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Barone V, Scirocco L, Surico PL, Micera A, Cutrupi F, Coassin M, Di Zazzo A. Mast cells and ocular surface: An update review. Exp Eye Res 2024; 245:109982. [PMID: 38942134 DOI: 10.1016/j.exer.2024.109982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/10/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
Mast cells (MCs), traditionally viewed as key players in IgE-mediated allergic responses, are increasingly recognized for their versatile roles. Situated at critical barrier sites such as the ocular surface, these sentinel cells participate in a broad array of physiological and pathological processes. This review presents a comprehensive update on the immune pathophysiology of MCs, with a particular focus on the mechanisms underlying innate immunity. It highlights their roles at the ocular surface, emphasizing their participation in allergic reactions, maintenance of corneal homeostasis, neovascularization, wound healing, and immune responses in corneal grafts. The review also explores the potential of MCs as therapeutic targets, given their significant contributions to disease pathogenesis and their capacity to modulate immunity. Through a thorough examination of current literature, we aim to elucidate the immune pathophysiology and multifaceted roles of MCs in ocular surface health and disease, suggesting directions for future research and therapeutic innovation.
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Affiliation(s)
- Vincenzo Barone
- Ophthalmology Campus Bio-Medico University, Rome, Italy; Ophthalmology Operative Complex Unit, Campus Bio-Medico University Hospital Foundation, Rome, Italy
| | - Laura Scirocco
- Ophthalmology Campus Bio-Medico University, Rome, Italy; Ophthalmology Operative Complex Unit, Campus Bio-Medico University Hospital Foundation, Rome, Italy
| | - Pier Luigi Surico
- Ophthalmology Campus Bio-Medico University, Rome, Italy; Ophthalmology Operative Complex Unit, Campus Bio-Medico University Hospital Foundation, Rome, Italy; Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Alessandra Micera
- Research and Development Laboratory for Biochemical, Molecular and Cellular Applications in Ophthalmological Science, IRCCS - Fondazione Bietti, Rome, Italy
| | - Francesco Cutrupi
- Ophthalmology Campus Bio-Medico University, Rome, Italy; Ophthalmology Operative Complex Unit, Campus Bio-Medico University Hospital Foundation, Rome, Italy
| | - Marco Coassin
- Ophthalmology Campus Bio-Medico University, Rome, Italy; Ophthalmology Operative Complex Unit, Campus Bio-Medico University Hospital Foundation, Rome, Italy
| | - Antonio Di Zazzo
- Ophthalmology Campus Bio-Medico University, Rome, Italy; Ophthalmology Operative Complex Unit, Campus Bio-Medico University Hospital Foundation, Rome, Italy; Rare Corneal Diseases Center, Campus Bio-Medico University Hospital Foundation, Rome, Italy.
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2
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Shah D, Rathod M, Tiwari A, Kini A, Bhagunde P, Bagaria V. A Histological and Biomechanical Analysis of Human Acellular Dermis (HAD) Created Using a Novel Processing and Preservation Technique. Indian J Orthop 2024; 58:922-931. [PMID: 38948369 PMCID: PMC11208345 DOI: 10.1007/s43465-024-01181-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 05/04/2024] [Indexed: 07/02/2024]
Abstract
Background Large and complex defects requiring reconstruction are challenging for orthopaedic surgeons. The use of human acellular dermal (HAD) matrices to augment large soft tissue defects such as those seen in massive rotator cuff tears, knee extensor mechanism failures and neglected Tendo-Achilles tears has proven to be a valuable tool in surgeons reconstructive armamentarium. Different methods for allograft decellularization and preservation alter the native properties of the scaffold. Traditional processing and preservation methods have shown to have drawbacks that preclude its widespread use. Some of the common issues include inferior biomechanical properties, the risk of rejection, limited customization, difficulty in storing and transporting, the requirement of pre-operative preparation, and last but not the least increased cost. Methods We describe a novel processing and preservation method utilizing a two-step non-denaturing decellularization method coupled with preservation using a water-sequestering agent (glycerol) to remove immunogenic components while retaining biomechanical properties. The efficiency of this novel process was compared with the traditional freeze-drying method and verified by histological evaluation and biomechanical strength analysis. Results The absence of cellular components and matrix integrity in hematoxylin and eosin-stained glycerol-preserved HAD (gly-HAD) samples compared to freeze-dried HAD (FD-HAD) demonstrated effective yet gentle decellularization. Biomechanical strength analysis revealed that gly-HADs are stronger with an ultimate tensile load to the failure strength of 210 N compared to FD-HAD (124N). The gly-HADs were found to have an optimal suture-retention strength of 126 N. Finally, sterility testing of the resultant grafts was checked to ensure a sterility assurance level of 10-6 to establish implantability. Conclusion The novel processing and preservation technique is described in this paper to create a Human Acellular Dermis with higher biomechanical strength and superior histological characteristics. The processing and preservation technique ensured high sterility assurance levels to establish implantability.
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Affiliation(s)
- Damini Shah
- Novo Tissue Bank and Research Centre, Mumbai, India
| | - Madhu Rathod
- Novo Tissue Bank and Research Centre, Mumbai, India
| | | | - Abhishek Kini
- Sir H N Reliance Foundation Hospital, Girgaum, Mumbai, Maharashtra 400004 India
| | - Prasad Bhagunde
- Sona Medical Centre & Consultant Orthopaedic Surgeon Saifee Hospital, Jaslok Hospital and Research Centre, Breach Candy Hospital Trust, Mumbai, India
| | - Vaibhav Bagaria
- Department of Orthopaedic Surgery, Sir H N Reliance Foundation Hospital, Girgaum, Mumbai, Maharashtra 400004 India
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Graham AJ, Partipilo G, Dundas CM, Miniel Mahfoud IE, Halwachs KN, Holwerda AJ, Simmons TR, FitzSimons TM, Coleman SM, Rinehart R, Chiu D, Tyndall AE, Sajbel KC, Rosales AM, Keitz BK. Transcriptional regulation of living materials via extracellular electron transfer. Nat Chem Biol 2024:10.1038/s41589-024-01628-y. [PMID: 38783133 DOI: 10.1038/s41589-024-01628-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 04/19/2024] [Indexed: 05/25/2024]
Abstract
Engineered living materials combine the advantages of biological and synthetic systems by leveraging genetic and metabolic programming to control material-wide properties. Here, we demonstrate that extracellular electron transfer (EET), a microbial respiration process, can serve as a tunable bridge between live cell metabolism and synthetic material properties. In this system, EET flux from Shewanella oneidensis to a copper catalyst controls hydrogel cross-linking via two distinct chemistries to form living synthetic polymer networks. We first demonstrate that synthetic biology-inspired design rules derived from fluorescence parameterization can be applied toward EET-based regulation of polymer network mechanics. We then program transcriptional Boolean logic gates to govern EET gene expression, which enables design of computational polymer networks that mechanically respond to combinations of molecular inputs. Finally, we control fibroblast morphology using EET as a bridge for programmed material properties. Our results demonstrate how rational genetic circuit design can emulate physiological behavior in engineered living materials.
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Affiliation(s)
- Austin J Graham
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Gina Partipilo
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Christopher M Dundas
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Ismar E Miniel Mahfoud
- Interdisciplinary Life Sciences Graduate Program, University of Texas at Austin, Austin, TX, USA
| | - Kathleen N Halwachs
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Alexis J Holwerda
- Interdisciplinary Life Sciences Graduate Program, University of Texas at Austin, Austin, TX, USA
| | - Trevor R Simmons
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Thomas M FitzSimons
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Sarah M Coleman
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Rebecca Rinehart
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Darian Chiu
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Avery E Tyndall
- Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, CO, USA
| | - Kenneth C Sajbel
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Adrianne M Rosales
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Benjamin K Keitz
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, TX, USA.
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Li Y, Song W, Kong L, He Y, Li H. Injectable and Microporous Microgel-Fiber Granular Hydrogel Loaded with Bioglass and siRNA for Promoting Diabetic Wound Healing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309599. [PMID: 38054634 DOI: 10.1002/smll.202309599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 11/23/2023] [Indexed: 12/07/2023]
Abstract
Injectable hydrogels find extensive application in the treatment of diabetic wound healing. However, traditional bulk hydrogels are significantly limited due to their nano-porous structure, which obstructs cell migration and tissue infiltration. Moreover, regulating inflammation and matrix metalloproteinase -9 (MMP-9) expression in diabetic wounds is crucial for enhancing wound healing. This study marks the first instance of introducing an efficient, scalable, and simple method for producing microfiber-gel granules encapsulating bioceramics powders. Utilizing this method, an injectable microporous granular microgel-fiber hydrogel (MFgel) is successfully developed by assembling microgel-fibers made from hyaluronic acid (HA) and sodium alginate (SA) loaded with small interfering RNA (siRNA) and bioglass (BG) particles. Compared to traditional hydrogels (Tgel), MFgel possesses a highly interconnected network with micron-sized pores, demonstrating favorable properties for cell adhesion and penetration in in vitro experiments. Additionally, MFgel exhibits a higher compressive modulus and superior mechanical stability. When implanted subcutaneously in mice, MFgel promotes cellular and tissue infiltration, facilitating cell proliferation. Furthermore, when applied to skin defects in diabetic rats, MFgel not only effectively regulates inflammation and suppresses MMP-9 expression but also enhances angiogenesis and collagen deposition, thereby significantly accelerating diabetic wound healing. Taken together, this hydrogel possesses great potential in diabetic wound healing applications.
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Affiliation(s)
- Ying Li
- Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, 600 Yishan Road, Shanghai, 200233, China
| | - Wei Song
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Lingzhi Kong
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Yaohua He
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
- Department of Orthopedic Surgery, Jinshan District Central Hospital affiliated to Shanghai University of Medicine & Health Sciences, Jinshan Branch of Shanghai Sixth People's Hospital, Shanghai, 201500, China
| | - Haiyan Li
- Chemical and Environment Engineering Department, School of Engineering, RMIT University, 124 La Trobe Street, Melbourne, VIC, 3001, Australia
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Long AM, Kwon JM, Lee G, Reiser NL, Vaught LA, O'Brien JG, Page PGT, Hadhazy M, Reynolds JC, Crosbie RH, Demonbreun AR, McNally EM. The extracellular matrix differentially directs myoblast motility and differentiation in distinct forms of muscular dystrophy: Dystrophic matrices alter myoblast motility. Matrix Biol 2024; 129:44-58. [PMID: 38582404 PMCID: PMC11104166 DOI: 10.1016/j.matbio.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/08/2024]
Abstract
Extracellular matrix (ECM) pathologic remodeling underlies many disorders, including muscular dystrophy. Tissue decellularization removes cellular components while leaving behind ECM components. We generated "on-slide" decellularized tissue slices from genetically distinct dystrophic mouse models. The ECM of dystrophin- and sarcoglycan-deficient muscles had marked thrombospondin 4 deposition, while dysferlin-deficient muscle had excess decorin. Annexins A2 and A6 were present on all dystrophic decellularized ECMs, but annexin matrix deposition was excessive in dysferlin-deficient muscular dystrophy. Muscle-directed viral expression of annexin A6 resulted in annexin A6 in the ECM. C2C12 myoblasts seeded onto decellularized matrices displayed differential myoblast mobility and fusion. Dystrophin-deficient decellularized matrices inhibited myoblast mobility, while dysferlin-deficient decellularized matrices enhanced myoblast movement and differentiation. Myoblasts treated with recombinant annexin A6 increased mobility and fusion like that seen on dysferlin-deficient decellularized matrix and demonstrated upregulation of ECM and muscle cell differentiation genes. These findings demonstrate specific fibrotic signatures elicit effects on myoblast activity.
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Affiliation(s)
- Ashlee M Long
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Jason M Kwon
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - GaHyun Lee
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Nina L Reiser
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Lauren A Vaught
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Joseph G O'Brien
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Patrick G T Page
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Michele Hadhazy
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Joseph C Reynolds
- Department of Integrative Biology and Physiology, UCLA, Los Angeles, CA; Department of Neurology David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Rachelle H Crosbie
- Department of Integrative Biology and Physiology, UCLA, Los Angeles, CA; Department of Neurology David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Alexis R Demonbreun
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Department of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
| | - Elizabeth M McNally
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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Mao Y, Wickström SA. Mechanical state transitions in the regulation of tissue form and function. Nat Rev Mol Cell Biol 2024:10.1038/s41580-024-00719-x. [PMID: 38600372 DOI: 10.1038/s41580-024-00719-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2024] [Indexed: 04/12/2024]
Abstract
From embryonic development, postnatal growth and adult homeostasis to reparative and disease states, cells and tissues undergo constant changes in genome activity, cell fate, proliferation, movement, metabolism and growth. Importantly, these biological state transitions are coupled to changes in the mechanical and material properties of cells and tissues, termed mechanical state transitions. These mechanical states share features with physical states of matter, liquids and solids. Tissues can switch between mechanical states by changing behavioural dynamics or connectivity between cells. Conversely, these changes in tissue mechanical properties are known to control cell and tissue function, most importantly the ability of cells to move or tissues to deform. Thus, tissue mechanical state transitions are implicated in transmitting information across biological length and time scales, especially during processes of early development, wound healing and diseases such as cancer. This Review will focus on the biological basis of tissue-scale mechanical state transitions, how they emerge from molecular and cellular interactions, and their roles in organismal development, homeostasis, regeneration and disease.
