101
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Park IS. Enhancement of Wound Healing by Conditioned Medium of Adipose-Derived Stromal Cell with Photobiomodulation in Skin Wound. Int J Stem Cells 2021; 14:212-220. [PMID: 33632992 PMCID: PMC8138655 DOI: 10.15283/ijsc20175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/24/2020] [Accepted: 12/31/2020] [Indexed: 01/04/2023] Open
Abstract
Background and Objectives The objective of this study was to investigate whether conditioned medium from photobiomodulation (PBM) irradiated adipose-derived stromal cell (ASC) spheroids prior to implanting could stimulate angiogenesis and tissue regeneration to improve functional recovery of skin tissue in an animal skin wound model. Methods and Results ASC were split and seeded on chitosan-coated 24 well plate at a density of 7.5×104 cells/cm2, and allowed to adhere at 37℃. Within 3 days of culture, ASC formed spheroids by PBM irradiation. Conditioned medium (CM) fractions were collected from the PBM-ASC to yield nor adipose-derived stromal cell spheroid (spheroid) and PBM-spheroid, respectively, centrifuged at 13,000 g at 4℃ for 10 min, and stored prior to use for ELISA, protein assay, or in vivo wound-healing assays. Phosphate-buffered saline, cultured CM from ASCs, PBM irradiation prior to implanting conditioned medium from ASC, cultured CM from ASC spheroid, and PBM–spheroid-CM (PSC) were transplanted into a wound bed in athymic mice to evaluate therapeutic effects of PSC in vivo. PSC enhanced wound closure in a skin injury model compared to PBS, CM, PBM–CM, and spheroid-CM. The density of vascular formations increased as a result of angiogenic factors released by the wound bed and enhanced tissue regeneration at the lesion site. Conclusions These results indicate that implant of PSC can significantly improve functional recovery compared to PBS, CM, PBM–CM, or spheroid-CM treatment. Implant of PSC may be an effective form of paracrine mediated therapy for treating a wound bed.
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Affiliation(s)
- In-Su Park
- Cell Therapy Center, Ajou University School of Medicine, Suwon, Korea
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102
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Dmitrieva NI, Walts AD, Nguyen DP, Grubb A, Zhang X, Wang X, Ping X, Jin H, Yu Z, Yu ZX, Yang D, Schwartzbeck R, Dalgard CL, Kozel BA, Levin MD, Knutsen RH, Liu D, Milner JD, López DB, O'Connell MP, Lee CCR, Myles IA, Hsu AP, Freeman AF, Holland SM, Chen G, Boehm M. Impaired angiogenesis and extracellular matrix metabolism in autosomal-dominant hyper-IgE syndrome. J Clin Invest 2021; 130:4167-4181. [PMID: 32369445 DOI: 10.1172/jci135490] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/29/2020] [Indexed: 12/21/2022] Open
Abstract
There are more than 7000 described rare diseases, most lacking specific treatment. Autosomal-dominant hyper-IgE syndrome (AD-HIES, also known as Job's syndrome) is caused by mutations in STAT3. These patients present with immunodeficiency accompanied by severe nonimmunological features, including skeletal, connective tissue, and vascular abnormalities, poor postinfection lung healing, and subsequent pulmonary failure. No specific therapies are available for these abnormalities. Here, we investigated underlying mechanisms in order to identify therapeutic targets. Histological analysis of skin wounds demonstrated delayed granulation tissue formation and vascularization during skin-wound healing in AD-HIES patients. Global gene expression analysis in AD-HIES patient skin fibroblasts identified deficiencies in a STAT3-controlled transcriptional network regulating extracellular matrix (ECM) remodeling and angiogenesis, with hypoxia-inducible factor 1α (HIF-1α) being a major contributor. Consistent with this, histological analysis of skin wounds and coronary arteries from AD-HIES patients showed decreased HIF-1α expression and revealed abnormal organization of the ECM and altered formation of the coronary vasa vasorum. Disease modeling using cell culture and mouse models of angiogenesis and wound healing confirmed these predicted deficiencies and demonstrated therapeutic benefit of HIF-1α-stabilizing drugs. The study provides mechanistic insights into AD-HIES pathophysiology and suggests potential treatment options for this rare disease.
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Affiliation(s)
- Natalia I Dmitrieva
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Avram D Walts
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Dai Phuong Nguyen
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Alex Grubb
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Xue Zhang
- Bioinformatics and Systems Biology Core, and
| | - Xujing Wang
- Bioinformatics and Systems Biology Core, and
| | - Xianfeng Ping
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Hui Jin
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Zhen Yu
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Zu-Xi Yu
- Pathology Core, National Heart, Lung, and Blood Institute (NHLBI), NIH, Bethesda, Maryland, USA
| | - Dan Yang
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Robin Schwartzbeck
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Clifton L Dalgard
- Department of Anatomy, Physiology & Genetics.,The American Genome Center, and.,Collaborative Health Initiative Research Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Beth A Kozel
- Laboratory of Vascular and Matrix Genetics, NHLBI
| | - Mark D Levin
- Laboratory of Vascular and Matrix Genetics, NHLBI
| | | | - Delong Liu
- Laboratory of Vascular and Matrix Genetics, NHLBI
| | - Joshua D Milner
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases (NIAID)
| | - Diego B López
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases (NIAID)
| | - Michael P O'Connell
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases (NIAID)
| | - Chyi-Chia Richard Lee
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute (NCI), and
| | - Ian A Myles
- Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, Maryland, USA
| | - Amy P Hsu
- Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, Maryland, USA
| | - Alexandra F Freeman
- Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, Maryland, USA
| | - Steven M Holland
- Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, Maryland, USA
| | - Guibin Chen
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
| | - Manfred Boehm
- Laboratory of Cardiovascular Regenerative Medicine, Translational Vascular Medicine Branch
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103
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Ochiai D, Abe Y, Fukutake M, Sato Y, Ikenoue S, Kasuga Y, Masuda H, Tanaka M. Cell sheets using human amniotic fluid stem cells reduce tissue fibrosis in murine full-thickness skin wounds. Tissue Cell 2021; 68:101472. [PMID: 33360545 DOI: 10.1016/j.tice.2020.101472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 10/22/2022]
Abstract
The use of mesenchymal stem cell sheets is a promising strategy for skin regeneration. The injection of dissociated human amniotic fluid stem cells (hAFSCs) was recently found to accelerate cutaneous wound healing with reduced fibrotic scarring, similar to fetal wound healing. However, the use of hAFSCs in applications of cell sheet technology remains limited. The aim of this study was to determine the in vivo efficacy of in vitro-cultured hAFSC sheets in wound healing. The cell sheets were characterized by immunohistochemistry and RT-qPCR and grafted onto full-thickness wounds in BALB/c mice. The wound size was measured, and re-epithelialization, granulation tissue area, and collagen content of the regenerated wound were analyzed histologically. Although the hAFSC sheet contained abundant extracellular matrix molecules and expressed high levels of anti-fibrotic mediators, its grafting did not affect wound closure or the size of the granulation tissue area. In contrast, the organization of type I collagen bundles in the regenerated wound was markedly reduced, while the levels of type III collagen were increased after implantation of the hAFSC sheet. These results suggest that hAFSC sheets can exert anti-fibrotic properties without delaying wound closure.
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Affiliation(s)
- Daigo Ochiai
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan.
| | - Yushi Abe
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Marie Fukutake
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Yu Sato
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Satoru Ikenoue
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Yoshifumi Kasuga
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Hirotaka Masuda
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Mamoru Tanaka
- Department of Obstetrics & Gynecology, Keio University School of Medicine, Tokyo, Japan
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104
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Wan L, Jiang D, Correa-Gallegos D, Ramesh P, Zhao J, Ye H, Zhu S, Wannemacher J, Volz T, Rinkevich Y. Connexin43 gap junction drives fascia mobilization and repair of deep skin wounds. Matrix Biol 2021; 97:58-71. [PMID: 33508427 DOI: 10.1016/j.matbio.2021.01.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 12/23/2022]
Abstract
Deep and voluminous skin wounds are repaired with scars, by mobilization of fibroblasts and extracellular matrix from fascia, deep below the skin. The molecular trigger of this novel repair mechanism is incompletely understood. Here we reveal that the gap junction alpha-1 protein (Connexin43, Cx43) is the key to patch repair of deep wounds. By combining full-thickness wound models with fibroblast lineage specific transgenic lines, we show Cx43 expression is substantially upregulated in specialized fibroblasts of the fascia deep beneath the skin that are responsible for scar formation. Using live imaging of fascia fibroblasts and fate tracing of the fascia extracellular matrix we show that Cx43 inhibition disrupts calcium oscillations in cultured fibroblasts and that this inhibits collective migration of fascia EPFs necessary to mobilize fascia matrix into open wounds. Cell-cell communication through Cx43 thus mediates matrix movement and scar formation, and is necessary for patch repair of voluminous wounds. These mechanistic findings have broad clinical implications toward treating fibrosis, aggravated scarring and impaired wound healing.
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Affiliation(s)
- Li Wan
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Dongsheng Jiang
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Donovan Correa-Gallegos
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Pushkar Ramesh
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Jiakuan Zhao
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Haifeng Ye
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Shaohua Zhu
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Juliane Wannemacher
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany
| | - Thomas Volz
- Technical University of Munich, School of Medicine, Klinikum rechts der Isar, Department of Dermatology and Allergology, Munich, Germany
| | - Yuval Rinkevich
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Comprehensive Pneumology Center, Munich, Germany; Helmholtz Zentrum München, Institute of Regenerative Biology and Medicine, Munich, Germany.
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105
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The Impact of Composites with Silicate-Based Glasses and Gold Nanoparticles on Skin Wound Regeneration. Molecules 2021; 26:molecules26030620. [PMID: 33504095 PMCID: PMC7866013 DOI: 10.3390/molecules26030620] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 01/20/2023] Open
Abstract
The silver content of the skin regeneration ointments can influence its regeneration process but in the meantime, it can take the benefit of the antibacterial properties of silver by avoiding the bacterial infection of an open wound. In the current study, the skin healing and regeneration capacity of bioactive glass with spherical gold nanocages (BGAuIND) in the Vaseline ointments were evaluated in vivo comparing the bioactive glass (BG)-Vaseline and bioactive glass with spherical gold (BGAuSP)-Vaseline ointments. Spherical gold nanocages are stabilized with silver and as a consequence the BGAuIND exhibits great antibacterial activity. Histological examination of the cutaneous tissue performed on day 8 indicates a more advanced regeneration process in rats treated with BGAuSP-Vaseline. The histopathological examination also confirms the results obtained after 11 days post-intervention, when the skin is completely regenerated at rats treated with BGAuSP-Vaseline compared with the others groups where the healing was incomplete. This result is also confirmed by the macroscopic images of the evolution of wounds healing. As expected, the silver content influences the wound healing process but after two weeks, for all of the post-interventional trials from the groups of rats, the skin healing was completely.
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106
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Hu MS, Maan ZN, Leavitt T, Hong WX, Rennert RC, Marshall CD, Borrelli MR, Zhu TN, Esquivel M, Zimmermann A, McArdle A, Chung MT, Foster DS, Jones RE, Gurtner GC, Giaccia AJ, Lorenz HP, Weissman IL, Longaker MT. Wounds Inhibit Tumor Growth In Vivo. Ann Surg 2021; 273:173-180. [PMID: 30829705 PMCID: PMC7169436 DOI: 10.1097/sla.0000000000003255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of this study was to determine the interaction of full thickness excisional wounds and tumors in vivo. SUMMARY OF BACKGROUND DATA Tumors have been described as wounds that do not heal due to similarities in stromal composition. On the basis of observations of slowed tumor growth after ulceration, we hypothesized that full thickness excisional wounds would inhibit tumor progression in vivo. METHODS To determine the interaction of tumors and wounds, we developed a tumor xenograft/allograft (human head and neck squamous cell carcinoma SAS/mouse breast carcinoma 4T1) wound mouse model. We examined tumor growth with varying temporospatial placement of tumors and wounds or ischemic flap. In addition, we developed a tumor/wound parabiosis model to understand the ability of tumors and wounds to recruit circulating progenitor cells. RESULTS Tumor growth inhibition by full thickness excisional wounds was dose-dependent, maintained by sequential wounding, and relative to distance. This effect was recapitulated by placement of an ischemic flap directly adjacent to a xenograft tumor. Using a parabiosis model, we demonstrated that a healing wound was able to recruit significantly more circulating progenitor cells than a growing tumor. Tumor inhibition by wound was unaffected by presence of an immune response in an immunocompetent model using a mammary carcinoma. Utilizing functional proteomics, we identified 100 proteins differentially expressed in tumors and wounds. CONCLUSION Full thickness excisional wounds have the ability to inhibit tumor growth in vivo. Further research may provide an exact mechanism for this remarkable finding and new advances in wound healing and tumor biology.
