 400023 Cluj-Napoca, Romania; (D.V.); (F.Z.)
- Surgery Department, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. O. Fodor”, Street Croitorilor No. 19–21, 400162 Cluj-Napoca, Romania
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Ye G, Feng Y, Mi Z, Wang D, Lin S, Chen F, Cui J, Yu Y. Expression and Functional Characterization of c-Fos Gene in Chinese Fire-Bellied Newt Cynops Orientalis. Genes (Basel) 2021; 12:genes12020205. [PMID: 33573315 PMCID: PMC7912203 DOI: 10.3390/genes12020205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 11/16/2022] Open
Abstract
c-Fos is an immediate-early gene that modulates cellular responses to a wide variety of stimuli and also plays an important role in tissue regeneration. However, the sequence and functions of c-Fos are still poorly understood in newts. This study describes the molecular cloning and characterization of the c-Fos gene (Co-c-Fos) of the Chinese fire-bellied newt, Cynops orientalis. The full-length Co-c-Fos cDNA sequence consists of a 1290 bp coding sequence that encoded 429 amino acids. The alignment and phylogenetic analyses reveal that the amino acid sequence of Co-c-Fos shared a conserved basic leucine zipper domain, including a nuclear localization sequence and a leucine heptad repeat. The Co-c-Fos mRNA is widely expressed in various tissues and is highly and uniformly expressed along the newt limb. After limb amputation, the expression of Co-c-Fos mRNA was immediately upregulated, but rapidly declined. However, the significant upregulation of Co-c-Fos protein expression was sustained for 24 h, overlapping with the wound healing stage of C. orientalis limb regeneration. To investigate if Co-c-Fos participate in newt wound healing, a skin wound healing model is employed. The results show that the treatment of T-5224, a selective c-Fos inhibitor, could largely impair the healing process of newt’s skin wound, as well as the injury-induced matrix metalloproteinase-3 upregulation, which is fundamental to wound epithelium formation. These data suggest that Co-c-Fos might participate in wound healing by modulating the expression of its potential target gene matrix metalloproteinase-3. Our study provides important insights into mechanisms that are responsible for the initiation of newt limb regeneration.
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Affiliation(s)
- Gang Ye
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
| | - Yalong Feng
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
| | - Zhaoxiang Mi
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
| | - Du Wang
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
| | - Shuai Lin
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
| | - Fulin Chen
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
- Provincial Key Laboratory of Biotechnology of Shaanxi, Northwest University, Xi’an 710069, China
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Northwest University, Xi’an 710069, China
| | - Jihong Cui
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
- Provincial Key Laboratory of Biotechnology of Shaanxi, Northwest University, Xi’an 710069, China
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Northwest University, Xi’an 710069, China
| | - Yuan Yu
- Lab of Tissue Engineering, College of Life Sciences, Northwest University, Xi’an 710069, China; (G.Y.); (Y.F.); (Z.M.); (D.W.); (S.L.); (F.C.); (J.C.)
- Provincial Key Laboratory of Biotechnology of Shaanxi, Northwest University, Xi’an 710069, China
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Northwest University, Xi’an 710069, China
- Correspondence:
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Tan CT, Liang K, Ngo ZH, Dube CT, Lim CY. Application of 3D Bioprinting Technologies to the Management and Treatment of Diabetic Foot Ulcers. Biomedicines 2020; 8:E441. [PMID: 33096771 PMCID: PMC7589916 DOI: 10.3390/biomedicines8100441] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/12/2020] [Accepted: 10/19/2020] [Indexed: 12/21/2022] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disease with increasing prevalence worldwide. Diabetic foot ulcers (DFUs) are a serious complication of DM. It is estimated that 15-25% of DM patients develop DFU at least once in their lifetime. The lack of effective wound dressings and targeted therapy for DFUs often results in prolonged hospitalization and amputations. As the incidence of DM is projected to rise, the demand for specialized DFU wound management will continue to increase. Hence, it is of great interest to improve and develop effective DFU-specific wound dressings and therapies. In the last decade, 3D bioprinting technology has made a great contribution to the healthcare sector, with the development of personalized prosthetics, implants, and bioengineered tissues. In this review, we discuss the challenges faced in DFU wound management and how 3D bioprinting technology can be applied to advance current treatment methods, such as biomanufacturing of composite 3D human skin substitutes for skin grafting and the development of DFU-appropriate wound dressings. Future co-development of 3D bioprinting technologies with novel treatment approaches to mitigate DFU-specific pathophysiological challenges will be key to limiting the healthcare burden associated with the increasing prevalence of DM.