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Affiliation(s)
- Yanlan Mao
- Laboratory for Molecular Cell Biology, University College London, London, UK.
- Institute for the Physics of Living Systems, University College London, London, UK.
| | - Sara A Wickström
- Department of Cell and Tissue Dynamics, Max Planck Institute for Molecular Biomedicine, Münster, Germany.
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
- Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland.
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Haim N, Kaufman JP, Gurevich M. The Use of Active Coagulation Whole Blood-An Innovative Treatment Strategy for Hard-To-Heal Wounds. Am Surg 2024; 90:710-716. [PMID: 37878333 DOI: 10.1177/00031348231207293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
BACKGROUND Deep and tunneling wounds are a challenge to apply and maintain most advanced wound dressings to promote effective healing. An autologous whole blood clot is a topical treatment and has been found to be safe and effective in healing cutaneous wounds. The active coagulation whole blood (ACWB) clot treatment, using the patient's own blood, is used to treat deep and tunneling wounds, by mixing the blood with coagulation components and applying it into the wound cavity allowing the clot to re-form inside the wound. We aimed to explore ACWB treatment in hard-to-heal wounds. METHODS 5 patients with multiple comorbidities, exhibiting surgical abdominal wound, chronic pilonidal sinus, stage 4 sacral pressure ulcer with exposed bone, post-amputation surgical site wound, and non-healing wound dehiscence at the site of a prior hip replacement, were all treated with the ACWB clot treatment. RESULTS Complete wound healing was observed in 4/5 cases. In the fifth case, there was a 70% reduction in the depth and surface area of the abdominal surgical wound. DISCUSSION The ACWB treatment was found to be effective in deep wounds with cavities and exposed structures. ACWB, in its flowable form, can effectively provide coverage of the deepest interstices of the wound's cavities by virtue of its liquid properties, forming a fibrin matrix, mimicking the role of the extracellular matrix. The flowable formulation of ACWB treatment safely and efficiently provides coverage of the entirety of the wound surface to improve the time and process of complex wound surface healing.
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Affiliation(s)
- Nadav Haim
- Department of Surgery, Shamir Medical Center, Be'er Ya'akov, Israel
| | - Jarrod P Kaufman
- Premier Surgical, Department of Surgery at Temple University School of Medicine, Brick, NJ, USA
| | - Maxim Gurevich
- Diabetic Foot Unit, Orthopedic B Department, Hillel Yaffe Medical Center, Hadera, Israel
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Lin Z, Li LY, Chen L, Jin C, Li Y, Yang L, Li CZ, Qi CY, Gan YY, Zhang JR, Wang P, Ni LB, Wang GF. Lonicerin promotes wound healing in diabetic rats by enhancing blood vessel regeneration through Sirt1-mediated autophagy. Acta Pharmacol Sin 2024; 45:815-830. [PMID: 38066346 PMCID: PMC10943091 DOI: 10.1038/s41401-023-01193-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 11/08/2023] [Indexed: 03/17/2024] Open
Abstract
Among the numerous complications of diabetes mellitus, diabetic wounds seriously affect patients' quality of life and result in considerable psychological distress. Promoting blood vessel regeneration in wounds is a crucial step in wound healing. Lonicerin (LCR), a bioactive compound found in plants of the Lonicera japonica species and other honeysuckle plants, exhibits anti-inflammatory and antioxidant activities, and it recently has been found to alleviate ulcerative colitis by enhancing autophagy. In this study we investigated the efficacy of LCR in treatment of diabetic wounds and the underlying mechanisms. By comparing the single-cell transcriptomic data from healing and non-healing states in diabetic foot ulcers (DFU) of 5 patients, we found that autophagy and SIRT signaling activation played a crucial role in mitigating inflammation and oxidative stress, and promoting cell survival in wound healing processes. In TBHP-treated human umbilical vein endothelial cells (HUVECs), we showed that LCR alleviated cell apoptosis, and enhanced the cell viability, migration and angiogenesis. Furthermore, we demonstrated that LCR treatment dose-dependently promoted autophagy in TBHP-treated HUVECs by upregulating Sirt1 expression, and exerted its anti-apoptotic effect through the Sirt1-autophagy axis. Knockdown of Sirt1 significantly decreased the level of autophagy, and mitigated the anti-apoptotic effect of LCR. In a STZ-induced diabetic rat model, administration of LCR significantly promoted wound healing, which was significantly attenuated by Sirt1 knockdown. This study highlights the potential of LCR as a therapeutic agent for the treatment of diabetic wounds and provides insights into the molecular mechanisms underlying its effects.
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Affiliation(s)
- Zhen Lin
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21210, USA
| | - Lu-Yao Li
- College of Pharmacy, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Lu Chen
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Chen Jin
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325702, China
| | - Yue Li
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Lan Yang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Chang-Zhou Li
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Cai-Yu Qi
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Yu-Yang Gan
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Jia-Rui Zhang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Piao Wang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Li-Bin Ni
- Department of Orthopaedic Surgery, Zhejiang Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou, 310014, China.
| | - Gao-Feng Wang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, 510515, China.
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21210, USA.
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Al-Najjar MAA, Abdulrazzaq SB, Alzaghari LF, Mahmod AI, Omar A, Hasen E, Athamneh T, Talib WH, Chellappan DK, Barakat M. Evaluation of immunomodulatory potential of probiotic conditioned medium on murine macrophages. Sci Rep 2024; 14:7126. [PMID: 38531887 DOI: 10.1038/s41598-024-56622-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
Probiotics are a mixture of beneficial live bacteria and/or yeasts that naturally exist in our bodies. Recently, numerous studies have focused on the immunostimulatory effects of single-species or killed multi-species probiotic conditioned mediums on macrophages. This study investigates the immunostimulatory effect of commercially available active, multi-species probiotic conditioned medium (CM) on RAW264.7 murine macrophages. The probiotic CM was prepared by culturing the commercially available probiotic in a cell-culture medium overnight at 37 °C, followed by centrifugation and filter-sterilization to be tested on macrophages. The immunostimulatory effect of different dilution percentages (50%, 75%, 100%) of CM was examined using the MTT assay, proinflammatory cytokine (tumor necrosis factor TNF-alpha) production in macrophages, migration, and phagocytosis assays. For all the examined CM ratios, the percentages of cell viability were > 80%. Regarding the migration scratch, TNF-alpha and phagocytosis assays, CM demonstrated a concentration-dependent immunostimulatory effect. However, the undiluted CM (100%) showed a significant (p-value < 0.05) stimulatory effect compared to the positive and negative controls. The findings suggest that the secretions and products of probiotics, as measured in the CM, may be closely associated with their immune-boosting effects. Understanding this relationship between probiotic secretions and immune function is crucial for further exploring the potential benefits of probiotics in enhancing overall health and well-being.
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Affiliation(s)
| | | | | | | | - Amin Omar
- Faculty of Pharmacy, Applied Science Private University, 11937, Amman, Jordan
| | - Eliza Hasen
- MEA Research Center, Middle East University, Amman, Jordan
| | - Tamara Athamneh
- Institute of Nanotechnology, Jordan University of Science and Technology, Irbid, Jordan
| | - Wamidh H Talib
- Faculty of Allied Medical Sciences, Applied Science Private University, 11937, Amman, Jordan
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, 57000, Bukit Jalil, Kuala Lumpur, Malaysia
| | - Muna Barakat
- Faculty of Pharmacy, Applied Science Private University, 11937, Amman, Jordan.
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Niezgoda JA. Welcoming CAMPs. J Wound Care 2024; 33:S3. [PMID: 38457294 DOI: 10.12968/jowc.2024.33.sup3.s3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Affiliation(s)
- Jeffrey A Niezgoda
- President and Chief Medical Officer, WebCME/RxOS Medical/Auxillium Health; Founder and President Emeritus, AZH Wound & Hyperbaric Center; Past President, American Professional Wound Care Society; Chief Medical Officer, Kent Imaging, Calgary, Canada
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Miguez PA, Bash E, Musskopf ML, Tuin SA, Rivera-Concepcion A, Chapple ILC, Liu J. Control of tissue homeostasis by the extracellular matrix: Synthetic heparan sulfate as a promising therapeutic for periodontal health and bone regeneration. Periodontol 2000 2024; 94:510-531. [PMID: 37614159 PMCID: PMC10891305 DOI: 10.1111/prd.12515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/13/2023] [Accepted: 07/22/2023] [Indexed: 08/25/2023]
Abstract
Proteoglycans are core proteins associated with carbohydrate/sugar moieties that are highly variable in disaccharide composition, which dictates their function. These carbohydrates are named glycosaminoglycans, and they can be attached to proteoglycans or found free in tissues or on cell surfaces. Glycosaminoglycans such as hyaluronan, chondroitin sulfate, dermatan sulfate, keratan sulfate, and heparin/heparan sulfate have multiple functions including involvement in inflammation, immunity and connective tissue structure, and integrity. Heparan sulfate is a highly sulfated polysaccharide that is abundant in the periodontium including alveolar bone. Recent evidence supports the contention that heparan sulfate is an important player in modulating interactions between damage associated molecular patterns and inflammatory receptors expressed by various cell types. The structure of heparan sulfate is reported to dictate its function, thus, the utilization of a homogenous and structurally defined heparan sulfate polysaccharide for modulation of cell function offers therapeutic potential. Recently, a chemoenzymatic approach was developed to allow production of many structurally defined heparan sulfate carbohydrates. These oligosaccharides have been studied in various pathological inflammatory conditions to better understand their function and their potential application in promoting tissue homeostasis. We have observed that specific size and sulfation patterns can modulate inflammation and promote tissue maintenance including an anabolic effect in alveolar bone. Thus, new evidence provides a strong impetus to explore heparan sulfate as a potential novel therapeutic agent to treat periodontitis, support alveolar bone maintenance, and promote bone formation.
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Affiliation(s)
- PA Miguez
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - E Bash
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - ML Musskopf
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - SA Tuin
- Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - A Rivera-Concepcion
- Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - ILC Chapple
- Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, Birmingham’s NIHR BRC in Inflammation Research, University of Birmingham and Birmingham Community Health Foundation Trust, Birmingham UK Iain Chapple
| | - J Liu
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
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Fumasi FM, MacCulloch T, Bernal-Chanchavac J, Stephanopoulos N, Holloway JL. Using dynamic biomaterials to study the temporal role of bioactive peptides during osteogenesis. BIOMATERIALS ADVANCES 2024; 157:213726. [PMID: 38096646 PMCID: PMC10842892 DOI: 10.1016/j.bioadv.2023.213726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/23/2023] [Accepted: 12/05/2023] [Indexed: 12/26/2023]
Abstract
The extracellular matrix is a highly dynamic environment, and the precise temporal presentation of biochemical signals is critical for regulating cell behavior during development, healing, and disease progression. To mimic this behavior, we developed a modular DNA-based hydrogel platform to enable independent and reversible control over the immobilization of multiple biomolecules during in vitro cell culture. We combined reversible DNA handles with a norbornene-modified hyaluronic acid hydrogel to orthogonally add and remove multiple biomolecule-DNA conjugates at user-defined timepoints. We demonstrated that the persistent presentation of the cell adhesion peptide RGD was required to maintain cell spreading on hyaluronic acid hydrogels. Further, we discovered the delayed presentation of osteogenic growth peptide (OGP) increased alkaline phosphatase activity compared to other temporal variations. This finding is critically important when considering the design of OGP delivery approaches for bone repair. More broadly, this platform provides a unique approach to tease apart the temporal role of multiple biomolecules during development, regeneration, and disease progression.