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Affiliation(s)
- Michael S. Hu
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
- Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Zeshaan N. Maan
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Tripp Leavitt
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Wan Xing Hong
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Robert C. Rennert
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Clement D. Marshall
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Mimi R. Borrelli
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Ted N. Zhu
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Mikaela Esquivel
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Andrew Zimmermann
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Adrian McArdle
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Michael T. Chung
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Deshka S. Foster
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Ruth Ellen Jones
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Geoffrey C. Gurtner
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Amato J. Giaccia
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - H. Peter Lorenz
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Irving L. Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
| | - Michael T. Longaker
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
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107
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Hwang WC, Seo SH, Kang M, Kang RH, Di Paolo G, Choi KY, Min DS. PLD1 and PLD2 differentially regulate the balance of macrophage polarization in inflammation and tissue injury. J Cell Physiol 2020; 236:5193-5211. [PMID: 33368247 PMCID: PMC8048932 DOI: 10.1002/jcp.30224] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/11/2020] [Accepted: 12/07/2020] [Indexed: 02/06/2023]
Abstract
Phospholipase D (PLD) isoforms PLD1 and PLD2 serve as the primary nodes where diverse signaling pathways converge. However, their isoform‐specific functions remain unclear. We showed that PLD1 and PLD2 selectively couple to toll‐like receptor 4 (TLR4) and interleukin 4 receptor (IL‐4R) and differentially regulate macrophage polarization of M1 and M2 via the LPS–MyD88 axis and the IL‐4–JAK3 signaling, respectively. Lipopolysaccharide (LPS) enhanced TLR4 or MyD88 interaction with PLD1; IL‐4 induced IL‐4R or JAK3 association with PLD2, indicating isozyme‐specific signaling events. PLD1 and PLD2 are indispensable for M1 polarization and M2 polarization, respectively. Genetic and pharmacological targeting of PLD1 conferred protection against LPS‐induced sepsis, cardiotoxin‐induced muscle injury, and skin injury by promoting the shift toward M2; PLD2 ablation intensified disease severity by promoting the shift toward M1. Enhanced Foxp3+ regulatory T cell recruitment also influenced the anti‐inflammatory phenotype of Pld1LyzCre macrophages. We reveal a previously uncharacterized role of PLD isoforms in macrophage polarization, signifying potential pharmacological interventions for macrophage modulation.
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Affiliation(s)
- Won Chan Hwang
- College of Pharmacy, Yonsei University, Incheon, Republic of Korea.,Department of Molecular Biology, Pusan National University, Busan, Republic of Korea
| | - Seol Hwa Seo
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Minju Kang
- College of Pharmacy, Yonsei University, Incheon, Republic of Korea
| | - Rae Hee Kang
- College of Pharmacy, Yonsei University, Incheon, Republic of Korea
| | - Gilbert Di Paolo
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York City, New York, USA
| | - Kang-Yell Choi
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Do Sik Min
- College of Pharmacy, Yonsei University, Incheon, Republic of Korea
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108
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Vonbrunn E, Mueller M, Pichlsberger M, Sundl M, Helmer A, Wallner SA, Rinner B, Tuca AC, Kamolz LP, Brislinger D, Glasmacher B, Lang-Olip I. Electrospun PCL/PLA Scaffolds Are More Suitable Carriers of Placental Mesenchymal Stromal Cells Than Collagen/Elastin Scaffolds and Prevent Wound Contraction in a Mouse Model of Wound Healing. Front Bioeng Biotechnol 2020; 8:604123. [PMID: 33425870 PMCID: PMC7793771 DOI: 10.3389/fbioe.2020.604123] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 11/25/2020] [Indexed: 12/18/2022] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) exert beneficial effects during wound healing, and cell-seeded scaffolds are a promising method of application. Here, we compared the suitability of a clinically used collagen/elastin scaffold (Matriderm) with an electrospun Poly(ε-caprolactone)/poly(l-lactide) (PCL/PLA) scaffold as carriers for human amnion-derived MSCs (hAMSCs). We created an epidermal-like PCL/PLA scaffold and evaluated its microstructural, mechanical, and functional properties. Sequential spinning of different PCL/PLA concentrations resulted in a wide-meshed layer designed for cell-seeding and a dense-meshed layer for apical protection. The Matriderm and PCL/PLA scaffolds then were seeded with hAMSCs, with or without Matrigel coating. The quantity and quality of the adherent cells were evaluated in vitro. The results showed that hAMSCs adhered to and infiltrated both scaffold types but on day 3, more cells were observed on PCL/PLA than on Matriderm. Apoptosis and proliferation rates were similar for all carriers except the coated Matriderm, where apoptotic cells were significantly enhanced. On day 8, the number of cells decreased on all carrier types except the coated Matriderm, which had consistently low cell numbers. Uncoated Matriderm had the highest percentage of proliferative cells and lowest apoptosis rate of all carrier types. Each carrier also was topically applied to skin wound sites in a mouse model and analyzed in vivo over 14 days via optical imaging and histological methods, which showed detectable hAMSCs on all carrier types on day 8. On day 14, all wounds exhibited newly formed epidermis, and all carriers were well-integrated into the underlying dermis and showing signs of degradation. However, only wounds treated with uncoated PCL/PLA maintained a round appearance with minimal contraction. Overall, the results support a 3-day in vitro culture of scaffolds with hAMSCs before wound application. The PCL/PLA scaffold showed higher cell adherence than Matriderm, and the effect of the Matrigel coating was negligible, as all carrier types maintained sufficient numbers of transplanted cells in the wound area. The anti-contractive effects of the PCL/PLA scaffold offer potential new therapeutic approaches to wound care.
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Affiliation(s)
- Eva Vonbrunn
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Marc Mueller
- Institute of Multiphase Processes, Leibniz University Hanover, Hannover, Germany
| | - Melanie Pichlsberger
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Monika Sundl
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Alexander Helmer
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | | | - Beate Rinner
- Division of Biomedical Research, Medical University of Graz, Graz, Austria
| | - Alexandru-Cristian Tuca
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.,COREMED - Cooperative Centre for Regenerative Medicine, Joanneum Research Forschungsgesellschaft mbH, Graz, Austria
| | - Dagmar Brislinger
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Birgit Glasmacher
- Institute of Multiphase Processes, Leibniz University Hanover, Hannover, Germany
| | - Ingrid Lang-Olip
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
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109
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Poblete Jara C, Catarino CM, Lei Y, Velloso LA, Karande P, Velander WH, Pereira de Araujo E. Demonstration of re-epithelialization in a bioprinted human skin equivalent wound model. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.bprint.2020.e00102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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110
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Song M, Chen L, Zhang L, Li C, Coffie JW, Fang Z, Zhang L, Wang S, Gao X, Wang H. Cryptotanshinone enhances wound healing in type 2 diabetes with modulatory effects on inflammation, angiogenesis and extracellular matrix remodelling. PHARMACEUTICAL BIOLOGY 2020; 58:845-853. [PMID: 32870741 PMCID: PMC8641666 DOI: 10.1080/13880209.2020.1803369] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
CONTEXT Cryptotanshinone (CT) is a diterpene quinone compound from Salvia miltiorrhiza Bge. Labiatae has been widely used in cardio-cerebral vascular diseases, which could be potentially effective in treating diabetic wounds. OBJECTIVE This study evaluates the wound healing activity of CT by employing an excisional wound splinting model in db/db mice. MATERIALS AND METHODS Wounds were induced at the dorsum of non-diabetic (db/+) and diabetic (db/db) mice and treated with sodium carboxymethyl cellulose (CMC-Na) or 300 mg/kg/d CT for 16 days. Wound closure was measured every two days. Body weight, fasting blood glucose, re-epithelialization, granulation, leukocyte infiltration, capillary density, collagen deposition and expressions of CXCL1, CXCL2, VEGF, Ang-1, p-eNOS, eNOS, α-SMA, MMP2 and MMP9 were analysed. Expression of VEGF and tube formation was measured in vitro with human umbilical vein endothelial cells (HUVECs). RESULTS CT significantly accelerated rate of wound closure, as the contraction ratio increased from 68% (non-treated group) to 83% (CT-treated group) at days 16 post-injury. A significant increase was observed in re-epithelialization and granulation tissue formation. Mechanistically, CT suppressed leukocyte infiltration and CXCL1 and CXCL2 expression. CT treatment also increased blood vessel density and expression level of VEGF, Ang-1 and p-eNOS. In vitro, CT boosted expression of VEGF and tube formation of endothelial cells. Moreover, extracellular matrix (ECM) remodelling was enhanced by CT via promoting fibroblast transformation and inhibiting MMP2 and MMP9. CONCLUSIONS Our study provides evidence that CT could be developed as a potential therapeutic agent for the treatment of chronic diabetic wound healing.
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Affiliation(s)
- Min Song
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lu Chen
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lusha Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Chunxiao Li
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Joel Wake Coffie
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhirui Fang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Liyuan Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shaoxia Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiumei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hong Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin, China
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Chinese Medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- CONTACT Hong Wang , School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Rd., West Area, Tuanbo New Town, Jinghai Dist., Tianjin301617, China
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Bornes L, Windoffer R, Leube RE, Morgner J, van Rheenen J. Scratch-induced partial skin wounds re-epithelialize by sheets of independently migrating keratinocytes. Life Sci Alliance 2020; 4:4/1/e202000765. [PMID: 33257474 PMCID: PMC7723264 DOI: 10.26508/lsa.202000765] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/19/2022] Open
Abstract
Intravital microscopy of scratch wounds in the murine skin reveals that individual basal keratinocytes migrate in a swarming fashion towards the wound to bypass intact hair follicles, thereby facilitating fast repair. Re-epithelialization is a crucial process to reestablish the protective barrier upon wounding of the skin. Although this process is well described for wounds where the complete epidermis and dermis is damaged, little is known about the re-epithelialization strategy in more frequently occurring smaller scratch wounds in which structures such as the hair follicles and sweat glands stay intact. To study this, we established a scratch wound model to follow individual keratinocytes in all epidermal layers in the back skin of mice by intravital microscopy. We discover that keratinocytes adopt a re-epithelialization strategy that enables them to bypass immobile obstacles such as hair follicles. Wound-induced cell loss is replenished by proliferation in a distinct zone away from the wound and this proliferation does not affect overall migration pattern. Whereas suprabasal keratinocytes are rather passive, basal keratinocytes move as a sheet of independently migrating cells into the wound, thereby constantly changing their direct neighboring cells enabling them to bypass intact obstacles. This re-epithelialization strategy results in a fast re-establishment of the protective skin barrier upon wounding.
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Affiliation(s)
- Laura Bornes
- Division of Molecular Pathology, Oncode Institute, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Reinhard Windoffer
- Institute of Molecular and Cellular Anatomy, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany
| | - Rudolf E Leube
- Institute of Molecular and Cellular Anatomy, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany
| | - Jessica Morgner
- Division of Molecular Pathology, Oncode Institute, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Jacco van Rheenen
- Division of Molecular Pathology, Oncode Institute, Netherlands Cancer Institute, Amsterdam, The Netherlands
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112
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Shafiee A, Cavalcanti AS, Saidy NT, Schneidereit D, Friedrich O, Ravichandran A, De-Juan-Pardo EM, Hutmacher DW. Convergence of 3D printed biomimetic wound dressings and adult stem cell therapy. Biomaterials 2020; 268:120558. [PMID: 33307369 DOI: 10.1016/j.biomaterials.2020.120558] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 02/06/2023]
Abstract
Biomimetically designed medical-grade polycaprolactone (mPCL) dressings are 3D-printed with pore architecture and anisotropic mechanical characteristics that favor skin wound healing with reduced scarring. Melt electrowritten mPCL dressings are seeded with human gingival tissue multipotent mesenchymal stem/stromal cells and cryopreserved using a clinically approved method. The regenerative potential of fresh or frozen cell-seeded mPCL dressing is compared in a splinted full-thickness excisional wound in a rat model over six weeks. The application of 3D-printed mPCL dressings decreased wound contracture and significantly improved skin regeneration through granulation and re-epithelialization compared to control groups. Combining 3D-printed biomimetic wound dressings and precursor cell delivery enhances physiological wound closure with reduced scar tissue formation.
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Affiliation(s)
- Abbas Shafiee
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD, 4059, Australia; UQ Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, 4102, Australia; Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD, 4029, Australia.
| | - Amanda S Cavalcanti
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Navid T Saidy
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD, 4059, Australia; The University of Queensland, School of Dentistry, Herston, Queensland, Australia
| | - Dominik Schneidereit
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Paul-Gordan-Str.3, 91052, Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Paul-Gordan-Str.3, 91052, Erlangen, Germany
| | - Akhilandeshwari Ravichandran
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Elena M De-Juan-Pardo
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Dietmar W Hutmacher
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Brisbane, QLD, 4059, Australia; Australian Research Council (ARC) Training Centre in Additive Biomanufacturing, Queensland University of Technology (QUT), Kelvin Grove, QLD, 4059, Australia.