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Affiliation(s)
- Chew Teng Tan
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore; (C.T.T.); (K.L.); (Z.H.N.); (C.T.D.)
| | - Kun Liang
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore; (C.T.T.); (K.L.); (Z.H.N.); (C.T.D.)
| | - Zong Heng Ngo
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore; (C.T.T.); (K.L.); (Z.H.N.); (C.T.D.)
| | - Christabel Thembela Dube
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore; (C.T.T.); (K.L.); (Z.H.N.); (C.T.D.)
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Chin Yan Lim
- Skin Research Institute of Singapore (SRIS), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore; (C.T.T.); (K.L.); (Z.H.N.); (C.T.D.)
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
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Huang SM, Wu CS, Chiu MH, Wu CH, Chang YT, Chen GS, Lan CCE. High glucose environment induces M1 macrophage polarization that impairs keratinocyte migration via TNF-α: An important mechanism to delay the diabetic wound healing. J Dermatol Sci 2019; 96:159-167. [PMID: 31761388 DOI: 10.1016/j.jdermsci.2019.11.004] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/26/2019] [Accepted: 11/09/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Macrophages play important roles during wound healing, and delayed healing in diabetics is associated with sustained inflammation. M1 type macrophage is recognized to secrete excessive amount of tumor necrosis factor-alpha (TNF-α) as compared to its M2 counterpart. OBJECTIVES We hypothesized that macrophage polarization is different between diabetic and normal rats during skin wounding and has direct impact on keratinocyte function in the context of re-epithelialization. METHODS Skin wounds were created in diabetic and control rats. The phenotypes of infiltrating macrophages, the levels of TNF-α, and the rate of wound closure were determined. Using cell model, the effects of M1 type macrophage on keratinocyte migration were evaluated, and the potential regulatory pathways were determined. RESULTS The percentage of M1 macrophages and the levels of TNF-α expression were significantly higher in the perilesional area of diabetic rats as compared to control. The condition media (CM) from M1 type macrophage upregulated tissue inhibitor metalloproteinases (TIMP)-1 expression in keratinocytes and significantly reduced keratinocyte migratory capacity. Addition of neutralizing TNF-α antibody to the CM or gene-silencing of TIMP1 in keratinocytes restored the keratinocyte migratory capacity. Treating wounds of diabetic rats with TNF-α antagonist improved the wound healing process. CONCLUSIONS In summary, high glucose wound environment harbored more M1 macrophages infiltration, an event that created excess TNF-α micro-environment. TNF-α upregulated TIMP1 expression in keratinocytes and resulted in impaired keratinocyte migration. Taken together, these events contributed to impaired wound healing during diabetic condition, and targeting TNF-α is a potential therapeutic option to improve diabetic wound healing.
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Affiliation(s)
- Shu-Mei Huang
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ching-Shuang Wu
- Department of Medical Laboratory Science and Biotechnology, College of Health Science, Kaohsiung Medical University, Kaohsiung, Taiwan; Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Min-Hsi Chiu
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chin-Han Wu
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yu-Tang Chang
- Division of Pediatric Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Gwo-Shing Chen
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
| | - Cheng-Che E Lan
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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Hu SCS, Lan CCE. High-glucose environment disturbs the physiologic functions of keratinocytes: Focusing on diabetic wound healing. J Dermatol Sci 2016; 84:121-127. [PMID: 27461757 DOI: 10.1016/j.jdermsci.2016.07.008] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 07/15/2016] [Indexed: 12/15/2022]
Abstract
Impaired wound healing is a common and potentially serious complication in patients with diabetes. In recent years, disturbed physiologic functions of epidermal keratinocytes have been found to play a central role in the poor healing ability of diabetic wounds. Factors involving keratinocytes that may contribute to the dysfunctional wound healing process in diabetes include impaired keratinocyte migration and proliferation, gap junction abnormalities, chronic inflammation, chronic infections associated with defective innate immunity, impaired angiogenesis, increased oxidative stress, and abnormal expression of matrix metalloproteinases (MMPs). In this review article, we provide evidence from the scientific literature for the molecular mechanisms of delayed wound healing in diabetes, with particular emphasis on keratinocytes. Elucidating the spectrum of molecular and functional abnormalities in keratinocytes induced by high-glucose environment may lead to more effective and individualized therapeutic strategies for the prevention and management of chronic diabetic wounds.