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Affiliation(s)
- Fallon M Fumasi
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, United States of America
| | - Tara MacCulloch
- Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, United States of America; School of Molecular Sciences, Arizona State University, Tempe, AZ, United States of America
| | - Julio Bernal-Chanchavac
- Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, United States of America; School of Molecular Sciences, Arizona State University, Tempe, AZ, United States of America.
| | - Nicholas Stephanopoulos
- Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, United States of America; School of Molecular Sciences, Arizona State University, Tempe, AZ, United States of America.
| | - Julianne L Holloway
- Chemical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, United States of America; Biodesign Center for Molecular Design and Biomimetics, Arizona State University, Tempe, AZ, United States of America.
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13
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Wareham LK, Baratta RO, Del Buono BJ, Schlumpf E, Calkins DJ. Collagen in the central nervous system: contributions to neurodegeneration and promise as a therapeutic target. Mol Neurodegener 2024; 19:11. [PMID: 38273335 PMCID: PMC10809576 DOI: 10.1186/s13024-024-00704-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/10/2024] [Indexed: 01/27/2024] Open
Abstract
The extracellular matrix is a richly bioactive composition of substrates that provides biophysical stability, facilitates intercellular signaling, and both reflects and governs the physiological status of the local microenvironment. The matrix in the central nervous system (CNS) is far from simply an inert scaffold for mechanical support, instead conducting an active role in homeostasis and providing broad capacity for adaptation and remodeling in response to stress that otherwise would challenge equilibrium between neuronal, glial, and vascular elements. A major constituent is collagen, whose characteristic triple helical structure renders mechanical and biochemical stability to enable bidirectional crosstalk between matrix and resident cells. Multiple members of the collagen superfamily are critical to neuronal maturation and circuit formation, axon guidance, and synaptogenesis in the brain. In mature tissue, collagen interacts with other fibrous proteins and glycoproteins to sustain a three-dimensional medium through which complex networks of cells can communicate. While critical for matrix scaffolding, collagen in the CNS is also highly dynamic, with multiple binding sites for partnering matrix proteins, cell-surface receptors, and other ligands. These interactions are emerging as critical mediators of CNS disease and injury, particularly regarding changes in matrix stiffness, astrocyte recruitment and reactivity, and pro-inflammatory signaling in local microenvironments. Changes in the structure and/or deposition of collagen impact cellular signaling and tissue biomechanics in the brain, which in turn can alter cellular responses including antigenicity, angiogenesis, gliosis, and recruitment of immune-related cells. These factors, each involving matrix collagen, contribute to the limited capacity for regeneration of CNS tissue. Emerging therapeutics that attempt to rebuild the matrix using peptide fragments, including collagen-enriched scaffolds and mimetics, hold great potential to promote neural repair and regeneration. Recent evidence from our group and others indicates that repairing protease-degraded collagen helices with mimetic peptides helps restore CNS tissue and promote neuronal survival in a broad spectrum of degenerative conditions. Restoration likely involves bolstering matrix stiffness to reduce the potential for astrocyte reactivity and local inflammation as well as repairing inhibitory binding sites for immune-signaling ligands. Facilitating repair rather than endogenous replacement of collagen degraded by disease or injury may represent the next frontier in developing therapies based on protection, repair, and regeneration of neurons in the central nervous system.
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Affiliation(s)
- Lauren K Wareham
- Department of Ophthalmology and Visual Sciences, Vanderbilt Eye Institute , Vanderbilt University Medical Center, 1161 21st Avenue S, 37232, Nashville, TN, USA
| | - Robert O Baratta
- Stuart Therapeutics, Inc., 411 SE Osceola St, 34994, Stuart, FL, USA
| | - Brian J Del Buono
- Stuart Therapeutics, Inc., 411 SE Osceola St, 34994, Stuart, FL, USA
| | - Eric Schlumpf
- Stuart Therapeutics, Inc., 411 SE Osceola St, 34994, Stuart, FL, USA
| | - David J Calkins
- Department of Ophthalmology and Visual Sciences, Vanderbilt Eye Institute , Vanderbilt University Medical Center, 1161 21st Avenue S, 37232, Nashville, TN, USA
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14
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Psathas E, Egger B, Mayer D. Dehydrated human amnion/chorion membrane allograft with spongy layer to significantly improve the outcome of chronic non-healing wounds. Int Wound J 2024; 21:e14356. [PMID: 37661177 PMCID: PMC10781888 DOI: 10.1111/iwj.14356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/03/2023] [Accepted: 08/05/2023] [Indexed: 09/05/2023] Open
Abstract
We investigated the healing effect of a new dehydrated amnion/chorion membrane with a spongy layer over a 30-month period in 32 patients with 53 chronic non-healing wounds of different aetiologies. Wounds with <40% surface reduction after 4 weeks of best wound treatment underwent weekly allograft application by a certified wound specialist based on national guidelines and a standardised protocol until complete healing or definite treatment interruption. The main outcome measure was the percentage of wound surface reduction from baseline calculated using digital planimetry follow-up photographs. Overall, 38 (71.7%) wounds presented a favourable outcome (70%-100% area reduction), with 35 (66%) completely healing over a median time of 77 days (range 29-350 days). Favourable outcomes were observed in 75% of traumatic wounds, surgical wounds, venous leg ulcers and pressure injuries, as well as in 50% of ischaemic wounds. Wounds being present <12 months were significantly more likely to have a favourable outcome than more long-standing wounds (χ2 = 7.799; p = 0.005; OR = 3.378; 95% CI, 1.410-8.092). Thus, treatment with dehydrated amnion/chorion membrane with a spongy layer improves the outcome of non-healing wounds of different aetiologies and, therefore, has to be considered early in the management of refractory wounds.
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Affiliation(s)
- Emmanouil Psathas
- Department of SurgeryHFR—Fribourg Cantonal HospitalFribourgSwitzerland
- Faculty of Science and MedicineUniversity of FribourgFribourgSwitzerland
| | - Bernhard Egger
- Department of SurgeryHFR—Fribourg Cantonal HospitalFribourgSwitzerland
- Faculty of Science and MedicineUniversity of FribourgFribourgSwitzerland
| | - Dieter Mayer
- Department of SurgeryHFR—Fribourg Cantonal HospitalFribourgSwitzerland
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15
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Yang X, Xiong M, Fu X, Sun X. Bioactive materials for in vivo sweat gland regeneration. Bioact Mater 2024; 31:247-271. [PMID: 37637080 PMCID: PMC10457517 DOI: 10.1016/j.bioactmat.2023.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/30/2023] [Accepted: 07/30/2023] [Indexed: 08/29/2023] Open
Abstract
Loss of sweat glands (SwGs) commonly associated with extensive skin defects is a leading cause of hyperthermia and heat stroke. In vivo tissue engineering possesses the potential to take use of the body natural ability to regenerate SwGs, making it more conducive to clinical translation. Despite recent advances in regenerative medicine, reconstructing SwG tissue with the same structure and function as native tissue remains challenging. Elucidating the SwG generation mechanism and developing biomaterials for in vivo tissue engineering is essential for understanding and developing in vivo SwG regenerative strategies. Here, we outline the cell biology associated with functional wound healing and the characteristics of bioactive materials. We critically summarize the recent progress in bioactive material-based cell modulation approaches for in vivo SwG regeneration, including the recruitment of endogenous cells to the skin lesion for SwG regeneration and in vivo cellular reprogramming for SwG regeneration. We discussed the re-establishment of microenvironment via bioactive material-mediated regulators. Besides, we offer promising perspectives for directing in situ SwG regeneration via bioactive material-based cell-free strategy, which is a simple and effective approach to regenerate SwG tissue with both fidelity of structure and function. Finally, we discuss the opportunities and challenges of in vivo SwG regeneration in detail. The molecular mechanisms and cell fate modulation of in vivo SwG regeneration will provide further insights into the regeneration of patient-specific SwGs and the development of potential intervention strategies for gland-derived diseases.
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Affiliation(s)
- Xinling Yang
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, PR China
| | - Mingchen Xiong
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, PR China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, PR China
| | - Xiaoyan Sun
- Research Center for Tissue Repair and Regeneration Affiliated to Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, PR China
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16
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Lin Z, Shibuya Y, Imai Y, Oshima J, Sasaki M, Sasaki K, Aihara Y, Khanh VC, Sekido M. Therapeutic Potential of Adipose-Derived Stem Cell-Conditioned Medium and Extracellular Vesicles in an In Vitro Radiation-Induced Skin Injury Model. Int J Mol Sci 2023; 24:17214. [PMID: 38139042 PMCID: PMC10743562 DOI: 10.3390/ijms242417214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/30/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Radiotherapy (RT) is one of three major treatments for malignant tumors, and one of its most common side effects is skin and soft tissue injury. However, the treatment of these remains challenging. Several studies have shown that mesenchymal stem cell (MSC) treatment enhances skin wound healing. In this study, we extracted human dermal fibroblasts (HDFs) and adipose-derived stem cells (ADSCs) from patients and generated an in vitro radiation-induced skin injury model with HDFs to verify the effect of conditioned medium derived from adipose-derived stem cells (ADSC-CM) and extracellular vesicles derived from adipose-derived stem cells (ADSC-EVs) on the healing of radiation-induced skin injury. The results showed that collagen synthesis was significantly increased in wounds treated with ADSC-CM or ADSC-EVs compared with the control group, which promoted the expression of collagen-related genes and suppressed the expression of inflammation-related genes. These findings indicated that treatment with ADSC-CM or ADSC-EVs suppressed inflammation and promoted extracellular matrix deposition; treatment with ADSC-EVs also promoted fibroblast proliferation. In conclusion, these results demonstrate the effectiveness of ADSC-CM and ADSC-EVs in the healing of radiation-induced skin injury.
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Affiliation(s)
- Zhixiang Lin
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
| | - Yoichiro Shibuya
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
| | - Yukiko Imai
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
| | - Junya Oshima
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
| | - Masahiro Sasaki
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
- Department of Plastic and Reconstructive Surgery, Mito Saiseikai General Hospital, Mito 311-4145, Ibaraki, Japan
| | - Kaoru Sasaki
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
| | - Yukiko Aihara
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
| | - Vuong Cat Khanh
- Laboratory of Regenerative Medicine and Stem Cell Biology, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan
| | - Mitsuru Sekido
- Department of Plastic and Reconstructive Surgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Ibaraki, Japan (Y.I.); (M.S.)
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17
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Niezgoda J. Foreword. J Wound Care 2023; 32:S3. [PMID: 38175767 DOI: 10.12968/jowc.2023.32.sup12a.s3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Affiliation(s)
- Jeffrey Niezgoda
- President and Chief Medical Officer, WebCME/RxOS Medical/Auxillium Health; Founder and President Emeritus, AZH Wound & Hyperbaric Center; President, American Professional Wound Care Society; Chief Medical Officer, Kent Imaging, Calgary, Canada
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18
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Bai R, Guo Y, Liu W, Song Y, Yu Z, Ma X. The Roles of WNT Signaling Pathways in Skin Development and Mechanical-Stretch-Induced Skin Regeneration. Biomolecules 2023; 13:1702. [PMID: 38136575 PMCID: PMC10741662 DOI: 10.3390/biom13121702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023] Open
Abstract
The WNT signaling pathway plays a critical role in a variety of biological processes, including development, adult tissue homeostasis maintenance, and stem cell regulation. Variations in skin conditions can influence the expression of the WNT signaling pathway. In light of the above, a deeper understanding of the specific mechanisms of the WNT signaling pathway in different physiological and pathological states of the skin holds the potential to significantly advance clinical treatments of skin-related diseases. In this review, we present a comprehensive analysis of the molecular and cellular mechanisms of the WNT signaling pathway in skin development, wound healing, and mechanical stretching. Our review sheds new light on the crucial role of the WNT signaling pathway in the regulation of skin physiology and pathology.