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113
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Extracellular matrix-based biomaterials as adipose-derived stem cell delivery vehicles in wound healing: a comparative study between a collagen scaffold and two xenografts. Stem Cell Res Ther 2020; 11:510. [PMID: 33246508 PMCID: PMC7694925 DOI: 10.1186/s13287-020-02021-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/06/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Stem cell therapies represent a promising tool in regenerative medicine. Considering the drawbacks of direct stem cell injections (e.g. poor cell localisation), extracellular matrix-based biomaterials (e.g. scaffolds and tissue grafts), due to their compositional biofunctionality and cytocompatibility, are under investigation as potential stem cell carriers. METHODS The present study assessed the potential of three commercially available extracellular matrix-based biomaterials [a collagen/glycosaminoglycan scaffold (Integra™ Matrix Wound Dressing), a decellularised porcine peritoneum (XenoMEM™) and a porcine urinary bladder (MatriStem™)] as human adipose-derived stem cell delivery vehicles. RESULTS Both tissue grafts induced significantly (p < 0.01) higher human adipose-derived stem cell proliferation in vitro over the collagen scaffold, especially when the cells were seeded on the basement membrane side. Human adipose-derived stem cell phenotype and trilineage differentiation potential was preserved in all biomaterials. In a splinted wound healing nude mouse model, in comparison to sham, biomaterials alone and cells alone groups, all biomaterials seeded with human adipose-derived stem cells showed a moderate improvement of wound closure, a significantly (p < 0.05) lower wound gap and scar index and a significantly (p < 0.05) higher proportion of mature collagen deposition and angiogenesis (the highest, p < 0.01, was observed for the cell loaded at the basement membrane XenoMEM™ group). All cell-loaded biomaterial groups retained more cells at the implantation side than the direct injection group, even though they were loaded with half of the cells than the cell injection group. CONCLUSIONS This study further advocates the use of extracellular matrix-based biomaterials (in particular porcine peritoneum) as human adipose-derived stem cell delivery vehicles. Comparative analysis of a collagen scaffold (Integra™ Matrix Wound Dressing) and two tissue grafts [decellularised porcine peritoneum (XenoMEM™) and porcine urinary bladder (MatriStem™)] as human adipose-derived stem cells carriers.
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114
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Liu C, Teo MHY, Pek SLT, Wu X, Leong ML, Tay HM, Hou HW, Ruedl C, Moss SE, Greenwood J, Tavintharan S, Hong W, Wang X. A Multifunctional Role of Leucine-Rich α-2-Glycoprotein 1 in Cutaneous Wound Healing Under Normal and Diabetic Conditions. Diabetes 2020; 69:2467-2480. [PMID: 32887674 PMCID: PMC7576570 DOI: 10.2337/db20-0585] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/24/2020] [Indexed: 12/26/2022]
Abstract
Delayed wound healing is commonly associated with diabetes. It may lead to amputation and death if not treated in a timely fashion. Limited treatments are available partially due to the poor understanding of the complex disease pathophysiology. Here, we investigated the role of leucine-rich α-2-glycoprotein 1 (LRG1) in normal and diabetic wound healing. First, our data showed that LRG1 was significantly increased at the inflammation stage of murine wound healing, and bone marrow-derived cells served as a major source of LRG1. LRG1 deletion causes impaired immune cell infiltration, reepithelialization, and angiogenesis. As a consequence, there is a significant delay in wound closure. On the other hand, LRG1 was markedly induced in diabetic wounds in both humans and mice. LRG1-deficient mice were resistant to diabetes-induced delay in wound repair. We further demonstrated that this could be explained by the mitigation of increased neutrophil extracellular traps (NETs) in diabetic wounds. Mechanistically, LRG1 mediates NETosis in an Akt-dependent manner through TGFβ type I receptor kinase ALK5. Taken together, our studies demonstrated that LRG1 derived from bone marrow cells is required for normal wound healing, revealing a physiological role for this glycoprotein, but that excess LRG1 expression in diabetes is pathogenic and contributes to chronic wound formation.
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Affiliation(s)
- Chenghao Liu
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Melissa Hui Yen Teo
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
| | | | - Xiaoting Wu
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Mei Ling Leong
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Hui Min Tay
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Han Wei Hou
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Christiane Ruedl
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Stephen E Moss
- Institute of Ophthalmology, University College London, London, U.K
| | - John Greenwood
- Institute of Ophthalmology, University College London, London, U.K
| | - Subramaniam Tavintharan
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
- Diabetes Centre, Admiralty Medical Centre, Singapore
- Division of Endocrinology, Department of Medicine, Khoo Teck Puat Hospital, Singapore
| | - Wanjin Hong
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
| | - Xiaomeng Wang
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
- Singapore Eye Research Institute, The Academia, Singapore
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Yaron JR, Zhang L, Guo Q, Awo EA, Burgin M, Schutz LN, Zhang N, Kilbourne J, Daggett-Vondras J, Lowe KM, Lucas AR. Recombinant Myxoma Virus-Derived Immune Modulator M-T7 Accelerates Cutaneous Wound Healing and Improves Tissue Remodeling. Pharmaceutics 2020; 12:E1003. [PMID: 33105865 PMCID: PMC7690590 DOI: 10.3390/pharmaceutics12111003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 12/26/2022] Open
Abstract
Complex dermal wounds represent major medical and financial burdens, especially in the context of comorbidities such as diabetes, infection and advanced age. New approaches to accelerate and improve, or "fine tune" the healing process, so as to improve the quality of cutaneous wound healing and management, are the focus of intense investigation. Here, we investigate the topical application of a recombinant immune modulating protein which inhibits the interactions of chemokines with glycosaminoglycans, reducing damaging or excess inflammation responses in a splinted full-thickness excisional wound model in mice. M-T7 is a 37 kDa-secreted, virus-derived glycoprotein that has demonstrated therapeutic efficacy in numerous animal models of inflammatory immunopathology. Topical treatment with recombinant M-T7 significantly accelerated wound healing when compared to saline treatment alone. Healed wounds exhibited properties of improved tissue remodeling, as determined by collagen maturation. M-T7 treatment accelerated the rate of peri-wound angiogenesis in the healing wounds with increased levels of TNF, VEGF and CD31. The immune cell response after M-T7 treatment was associated with a retention of CCL2 levels, and increased abundances of arginase-1-expressing M2 macrophages and CD4 T cells. Thus, topical treatment with recombinant M-T7 promotes a pro-resolution environment in healing wounds, and has potential as a novel treatment approach for cutaneous tissue repair.
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Affiliation(s)
- Jordan R. Yaron
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Liqiang Zhang
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Qiuyun Guo
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Enkidia A. Awo
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Michelle Burgin
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Lauren N. Schutz
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Nathan Zhang
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
| | - Jacquelyn Kilbourne
- Department of Animal Care and Technologies, Arizona State University, Tempe, AZ 85287, USA; (J.K.); (J.D.-V.); (K.M.L.)
| | - Juliane Daggett-Vondras
- Department of Animal Care and Technologies, Arizona State University, Tempe, AZ 85287, USA; (J.K.); (J.D.-V.); (K.M.L.)
| | - Kenneth M. Lowe
- Department of Animal Care and Technologies, Arizona State University, Tempe, AZ 85287, USA; (J.K.); (J.D.-V.); (K.M.L.)
| | - Alexandra R. Lucas
- Center for Personalized Diagnostics and Center for Immunotherapy, Vaccines and Virotherapy, The Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; (J.R.Y.); (Q.G.); (E.A.A.); (M.B.); (L.N.S.); (N.Z.)
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Mammalian cold-inducible RNA-binding protein facilitates wound healing through activation of AMP-activated protein kinase. Biochem Biophys Res Commun 2020; 533:1191-1197. [PMID: 33041006 DOI: 10.1016/j.bbrc.2020.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 10/01/2020] [Indexed: 02/04/2023]
Abstract
The skin is usually maintained within a temperature range that induces cold-inducible RNA-binding protein (Cirp). To determine whether Cirp plays a role in barrier function of the skin, we analyzed the skin wound healing in cirp-knockout (KO) mice. They exhibited delayed wound healing compared with wild-type littermates in the absence as well as presence of skin contraction. Dermal fibroblasts and keratinocytes from cirp-KO mice migrated slower than those from wild-type mice. When expression of Cirp was downregulated in cultured cells, migration rate was decreased. Cirp bound liver-kinase-B1 (LKB1) in the nucleus and was suggested to enhance its translocation to the cytoplasm, resulting in enhanced phosphorylation of AMP-activated protein kinase (AMPK) and cell motility. Stimulation of AMPK ameliorated the delayed wound healing in cirp-KO mice. These findings suggest that Cirp facilitates skin wound healing by enhancing cell migration via AMPK, indicating roles for Cirp in linking skin temperature with metabolism and defense mechanism.
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117
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Shin DY, Park JU, Choi MH, Kim S, Kim HE, Jeong SH. Polydeoxyribonucleotide-delivering therapeutic hydrogel for diabetic wound healing. Sci Rep 2020; 10:16811. [PMID: 33033366 PMCID: PMC7546631 DOI: 10.1038/s41598-020-74004-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 09/17/2020] [Indexed: 02/07/2023] Open
Abstract
Patients with diabetes experience delayed wound healing because of the uncontrolled glucose level in their bloodstream, which leads to impaired function of white blood cells, poor circulation, decreased production and repair of new blood vessels. Treatment using polydeoxyribonucleotide (PDRN), which is a DNA extracted from the sperm cells of salmon, has been introduced to accelerate the healing process of diabetic wounds. To accelerate the wound-healing process, sustained delivery of PDRN is critical. In this study, taking advantage of the non-invasive gelation property of alginate, PDRN was loaded inside the hydrogel (Alg-PDRN). The release behavior of PDRN was altered by controlling the crosslinking density of the Alg hydrogel. The amount of PDRN was the greatest inside the hydrogel with the highest crosslinking density because of the decreased diffusion. However, there was an optimal degree of crosslinking for the effective release of PDRN. In vitro studies using human dermal fibroblasts and diabetes mellitus fibroblasts and an in ovo chorioallantoic membrane assay confirmed that the Alg-PDRN hydrogel effectively induced cell proliferation and expression of angiogenic growth factors and promoted new blood vessel formation. Its effectiveness for accelerated diabetic wound healing was also confirmed in an in-vivo animal experiment using a diabetic mouse model.
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Affiliation(s)
- Da Yong Shin
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji-Ung Park
- Department of Plastic and Reconstructive Surgery, Seoul National University Boramae Medical Center, Seoul, 07061, Republic of Korea
| | - Min-Ha Choi
- Department of Plastic and Reconstructive Surgery, Seoul National University Boramae Medical Center, Seoul, 07061, Republic of Korea
| | - Sukwha Kim
- Medical Big Data Research Center, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Gwanggyo, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16229, Republic of Korea
| | - Seol-Ha Jeong
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
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Ahn S, Chantre CO, Ardoña HAM, Gonzalez GM, Campbell PH, Parker KK. Biomimetic and estrogenic fibers promote tissue repair in mice and human skin via estrogen receptor β. Biomaterials 2020; 255:120149. [PMID: 32521331 PMCID: PMC9812367 DOI: 10.1016/j.biomaterials.2020.120149] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 05/22/2020] [Accepted: 05/22/2020] [Indexed: 01/07/2023]
Abstract
The dynamic changes in estrogen levels throughout aging and during the menstrual cycle influence wound healing. Elevated estrogen levels during the pre-ovulation phase accelerate tissue repair, whereas reduced estrogen levels in post-menopausal women lead to slow healing. Although previous reports have shown that estrogen may potentiate healing by triggering the estrogen receptor (ER)-β signaling pathway, its binding to ER-α has been associated with severe collateral effects and has therefore limited its use as a therapeutic agent. To this end, soy phytoestrogens, which preferentially bind to the ER-β, are currently being explored as a safer therapeutic alternative to estrogen. However, the development and evaluation of phytoestrogen-based materials as local ER-β modulators remains largely unexplored. Here, we engineered biomimetic and estrogenic nanofiber wound dressings built from soy protein isolate (SPI) and hyaluronic acid (HA) using immersion rotary jet spinning. These engineered scaffolds were shown to successfully recapitulate the native dermal architecture, while delivering an ER-β-triggering phytoestrogen (genistein). When tested in ovariectomized mouse and ex vivo human skin tissues, HA/SPI scaffolds outperformed controls (no treatment or HA only scaffolds) towards promoting cutaneous tissue repair. These improved healing outcomes were prevented when the ER-β pathway was genetically or chemically inhibited. Our findings suggest that estrogenic fibrous scaffolds facilitate skin repair by ER-β activation.
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Affiliation(s)
| | | | | | | | | | - Kevin Kit Parker
- Corresponding author: Kevin Kit Parker, 29 Oxford St. (Rm. 321) Cambridge, MA, 02138, Tel: (617) 495-2850, Fax: (617) 495-9837,
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Santos JAA, da Silva JW, dos Santos SM, Rodrigues MDF, Silva CJA, da Silva MV, Correia MTS, Albuquerque JFC, Melo CML, Silva TG, Martins RD, Aguiar Júnior FCA, Ximenes RM. In Vitro and In Vivo Wound Healing and Anti-Inflammatory Activities of Babassu Oil ( Attalea speciosa Mart. Ex Spreng., Arecaceae). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:8858291. [PMID: 33029179 PMCID: PMC7532363 DOI: 10.1155/2020/8858291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 11/29/2022]
Abstract
Babassu (Attalea speciosa Mart. ex Spreng., Arecaceae) is a palm tree endemic to Brazil and found mainly in the borders of Amazon forest, where the harvesting of its fruits is an important source of income for more than 300,000 people. Among the communities of coconut breakers women, babassu oil is used in culinary, as fuel, and mostly as medicinal oil for the treatment of skin wounds and inflammation. This study aimed to evaluate in vitro and in vivo the wound healing effects of babassu oil. In vitro, babassu oil increased the migration of L929 fibroblasts, inhibited the production of nitric oxide by LPS-stimulated peritoneal macrophages, and increased the levels of INF-γ and IL-6 cytokines production. In vivo, babassu oil accelerated the healing process in a full-thickness splinted wound model, by an increase in the fibroblasts number, blood vessels, and collagen deposition in the wounds. The babassu oil also increased the recruitment of inflammatory cells into the wound site and showed an anti-inflammatory effect in a chronic ear edema model, reducing ear thickness, epidermal hyperplasia, and myeloperoxidase activity. Thus, these data corroborate the use of babassu oil in folk medicine as a remedy to treat skin wounds.