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Affiliation(s)
- Stephen Chu-Sung Hu
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Cheng-Che E Lan
- Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dermatology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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Lacina L, Plzak J, Kodet O, Szabo P, Chovanec M, Dvorankova B, Smetana K. Cancer Microenvironment: What Can We Learn from the Stem Cell Niche. Int J Mol Sci 2015; 16:24094-110. [PMID: 26473842 PMCID: PMC4632740 DOI: 10.3390/ijms161024094] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 09/25/2015] [Accepted: 09/29/2015] [Indexed: 12/18/2022] Open
Abstract
Epidermal stem cells (ESCs) are crucial for maintenance and self- renewal of skin epithelium and also for regular hair cycling. Their role in wound healing is also indispensable. ESCs reside in a defined outer root sheath portion of hair follicle—also known as the bulge region. ECS are also found between basal cells of the interfollicular epidermis or mucous membranes. The non-epithelial elements such as mesenchymal stem cell-like elements of dermis or surrounding adipose tissue can also contribute to this niche formation. Cancer stem cells (CSCs) participate in formation of common epithelial malignant diseases such as basal cell or squamous cell carcinoma. In this review article, we focus on the role of cancer microenvironment with emphasis on the effect of cancer-associated fibroblasts (CAFs). This model reflects various biological aspects of interaction between cancer cell and CAFs with multiple parallels to interaction of normal epidermal stem cells and their niche. The complexity of intercellular interactions within tumor stroma is depicted on example of malignant melanoma, where keratinocytes also contribute the microenvironmental landscape during early phase of tumor progression. Interactions seen in normal bulge region can therefore be an important source of information for proper understanding to melanoma. The therapeutic consequences of targeting of microenvironment in anticancer therapy and for improved wound healing are included to article.
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Affiliation(s)
- Lukas Lacina
- Institute of Anatomy, 1st Faculty of Medicine, Charles University, U Nemocnice 3, 12800 Prague 2, Czech Republic.
- Department of Dermatology and Venereology, 1st Faculty of Medicine and General University Hospital, Charles University, U Nemocnice 2, 12808 Prague 2, Czech Republic.
| | - Jan Plzak
- Department of Otorhinolaryngology and Head and Neck Surgery, 1st Faculty of Medicine and University Hospital Motol, Charles University, V Úvalu 84, 15006 Prague 5, Czech Republic.
| | - Ondrej Kodet
- Institute of Anatomy, 1st Faculty of Medicine, Charles University, U Nemocnice 3, 12800 Prague 2, Czech Republic.
- Department of Dermatology and Venereology, 1st Faculty of Medicine and General University Hospital, Charles University, U Nemocnice 2, 12808 Prague 2, Czech Republic.
| | - Pavol Szabo
- Institute of Anatomy, 1st Faculty of Medicine, Charles University, U Nemocnice 3, 12800 Prague 2, Czech Republic.
| | - Martin Chovanec
- Department of Otorhinolaryngology and Head and Neck Surgery, 1st Faculty of Medicine and University Hospital Motol, Charles University, V Úvalu 84, 15006 Prague 5, Czech Republic.
| | - Barbora Dvorankova
- Institute of Anatomy, 1st Faculty of Medicine, Charles University, U Nemocnice 3, 12800 Prague 2, Czech Republic.
| | - Karel Smetana
- Institute of Anatomy, 1st Faculty of Medicine, Charles University, U Nemocnice 3, 12800 Prague 2, Czech Republic.
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