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Affiliation(s)
- Ruoxue Bai
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yaotao Guo
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
- Department of The Cadet Team 6, School of Basic Medicine, Fourth Military Medical University, Xi’an 710032, China
| | - Wei Liu
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yajuan Song
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Zhou Yu
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Xianjie Ma
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
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19
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Tian Q, Yang F, Jiang H, Bhattacharyya P, Xie T, Ali AA, Sun Y, You M. Imaging and detecting intercellular tensile forces in spheroids and embryoid bodies using lipid-modified DNA probes. Front Cell Dev Biol 2023; 11:1220079. [PMID: 37920824 PMCID: PMC10619156 DOI: 10.3389/fcell.2023.1220079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/09/2023] [Indexed: 11/04/2023] Open
Abstract
Cells continuously experience and respond to different physical forces that are used to regulate their physiology and functions. Our ability to measure these mechanical cues is essential for understanding the bases of various mechanosensing and mechanotransduction processes. While multiple strategies have been developed to study mechanical forces within two-dimensional (2D) cell culture monolayers, the force measurement at cell-cell junctions in real three-dimensional (3D) cell models is still pretty rare. Considering that in real biological systems, cells are exposed to forces from 3D directions, measuring these molecular forces in their native environment is thus highly critical for the better understanding of different development and disease processes. We have recently developed a type of DNA-based molecular probe for measuring intercellular tensile forces in 2D cell models. Herein, we will report the further development and first-time usage of these molecular tension probes to visualize and detect mechanical forces within 3D spheroids and embryoid bodies (EBs). These probes can spontaneously anchor onto live cell membranes via the attached lipid moieties. By varying the concentrations of these DNA probes and their incubation time, we have first characterized the kinetics and efficiency of probe penetration and loading onto tumor spheroids and stem cell EBs of different sizes. After optimization, we have further imaged and measured E-cadherin-mediated forces in these 3D spheroids and EBs for the first time. Our results indicated that these DNA-based molecular tension probes can be used to study the spatiotemporal distributions of target mechanotransduction processes. These powerful imaging tools may be potentially applied to fill the gap between ongoing research of biomechanics in 2D systems and that in real 3D cell complexes.
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Affiliation(s)
- Qian Tian
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, United States
| | - Feiyu Yang
- Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, MA, United States
| | - Han Jiang
- Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, MA, United States
| | - Priyanka Bhattacharyya
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, United States
| | - Tianfa Xie
- Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, MA, United States
| | - Ahsan Ausaf Ali
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, United States
| | - Yubing Sun
- Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, MA, United States
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, MA, United States
| | - Mingxu You
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, United States
- Molecular and Cellular Biology Program, University of Massachusetts Amherst, Amherst, MA, United States
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20
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Kuzucu M. Extremophilic Solutions: The Role of Deinoxanthin in Counteracting UV-Induced Skin Harm. Curr Issues Mol Biol 2023; 45:8372-8394. [PMID: 37886971 PMCID: PMC10605247 DOI: 10.3390/cimb45100528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023] Open
Abstract
This research delved into the protective capacities of deinoxanthin, a carotenoid present in Deinococcus radiodurans, against UVA- and UVB-mediated skin damage using human fibroblast foreskin cells (HFF-1). Using the MTT assay, HFF-1 cells treated with 10 µM DNX displayed 20% and 31.7% higher viability than the positive (Vitamin C-treated) and negative (DNX-untreated) control groups, respectively, upon 100 mJ/cm2 UVB exposure. At 24 J/cm2 UVA, 20 µM DNX-treated cells showed 80.6% viability, exceeding the positive and negative control groups by 28.6% and 33.6%, respectively. Flow cytometry analysis revealed that cells treated with DNX and exposed to 24 J/cm2 UVA exhibited a 69.32% reduction in apoptotic processes compared to untreated cells. Similarly, when exposed to 100 mJ/cm2 UVB, DNX-treated cells demonstrated a 72.35% decrease in apoptotic processes relative to their untreated counterparts. DNX also displayed dose-dependent inhibition on tyrosinase activity. The study emphasized DNX's antioxidative capacity, evident in its modulation of superoxide dismutase activity and measurements of Malondialdehyde and intracellular reactive oxygen species levels. DNX-treated cells exhibited higher hydroxyproline levels, suggesting healthier collagen production. Additionally, the wound-healing assay method confirmed an accelerated healing rate in DNX-treated cells. Conclusively, DNX offers significant protection against UV-induced skin damage, emphasizing its potential for skincare and therapeutics.
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Affiliation(s)
- Mehmet Kuzucu
- Department of Biology, Faculty of Arts and Sciences, Erzincan Binali Yildirim University, Erzincan 24100, Türkiye
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21
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LaBelle SA, Poulson AM, Maas SA, Rauff A, Ateshian GA, Weiss JA. Spatial Configurations of 3D Extracellular Matrix Collagen Density and Anisotropy Simultaneously Guide Angiogenesis. PLoS Comput Biol 2023; 19:e1011553. [PMID: 37871113 PMCID: PMC10621972 DOI: 10.1371/journal.pcbi.1011553] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 11/02/2023] [Accepted: 09/29/2023] [Indexed: 10/25/2023] Open
Abstract
Extracellular matrix (ECM) collagen density and fibril anisotropy are thought to affect the development of new vasculatures during pathologic and homeostatic angiogenesis. Computational simulation is emerging as a tool to investigate the role of matrix structural configurations on cell guidance. However, prior computational models have only considered the orientation of collagen as a model input. Recent experimental evidence indicates that cell guidance is simultaneously influenced by the direction and intensity of alignment (i.e., degree of anisotropy) as well as the local collagen density. The objective of this study was to explore the role of ECM collagen anisotropy and density during sprouting angiogenesis through simulation in the AngioFE and FEBio modeling frameworks. AngioFE is a plugin for FEBio (Finite Elements for Biomechanics) that simulates cell-matrix interactions during sprouting angiogenesis. We extended AngioFE to represent ECM collagen as deformable 3D ellipsoidal fibril distributions (EFDs). The rate and direction of microvessel growth were modified to depend simultaneously on the ECM collagen anisotropy (orientation and degree of anisotropy) and density. The sensitivity of growing neovessels to these stimuli was adjusted so that AngioFE could reproduce the growth and guidance observed in experiments where microvessels were cultured in collagen gels of varying anisotropy and density. We then compared outcomes from simulations using EFDs to simulations that used AngioFE's prior vector field representation of collagen anisotropy. We found that EFD simulations were more accurate than vector field simulations in predicting experimentally observed microvessel guidance. Predictive simulations demonstrated the ability of anisotropy gradients to recruit microvessels across short and long distances relevant to wound healing. Further, simulations predicted that collagen alignment could enable microvessels to overcome dense tissue interfaces such as tumor-associated collagen structures (TACS) found in desmoplasia and tumor-stroma interfaces. This approach can be generalized to other mechanobiological relationships during cell guidance phenomena in computational settings.
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Affiliation(s)
- Steven A. LaBelle
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, United States of America
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, Utah, United States of America
| | - A. Marsh Poulson
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, Utah, United States of America
| | - Steve A. Maas
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, United States of America
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, Utah, United States of America
| | - Adam Rauff
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, United States of America
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, Utah, United States of America
| | - Gerard A. Ateshian
- Department of Mechanical Engineering, Columbia University, New York, New York, United States of America
| | - Jeffrey A. Weiss
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah, United States of America
- Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, Utah, United States of America
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22
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Qin Q, Haba D, Takizawa C, Tomida S, Kunimitsu M, Minematsu T, Sanada H, Nakagami G. A method for harvesting viable cells from wound dressings. Exp Dermatol 2023; 32:1521-1530. [PMID: 37345866 DOI: 10.1111/exd.14857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 05/08/2023] [Accepted: 06/01/2023] [Indexed: 06/23/2023]
Abstract
Wound fluid has been well studied for exploring protein biomarkers contained in it. However, cells in wound fluid have not received much attention due to the difficulty in their collection. Our study aimed to establish a method for collecting viable cells from discarded wound dressings. A protocol was designed to wash out nonadherent cells and detach adherent cells from silicone-faced foam wound dressings using trypsin-EDTA. The optimal concentration and incubation time of trypsin-EDTA for collecting equivalent proportions of different cell types to the original cell population were determined in vitro. Cell composition and gene expression changes in monocytes, lymphocytes, neutrophils, fibroblasts and keratinocytes were confirmed using immunocytochemistry and RNA-sequencing ex vivo. Full-thickness wounds were created on 9-week-old male C57BL/6J mice. Wound fluid was collected, and half of it was applied to the wound dressings. The original cell population in the wound fluid and the cell population collected from wound dressings were compared. In the in vitro study, 0.25% trypsin-EDTA and 2.5-min incubation time were considered optimal for collecting adherent cells from wound dressings. In the ex vivo study, among all cell types, only CD3+ lymphocytes showed a significantly higher cell proportion in the collected group. The relative gene expression of the five selected cells showed no significant changes (p-value >0.05, |log2 fold change| < 1.5, differential gene expression analysis). Viable nonadherent and adherent cells were collected from wound dressings without altering gene expression and could be used in future studies for cellular analysis of wound fluid.
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Affiliation(s)
- Qi Qin
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Daijiro Haba
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Chihiro Takizawa
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sanai Tomida
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mao Kunimitsu
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takeo Minematsu
- Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
- Department of Skincare Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiromi Sanada
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
| | - Gojiro Nakagami
- Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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23
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Mavrogonatou E, Papadopoulou A, Pratsinis H, Kletsas D. Senescence-associated alterations in the extracellular matrix: deciphering their role in the regulation of cellular function. Am J Physiol Cell Physiol 2023; 325:C633-C647. [PMID: 37486063 DOI: 10.1152/ajpcell.00178.2023] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
The extracellular matrix (ECM) is a dynamic structural network that provides a physical scaffolding, as well as biochemical factors that maintain normal tissue homeostasis and thus its disruption is implicated in many pathological conditions. On the other hand, senescent cells express a particular secretory phenotype, affecting the composition and organization of the surrounding ECM and modulating their microenvironment. As accumulation of senescent cells may be linked to the manifestation of several age-related conditions, senescence-associated ECM alterations may serve as targets for novel anti-aging treatment modalities. Here, we will review characteristic changes in the ECM elicited by cellular senescence and we will discuss the complex interplay between ECM and senescent cells, in relation to normal aging and selected age-associated pathologies.
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Affiliation(s)
- Eleni Mavrogonatou
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos," Athens, Greece
| | - Adamantia Papadopoulou
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos," Athens, Greece
| | - Harris Pratsinis
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos," Athens, Greece
| | - Dimitris Kletsas
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, National Centre for Scientific Research "Demokritos," Athens, Greece
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24
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Hwang JH, Kang Y, Park HJ, Kim S, Lee SH, Kim H, Nam SJ, Lim KM. Skin wound healing effects of (+)-syringaresinol from ginseng berry. J Ginseng Res 2023; 47:654-661. [PMID: 37720576 PMCID: PMC10499580 DOI: 10.1016/j.jgr.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/22/2023] [Accepted: 04/09/2023] [Indexed: 09/19/2023] Open
Abstract
Background Ginseng has been used as a traditional medicine and functional cosmetic ingredients for many years. Recent studies have focused on the potential biological effects of the ginseng berry and its ingredients. (+)-Syringaresinol (SYR) is enriched in ginseng berry and its beneficial effects on the skin have been recently reported. However, little is known about the its effects on the wound healing process of skin. Methods Here, we evaluated the skin wound healing effect of (+)-SYR using the human fibroblast Hs68 cell and ex vivo pig and human skin tissue model. Scratch wound test and hydrogen peroxide (HPO) induce chemical wound model were employed. Results (+)-SYR promoted the migration and proliferation of Hs68 cells without significant cytotoxicity at the tested concentrations. Especially, in ex vivo pig and human skin tissue, HPO-induced chemical wound was recovered almost completely by (+)-SYR. In line with the finding in Hs68, the protein expression levels of TGF-β and PCNA, a proliferation marker were increased, demonstrating the beneficial effects of (+)-SYR on skin wound repair. Conclusion Collectively, we demonstrated that (+)-SYR from ginseng berry, can enhance the wound healing effect by accelerating cell proliferation and skin regeneration, suggesting the potential utility of (+)-SYR for skin wound repair.
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Affiliation(s)
- Jee-hyun Hwang
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | - Yeonsoo Kang
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | - Heui-Jin Park
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | | | | | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, Republic of Korea
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
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25
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Hogan KJ, Perez MR, Mikos AG. Extracellular matrix component-derived nanoparticles for drug delivery and tissue engineering. J Control Release 2023; 360:888-912. [PMID: 37482344 DOI: 10.1016/j.jconrel.2023.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/16/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
The extracellular matrix (ECM) consists of a complex combination of proteins, proteoglycans, and other biomolecules. ECM-based materials have been demonstrated to have high biocompatibility and bioactivity, which may be harnessed for drug delivery and tissue engineering applications. Herein, nanoparticles incorporating ECM-based materials and their applications in drug delivery and tissue engineering are reviewed. Proteins such as gelatin, collagen, and fibrin as well as glycosaminoglycans including hyaluronic acid, chondroitin sulfate, and heparin have been employed for cancer therapeutic delivery, gene delivery, and wound healing and regenerative medicine. Strategies for modifying and functionalizing these materials with synthetic and natural polymers or to enable stimuli-responsive degradation and drug release have increased the efficacy of these materials and nano-systems. The incorporation and modification of ECM-based materials may be used to drive drug targeting and increase tissue-specific cell differentiation more effectively.