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Affiliation(s)
- José Alex A. Santos
- Departamento de Enfermagem, Instituto Federal de Pernambuco, Abreu e Lima 53.515-120, Brazil
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50.740-525, Brazil
| | | | | | | | - Camila Joyce A. Silva
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50.740-525, Brazil
| | - Márcia Vanusa da Silva
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife 50.670-901, Brazil
| | | | | | - Cristiane M. L. Melo
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50.740-525, Brazil
| | - Teresinha G. Silva
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50.740-525, Brazil
| | - René D. Martins
- Centro Acadêmico de Vitória, Universidade Federal de Pernambuco, Vitória de Santo Antão 55.608-680, Brazil
| | | | - Rafael M. Ximenes
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50.740-525, Brazil
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Scrima M, Melito C, Merola F, Iorio A, Vito N, Giori AM, Ferravante A. Evaluation of Wound Healing Activity of Salvia haenkei Hydroalcoholic Aerial Part Extract on in vitro and in vivo Experimental Models. Clin Cosmet Investig Dermatol 2020; 13:627-637. [PMID: 32922060 PMCID: PMC7457862 DOI: 10.2147/ccid.s224418] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 06/23/2020] [Indexed: 11/24/2022]
Abstract
Purpose The aim of the present study was to evaluate the potential wound healing activity of the hydroalcoholic extract of Salvia haenkei on in vitro and in vivo experimental models. Materials and Methods Preliminary analytical characterization of the hydroalcoholic extract of Salvia haenkei was made by reversed-phase high performance liquid chromatography (RP-HPLC) that permitted identification of a qualitative fingerprint of the extract of aerial parts. The wound healing activity of the hydroalcoholic extract of Salvia haenkei was evaluated in vitro by the scratch assay on human dermal fibroblasts and human epidermal keratinocytes and in vivo by standardized mouse excisional splinting model. Real-time PCR (RT-PCR) experiments were performed to analyze gene expression levels of inflammatory markers. Results The scratch assay tests showed that the treatment with the hydroalcoholic extract of Salvia haenkei did not induce an increase in the fibroblasts migration rate with respect to the positive control. Instead, the hydroalcoholic extract of Salvia haenkei was effective in improving the wound closure rate on keratinocyte cell cultures with an almost total invasion of the scratch after 48 h of treatment; whereas the positive control, at the same time point, showed only a 67% reduction of the wound size. In vivo experiments showed that the groups treated with the extract of Salvia haenkei completely re-epithelized the wound in 2.7 days, a timing that was comparable with the action of the positive control that took only 2.1 days. Gene expression analysis showed that Salvia haenkei positively regulated the signaling pathway of the nuclear factor-κB (NF-κB) transcription factor. Conclusion The results suggested that the hydroalcoholic extract of Salvia haenkei induced a clear wound healing effect.
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Affiliation(s)
- Mario Scrima
- R&D Department, IBSA Farmaceutici Italia, Ariano Irpino, Italy
| | - Carmela Melito
- R&D Department, IBSA Farmaceutici Italia, Ariano Irpino, Italy
| | - Filomena Merola
- R&D Department, IBSA Farmaceutici Italia, Ariano Irpino, Italy
| | - Antonio Iorio
- R&D Department, IBSA Farmaceutici Italia, Ariano Irpino, Italy
| | - Nicoletta Vito
- R&D Department, IBSA Farmaceutici Italia, Ariano Irpino, Italy
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de Assis KMA, da Silva Leite JM, de Melo DF, Borges JC, Santana LMB, Dos Reis MML, Moreira VM, da Rocha WRV, Catão RMR, Dos Santos SG, da Silva Portela A, de Sousa Silva SM, de Oliveira TKB, de Souza da Silveira JW, Pires EG, Nonaka CFW, Sanches FAC, de Lima Damasceno BPG. Bicontinuous microemulsions containing Melaleuca alternifolia essential oil as a therapeutic agent for cutaneous wound healing. Drug Deliv Transl Res 2020; 10:1748-1763. [PMID: 32924099 DOI: 10.1007/s13346-020-00850-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
The Melaleuca alternifolia essential oil (MEO) has been widely used due to its healing and antimicrobial action. Its incorporation into drug delivery systems is a reality, and numerous studies have already been developed for this purpose. In this regard, the aim of this work was to develop, characterize, and evaluate the in vivo pharmacological activity of bicontinuous microemulsions (BME) containing MEO. Through diagram construction, a formulation consisting of Kolliphor® HS 15 (31.05%), Span® 80 (3.45%), isopropyl myristate (34.5%), and distilled water (31%) was selected and MEO was incorporated in the proportion of 3.45% (v/v). Morphological analysis characterization confirms that the system studied herein is a BME. The evaluated formulation showed physicochemical characteristics that allow its topical use. Rheologically, samples were characterized as pseudo-plastic non-Newtonian thixotropic fluids. The chromatographic method developed is in accordance with the current recommendations. The extraction method used assured a 100% recovery of the pharmacological marker (terpinen-4-ol). In vivo studies suggest that BME loaded with MEO may contribute to the healing process of skin wounds. In addition, it demonstrated antibacterial activity for Gram-positive and Gram-negative bacteria. Therefore, the BME system loaded with MEO is promising as a healing and antimicrobial agent for skin wounds.Graphical abstract.
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Affiliation(s)
- Karoll Moangella Andrade de Assis
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Joandra Maísa da Silva Leite
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Demis Ferreira de Melo
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Joyce Cordeiro Borges
- Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Lucas Matheus Barreto Santana
- Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Malu Maria Lucas Dos Reis
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Vandiara Martins Moreira
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Wilma Rainny Vieira da Rocha
- Laboratory of Microbiology, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | - Raïssa Mayer Ramalho Catão
- Laboratory of Microbiology, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | | | | | | | | | - João Walter de Souza da Silveira
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil
| | | | | | - Fátima Aparecida Castriani Sanches
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil.,Federal Institute of Education, Science and Technology Baiano, IFBA, Campus Catu, Catu, Bahia, Brazil
| | - Bolívar Ponciano Goulart de Lima Damasceno
- Graduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraiba, Brazil. .,Laboratory of Development and Characterization of Pharmaceutical Products, Department of Pharmacy, State University of Paraíba (UEPB), Campina Grande, Paraiba, Brazil.
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Ruggeri M, Bianchi E, Rossi S, Vigani B, Bonferoni MC, Caramella C, Sandri G, Ferrari F. Nanotechnology-Based Medical Devices for the Treatment of Chronic Skin Lesions: From Research to the Clinic. Pharmaceutics 2020; 12:pharmaceutics12090815. [PMID: 32867241 PMCID: PMC7559814 DOI: 10.3390/pharmaceutics12090815] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 12/29/2022] Open
Abstract
Chronic wounds, such as pressure ulcers, diabetic ulcers, venous ulcers and arterial insufficiency ulcers, are lesions that fail to proceed through the normal healing process within a period of 12 weeks. The treatment of skin chronic wounds still represents a great challenge. Wound medical devices (MDs) range from conventional and advanced dressings, up to skin grafts, but none of these are generally recognized as a gold standard. Based on recent developments, this paper reviews nanotechnology-based medical devices intended as skin substitutes. In particular, nanofibrous scaffolds are promising platforms for wound healing, especially due to their similarity to the extracellular matrix (ECM) and their capability to promote cell adhesion and proliferation, and to restore skin integrity, when grafted into the wound site. Nanotechnology-based scaffolds are emphasized here. The discussion will be focused on the definition of critical quality attributes (chemical and physical characterization, stability, particle size, surface properties, release of nanoparticles from MDs, sterility and apyrogenicity), the preclinical evaluation (biocompatibility testing, alternative in vitro tests for irritation and sensitization, wound healing test and animal wound models), the clinical evaluation and the CE (European Conformity) marking of nanotechnology-based MDs.
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123
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Han Y, Jiang Y, Li Y, Wang M, Fan T, Liu M, Ke Q, Xu H, Yi Z. An aligned porous electrospun fibrous scaffold with embedded asiatic acid for accelerating diabetic wound healing. J Mater Chem B 2020; 7:6125-6138. [PMID: 31553023 DOI: 10.1039/c9tb01327j] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The diabetic non-healing wound is one of the most common complications of diabetics. The long-term stimulus of oxidative stress, inflammation and infection caused by the hyperglycemic microenvironment in the wound site always leads to a delayed healing process of the diabetic wound. To address this issue, in this study, we prepared an asiatic acid (AA)-embedded aligned porous poly(l-lactic acid) (PLLA) electrospun fibrous scaffold (AA-PL) for accelerating diabetic wound healing. The results showed that the electrospun fibers with nanopores on the surfaces were aligned in a single direction, while the AA was well embedded in the fibers and can be continuously released from them. The in vitro results revealed that the AA-PL scaffolds can effectively alleviate the H2O2-induced oxidative stress damage to HaCat cells and downregulate the LPS-induced pro-inflammatory cytokine (IL-1β, TNF-α, IL6) gene expression in RAW 264.7 macrophage cells. Moreover, the growth of E. coli and S. aureus could be inhibited by the AA-PL scaffolds. The in vivo study further demonstrated that the AA-PL scaffolds can accelerate the re-epithelization, angiogenesis and extracellular matrix formation of a wound by relieving the high oxidative stress, inflammation and infection in the diabetic wound site. This study suggests that the combination of hierarchical structures (nanopores on the aligned fibers) with the controllable release of AA from the scaffolds is an efficient and innovative strategy for the treatment of diabetic non-healing wounds.
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Affiliation(s)
- Yiming Han
- East China Normal University and Shanghai Fengxian District Central Hospital Joint Center for Translational Medicine, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, 200241 Shanghai, China.
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124
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Yang HY, Fierro F, So M, Yoon DJ, Nguyen AV, Gallegos A, Bagood MD, Rojo-Castro T, Alex A, Stewart H, Chigbrow M, Dasu MR, Peavy TR, Soulika AM, Nolta JA, Isseroff RR. Combination product of dermal matrix, human mesenchymal stem cells, and timolol promotes diabetic wound healing in mice. Stem Cells Transl Med 2020; 9:1353-1364. [PMID: 32720751 DOI: 10.1002/sctm.19-0380] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 05/21/2020] [Accepted: 06/10/2020] [Indexed: 12/17/2022] Open
Abstract
Diabetic foot ulcers are a major health care concern with limited effective therapies. Mesenchymal stem cell (MSC)-based therapies are promising treatment options due to their beneficial effects of immunomodulation, angiogenesis, and other paracrine effects. We investigated whether a bioengineered scaffold device containing hypoxia-preconditioned, allogeneic human MSCs combined with the beta-adrenergic antagonist timolol could improve impaired wound healing in diabetic mice. Different iterations were tested to optimize the primary wound outcome, which was percent of wound epithelialization. MSC preconditioned in 1 μM timolol at 1% oxygen (hypoxia) seeded at a density of 2.5 × 105 cells/cm2 on Integra Matrix Wound Scaffold (MSC/T/H/S) applied to wounds and combined with daily topical timolol applications at 2.9 mM resulted in optimal wound epithelialization 65.6% (24.9% ± 13.0% with MSC/T/H/S vs 41.2% ± 20.1%, in control). Systemic absorption of timolol was below the HPLC limit of quantification, suggesting that with the 7-day treatment, accumulative steady-state timolol concentration is minimal. In the early inflammation stage of healing, the MSC/T/H/S treatment increased CCL2 expression, lowered the pro-inflammatory cytokines IL-1B and IL6 levels, decreased neutrophils by 44.8%, and shifted the macrophage ratio of M2/M1 to 1.9 in the wound, demonstrating an anti-inflammatory benefit. Importantly, expression of the endothelial marker CD31 was increased by 2.5-fold with this treatment. Overall, the combination device successfully improved wound healing and reduced the wound inflammatory response in the diabetic mouse model, suggesting that it could be translated to a therapy for patients with diabetic chronic wounds.
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Affiliation(s)
- Hsin-Ya Yang
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Fernando Fierro
- Department of Cell Biology and Human Anatomy, University of California, Davis, Sacramento, California, USA.,Stem Cell Program, Department of Internal Medicine, University of California, Davis, Davis, California, USA
| | - Michelle So
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Daniel J Yoon
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Alan Vu Nguyen
- Department of Dermatology, University of California, Davis, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospital for Children Northern California, Sacramento, California, USA
| | - Anthony Gallegos
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Michelle D Bagood
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Tomas Rojo-Castro
- Department of Biological Sciences, California State University, Sacramento, Sacramento, California, USA
| | - Alan Alex
- Department of Biological Sciences, California State University, Sacramento, Sacramento, California, USA
| | - Heather Stewart
- Stem Cell Program, Department of Internal Medicine, University of California, Davis, Davis, California, USA
| | - Marianne Chigbrow
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Mohan R Dasu
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Thomas R Peavy
- Department of Biological Sciences, California State University, Sacramento, Sacramento, California, USA
| | - Athena M Soulika
- Department of Dermatology, University of California, Davis, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospital for Children Northern California, Sacramento, California, USA
| | - Jan A Nolta
- Stem Cell Program, Department of Internal Medicine, University of California, Davis, Davis, California, USA
| | - R Rivkah Isseroff
- Department of Dermatology, University of California, Davis, Sacramento, California, USA.,Dermatology Section, VA Northern California Health Care System, Mather, California, USA
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125
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Sun Y, Song L, Zhang Y, Wang H, Dong X. Adipose stem cells from type 2 diabetic mice exhibit therapeutic potential in wound healing. Stem Cell Res Ther 2020; 11:298. [PMID: 32680569 PMCID: PMC7368682 DOI: 10.1186/s13287-020-01817-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/04/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
Background Diabetic patients suffer from impaired wound healing. Mesenchymal stem cell (MSC) therapy represents a promising approach toward improving skin wound healing through the release of soluble growth factors and cytokines that stimulate new vessel formation and modulate inflammation. Whether adipose tissue-derived MSCs (ASCs) from type 2 diabetes (T2D) donors are suitable for skin damage repair remains largely unknown. Methods In this study, we compared the phenotype and functionality of ASCs harvested from high-fat diet (HFD) and streptozotocin (STZ)-induced T2D or control mice, and assessed their abilities to promote wound healing in an excisional wound splinting mouse model with T2D. Results T2D ASCs expressed similar cellular markers as control ASCs but secreted less hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF), and transforming growth factor β (TGF-β). T2D ASCs were somewhat less effective in promoting healing of the wound, as manifested by slightly reduced re-epithelialization, cutaneous appendage regeneration, and collagen III deposition in wound tissues. In vitro, T2D ASCs promoted proliferation and migration of skin fibroblasts to a comparable extent as control ASCs via suppression of inflammation and macrophage infiltration. Conclusions From these findings, we conclude that, although ASCs from T2D mice are marginally inferior to control ASCs, they possess comparable therapeutic effects in wound healing.
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Affiliation(s)
- Yongfa Sun
- College of Life Science, Qingdao Agricultural University, No. 700, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China
| | - Lili Song
- College of Life Science, Qingdao Agricultural University, No. 700, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China
| | - Yong Zhang
- College of Life Science, Qingdao Agricultural University, No. 700, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China
| | - Hongjun Wang
- Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Xiao Dong
- College of Life Science, Qingdao Agricultural University, No. 700, Changcheng Road, Chengyang District, Qingdao, 266109, Shandong, People's Republic of China.
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126
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Jo SB, Park CY, Kang HK, Jung SY, Min BM. The laminin-211-derived PPFEGCIWN motif accelerates wound reepithelialization and increases phospho-FAK-Tyr397 and Rac1-GTP levels in a rat excisional wound splinting model. J Tissue Eng Regen Med 2020; 14:1100-1112. [PMID: 32592615 DOI: 10.1002/term.3084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/31/2020] [Accepted: 06/03/2020] [Indexed: 11/11/2022]
Abstract
We previously reported that the PPFEGCIWN motif (Ln2-LG3-P2-DN3), residues 2678-2686 of the human laminin α2 chain, promotes cell attachment of normal human epidermal keratinocytes (NHEKs) and dermal fibroblasts (NHDFs); however, its in vivo effects on cutaneous wound healing have not yet been examined. In this study, we sought to determine whether Ln2-LG3-P2-DN3 could promote full-thickness cutaneous wound healing by accelerating wound reepithelialization and wound closure in vivo. Ln2-LG3-P2-DN3 had significantly higher cell attachment and spreading activities than vehicle or scrambled peptide control in both NHEKs and NHDFs in vitro. The wound area was significantly smaller in rats treated with Ln2-LG3-P2-DN3 than in those treated with vehicle or scrambled peptide in the early phase of wound healing. Furthermore, Ln2-LG3-P2-DN3 significantly accelerated wound reepithelialization relative to vehicle or scrambled peptide and promoted FAK-Tyr397 phosphorylation and Rac1 activation. Collectively, our findings suggest that the PPFEGCIWN motif has potential as a therapeutic agent for cutaneous regeneration via the acceleration of wound reepithelization and wound closure.
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Affiliation(s)
- Seung Bin Jo
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Cho Yeon Park
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Hyun Ki Kang
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Sung Youn Jung
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
| | - Byung-Moo Min
- Department of Oral Biochemistry and Program in Cancer and Developmental Biology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, South Korea
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127
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Novel fibrin-fibronectin matrix accelerates mice skin wound healing. Bioact Mater 2020; 5:949-962. [PMID: 32671290 PMCID: PMC7334397 DOI: 10.1016/j.bioactmat.2020.06.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 01/13/2023] Open
Abstract
Plasma fibrinogen (F1) and fibronectin (pFN) polymerize to form a fibrin clot that is both a hemostatic and provisional matrix for wound healing. About 90% of plasma F1 has a homodimeric pair of γ chains (γγF1), and 10% has a heterodimeric pair of γ and more acidic γ' chains (γγ'F1). We have synthesized a novel fibrin matrix exclusively from a 1:1 (molar ratio) complex of γγ'F1 and pFN in the presence of highly active thrombin and recombinant Factor XIII (rFXIIIa). In this matrix, the fibrin nanofibers were decorated with pFN nanoclusters (termed γγ'F1:pFN fibrin). In contrast, fibrin made from 1:1 mixture of γγF1 and pFN formed a sporadic distribution of "pFN droplets" (termed γγF1+pFN fibrin). The γγ'F1:pFN fibrin enhanced the adhesion of primary human umbilical vein endothelium cells (HUVECs) relative to the γγF1+FN fibrin. Three dimensional (3D) culturing showed that the γγ'F1:pFN complex fibrin matrix enhanced the proliferation of both HUVECs and primary human fibroblasts. HUVECs in the 3D γγ'F1:pFN fibrin exhibited a starkly enhanced vascular morphogenesis while an apoptotic growth profile was observed in the γγF1+pFN fibrin. Relative to γγF1+pFN fibrin, mouse dermal wounds that were sealed by γγ'F1:pFN fibrin exhibited accelerated and enhanced healing. This study suggests that a 3D pFN presentation on a fibrin matrix promotes wound healing.
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128
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Gong L, Wang S, Shen L, Liu C, Shenouda M, Li B, Liu X, Shaw JA, Wineman AL, Yang Y, Xiong D, Eichmann A, Evans SM, Weiss SJ, Si MS. SLIT3 deficiency attenuates pressure overload-induced cardiac fibrosis and remodeling. JCI Insight 2020; 5:136852. [PMID: 32644051 PMCID: PMC7406261 DOI: 10.1172/jci.insight.136852] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/06/2020] [Indexed: 01/28/2023] Open
Abstract
In pulmonary hypertension and certain forms of congenital heart disease, ventricular pressure overload manifests at birth and is an obligate hemodynamic abnormality that stimulates myocardial fibrosis, which leads to ventricular dysfunction and poor clinical outcomes. Thus, an attractive strategy is to attenuate the myocardial fibrosis to help preserve ventricular function. Here, by analyzing RNA-sequencing databases and comparing the transcript and protein levels of fibrillar collagen in WT and global-knockout mice, we found that slit guidance ligand 3 (SLIT3) was present predominantly in fibrillar collagen-producing cells and that SLIT3 deficiency attenuated collagen production in the heart and other nonneuronal tissues. We then performed transverse aortic constriction or pulmonary artery banding to induce left and right ventricular pressure overload, respectively, in WT and knockout mice. We discovered that SLIT3 deficiency abrogated fibrotic and hypertrophic changes and promoted long-term ventricular function and overall survival in both left and right ventricular pressure overload. Furthermore, we found that SLIT3 stimulated fibroblast activity and fibrillar collagen production, which coincided with the transcription and nuclear localization of the mechanotransducer yes-associated protein 1. These results indicate that SLIT3 is important for regulating fibroblast activity and fibrillar collagen synthesis in an autocrine manner, making it a potential therapeutic target for fibrotic diseases, especially myocardial fibrosis and adverse remodeling induced by persistent afterload elevation.
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Affiliation(s)
- Lianghui Gong
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Department of Cardiovascular Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Shuyun Wang
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Li Shen
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Catherine Liu
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Mena Shenouda
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Baolei Li
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Xiaoxiao Liu
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Alan L. Wineman
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Yifeng Yang
- Department of Cardiovascular Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Dingding Xiong
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Anne Eichmann
- Yale Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.,Paris Cardiovascular Research Center, INSERM U970, Paris, France.,Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Sylvia M. Evans
- Skaggs School of Pharmacy and Pharmaceutical Sciences,,Department of Medicine, and,Department of Pharmacology, UCSD, La Jolla, California, USA
| | - Stephen J. Weiss
- Division of Genetic Medicine,,Department of Internal Medicine,,Life Sciences Institute,,Cellular and Molecular Biology Graduate Program, and,Rogel Cancer Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Ming-Sing Si
- Section of Pediatric Cardiovascular Surgery, Department of Cardiac Surgery, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
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129
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Zhang Z, Shao M, Hepler C, Zi Z, Zhao S, An YA, Zhu Y, Ghaben AL, Wang MY, Li N, Onodera T, Joffin N, Crewe C, Zhu Q, Vishvanath L, Kumar A, Xing C, Wang QA, Gautron L, Deng Y, Gordillo R, Kruglikov I, Kusminski CM, Gupta RK, Scherer PE. Dermal adipose tissue has high plasticity and undergoes reversible dedifferentiation in mice. J Clin Invest 2020; 129:5327-5342. [PMID: 31503545 DOI: 10.1172/jci130239] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/29/2019] [Indexed: 12/19/2022] Open
Abstract
Dermal adipose tissue (also known as dermal white adipose tissue and herein referred to as dWAT) has been the focus of much discussion in recent years. However, dWAT remains poorly characterized. The fate of the mature dermal adipocytes and the origin of the rapidly reappearing dermal adipocytes at different stages remain unclear. Here, we isolated dermal adipocytes and characterized dermal fat at the cellular and molecular level. Together with dWAT's dynamic responses to external stimuli, we established that dermal adipocytes are a distinct class of white adipocytes with high plasticity. By combining pulse-chase lineage tracing and single-cell RNA sequencing, we observed that mature dermal adipocytes undergo dedifferentiation and redifferentiation under physiological and pathophysiological conditions. Upon various challenges, the dedifferentiated cells proliferate and redifferentiate into adipocytes. In addition, manipulation of dWAT highlighted an important role for mature dermal adipocytes for hair cycling and wound healing. Altogether, these observations unravel a surprising plasticity of dermal adipocytes and provide an explanation for the dynamic changes in dWAT mass that occur under physiological and pathophysiological conditions, and highlight the important contributions of dWAT toward maintaining skin homeostasis.
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Affiliation(s)
| | | | | | | | | | | | - Yi Zhu
- Touchstone Diabetes Center
| | | | | | - Na Li
- Touchstone Diabetes Center
| | | | | | | | | | | | - Ashwani Kumar
- McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Chao Xing
- McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Qiong A Wang
- Department of Molecular and Cellular Endocrinology, Diabetes and Metabolism Research Institute, City of Hope/Beckman Research Institute, Duarte, California, USA
| | - Laurent Gautron
- Division of Hypothalamic Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | | | | | - Ilja Kruglikov
- Scientific Department, Wellcomet GmbH, Karlsruhe, Germany
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Liu Y, Liu Y, Du Z, Zhang L, Chen J, Shen Z, Liu Q, Qin J, Lv H, Wang H, He L, Liu J, Huang Q, Sun Y, Otto M, Li M. Skin microbiota analysis-inspired development of novel anti-infectives. MICROBIOME 2020; 8:85. [PMID: 32503672 PMCID: PMC7275423 DOI: 10.1186/s40168-020-00866-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 05/13/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND The alarming spread of antimicrobial resistance requires the development of novel anti-infective drugs. Despite the recent research focus on the human microbiome and its likely value to understand and exploit inter-bacterial inhibitory phenomena as a source for antimicrobial strategies, the human microbiota has barely been investigated for the purpose of drug development. RESULTS We performed a large screen analyzing over 3000 human skin isolates to evaluate bacterial competition within the human skin microbiota as a basis for the development of anti-infective therapeutics. We discovered a Staphylococcus hominis strain with strong and broad activity against Gram-positive pathogens that was mediated by the bacteriocin micrococcin P1 (MP1). In "probiotic" approaches, this strain led to reduced Staphylococcus aureus infection and accelerated closure of S. aureus-infected wounds. Furthermore, we used a nanoparticle strategy to overcome the physico-chemical limitations often encountered with natural substances such as MP1 and demonstrate a significant reduction of S. aureus infection by MP1-loaded nanoparticles. CONCLUSIONS Our study gives examples of how analysis of bacterial interactions in the human microbiota can be explored for the development of novel, effective anti-infective strategies. Video Abstract.