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Affiliation(s)
- Katie J Hogan
- Department of Bioengineering, Rice University, Houston, TX, USA; Medical Scientist Training Program, Baylor College of Medicine, Houston, TX, USA
| | - Marissa R Perez
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, USA.
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26
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Iacopetti I, Perazzi A, Patruno M, Contiero B, Carolo A, Martinello T, Melotti L. Assessment of the quality of the healing process in experimentally induced skin lesions treated with autologous platelet concentrate associated or unassociated with allogeneic mesenchymal stem cells: preliminary results in a large animal model. Front Vet Sci 2023; 10:1219833. [PMID: 37559892 PMCID: PMC10407250 DOI: 10.3389/fvets.2023.1219833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/13/2023] [Indexed: 08/11/2023] Open
Abstract
Regenerative medicine for the treatment of skin lesions is an innovative and rapidly developing field that aims to promote wound healing and restore the skin to its original condition before injury. Over the years, different topical treatments have been evaluated to improve skin wound healing and, among them, mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) have shown promising results for this purpose. This study sought to evaluate the quality of the healing process in experimentally induced full-thickness skin lesions treated with PRP associated or unassociated with MSCs in a sheep second intention wound healing model. After having surgically created full-thickness wounds on the back of three sheep, the wound healing process was assessed by performing clinical evaluations, histopathological examinations, and molecular analysis. Treated wounds showed a reduction of inflammation and contraction along with an increased re-epithelialization rate and better maturation of the granulation tissue compared to untreated lesions. In particular, the combined treatment regulated the expression of collagen types I and III resulting in a proper resolution of the granulation tissue contrary to what was observed in untreated wounds; moreover, it led to a better maturation and organization of skin adnexa and collagen fibers in the repaired skin compared to untreated and PRP-treated wounds. Overall, both treatments improved the wound healing process compared to untreated wounds. Wounds treated with PRP and MSCs showed a healing progression that qualitatively resembles a restitutio ad integrum of the repaired skin, showing features typical of a mature healthy dermis.
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Affiliation(s)
- Ilaria Iacopetti
- Department of Animal Medicine, Production and Health, University of Padua, Padova, Italy
| | - Anna Perazzi
- Department of Animal Medicine, Production and Health, University of Padua, Padova, Italy
| | - Marco Patruno
- Department of Comparative Biomedicine and Food Science, University of Padua, Padova, Italy
| | - Barbara Contiero
- Department of Animal Medicine, Production and Health, University of Padua, Padova, Italy
| | - Anna Carolo
- Department of Comparative Biomedicine and Food Science, University of Padua, Padova, Italy
| | | | - Luca Melotti
- Department of Comparative Biomedicine and Food Science, University of Padua, Padova, Italy
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27
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Fumasi FM, MacCulloch T, Bernal-Chanchavac J, Stephanopoulos N, Holloway JL. Using dynamic biomaterials to study the temporal role of osteogenic growth peptide during osteogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.19.549767. [PMID: 37502890 PMCID: PMC10370201 DOI: 10.1101/2023.07.19.549767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
The extracellular matrix is a highly dynamic environment, and the precise temporal presentation of biochemical signals is critical for regulating cell behavior during development, healing, and disease progression. To mimic this behavior, we developed a modular DNA-based hydrogel platform to enable independent and reversible control over the immobilization of multiple biomolecules during in vitro cell culture. We combined reversible DNA handles with a norbornene-modified hyaluronic acid hydrogel to orthogonally add and remove multiple biomolecule-DNA conjugates at user-defined timepoints. We demonstrated that the persistent presentation of the cell adhesion peptide RGD was required to maintain cell spreading on hyaluronic acid hydrogels. Further, we discovered the delayed presentation of osteogenic growth peptide (OGP) increased alkaline phosphatase activity compared to other temporal variations. This finding is critically important when considering the design of OGP delivery approaches for bone repair. More broadly, this platform provides a unique approach to tease apart the temporal role of multiple biomolecules during development, regeneration, and disease progression.
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28
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Kidzeru EB, Lebeko M, Sharma JR, Nkengazong L, Adeola HA, Ndlovu H, P Khumalo N, Bayat A. Immune cells and associated molecular markers in dermal fibrosis with focus on raised cutaneous scars. Exp Dermatol 2023; 32:570-587. [PMID: 36562321 PMCID: PMC10947010 DOI: 10.1111/exd.14734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/04/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Raised dermal scars including hypertrophic, and keloid scars as well as scalp-associated fibrosing Folliculitis Keloidalis Nuchae (FKN) are a group of fibrotic raised dermal lesions that mostly occur following cutaneous injury. They are characterized by increased extracellular matrix (ECM) deposition, primarily excessive collagen type 1 production by hyperproliferative fibroblasts. The extent of ECM deposition is thought to be proportional to the severity of local skin inflammation leading to excessive fibrosis of the dermis. Due to a lack of suitable study models, therapy for raised dermal scars remains ill-defined. Immune cells and their associated markers have been strongly associated with dermal fibrosis. Therefore, modulation of the immune system and use of anti-inflammatory cytokines are of potential interest in the management of dermal fibrosis. In this review, we will discuss the importance of immune factors in the pathogenesis of raised dermal scarring. The aim here is to provide an up-to-date comprehensive review of the literature, from PubMed, Scopus, and other relevant search engines in order to describe the known immunological factors associated with raised dermal scarring. The importance of immune cells including mast cells, macrophages, lymphocytes, and relevant molecules such as cytokines, chemokines, and growth factors, antibodies, transcription factors, and other immune-associated molecules as well as tissue lymphoid aggregates identified within raised dermal scars will be presented. A growing body of evidence points to a shift from proinflammatory Th1 response to regulatory/anti-inflammatory Th2 response being associated with the development of fibrogenesis in raised dermal scarring. In summary, a better understanding of immune cells and associated molecular markers in dermal fibrosis will likely enable future development of potential immune-modulated therapeutic, diagnostic, and theranostic targets in raised dermal scarring.
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Affiliation(s)
- Elvis Banboye Kidzeru
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
- Microbiology, Infectious Diseases, and Immunology Laboratory (LAMMII)Centre for Research on Health and Priority Pathologies (CRSPP)Institute of Medical Research and Medicinal Plant Studies (IMPM), Ministry of Scientific Research and InnovationYaoundéCameroon
| | - Maribanyana Lebeko
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
- Present address:
Cape Biologix Technologies (PTY, LTD)Cape TownSouth Africa
| | - Jyoti Rajan Sharma
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
- Biomedical Research and Innovation Platform, South African Medical Research Council, Francie van Zijl Drive, Parow ValleyCape TownSouth Africa
- Present address:
Biomedical Research and Innovation Platform, South African Medical Research Council, Francie van Zijl Drive, Parow ValleyCape TownSouth Africa
| | - Lucia Nkengazong
- Microbiology, Infectious Diseases, and Immunology Laboratory (LAMMII)Centre for Research on Health and Priority Pathologies (CRSPP)Institute of Medical Research and Medicinal Plant Studies (IMPM), Ministry of Scientific Research and InnovationYaoundéCameroon
| | - Henry Ademola Adeola
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
| | - Hlumani Ndlovu
- Department of Integrative Biomedical SciencesUniversity of Cape TownCape TownSouth Africa
| | - Nonhlanhla P Khumalo
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
| | - Ardeshir Bayat
- Wound Healing And Keloid Scar Unit, Medical Research Council (South Africa), Hair and Skin Research Laboratory, Division of Dermatology, Department of MedicineUniversity of Cape TownCape TownSouth Africa
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29
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Chappidi S, Buddolla V, Ankireddy SR, Lakshmi BA, Kim YJ. Recent trends in diabetic wound healing with nanofibrous scaffolds. Eur J Pharmacol 2023; 945:175617. [PMID: 36841285 DOI: 10.1016/j.ejphar.2023.175617] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 02/03/2023] [Accepted: 02/03/2023] [Indexed: 02/26/2023]
Abstract
There is an emphasis in this review on nanofibrous scaffolds (NFSs) in diabetic wound healing, as well as their mechanisms and recent advancements. Diabetes-related complex wounds pose an important problem to humanity, due to the fact that their chronic nature can lead to serious complications including sepsis and amputations. Despite the fact that there are certain therapy options available for diabetic wound healing, these options are either ineffective or intrusive, making clinical intervention difficult. Clinical research is also challenged by the emergence of bacterial resistance to standard antibiotics. However, research into nanotechnology, in particular NFSs, is growing swiftly and has a positive impact on the treatment of diabetic wounds. For instance, SpinCare™, developed by Nanomedic Technologies Ltd, has successfully finished clinical testing and can re-epithelialize second-degree burns and chronic diabetic wounds in 7 and 14 days, respectively. In this review, we discussed homologous studies as well as other recent research studies on diabetic wound healing using NFSs.
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Affiliation(s)
| | - Viswanath Buddolla
- Dr. Buddolla's Institute of Life Sciences, Tirupati, 517503, Andhra Pradesh, India
| | | | - Buddolla Anantha Lakshmi
- Department of Electronic Engineering, Gachon University, 1342 Seongnam-Daero, Seongnam, Gyeonggi-Do, 13120, Republic of Korea.
| | - Young-Joon Kim
- Department of Electronic Engineering, Gachon University, 1342 Seongnam-Daero, Seongnam, Gyeonggi-Do, 13120, Republic of Korea.
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30
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Xiao H, Chen X, Liu X, Wen G, Yu Y. Recent advances in decellularized biomaterials for wound healing. Mater Today Bio 2023; 19:100589. [PMID: 36880081 PMCID: PMC9984902 DOI: 10.1016/j.mtbio.2023.100589] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/07/2023] [Accepted: 02/18/2023] [Indexed: 02/24/2023] Open
Abstract
The skin is one of the most essential organs in the human body, interacting with the external environment and shielding the body from diseases and excessive water loss. Thus, the loss of the integrity of large portions of the skin due to injury and illness may lead to significant disabilities and even death. Decellularized biomaterials derived from the extracellular matrix of tissues and organs are natural biomaterials with large quantities of bioactive macromolecules and peptides, which possess excellent physical structures and sophisticated biomolecules, and thus, promote wound healing and skin regeneration. Here, we highlighted the applications of decellularized materials in wound repair. First, the wound-healing process was reviewed. Second, we elucidated the mechanisms of several extracellular matrix constitutes in facilitating wound healing. Third, the major categories of decellularized materials in the treatment of cutaneous wounds in numerous preclinical models and over decades of clinical practice were elaborated. Finally, we discussed the current hurdles in the field and anticipated the future challenges and novel avenues for research on decellularized biomaterials-based wound treatment.
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Affiliation(s)
- Huimin Xiao
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Xin Chen
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Xuanzhe Liu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Gen Wen
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Yaling Yu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.,Institute of Microsurgery on Extremities, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
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31
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Zhao P, Dang Z, Liu M, Guo D, Luo R, Zhang M, Xie F, Zhang X, Wang Y, Pan S, Ma X. Molecular hydrogen promotes wound healing by inducing early epidermal stem cell proliferation and extracellular matrix deposition. Inflamm Regen 2023; 43:22. [PMID: 36973725 PMCID: PMC10044764 DOI: 10.1186/s41232-023-00271-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/26/2023] [Indexed: 03/29/2023] Open
Abstract
BACKGROUND Despite progress in developing wound care strategies, there is currently no treatment that promotes the self-tissue repair capabilities. H2 has been shown to effectively protect cells and tissues from oxidative and inflammatory damage. While comprehensive effects and how H2 functions in wound healing remains unknown, especially for the link between H2 and extracellular matrix (ECM) deposition and epidermal stem cells (EpSCs) activation. METHODS Here, we established a cutaneous aseptic wound model and applied a high concentration of H2 (66% H2) in a treatment chamber. Molecular mechanisms and the effects of healing were evaluated by gene functional enrichment analysis, digital spatial profiler analysis, blood perfusion/oxygen detection assay, in vitro tube formation assay, enzyme-linked immunosorbent assay, immunofluorescent staining, non-targeted metabonomic analysis, flow cytometry, transmission electron microscope, and live-cell imaging. RESULTS We revealed that a high concentration of H2 (66% H2) greatly increased the healing rate (3 times higher than the control group) on day 11 post-wounding. The effect was not dependent on O2 or anti-reactive oxygen species functions. Histological and cellular experiments proved the fast re-epithelialization in the H2 group. ECM components early (3 days post-wounding) deposition were found in the H2 group of the proximal wound, especially for the dermal col-I, epidermal col-III, and dermis-epidermis-junction col-XVII. H2 accelerated early autologous EpSCs proliferation (1-2 days in advance) and then differentiation into myoepithelial cells. These epidermal myoepithelial cells could further contribute to ECM deposition. Other beneficial outcomes include sustained moist healing, greater vascularization, less T-helper-1 and T-helper-17 cell-related systemic inflammation, and better tissue remodelling. CONCLUSION We have discovered a novel pattern of wound healing induced by molecular hydrogen treatment. This is the first time to reveal the direct link between H2 and ECM deposition and EpSCs activation. These H2-induced multiple advantages in healing may be related to the enhancement of cell viability in various cells and the maintenance of mitochondrial functions at a basic level in the biological processes of life.