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Affiliation(s)
- Yao Liu
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Yuanzhen Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zixiu Du
- School of Pharmacy, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Lidan Zhang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Juan Chen
- School of Pharmacy, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Zhen Shen
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Qian Liu
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Juanxiu Qin
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Huiying Lv
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Hua Wang
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Lei He
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Junlan Liu
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Qian Huang
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China
| | - Yuhui Sun
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China.
| | - Michael Otto
- Pathogen Molecular Genetics Section, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, U.S. National Institutes of Health, Bethesda, MD, 20814, USA.
| | - Min Li
- Department of Laboratory Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China.
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131
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Mulholland EJ. Electrospun Biomaterials in the Treatment and Prevention of Scars in Skin Wound Healing. Front Bioeng Biotechnol 2020; 8:481. [PMID: 32582653 PMCID: PMC7283777 DOI: 10.3389/fbioe.2020.00481] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 04/24/2020] [Indexed: 12/13/2022] Open
Abstract
Electrospinning is a promising method for the rapid and cost-effective production of nanofibers from a wide variety of polymers given the high surface area morphology of these nanofibers, they make excellent wound dressings, and so have significant potential in the prevention and treatment of scars. Wound healing and the resulting scar formation are exceptionally well-characterized on a molecular and cellular level. Despite this, novel effective anti-scarring treatments which exploit this knowledge are still clinically absent. As the process of electrospinning can produce fibers from a variety of polymers, the treatment avenues for scars are vast, with therapeutic potential in choice of polymers, drug incorporation, and cell-seeded scaffolds. It is essential to show the new advances in this field; thus, this review will investigate the molecular processes of wound healing and scar tissue formation, the process of electrospinning, and examine how electrospun biomaterials can be utilized and adapted to wound repair in the hope of reducing scar tissue formation and conferring an enhanced tensile strength of the skin. Future directions of the research will explore potential novel electrospun treatments, such as gene therapies, as targets for enhanced tissue repair applications. With this class of biomaterial gaining such momentum and having such promise, it is necessary to refine our understanding of its process to be able to combine this technology with cutting-edge therapies to relieve the burden scars place on world healthcare systems.
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Affiliation(s)
- Eoghan J. Mulholland
- Gastrointestinal Stem Cell Biology Laboratory, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
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132
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Healing of Full-Thickness Murine Skin Wounds Containing Nanofibers Using Splints for Efficient Reepithelialization and to Avoid Contracture. Methods Mol Biol 2020. [PMID: 32474872 DOI: 10.1007/978-1-0716-0655-1_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
Wound healing process is the outcome of a series of actions and combined with collaborative process involving concerted efforts of multiple cell types. The dynamic series of events constituting each of these overlapping rather than discrete stages of wound healing increases its complexity and the necessity to understand it. The contrasting mechanisms of wound healing employed by mouse (via wound contraction) and humans (via reepithelialization) puts forth the need of a model closely mimicking human wound-healing and hence comes the applicability of the mouse excisional wound splinting model. Use of silicone-based splints has demonstrated their effectiveness in aptly resembling the human reepithelialization mediated wound healing by preventing contraction during healing. The rising popularity of nanofiber-based treatments for wound healing through sustained release of factors/molecules promoting wound closure can be potentially implemented in association with this model to determine its efficacy in wound management in a more humanized way.
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133
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Gámez-Herrera E, García-Salinas S, Salido S, Sancho-Albero M, Andreu V, Pérez M, Luján L, Irusta S, Arruebo M, Mendoza G. Drug-eluting wound dressings having sustained release of antimicrobial compounds. Eur J Pharm Biopharm 2020; 152:327-339. [PMID: 32473289 DOI: 10.1016/j.ejpb.2020.05.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 05/12/2020] [Accepted: 05/25/2020] [Indexed: 01/07/2023]
Abstract
Wound healing is a complex and costly public health problem that should be timely addressed to achieve a rapid and adequate tissue repair avoiding or even eliminating potential pathogenic infection. Chronic infected non-healing wounds represent a serious concern for health care systems. Efficient wound dressings with tailored therapy having the best response and highest safety margin for the management of chronic non-healing wounds are still needed. The use of novel wound dressing materials has emerged as a promising tool to fulfil these requirements. In this work, asymmetric electrospun polycaprolactone (PCL)-based nanofibers (NFs) were decorated with electrosprayed poly(lactic-co-glycolic acid) microparticles (PLGA MPs) containing the natural antibacterial compound thymol (THY) in order to obtain drug eluting antimicrobial dressings having sustained release. The synthesized dressings successfully inhibited the in vitro growth of Staphylococcus aureus ATCC 25923, showing also at the same doses cytocompatibility on human dermal fibroblasts and keratinocyte cultures after treatment for 24 h, which was not observed when using free thymol. An in vivo murine excisional wound splinting model, followed by the experimental infection of the wounds with S. aureus and their treatment with the synthesized dressings, pointed to the reduction of the bacterial load in wounds after 7 days, though the total elimination of the infection was not reached. The findings indicated the relevance of the direct contact between the dressings and the bacteria, highlighting the need to tune their design considering the wound surface and the nature of the antimicrobial cargo contained.
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Affiliation(s)
- Enrique Gámez-Herrera
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain
| | - Sara García-Salinas
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Sofía Salido
- Department of Inorganic and Organic Chemistry, Faculty of Experimental Sciences, University of Jaén, Agrifood Campus of International Excellence (ceiA3), 23071 Jaén, Spain
| | - María Sancho-Albero
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Vanesa Andreu
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Marta Pérez
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza & AgriFood Institute of Aragon (IA2), C/ Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Lluís Luján
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza & AgriFood Institute of Aragon (IA2), C/ Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Silvia Irusta
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain.
| | - Manuel Arruebo
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain.
| | - Gracia Mendoza
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
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Zafari M, Mansouri M, Omidghaemi S, Yazdani A, Pourmotabed S, Hasanpour Dehkordi A, Nosrati H, Validi M, Sharifi E. Physical and biological properties of blend-electrospun polycaprolactone/chitosan-based wound dressings loaded with N-decyl-N, N-dimethyl-1-decanaminium chloride: An in vitro and in vivo study. J Biomed Mater Res B Appl Biomater 2020; 108:3084-3098. [PMID: 32459395 DOI: 10.1002/jbm.b.34636] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/16/2020] [Accepted: 04/29/2020] [Indexed: 01/05/2023]
Abstract
Dual-pump electrospinning of antibacterial N-decyl-N, N-dimethyl-1-decanaminium-chloride (DDAC)-loaded polycaprolactone (PCL) nanofibers, and chitosan (CS)/polyethylene-oxide (PEO)-based wound dressings with hydrophilic and hydrophobic properties to eliminate and absorb pathogenic bacteria from wound surface besides antibacterial action and to support wound healing and accelerate its process. Physicochemical properties of the prepared nanofibrous mat as well as antibacterial, cytotoxicity, and cell compatibility were studied. The full-thickness excisional wound healing properties up to 3 weeks using hematoxylin and eosin and Masson-trichrome staining were investigated. Addition of DDAC to CS/PEO-PCL mats decreased the diameter of the nanofibers, which is a crucial property for wound healing as large surface area per volume ratio of nanofibers, in addition to proper cell adhesion, increases loading of DDAC in mats and leads to increased cell viability and eliminating Gram-positive bacteria at in vitro studies. In vivo studies showed DDAC-loaded CS/PEO-PCL mats increased epithelialization and angiogenesis and decreased the inflammation according to histological results. We demonstrated that hydrophobic PCL/DDAC mats, besides antibacterial properties of DDAC, absorbed and eliminated the hydrophobic pathological microorganisms, whereas the hydrophilic nanofibers consisted of CS/PEO, increased the cell adhesion and proliferation due to positive charge of CS. Finally, we were able to increase the wound healing quality by using multifunctional wound dressing. CS/PEO-PCL containing 8 wt % of DDAC nanofibrous mats is promising as a wound dressing for wound management due to the favorable interactions between the pathogenic bacteria and PCL/CS-based wound dressing.
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Affiliation(s)
- Mahdi Zafari
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran.,Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Milad Mansouri
- Cellular and Molecular Research Center, Basic Health Science Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Shadi Omidghaemi
- Cellular and Molecular Research Center, Basic Health Science Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Amid Yazdani
- School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Samiramis Pourmotabed
- Department of Emergency Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ali Hasanpour Dehkordi
- Social Determinants of Health Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hamed Nosrati
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Majid Validi
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Esmaeel Sharifi
- Department of Tissue Engineering and Biomaterials, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran
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135
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Han JH, Han S, Jeong IS, Cheon SH, Kim SW. Minicircle-based GCP-2 ex vivo gene therapy enhanced the reepithelialization and angiogenic capacity. J Tissue Eng Regen Med 2020; 14:829-839. [PMID: 32336047 DOI: 10.1002/term.3049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 04/06/2020] [Accepted: 04/15/2020] [Indexed: 12/18/2022]
Abstract
Recently, minicircle (MC)-based cell therapy has been emerging as a novel technology for nonviral genetic modification. In this study, we investigated the characteristics of granulocyte chemotactic protein-2 (GCP-2)-overexpressing fibroblasts (GCP-2/MC) using MC microporation technology, as well as its therapeutic mechanism in wound healing. GCP-2 parent plasmid and MC containing GCP-2 were generated. Human dermal fibroblasts (HDF) were transfected with MC containing GCP-2. Quantitative reverse transcription polymerase chain reaction (qRT-PCR), scratch wound assay, and in vivo wound healing assay were performed. Gene and protein expression analysis revealed that GCP-2/MC highly expressed epithelialization growth factor, epidermal growth factor (EGF), chemokines, GCP-2, interleukin (IL)-8, as well as wound healing-associated genes such as insulin growth factor (IGF)-1 and hepatocyte growth factor (HGF). An in vitro scratch wound closure and matrigel tube formation assays demonstrated that the culture medium derived from GCP-2/MC substantially accelerated the wound closure and matrigel network formation. Wounds in nude mice were created by skin excisions followed by injections of GCP-2/MC. Results showed high cell survival potential and that GCP-2/MC transplantation highly accelerated skin wound closure by increasing reepithelialization, capillary density, and enhancing angiogenic factors, suggesting direct benefits for cutaneous closure. Taken together, these data suggest that MC-based GCP-2 overexpression could be a promising alternative strategy for promoting wound healing.
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Affiliation(s)
- Ju Hye Han
- Institute for Bio-Medical Convergence, Department of Medicine, Catholic Kwandong University College of Medicine, Gangneung, Republic of Korea
| | - Seongho Han
- Department of Family Medicine, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - In Sil Jeong
- Institute for Bio-Medical Convergence, Department of Medicine, Catholic Kwandong University College of Medicine, Gangneung, Republic of Korea
| | - Sae Hee Cheon
- Department of Dental Hygiene, Masan University, Masan, South Korea
| | - Sung-Whan Kim
- Institute for Bio-Medical Convergence, Department of Medicine, Catholic Kwandong University College of Medicine, Gangneung, Republic of Korea
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136
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Mesenchymal stem cell therapy of acute thermal burns: A systematic review of the effect on inflammation and wound healing. Burns 2020; 47:270-294. [PMID: 33218945 DOI: 10.1016/j.burns.2020.04.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/25/2020] [Accepted: 04/07/2020] [Indexed: 12/12/2022]
Abstract
AIM Mesenchymal stem cell (MSC) therapies are emerging as a promising strategy to promote tissue repair, and may extend their utility to burn care. This comprehensive review of the extant literature, evaluated all in vivo studies, to elucidate the potential protective and therapeutic effect of MSCs in acute thermal skin burns. METHODS PubMed was systematically searched, according to PRISMA guidelines, and all relevant preclinical and clinical studies were included according to pre-specified eligibility criteria. RESULTS Forty-two studies were included in a qualitative synthesis, of which three were human and 39 were animal studies. The preclinical studies showed that MSCs can significantly reduce inflammation, burn wound progression and accelerate healing rate of acute burns. The underlying mechanisms are complex and not fully understood but paracrine modulators, such as immunomodulatory, antioxidative and trophic factors, seem to play important roles. Allogeneic MSC therapy has proved feasible in humans, and could allow for prompt treatment of acute burns in a clinical setting. CONCLUSION MSC therapy show positive results, regarding improved burn wound healing and immunologic response. However, most findings are based on small animal studies. Randomized clinical trials are warranted to investigate the regenerative effects in human burns before translating the findings into clinical practice.
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137
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Póvoa VCO, Dos Santos GJVP, Picheth GF, Jara CP, da Silva LCE, de Araújo EP, de Oliveira MG. Wound healing action of nitric oxide-releasing self-expandable collagen sponge. J Tissue Eng Regen Med 2020; 14:807-818. [PMID: 32330363 DOI: 10.1002/term.3046] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/16/2020] [Accepted: 04/21/2020] [Indexed: 12/16/2022]
Abstract
Mounting evidence showing that local nitric oxide (NO) delivery may significantly improve the wound healing process has stimulated the development of wound dressings capable of releasing NO topically. Herein, we describe the preparation of a self-expandable NO-releasing hydrolyzed collagen sponge (CS), charged with the endogenously found NO donor, S-nitrosoglutathione (GSNO). We show that cold pressed and GSNO-charged CS (CS/GSNO) undergo self-expansion to its original 3D shape upon water absorption to a swelling degree of 2,300 wt%, triggering the release of free NO. Topical application of compressed CS/GSNO on wounds in an animal model showed that exudate absorption by CS/GSNO leads to the release of higher NO doses during the inflammatory phase and progressively lower NO doses at later stages of the healing process. Moreover, treated animals showed significant increase in the mRNA expression levels of monocyte chemoattractant protein-1 (MCP-1), murine macrophage marker (F4/80), transforming growth factor beta (TGF-β), stromal cell-derived factor 1 (SDF-1), insulin-like growth factor-1 (IGF-1), nitric oxide synthase(iNOS), and matrix metalloproteinase(MMP-9). Cluster differentiation 31 (CD31), vascular endothelial growth factor (VEGF), and F4/80 were measured on Days 7 and 12 by immunohistochemistry in the cicatricial tissue. These results indicate that the topical delivery of NO enhances the migration and infiltration of leucocytes, macrophages, and keratinocytes to the wounded tissue, as well as the neovascularization and collagen deposition, which are correlated with an accelerated wound closure. Thus, self-expandable CS/GSNO may represent a novel biocompatible and active wound dress for the topical delivery of NO on wounds.