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Affiliation(s)
- Pengxiang Zhao
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China
| | - Zheng Dang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China
| | - Mengyu Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China
| | - Dazhi Guo
- Department of Hyperbaric Oxygen, Sixth Medical Center of PLA General Hospital, Beijing, 100048, People's Republic of China
| | - Ruiliu Luo
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China
| | - Mingzi Zhang
- Department of Plastic Surgery, Peking Union Medical College Hospital (Dongdan campus), No. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, 100730, People's Republic of China
| | - Fei Xie
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China
| | - Xujuan Zhang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China
| | - Youbin Wang
- Department of Plastic Surgery, Peking Union Medical College Hospital (Dongdan campus), No. 1 Shuaifuyuan Wangfujing Dongcheng District, Beijing, 100730, People's Republic of China
| | - Shuyi Pan
- Department of Hyperbaric Oxygen, Sixth Medical Center of PLA General Hospital, Beijing, 100048, People's Republic of China
| | - Xuemei Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, People's Republic of China.
- Beijing Molecular Hydrogen Research Center, Beijing, 100124, People's Republic of China.
- Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing, 100124, People's Republic of China.
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32
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Johnson JM, Takebe Y, Zhang G, Ober R, McLuckie A, Niedt GW, Johnson LL. Blocking RAGE improves wound healing in diabetic pigs. Int Wound J 2023; 20:678-686. [PMID: 35945908 PMCID: PMC9927915 DOI: 10.1111/iwj.13909] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/16/2022] [Indexed: 11/29/2022] Open
Abstract
Receptor for Advanced Glycated End-products (RAGE) is highly expressed in diabetes and impairs wound healing. We proposed that administering an antibody that blocks RAGE will hasten the healing of dorsal wounds in diabetic pigs compared with a non-immune IgG. Two purpose-bred diabetic (D) Yucatan minipigs (Sinclair, Auxvasse MO) each underwent 12 2 × 2 cm full thickness dorsal wounds: four wounds received decellularized porcine skin patches (Xylyx Bio, Bklyn NY): four anti-RAGE Ab (CR-3) infused patches, four saline infused patches and four wounds were left open. One pig received anti-RAGE Ab (CR-3) 1 mg/kg IM q 10 days and other received non-immune IgG. Wounds were measured at 2 and 4 weeks followed by euthanasia and wound harvesting. At 2 weeks few of the patches appeared to be incorporated into the wound. By 4 weeks all patches in pigs treated systemically with CR-3 were detached and the wounds almost healed. For all 24 wounds for both pigs regardless of presence of patch or type of patch, the average IgG treated pig wound size at 4 weeks was 69.2 ± 14.6% of initial size and the average CR-3 treated pig wound size was 40.9 ± 11.3% of initial size (P = 0.0002). Quantitative immunohistology showed greater staining for collagen in the CR-3 treated wounds compared with IgG treated. Staining was positive for RAGE, Mac, and IL-6 in the IgG treated wounds and negative in the CR-3 treated wounds. From these pilot experiments, we conclude that a RAGE blocking antibody given parenterally improved wound healing in a diabetic pig while patches were not effective.
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Affiliation(s)
- Jordan M Johnson
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
| | - Yared Takebe
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
| | - Geping Zhang
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
| | - Rebecca Ober
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
| | - Alicia McLuckie
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
| | - George W Niedt
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
| | - Lynne L Johnson
- Departments of Medicine, Pathology, and Veterinary MedicineColumbia UniversityNew York CityNYUSA
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33
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Martins VGFC, Alencar LMR, Souza PFN, Lorentino CMA, Frota HF, dos Santos ALS, Gemini-Piperni S, Morandi V, Rodrigues VG, Pereira JX, Ricci-Junior E, de Barros AODS, Santos-Oliveira R. Wound dressing using graphene quantum dots: a proof of concept. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2023. [DOI: 10.1007/s40005-023-00612-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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34
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Qiu ZK, Zhang MZ, Zhang WC, Li ZJ, Si LB, Long X, Yu NZ, Wang XJ. Role of HIF-1α in pathogenic mechanisms of keloids. J Cosmet Dermatol 2023; 22:1436-1448. [PMID: 36718786 DOI: 10.1111/jocd.15601] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/08/2022] [Accepted: 12/12/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUDS AND OBJECTIVE Keloids are defined as overrepairing products that develop after skin lesions. Keloids are characterized by the proliferation of fibroblasts and the overaccumulation of extracellular matrix components (mainly collagen), leading to a locally hypoxic microenvironment. Hence, this article was aimed to review hypoxia in pathogenesis of keloids. METHODS We reviewed and summarized the relevant published studies. RESULTS Hypoxia results in the accumulation of hypoxia-inducible factor 1α (HIF-1α) in keloids, contributing to overactivation of the fibrotic signaling pathway, epithelial-mesenchymal transition, and changes in metabolism, eventually leading to aggravated fibrosis, infiltrative growth, and radiotherapy resistance. CONCLUSION It is, therefore, essential to understand the role of HIF-1α in the pathogenic mechanisms of keloids in order to develop new therapeutic approaches.
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Affiliation(s)
- Zi-Kai Qiu
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ming-Zi Zhang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wen-Chao Zhang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Jin Li
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lou-Bin Si
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao Long
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Nan-Ze Yu
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao-Jun Wang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Edwin PERG, Kumar S, Roy S, Roy B, Bajpai SK. Anisotropic 3D confinement of MCF-7 cells induces directed cell-migration and viscoelastic anisotropy of cell-membrane. Phys Biol 2023; 20. [DOI: 10.1088/1478-3975/ac9bc1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 10/19/2022] [Indexed: 11/11/2022]
Abstract
Abstract
Tumor-associated collagen signature-3 (TACS-3) is a prognostic indicator for breast cancer survival. It is characterized by highly organized, parallel bundles of collagen fibers oriented perpendicular to the tumor boundary, serving as directional, confining channels for cancer cell invasion. Here we design a TACS-3-mimetic anisotropic, confined collagen I matrix and examine the relation between anisotropy of matrix, directed cellular migration, and anisotropy of cell membrane-the first direct contact between TACS-3 and cell-using Michigan Cancer Foundation-7 (MCF-7) cells as cancer-model. Using unidirectional freezing, we generated ∼50 μm-wide channels filled with collagen I. Optical tweezer (OT) microrheology shows that anisotropic confinement increases collagen viscoelasticity by two orders of magnitude, and the elastic modulus is significantly greater along the direction of anisotropic confinement compared to that along the orthogonal direction, thus establishing matrix anisotropy. Furthermore, MCF-7 cells embedded in anisotropic collagen I, exhibit directionality in cellular morphology and migration. Finally, using customized OT to trap polystyrene probes bound to cell-membrane (and not to ECM) of either free cells or cells under anisotropic confinement, we quantified the effect of matrix anisotropy on membrane viscoelasticity, both in-plane and out-of-plane, vis-à-vis the membrane. Both bulk and viscous modulus of cell-membrane of MCF-7 cells exhibit significant anisotropy under anisotropic confinement. Moreover, the cell membrane of MCF-7 cells under anisotropic confinement is significantly softer (both in-plane and out-of-plane moduli) despite their local environment being five times stiffer than free cells. In order to test if the coupling between anisotropy of extracellular matrix and anisotropy of cell-membrane is regulated by cell-cytoskeleton, actin cytoskeleton was depolymerized for both free and confined cells. Results show that cell membrane viscoelasticity of confined MCF-7 cells is unaffected by actin de-polymerization, in contrast to free cells. Together, these findings suggest that anisotropy of ECM induces directed migration and correlates with anisotropy of cell-membrane viscoelasticity of the MCF-7 cells in an actin-independent manner.
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Accelerated Angiogenesis of Human Umbilical Vein Endothelial Cells Under Negative Pressure Was Associated With the Regulation of Gene Expression Involved in the Proliferation and Migration. Ann Plast Surg 2022; 89:e51-e59. [DOI: 10.1097/sap.0000000000003298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sklenářová R, Akla N, Latorre MJ, Ulrichová J, Franková J. Collagen as a Biomaterial for Skin and Corneal Wound Healing. J Funct Biomater 2022; 13:jfb13040249. [PMID: 36412890 PMCID: PMC9680244 DOI: 10.3390/jfb13040249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022] Open
Abstract
The cornea and the skin are two organs that form the outer barrier of the human body. When either is injured (e.g., from surgery, physical trauma, or chemical burns), wound healing is initiated to restore integrity. Many cells are activated during wound healing. In particular, fibroblasts that are stimulated often transition into repair fibroblasts or myofibroblasts that synthesize extracellular matrix (ECM) components into the wound area. Control of wound ECM deposition is critical, as a disorganized ECM can block restoration of function. One of the most abundant structural proteins in the mammalian ECM is collagen. Collagen type I is the main component in connective tissues. It can be readily obtained and purified, and short analogs have also been developed for tissue engineering applications, including modulating the wound healing response. This review discusses the effect of several current collagen implants on the stimulation of corneal and skin wound healing. These range from collagen sponges and hydrogels to films and membranes.
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Affiliation(s)
- Renáta Sklenářová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University in Olomouc, 775 15 Olomouc, Czech Republic
- Maisonneuve-Rosemont Hospital Research Centre, Montréal, QC H1T 2M4, Canada
| | - Naoufal Akla
- Maisonneuve-Rosemont Hospital Research Centre, Montréal, QC H1T 2M4, Canada
- Department of Ophthalmology, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | | | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University in Olomouc, 775 15 Olomouc, Czech Republic
| | - Jana Franková
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University in Olomouc, 775 15 Olomouc, Czech Republic
- Correspondence:
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Byeon JY, Hwang YS, Choi HJ, Kim JH, Lee DW. A long‐term follow‐up study of diabetic foot ulcer using micronized acellular dermal matrix. Int Wound J 2022; 20:1622-1637. [PMID: 36377547 PMCID: PMC10088852 DOI: 10.1111/iwj.14018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 11/16/2022] Open
Abstract
Treating a diabetic foot ulcer (DFU) extending to the tendon or bone can be a challenge for physicians. Recent studies have shown positive results of micronized acellular dermal matrix (ADM) treatment for treating DFU. However, studies on such ADM with a long-term follow-up are rare. Thus, the objective of this study was to retrospectively analyse patients treated with micronized ADM with a long-term follow-up to assess the effectiveness of the treatment and determine the recurrence rate. The rate of success of complete healing was 62.96% and the time of complete healing was 86.96 days in this study. The recurrence rate of DFUs was 41.17% in the overall group. However, it was only 23.52% in the micronized ADM group. The average duration of recurrence was 720.50 ± 505.12 days. The recurrence rate was 50% in weight bearing areas such as the plantar and heel. It was 12.5% in toes and non-weight bearing areas. In conclusion, micronized ADM can be used to effectively treat DFUs that have invaded ligaments or bones. A close follow-up of weight bearing area wounds will allow us to identify and treat recurrence early.