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Affiliation(s)
| | | | | | - Carlos P Jara
- Nursing School, University of Campinas, UNICAMP, Campinas, Brazil
| | - Laura C E da Silva
- Institute of Chemistry, University of Campinas, UNICAMP, Campinas, Brazil
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138
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Chen S, Wang H, Su Y, John JV, McCarthy A, Wong SL, Xie J. Mesenchymal stem cell-laden, personalized 3D scaffolds with controlled structure and fiber alignment promote diabetic wound healing. Acta Biomater 2020; 108:153-167. [PMID: 32268240 PMCID: PMC7207021 DOI: 10.1016/j.actbio.2020.03.035] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 12/21/2022]
Abstract
The management of diabetic wounds remains a major therapeutic challenge in clinics. Herein, we report a personalized treatment using 3D scaffolds consisting of radially or vertically aligned nanofibers in combination with bone marrow mesenchymal stem cells (BMSCs). The 3D scaffolds have customizable sizes, depths, and shapes, enabling them to fit a variety of type 2 diabetic wounds. In addition, the 3D scaffolds are shape-recoverable in atmosphere and water following compression. The BMSCs-laden 3D scaffolds are capable of enhancing the formation of granulation tissue, promoting angiogenesis, and facilitating collagen deposition. Further, such scaffolds inhibit the formation of M1-type macrophages and the expression of pro-inflammatory cytokines IL-6 and TNF-α and promote the formation of M2-type macrophages and the expression of anti-inflammatory cytokines IL-4 and IL-10. Taken together, BMSCs-laden, 3D nanofiber scaffolds with controlled structure and alignment hold great promise for the treatment of diabetic wounds. STATEMENT OF SIGNIFICANCE: In this study, we developed 3D radially and vertically aligned nanofiber scaffolds to transplant bone marrow mesenchymal stem cells (BMSCs). We personalized 3D scaffolds that could completely match the size, depth, and shape of diabetic wounds. Moreover, both the radially and vertically aligned nanofiber scaffolds could completely recover their shape and maintain structural integrity after repeated loads with compressive stresses. Furthermore, the BMSCs-laden 3D scaffolds are able to promote granulation tissue formation, angiogenesis, and collagen deposition, and switch the immune responses to the pro-regenerative direction. These 3D scaffolds consisting of radially or vertically aligned nanofibers in combination with BMSCs offer a robust, customizable platform potentially for a significant improvement of managing diabetic wounds.
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Affiliation(s)
- Shixuan Chen
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Hongjun Wang
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Yajuan Su
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Johnson V John
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Alec McCarthy
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Shannon L Wong
- Department of Surgery-Plastic Surgery, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE 68198, United States.
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139
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García-Salinas S, Gámez E, Asín J, de Miguel R, Andreu V, Sancho-Albero M, Mendoza G, Irusta S, Arruebo M. Efficiency of Antimicrobial Electrospun Thymol-Loaded Polycaprolactone Mats In Vivo. ACS APPLIED BIO MATERIALS 2020; 3:3430-3439. [DOI: 10.1021/acsabm.0c00419] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sara García-Salinas
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor
S/N, 50018 Zaragoza, Spain
| | - Enrique Gámez
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor
S/N, 50018 Zaragoza, Spain
| | - Javier Asín
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, C/ Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Ricardo de Miguel
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, C/ Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Vanesa Andreu
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor
S/N, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - María Sancho-Albero
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor
S/N, 50018 Zaragoza, Spain
| | - Gracia Mendoza
- Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Silvia Irusta
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor
S/N, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Manuel Arruebo
- Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor
S/N, 50018 Zaragoza, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
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140
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Gao D, Wang Z, Wu Z, Guo M, Wang Y, Gao Z, Zhang P, Ito Y. 3D-printing of solvent exchange deposition modeling (SEDM) for a bilayered flexible skin substitute of poly (lactide-co-glycolide) with bioorthogonally engineered EGF. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 112:110942. [PMID: 32409088 DOI: 10.1016/j.msec.2020.110942] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/06/2020] [Accepted: 04/07/2020] [Indexed: 12/12/2022]
Abstract
Biodegradable polyesters have been widely used as rigid biomedical apparatus because of high mechanical properties but few flexible implants. Herein, we report a flexible poly(lactide-co-glycolide) (PLGA) scaffold using a rapid in situ formation system based on phase separation by solvent exchange deposition modeling (SEDM), which was different from traditional 3D printing of fused deposition modeling (FDM). The FDM printed product was rigidity, its Young's modulus was approximate 2.6 times higher than that of SEDM printed sample. In addition, the thickness of the solidified ink would not shrink during the SEDM printing process, its surface had nano-/micro pores in favor of protein immobilization and cell adhesion. Then a flexible bilayered scaffold with nano-/microstructure was constructed combing SEDM with electrospinning technology for skin substitute, wherein the SEDM printed sample acted as a sub-layer for cell and tissue ingrowth, the densely packed electrospun nanofibers served as an upper-layer improving the sub-layer's tensile strength by 57.07% and preventing from bacteria as physical barrier. Ultimately, the bilayered scaffold immobilized epidermal growth factor (EGF) by a bioorthogonal approach was successfully applied to facilitate full-thickness wound healing of rats.
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Affiliation(s)
- Daqian Gao
- The Ministry of Education Key Laboratory of Bio-based Material Science & Technology, College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China
| | - Zongliang Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Zhenxu Wu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Min Guo
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Yu Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Zhenhua Gao
- The Ministry of Education Key Laboratory of Bio-based Material Science & Technology, College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, PR China.
| | - Peibiao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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141
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Chen Y, Fan Z, Wang X, Mo M, Zeng SB, Xu RH, Wang X, Wu Y. PI3K/Akt signaling pathway is essential for de novo hair follicle regeneration. Stem Cell Res Ther 2020; 11:144. [PMID: 32245516 PMCID: PMC7118821 DOI: 10.1186/s13287-020-01650-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/21/2020] [Accepted: 03/11/2020] [Indexed: 12/21/2022] Open
Abstract
Background Cultured epidermal stem cells (Epi-SCs) and skin-derived precursors (SKPs) were capable of reconstituting functional hair follicles after implantation, while the signaling pathways that regulate neogenic hair follicle formation are poorly investigated. In this study, we aimed to understand the interactions between Epi-SCs and SKPs during skin organoid formation and to uncover key signal pathways crucial for de novo hair follicle regeneration. Methods To track their fate after transplantation, Epi-SCs derived from neonatal C57BL/6 mice were labeled with tdTomato, and SKPs were isolated from neonatal C57BL/6/GFP mice. A mixture of Epi-SCs-tdTomato and SKPs-EGFP in Matrigel was observed under two-photon microscope in culture and after implantation into excisional wounds in nude mice, to observe dynamic migrations of the cells during hair follicle morphogenesis. Signaling communications between the two cell populations were examined by RNA-Seq analysis. Potential signaling pathways revealed by the analysis were validated by targeting the pathways using specific inhibitors to observe a functional loss in de novo hair follicle formation. Results Two-photon microscopy analysis indicated that when Epi-SCs and SKPs were mixed in Matrigel and cultured, they underwent dynamic migrations resulting in the formation of a bilayer skin-like structure (skin organoid), where Epi-SCs positioned themselves in the outer layer; when the mixture of Epi-SCs and SKPs was grafted into excisional wounds in nude mice, a bilayer structure resembling the epidermis and the dermis formed at the 5th day, and de novo hair follicles generated subsequently. RNA-Seq analysis of the two cell types after incubation in mixture revealed dramatic alterations in gene transcriptome, where PI3K-Akt signaling pathway in Epi-SCs was significantly upregulated; meanwhile, elevated expressions of several growth factors and cytokine potentially activating PI3K were found in SKPs, suggesting active reciprocal communications between them. In addition, inhibition of PI3K or Akt by specific inhibitors markedly suppressed the hair follicle regeneration mediated by Epi-SCs and SKPs. Conclusions Our data indicate that the PI3K-Akt signaling pathway plays a crucial role in de novo hair follicle regeneration, and the finding may suggest potential therapeutic applications in enhancing hair regeneration.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Zhimeng Fan
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Xiaoxiao Wang
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Miaohua Mo
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China.,Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, China
| | - Shu Bin Zeng
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China.,Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, China
| | - Ren-He Xu
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Xusheng Wang
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China. .,School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou, China.
| | - Yaojiong Wu
- State Key Laboratory of Chemical Oncogenomics, and Shenzhen Key Laboratory of Health Sciences and Technology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China. .,Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, China.
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142
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An excellent nanofibrous matrix based on gum tragacanth-poly (Ɛ-caprolactone)-poly (vinyl alcohol) for application in diabetic wound healing. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109105] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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143
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de Oliveira Rodrigues R, Yaochite JNU, Sasahara GL, Albuquerque AA, da Cruz Fonseca SG, de Vasconcelos Araújo TD, Santiago GMP, de Sousa LM, de Carvalho JL, Alves APNN, de Carvalho PG, Nagao-Dias AT. Antioxidant, anti-inflammatory and healing potential of ethyl acetate fraction of Bauhinia ungulata L. (Fabaceae) on in vitro and in vivo wound model. Mol Biol Rep 2020; 47:2845-2859. [PMID: 32239466 DOI: 10.1007/s11033-020-05332-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 02/18/2020] [Indexed: 11/26/2022]
Abstract
The present work aimed to investigate the antioxidant, anti-inflammatory and wound healing potential of ethyl acetate fraction from Bauhinia ungulata L. (FABU) on in vitro and in vivo models. Wound healing assay using human lung adenocarcinoma A549 cell line was employed to evaluate the ability of FABU in modulating cell migration. In addition, a surgical wound model in C57BL/6 mice was used to study the healing potential of FABU incorporated into gel carbomer 940 (Carbopol®). Evaluation of lipid peroxidation, inflammatory and anti-inflammatory mediator gene expression, rate of wound closure, and histological analysis were done. FABU significantly reduced the gap area in in vitro wound healing assay, 24 h after treatment. In the animal model, FABU at 0.5% topically applied once-daily for 5 days to the surgical wounds significantly reduced the lesion area. Moreover, it significantly decreased the levels of lipid peroxidation in the lesions and decreased the relative gene expression levels of IL-1β and TNF-α in the injured region. In conclusion, our study suggests that Bauhinia ungulata can effectively promote the wound healing, probably by regulating the inflammatory environment during the early stages of the process.