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Affiliation(s)
- Je Yeon Byeon
- Department of Plastic and Reconstructive Surgery Soonchunhyang University Cheonan Hospital Cheonan South Korea
| | - Yong Seon Hwang
- Department of Plastic and Reconstructive Surgery Soonchunhyang University Cheonan Hospital Cheonan South Korea
| | - Hwan Jun Choi
- Department of Plastic and Reconstructive Surgery Soonchunhyang University Cheonan Hospital Cheonan South Korea
- Institute of Tissue Regeneration, College of Medicine Soonchunhyang University Cheonan South Korea
| | - Jun Hyuk Kim
- Department of Plastic and Reconstructive Surgery Soonchunhyang University Cheonan Hospital Cheonan South Korea
| | - Da Woon Lee
- Department of Plastic and Reconstructive Surgery Soonchunhyang University Cheonan Hospital Cheonan South Korea
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Wound healing in db/db mice with type 2 diabetes using non-contact exposure with an argon non-thermal atmospheric pressure plasma jet device. PLoS One 2022; 17:e0275602. [PMID: 36240146 PMCID: PMC9565687 DOI: 10.1371/journal.pone.0275602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 09/20/2022] [Indexed: 11/19/2022] Open
Abstract
A non-thermal atmospheric pressure plasma jet (APPJ) may stimulate cells and tissues or result in cell death depending on the intensity of plasma at the target; therefore, we herein investigated the effects of non-thermal plasma under non-contact conditions on the healing of full-thickness wounds in diabetic mice (DM+ group) and normal mice (DM- group). A hydrogen peroxide colorimetric method and high performance liquid chromatography showed that APPJ produced low amounts of reactive oxygen and nitrogen species. Ten-week-old male C57BL/6j mice with normal blood glucose levels (DM- group) and 10-week-old male C57BLKS/J Iar-+Leprdb/+Leprdb mice (DM+ group) received two full-thickness cutaneous wounds (4 mm in diameter) on both sides of the dorsum. Wounds were treated with or without the plasma jet or argon gas for 1 minute and were then covered with a hydrocolloid dressing (Hydrocolloid), according to which mice were divided into the following groups: DM+Plasma, DM+Argon, DM+Hydrocolloid, DM-Plasma, DM-Argon, and DM-Hydrocolloid. Exudate weights, wound areas, and wound area ratios were recorded every day. Hematoxylin and eosin staining was performed to assess re-epithelialization and α-SMA immunohistological staining to evaluate the formation of new blood vessels. Non-thermal plasma under non-contact conditions reduced the production of exudate. Exudate weights were smaller in the DM+Plasma group than in the DM+Hydrocolloid and DM+Argon groups. The wound area ratio was smaller for plasma-treated wounds, and was also smaller in the DM+Plasma group than in the DM+Hydrocolloid and DM+Argon groups on days 1-21 (p<0.01). Wound areas were smaller in the DM-Plasma group than in the DM-Argon group until day 14 and differences were significant on days 1-5 (p<0.01). The percentage of re-epithelialization was significantly higher in the DM+Plasma group than in the DM+Argon and DM+Hydrocolloid groups (p<0.01). The number of new blood vessels that had formed by day 7 was significantly higher in the DM+Plasma group than in the DM+Hydrocolloid and DM+Argon groups (p<0.05). These results indicate that treatment with the current non-thermal plasma APPJ device under non-contact conditions accelerated wound healing in diabetic mice.
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Short WD, Olutoye OO, Padon BW, Parikh UM, Colchado D, Vangapandu H, Shams S, Chi T, Jung JP, Balaji S. Advances in non-invasive biosensing measures to monitor wound healing progression. Front Bioeng Biotechnol 2022; 10:952198. [PMID: 36213059 PMCID: PMC9539744 DOI: 10.3389/fbioe.2022.952198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/12/2022] [Indexed: 01/09/2023] Open
Abstract
Impaired wound healing is a significant financial and medical burden. The synthesis and deposition of extracellular matrix (ECM) in a new wound is a dynamic process that is constantly changing and adapting to the biochemical and biomechanical signaling from the extracellular microenvironments of the wound. This drives either a regenerative or fibrotic and scar-forming healing outcome. Disruptions in ECM deposition, structure, and composition lead to impaired healing in diseased states, such as in diabetes. Valid measures of the principal determinants of successful ECM deposition and wound healing include lack of bacterial contamination, good tissue perfusion, and reduced mechanical injury and strain. These measures are used by wound-care providers to intervene upon the healing wound to steer healing toward a more functional phenotype with improved structural integrity and healing outcomes and to prevent adverse wound developments. In this review, we discuss bioengineering advances in 1) non-invasive detection of biologic and physiologic factors of the healing wound, 2) visualizing and modeling the ECM, and 3) computational tools that efficiently evaluate the complex data acquired from the wounds based on basic science, preclinical, translational and clinical studies, that would allow us to prognosticate healing outcomes and intervene effectively. We focus on bioelectronics and biologic interfaces of the sensors and actuators for real time biosensing and actuation of the tissues. We also discuss high-resolution, advanced imaging techniques, which go beyond traditional confocal and fluorescence microscopy to visualize microscopic details of the composition of the wound matrix, linearity of collagen, and live tracking of components within the wound microenvironment. Computational modeling of the wound matrix, including partial differential equation datasets as well as machine learning models that can serve as powerful tools for physicians to guide their decision-making process are discussed.
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Affiliation(s)
- Walker D. Short
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
| | - Oluyinka O. Olutoye
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
| | - Benjamin W. Padon
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
| | - Umang M. Parikh
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
| | - Daniel Colchado
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
| | - Hima Vangapandu
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
| | - Shayan Shams
- Department of Applied Data Science, San Jose State University, San Jose, CA, United States
- School of Biomedical Informatics, University of Texas Health Science Center, Houston, TX, United States
| | - Taiyun Chi
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, United States
| | - Jangwook P. Jung
- Department of Biological Engineering, Louisiana State University, Baton Rouge, LA, United States
| | - Swathi Balaji
- Laboratory for Regenerative Tissue Repair, Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital and Baylor College of Medicine, Houston, TX, United States
- *Correspondence: Swathi Balaji,
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Padhiar C, Muthuchamy M, Ganesan V, Desireddy S, Abhaya M, Siva R, Periyathambi K. Dehydrated Human Amnion/Chorion Membrane Allografts as an Adjunct Wound Healing Therapy in Diabetic Rats. INT J LOW EXTR WOUND 2022:15347346221128651. [PMID: 36131388 DOI: 10.1177/15347346221128651] [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: 11/17/2022]
Abstract
Chronic, non-healing wounds pose a serious public health issue and the need for new treatment methods is paramount. Dehydrated human amnion/chorion membrane has potential wound healing properties, due to the enrichment of growth factors and anti-inflammatory properties. However, its auxiliary advantage on diabetic wounds with demonstrated safety and efficacy in animal models has not been extensively documented. This study aimed at evincing the wound-healing property of dehydrated human amnion chorion membrane in diabetic and non-diabetic rats. An excisional wound model was developed in 36 male Sprague-Dawley rats that were randomly classified into six groups for two experiments. The non-diabetic rat group included non-diabetic control (G1), dHACM treatment (G2), and dHACM dressing + saline-treatment (G3); (n = 6). Similarly, the diabetic group included diabetic control (G4), dHACM treatment (G5), and dHACM dressing + saline-treatment (G6); (n = 6). The results of wound contractility rate, re-epithelialization, grading of granulation tissue, and collagen deposition from histopathological observation demonstrated that in comparison with the other groups (G1, G2, G4, and G5), the animal groups treated with dHACM dressing + saline-treatment (G3 and G6) had superior regenerative effects in excisional wound model. Also, in the animals of G5 and G6 of the diabetic group, there was no statistically significant difference (P > 0.05) in the levels of glucose, urea, creatinine, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphate (ALP), when compared to G4 animals during the experiment. It is evident from this study that dHACM could be applied as a potential wound healing biomaterial, especially in diabetic conditions.
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Affiliation(s)
- Chirayu Padhiar
- 605217LifeCell International Private Limited, Chennai, Tamilnadu, India
- 119670Sathyabama Institute of Science and Technology, Chennai, Tamilnadu, India
| | - Muthuraman Muthuchamy
- 605217LifeCell International Private Limited, Chennai, Tamilnadu, India
- 119670Sathyabama Institute of Science and Technology, Chennai, Tamilnadu, India
| | - Vignesh Ganesan
- 605217LifeCell International Private Limited, Chennai, Tamilnadu, India
| | - Swathi Desireddy
- 605217LifeCell International Private Limited, Chennai, Tamilnadu, India
| | - Mayur Abhaya
- 605217LifeCell International Private Limited, Chennai, Tamilnadu, India
| | - Ramanujam Siva
- Center for Toxicology & Developmental Research, 204733Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamilnadu, India
| | - Kalaivani Periyathambi
- Center for Toxicology & Developmental Research, 204733Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamilnadu, India
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Sivaraman K, Shanthi C. Purified fish skin collagen hydrolysate attenuates TNF-α induced barrier dysfunction in-vitro and DSS induced colitis in-vivo model. Int J Biol Macromol 2022; 222:448-461. [PMID: 36116587 DOI: 10.1016/j.ijbiomac.2022.09.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 09/06/2022] [Accepted: 09/13/2022] [Indexed: 11/05/2022]
Abstract
Inflammatory mediators are key components in establishing pathogenesis in inflammatory bowel disease. Balanced expression of anti-inflammatory and pro-inflammatory cytokines is an important cue in maintaining gut native and adaptive immunity. In the present study, purified hydrolysate fraction of fish skin collagen from Clarias batrachus and Pangasius pangasius was evaluated as a treatment agent against TNF-α induced barrier dysfunction in Caco-2 cell line model and DSS induced colitis in mice model. Cell adhesion on purified hydrolysate fraction coated surfaces was found to be enhanced with increasing concentration in both Clarias batrachus and Pangasius pangasius. Alkaline phosphatase activity was enhanced in a concentration-dependent manner. The paracellular permeability assay demonstrated that Pangasius pangasius purified hydrolysate fraction had countered TNF-α induced barrier dysfunction. Analysis of the tight junction proteins (occludin, zonulae occluden, and claudin) by RT PCR, immunofluorescence, and western blot, further confirmed the effectiveness of Pangasius pangasius purified hydrolysate fraction against TNF-α. The Pangasius pangasius purified hydrolysate fraction was further evaluated for efficacy in DSS-induced colitis mice model. Two concentration of Pangasius pangasius purified hydrolysate was chosen based on in-vitro experiments, 80 μg/kg and 200 μg/kg BW of Balb/C male mice administered through intra-rectal route along with fish skin collagen 80 μg/kg BW. Pangasius pangasius purified hydrolysate fraction treatment improved the clinical signs of colitis such as body weight, rectal bleeding, colon length, and stool consistency caused by DSS administration. Immunofluorescence of colon tissue section showed that Pangasius pangasius purified hydrolysate fraction enhanced the expression of occludin protein. This study hints at the use of Pangasius pangasius purified hydrolysate fraction as a potential nutraceutical or treatment agent in healing ulcers of the mucosa.
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Affiliation(s)
- K Sivaraman
- Department of Biotechnology, School of BioSciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamilnadu, India
| | - C Shanthi
- Department of Biotechnology, School of BioSciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamilnadu, India.
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Porcine Small Intestinal Submucosa Alters the Biochemical Properties of Wound Healing: A Narrative Review. Biomedicines 2022; 10:biomedicines10092213. [PMID: 36140314 PMCID: PMC9496019 DOI: 10.3390/biomedicines10092213] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/29/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
Among the many biological scaffold materials currently available for clinical use, the small intestinal submucosa (SIS) is an effective material for wound healing. SIS contains numerous active forms of extracellular matrix that support angiogenesis, cell migration, and proliferation, providing growth factors involved in signaling for tissue formation and assisting wound healing. SIS not only serves as a bioscaffold for cell migration and differentiation, but also restores the impaired dynamic reciprocity between cells and the extracellular matrix, ultimately driving wound healing. Here, we review the evidence on how SIS can shift the biochemical balance in a wound from chronic to an acute state.
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44
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Gruber SMS, Murab S, Ghosh P, Whitlock PW, Lin CYJ. Direct 3D printing of decellularized matrix embedded composite polycaprolactone scaffolds for cartilage regeneration. BIOMATERIALS ADVANCES 2022; 140:213052. [PMID: 35930819 DOI: 10.1016/j.bioadv.2022.213052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/25/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Treatment options for large osteochondral injuries (OCIs) are limited by donor tissue scarcity, morbidity, and anatomic mismatch. 3D printing technology can produce patient-specific scaffolds to address these large defects. Thermoplastics like polycaprolactone (PCL) offer necessary mechanical properties, but lack bioactivity. We fabricated 3D printed PCL scaffolds embedded with polylactic acid microspheres containing decellularized cartilage matrix (DM). DM incorporation within polylactic acid microspheres prevented its thermal degradation during the 3D printing process. The scaffolds replicated the mechanical properties of native cartilage and demonstrated controlled release of DM proteins. Human mesenchymal stem cells (hMSCs) seeded on the composite scaffolds with DM and cultured in basal media self-assembled into aggregates mimicking mesenchymal condensates during embryonic development. The DM composite scaffolds also induced higher expression of biochemical markers of cartilage development than controls, providing evidence for their translational application in the treatment of OCIs. The present study demonstrates the potential of direct incorporation of DM with thermoplastics for 3D printing of patient-specific scaffolds for osteochondral regeneration.