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Affiliation(s)
- Raphael de Oliveira Rodrigues
- Laboratory of Immunology, Department of Clinical Analysis and Toxicology, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitão Francisco Pedro 1210, Fortaleza, CE, CEP 60430-370, Brazil.
| | - Juliana Navarro Ueda Yaochite
- Laboratory of Immunology, Department of Clinical Analysis and Toxicology, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitão Francisco Pedro 1210, Fortaleza, CE, CEP 60430-370, Brazil
| | - Greyce Luri Sasahara
- Laboratory of Immunology, Department of Clinical Analysis and Toxicology, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitão Francisco Pedro 1210, Fortaleza, CE, CEP 60430-370, Brazil
| | - Andressa Almeida Albuquerque
- Laboratory of Immunology, Department of Clinical Analysis and Toxicology, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitão Francisco Pedro 1210, Fortaleza, CE, CEP 60430-370, Brazil
| | - Said Gonçalves da Cruz Fonseca
- Department of Pharmacy, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitao Francisco Pedro 1210, Fortaleza, CE, 60430-370, Brazil
| | - Thiago Dias de Vasconcelos Araújo
- Department of Pharmacy, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitao Francisco Pedro 1210, Fortaleza, CE, 60430-370, Brazil
| | - Gilvandete Maria Pinheiro Santiago
- Department of Pharmacy, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitao Francisco Pedro 1210, Fortaleza, CE, 60430-370, Brazil
| | - Leôncio Mesquita de Sousa
- Department of Organic and Inorganic Chemistry, Sciences Center, Universidade Federal do Ceará (UFC), Campus do Pici 12.200, Fortaleza, CE, 60021-940, Brazil
| | - Jarbas Lima de Carvalho
- Department of Organic and Inorganic Chemistry, Sciences Center, Universidade Federal do Ceará (UFC), Campus do Pici 12.200, Fortaleza, CE, 60021-940, Brazil
| | - Ana Paula Negreiros Nunes Alves
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Paulo Germano de Carvalho
- Center for Health Sciences, Universidade de Fortaleza (UNIFOR), Av. Washington Soares 1321, Fortaleza, CE, 60811-905, Brazil
| | - Aparecida Tiemi Nagao-Dias
- Laboratory of Immunology, Department of Clinical Analysis and Toxicology, Faculty of Pharmacy, Universidade Federal do Ceará (UFC), Rua Capitão Francisco Pedro 1210, Fortaleza, CE, CEP 60430-370, Brazil
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144
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Clohessy RM, Cohen DJ, Stumbraite K, Boyan BD, Schwartz Z. In vivo evaluation of an electrospun and 3D printed cellular delivery device for dermal wound healing. J Biomed Mater Res B Appl Biomater 2020; 108:2560-2570. [PMID: 32086992 DOI: 10.1002/jbm.b.34587] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 01/21/2020] [Accepted: 02/02/2020] [Indexed: 11/10/2022]
Abstract
Burns and chronic wounds are especially challenging wounds to heal. In efforts to heal these wounds, physicians often use autologous skin grafts to help restore mechanical and barrier functionality to the wound area. These grafts are, by nature, limited in availability. In an effort to provide an alternative, we have developed an electrospun wound dressing designed to incorporate into the wound with the option to deliver a cellular payload. Here, a blend of poly(glycolic acid) and poly(ethylene glycol) was electrospun as part of a custom fabrication method that incorporated 3D printed poly(vinyl alcohol) sacrificial elements. This preparation is unique compared to traditional electrospinning as sacrificial elements provide an internal void space for an injectable payload to be delivered to the wound site. When the construct was tested in vivo (full thickness excisional skin wounds), wound closure was slightly delayed by the presence of the scaffold in both normal and challenged wounds. Quality of healing was improved in normal wounds as measured by histomorphometrics when treated with the construct and exhibited increased neovascularization. Our results demonstrate that the extracellular matrix-like scaffold developed in this study is beneficial to healing of full thickness skin defects and may benefit challenged wounds.
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Affiliation(s)
- Ryan M Clohessy
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - David J Cohen
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - Karolina Stumbraite
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia
| | - Barbara D Boyan
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Zvi Schwartz
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia.,Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas
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145
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Zhong H, Ren Z, Wang X, Miao K, Ni W, Meng Y, Lu L, Wang C, Liu W, Deng CX, Xu RH, Chen G. Stagewise keratinocyte differentiation from human embryonic stem cells by defined signal transduction modulators. Int J Biol Sci 2020; 16:1450-1462. [PMID: 32210732 PMCID: PMC7085224 DOI: 10.7150/ijbs.44414] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 02/02/2020] [Indexed: 01/02/2023] Open
Abstract
Keratinocyte is the predominant cell type in the epidermis of skin, and it provides the protective barrier function for the body. Various signaling pathways have been implicated in keratinocyte differentiation in animal models; However, their temporal regulation and interactions are still to be explored in pluripotent stem cell models. In this report, we use human embryonic stem cells to demonstrate that epidermal ectoderm and subsequent keratinocyte cell fate can be determined step by step under the regulation of defined factors. The inhibition of TGFβ initiates ectodermal lineage differentiation, and the activation of BMP pathway drives epidermal TP63 expression. Meanwhile, the timely activation of WNT pathway suppresses extraembryonic lineage, and promotes epidermal cell fate. With further specification by NOTCH inhibition, more than 90% of cells become TP63-positive stage Ⅱ keratinocytes. Finally, stage Ⅲ keratinocytes are produced under defined hypo-calcium keratinocyte culture conditions, and are further matured in mouse xenograft model. This study not only establishes an in vitro platform to study keratinocyte cell fate determination, but also provides an efficient protocol to produce keratinocytes for disease models and clinical applications.
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Affiliation(s)
- Hui Zhong
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Zhili Ren
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Xiaoyan Wang
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Kai Miao
- Cancer Centre, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Wenjun Ni
- Department of Urology Surgery, Zhuhai People's Hospital, Jinan University, Zhuhai, Guangdong 519000, China
| | - Ya Meng
- Zhuhai Precision Medical Center, Zhuhai People's Hospital, Jinan University, Zhuhai, Guangdong 519000, China
| | - Ligong Lu
- Zhuhai Precision Medical Center, Zhuhai People's Hospital, Jinan University, Zhuhai, Guangdong 519000, China.,Center of Interventional radiology, Zhuhai People's Hospital, Jinan University, Zhuhai, Guangdong 519000, China
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau
| | - Weiwei Liu
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau.,Bioimaging and Stem Cell Core Facility, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Chu-Xia Deng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Ren-He Xu
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Guokai Chen
- Centre of Reproduction, Development and Aging, Faculty of Health Sciences, University of Macau, Taipa, Macau.,Bioimaging and Stem Cell Core Facility, Faculty of Health Sciences, University of Macau, Taipa, Macau
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146
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Mesenchymal stromal cell derived CCL2 is required for accelerated wound healing. Sci Rep 2020; 10:2642. [PMID: 32060374 PMCID: PMC7021763 DOI: 10.1038/s41598-020-59174-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 08/07/2019] [Indexed: 01/12/2023] Open
Abstract
Mesenchymal stromal cells (MSC) have immunomodulatory effects impacting macrophages, promoting polarisation towards a reparative phenotype. CCL2 is a potent cytokine involved in the recruitment of macrophages. We hypothesised that MSC derived CCL2 may be involved in the MSC therapeutic effect by facilitating macrophage repolarisation. To further delineate this mechanism, MSC isolated from CCL2 deficient mice (MSC-KO) were applied to excisional wounds in wild-type (WT) mice. CCL2 deficiency in MSC completely abrogated the therapeutic response compared to MSC-WT. MSC-KO were unable to repolarise macrophages to the same extent as WT and this was accompanied by a reduced angiogenesis and re-epithelialisation of the wounds at day 10. This study demonstrates that MSC derived CCL2 is required for MSC induced accelerated wound healing. The role of CCL2 in the interaction between MSC and Macrophages has not been previously demonstrated in accelerated wound healing. CCL2 has a potent effect on the ability to reduce the inflammatory response through local recruitment of macrophages. This research highlights CCL2 as a possible target for augmentation of MSC therapy to enhance therapeutic potential.
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147
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Wang SY, Kim H, Kwak G, Jo SD, Cho D, Yang Y, Kwon IC, Jeong JH, Kim SH. Development of microRNA-21 mimic nanocarriers for the treatment of cutaneous wounds. Theranostics 2020; 10:3240-3253. [PMID: 32194865 PMCID: PMC7053209 DOI: 10.7150/thno.39870] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 12/18/2019] [Indexed: 12/13/2022] Open
Abstract
Rationale: Of the regulatory microRNAs expressed in the wounded skin, microRNA-21 (miR21) plays a pivotal role in wound repair by stimulating re-epithelialization, an essential feature to facilitate healing and reduce scar formation. Despite their crucial roles in wound healing, synthetic exogenous microRNAs have limited applications owing to the lack of an appropriate delivery system. Herein, we designed an miR21 mimic nanocarrier system using facial amphipathic bile acid-conjugated polyethyleneimines (BA-PEI) for the intracellular and transdermal delivery of synthetic miR21 molecules to accelerate wound repair. Methods: To design miR21 mimic nanocarriers, BA-conjugated PEIs prepared from three different types of BA at molar feed ratios of 1 and 3 were synthesized. The intracellular uptake efficiency of synthetic miR21 mimics was studied using confocal laser scanning microscopy and flow cytometry analysis. The optimized miR21/BA nanocarrier system was used to evaluate the wound healing effects induced by miR21 mimics in human HaCaT keratinocytes in vitro and a murine excisional acute wound model in vivo. Results: The cell uptake efficiency of miR21 complexed with BA-conjugated PEI was dramatically higher than that of miR21 complexed with PEI alone. Deoxycholic acid (DA)-modified PEI at a molar feed ratio of 3:1 (DA3-PEI) showed the highest transfection efficiency for miR21 without any increase in toxicity. After effective transdermal and intracellular delivery of miR21/DA3 nanocarriers, miR21 mimics promoted cell migration and proliferation through the post-transcriptional regulation of programmed cell death protein 4 (PDCD4) and matrix metalloproteinases. Thus, miR21 mimic nanocarriers improved both the rate and quality of wound healing, as evident from enhanced collagen synthesis and accelerated wound re-epithelialization. Conclusion: Our miRNA nanocarrier systems developed using DA3-PEI conjugates may be potentially useful for the delivery of synthetic exogenous miRNAs in various fields.
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148
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Masson‐Meyers DS, Andrade TAM, Caetano GF, Guimaraes FR, Leite MN, Leite SN, Frade MAC. Experimental models and methods for cutaneous wound healing assessment. Int J Exp Pathol 2020; 101:21-37. [PMID: 32227524 PMCID: PMC7306904 DOI: 10.1111/iep.12346] [Citation(s) in RCA: 172] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 01/20/2020] [Accepted: 02/06/2020] [Indexed: 12/15/2022] Open
Abstract
Wound healing studies are intricate, mainly because of the multifaceted nature of the wound environment and the complexity of the healing process, which integrates a variety of cells and repair phases, including inflammation, proliferation, reepithelialization and remodelling. There are a variety of possible preclinical models, such as in mice, rabbits and pigs, which can be used to mimic acute or impaired for example, diabetic and nutrition-related wounds. These can be induced by many different techniques, with excision or incision being the most common. After determining a suitable model for a study, investigators need to select appropriate and reproducible methods that will allow the monitoring of the wound progression over time. The assessment can be performed by non-invasive protocols such as wound tracing, photographic documentation (including image analysis), biophysical techniques and/or by invasive protocols that will require wound biopsies. In this article, we provide an overview of some of the most often needed and used: (a) preclinical/animal models including incisional, excisional, burn and impaired wounds; (b) methods to evaluate the healing progression such as wound healing rate, wound analysis by image, biophysical assessment, histopathological, immunological and biochemical assays. The aim is to help researchers during the design and execution of their wound healing studies.
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Affiliation(s)
- Daniela S. Masson‐Meyers
- Marquette University School of DentistryMilwaukeeWisconsinUSA
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
| | - Thiago A. M. Andrade
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
- Graduate Program of Biomedical SciencesUniversity Center of Herminio Ometto Foundation (FHO)ArarasSao PauloBrazil
| | - Guilherme F. Caetano
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
- Graduate Program of Biomedical SciencesUniversity Center of Herminio Ometto Foundation (FHO)ArarasSao PauloBrazil
| | - Francielle R. Guimaraes
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
- University Center of Associated Schools of Education (UNIFAE)São João da Boa VistaSão PauloBrazil
| | - Marcel N. Leite
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
| | - Saulo N. Leite
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
- University Center of the Educational Foundation Guaxupe (UNIFEG)GuaxupeMinas GeraisBrazil
| | - Marco Andrey C. Frade
- Division of DermatologyDepartment of Internal MedicineRibeirao Preto Medical SchoolUniversity of Sao PauloRibeirao PretoSao PauloBrazil
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149
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Liu C, Zhu J, Hai B, Zhang W, Wang H, Leng H, Xu Y, Song C. Single Intraosseous Injection of Simvastatin Promotes Endothelial Progenitor Cell Mobilization, Neovascularization, and Wound Healing in Diabetic Rats. Plast Reconstr Surg 2020; 145:433-443. [DOI: 10.1097/prs.0000000000006502] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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150
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Kalantari K, Mostafavi E, Afifi AM, Izadiyan Z, Jahangirian H, Rafiee-Moghaddam R, Webster TJ. Wound dressings functionalized with silver nanoparticles: promises and pitfalls. NANOSCALE 2020; 12:2268-2291. [PMID: 31942896 DOI: 10.1039/c9nr08234d] [Citation(s) in RCA: 167] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Infections are the main reason why most people die from burns and diabetic wounds. The clinical challenge for treating wound infections through traditional antibiotics has been growing steadily and has now reached a critical status requiring a paradigm shift for improved chronic wound care. The US Centers for Disease Control have predicted more deaths from antimicrobial-resistant bacteria than from all types of cancers combined by 2050. Thus, the development of new wound dressing materials that do not rely on antibiotics is of paramount importance. Currently, incorporating nanoparticles into scaffolds represents a new concept of 'nanoparticle dressing' which has gained considerable attention for wound healing. Silver nanoparticles (Ag-NPs) have been categorized as metal-based nanoparticles and are intriguing materials for wound healing because of their excellent antimicrobial properties. Ag-NPs embedded in wound dressing polymers promote wound healing and control microorganism growth. However, there have been several recent disadvantages of using Ag-NPs to fight infections, such as bacterial resistance. This review highlights the therapeutic approaches of using wound dressings functionalized with Ag-NPs and their potential role in revolutionizing wound healing. Moreover, the physiology of the skin and wounds is discussed to place the use of Ag-NPs in wound care into perspective.
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Affiliation(s)
- Katayoon Kalantari
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA. and Centre of Advanced Materials (CAM), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ebrahim Mostafavi
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA.
| | - Amalina M Afifi
- Centre of Advanced Materials (CAM), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Zahra Izadiyan
- Department of Environment and Green Technology, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, 54100 Kuala Lumpur, Malaysia
| | - Hossein Jahangirian
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA.
| | | | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA.
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