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Affiliation(s)
- Stacey M S Gruber
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH, USA
| | - Sumit Murab
- BioX Centre, School of Biosciences and Bioengineering, IIT Mandi, Himachal Pradesh, India
| | - Paulomi Ghosh
- Division of Pediatric Orthopaedic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Patrick W Whitlock
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH, USA; Division of Pediatric Orthopaedic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Chia-Ying J Lin
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH, USA; Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, USA.
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Landau Z, Whitacre KL, Leewood C, Hawkins J, Wachuku CD. Utilization of a topical autologous blood clot for treatment of pressure ulcers. Int Wound J 2022; 20:806-812. [PMID: 36054532 PMCID: PMC9927894 DOI: 10.1111/iwj.13927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 11/28/2022] Open
Abstract
Management and treatment of pressure ulcers (PUs) are met with great difficulty due to various factors that cause vulnerability of the soft tissue such as location, limited mobility, increased friction and shearing forces, as well as other comorbidities that may delay or halt wound healing. The topical autologous blood clot therapy (TABCT) is a point-of-care treatment used as a blood clot to assist in recreating and repairing the extracellular matrix (ECM). The mechanism of action consists of reconstruction of the ECM by incorporating into the ulcer, providing protection from further external destruction, while assisting in advancement through the wound healing phases via interaction of necessary growth factors, mediators, and chemokines. This study aims to assess the efficacy of the TABCT in the treatment of PUs in comparison to standard of care (SOC) treatment. Twenty-four patients, 18 years or older, with PUs ranging from stage 1 to 4, were included in this study. TABCT was created by using the patient's own peripheral blood in a point of care setting. Efficacy in percent area reduction (PAR) on weeks 4 and 12 with TABCT over SOC was assessed. Treatment using TABCT in PUs resulted in 77.9% of the patients achieving a 50% PAR on week 4. The mean PAR on week 12 was 96.23% with 45% of the wounds treated with TABCT achieving complete wound closure. TABCT exhibited efficacy in PAR of PUs. In addition, TABCT use prompted granulation tissue formation over vital structures, such as bone, which is often present in later stage PUs. The potential of bringing an affordable, cost-effective, advanced biologic bedside treatment that is efficacious in resolution of these complex wounds has the potential to drastically reduce the burden of treatment on the health system.
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Affiliation(s)
- Zvi Landau
- Medical Nursing and Rehibilitation CenterBeit HadarAshdodIsrael
| | | | - Charles Leewood
- Center for Hyperbarics and Wound CareCandler HospitalSavannahGeorgiaUSA
| | - Jessie Hawkins
- Clinical Research DepartmentFranklin Health Research CenterFranklinTennesseeUSA
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El-Salamouni NS, Gowayed MA, Younis SE, Abdel-Bary A, Kamel MA, Labib GS. Pentoxifylline/Valsartan co-delivery in liposomal gel alters the inflammatory HMGB-1/ TLR pathway and promotes faster healing in burn wounds: A promising repurposed approach. Int J Pharm 2022; 625:122129. [PMID: 36007851 DOI: 10.1016/j.ijpharm.2022.122129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/06/2022] [Accepted: 08/17/2022] [Indexed: 10/15/2022]
Abstract
Burn wounds are one of the most severe complex forms of trauma. Hence, new treatment strategies that facilitate the healing process; reduce the severity and the healing time is the main concern of the health care systems. In this work, pentoxifylline-valsartan, (PTX- VAL), loaded liposomes integrated into gel were designed for the first time as a novel co-delivery carrier for the treatment of burn wounds. The objective of this work was to investigate the ability of the nano-based liposomal system to co-entrap two repurposed drugs; hydrophilic pentoxifylline and lipophilic valsartan for topical treatment of burn wounds. The impact of increasing the phospholipid amount to enhance the co-entrapment of PTX and VAL was investigated and in-vitro evaluation of the prepared formulations was conducted to choose the optimum composition with the highest entrapment of both drugs adopting a simple, reliable derivative spectrophotometric method. Structure elucidation was also performed using a transmission electron microscope. In addition, A simple selected derivative spectrophotometric method was developed for the assay of PTX-VAL novel combination. The proven selectivity, precision and accuracy assured the reliability of this analytical method. Being economic and fast makes routine application of the developed analytical method is recommended in pharmaceutical industry. The selected liposomal formulation integrated into gel matrix (PTX-VAL-LG) showed; nanometric size, acceptable entrapment efficiency of both PTX and VAL as well as sustained release profiles and thus, enhanced action.
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Affiliation(s)
- Noha S El-Salamouni
- Department of Pharmaceutics & Pharmaceutical Technology, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt.
| | - Mennatallah A Gowayed
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt.
| | - Sameh E Younis
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt.
| | - Ahmed Abdel-Bary
- Department of Dermatology, Venereology, Andrology and Dermatopathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Maher A Kamel
- Department of Biochemistry, Medical Research Institute, Alexandria University, Egypt.
| | - Gihan S Labib
- Department of Pharmaceutics & Pharmaceutical Technology, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt.
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Paroli G, Murciano N, Mancini C, Soldaini M, Rijli S, DeSiena G, Bacci S. The role of mast cells in cellular modifications evoked by Exendin-4 in treated wounds: a preclinical study. J Wound Care 2022; 31:701-708. [PMID: 36001707 DOI: 10.12968/jowc.2022.31.8.701] [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: 11/11/2022]
Abstract
OBJECTIVE To assess the response of cellular infiltration in wounds treated with Exendin-4. METHOD In this study, 16 mice were used. On each mouse, two wounds were produced, one above the other, in order to study the effects of the various treatments carried out. The wounds then received an intradermal injection of either saline (20μl; Group 1) or Exendin-4 (Exe4, 62ng; Group 2) in the upper and lower wounds, respectively. The mice were euthanised in order to collect the wounds at time of abrasion (T0), at 48 hours (T1), 96 hours (T2) and 144 hours (T3). The expression of the glucagon-like peptide-1 receptor (GLP-1R) was evaluated by Western blot in wound lysates. Histological and histochemistry methods were applied in cryosections. RESULTS In T2 and T3 treated wounds, the mast cells degranulation index increased while GLP-1R expression, tumour necrosis factor (TNF)-α, or heat shock protein (HSP)47 antigens were detected in their cytoplasm. These cells interacted with dendritic cells, vessels or granulocytes. The density of dendritic cells increased progressively, and intercellular connections were found between these cells and vessels. Among the dendritic cells at T2, only M2 macrophages increased. However, M1 cells expressed transforming growth factor (TGF)-β and both interacted with either fibroblasts or with vessels. The number of plasmacytoid dendritic cells increased and established close contacts with regulatory T cells. CONCLUSION We propose that after treatment with Exe4, early activation of mast cells is critical in wound healing acceleration. This is crucial in understanding the potential effect of this drug for viable clinical therapies. DECLARATION OF INTEREST No potential conflict of interest was reported by the authors.
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Affiliation(s)
- Gaia Paroli
- Department of Biology, Research Unit of Histology and Embriology, University of Florence, 50139 Florence, Italy
| | - Nicoletta Murciano
- Department of Biology, Research Unit of Histology and Embriology, University of Florence, 50139 Florence, Italy
| | - Caterina Mancini
- Department of Biology, Research Unit of Histology and Embriology, University of Florence, 50139 Florence, Italy
| | - Marta Soldaini
- Department of Biology, Research Unit of Histology and Embriology, University of Florence, 50139 Florence, Italy
| | - Sarah Rijli
- Department of Biology, Research Unit of Histology and Embriology, University of Florence, 50139 Florence, Italy
| | - Gaetano DeSiena
- Department of Neurofarba, Section of Pharmacology, University of Florence, 50139 Florence, Italy
| | - Stefano Bacci
- Department of Biology, Research Unit of Histology and Embriology, University of Florence, 50139 Florence, Italy
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Lin Y, Chen Z, Liu Y, Wang J, Lv W, Peng R. Recent Advances in Nano-Formulations for Skin Wound Repair Applications. Drug Des Devel Ther 2022; 16:2707-2728. [PMID: 35996567 PMCID: PMC9392552 DOI: 10.2147/dddt.s375541] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/27/2022] [Indexed: 11/23/2022] Open
Abstract
Skin injuries caused by accidents and acute or chronic diseases place a heavy burden on patients and health care systems. Current treatments mainly depend on preventing infection, debridement, and hemostasis and on supplementing growth factors, but patients will still have scar tissue proliferation or difficulty healing and other problems after treatment. Conventional treatment usually focuses on a single factor or process of wound repair and often ignores the influence of the wound pathological microenvironment on the final healing effect. Therefore, it is of substantial research value to develop multifunctional therapeutic methods that can actively regulate the wound microenvironment and reduce the oxidative stress level at the wound site to promote the repair of skin wounds. In recent years, various bioactive nanomaterials have shown great potential in tissue repair and regeneration due to their properties, including their unique surface interface effect, small size effect, enzyme activity and quantum effect. This review summarizes the mechanisms underlying skin wound repair and the defects in traditional treatment methods. We focus on analyzing the advantages of different types of nanomaterials and comment on their toxicity and side effects when used for skin wound repair.
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Affiliation(s)
- Yue Lin
- Department of Emergency, The Third Affiliated Hospital of Shanghai University & Wenzhou No. 3 Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People’s Hospital, Wenzhou, People’s Republic of China
| | - Zheyan Chen
- Department of Plastic Surgery, The Third Affiliated Hospital of Shanghai University & Wenzhou No. 3 Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People’s Hospital, Wenzhou, People’s Republic of China
| | - Yinai Liu
- Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou, People’s Republic of China
| | - Jiawen Wang
- Department of Plastic Surgery, The Third Affiliated Hospital of Shanghai University & Wenzhou No. 3 Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People’s Hospital, Wenzhou, People’s Republic of China
| | - Wang Lv
- Department of Emergency, The Third Affiliated Hospital of Shanghai University & Wenzhou No. 3 Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People’s Hospital, Wenzhou, People’s Republic of China
| | - Renyi Peng
- Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou, People’s Republic of China
- Correspondence: Renyi Peng, Tel +86 159-5771-6937, Email
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Kandhwal M, Behl T, Singh S, Sharma N, Arora S, Bhatia S, Al-Harrasi A, Sachdeva M, Bungau S. Role of matrix metalloproteinase in wound healing. Am J Transl Res 2022; 14:4391-4405. [PMID: 35958464 PMCID: PMC9360851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Matrix metalloproteinases (MMPs) are a group of endopeptidases that play a vital role in the restoration of damaged skin. Through mediating various cellular events such as angiogenesis and vasodilation, MMPs are very crucial for the mechanism of wound healing. These enzymes are endopeptidases that are reliant on zinc which are concealed through the extracellular matrix (ECM). MMPs have different targets in different phases of wound healing through which they are capable of promoting timely healing in the body. This review discusses all the possible role of MMPs and their inhibitors that are involved during every step of the wound healing process. This review highlights the latest advances in the respective field about the regulation and mediation of MMPs in human skin and how these studies can be applied to other branches of medical sciences as well. Published papers were searched via MEDLINE, PubMed and MDPI from the available peer reviewed journals. Research done in the past suggests that active MMPs are involved in the healing progression of the wounds or they have a positive effect towards healing of wounds. Present studies in the relative field will further enhance the knowledge about enzymes working along with their inhibitors. These studies will help in a way to resolve some of the parameters that are necessary for modulating them either positively or negatively.
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Affiliation(s)
- Mimansa Kandhwal
- Chitkara College of Pharmacy, Chitkara UniversityPunjab 140401, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara UniversityPunjab 140401, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara UniversityPunjab 140401, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara UniversityPunjab 140401, India
| | - Sandeep Arora
- Chitkara College of Pharmacy, Chitkara UniversityPunjab 140401, India
| | - Saurabh Bhatia
- Natural & Medical Sciences Research Centre, University of NizwaNizwa 342001, Oman
- School of Health Science, University of Petroleum and Energy StudiesDehradun 248007, Uttarakhand, India
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Centre, University of NizwaNizwa 342001, Oman
| | - Monika Sachdeva
- Fatima College of Health SciencesAl Ain 50, United Arab Emirates
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of OradeaOradea 410028, Romania
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PATRICK MELONNEY, WAN MOHD ZOHDI WANNAJWA, ABD MUID SUHAILA, OMAR EFFAT. ALPHA-MANGOSTIN (Garcinia mangostana Linn.) AND ITS POTENTIAL APPLICATION IN MITIGATING CHRONIC WOUND HEALING. MALAYSIAN APPLIED BIOLOGY 2022; 51:1-8. [DOI: 10.55230/mabjournal.v51i2.2227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Wound healing is a complex and dynamic cellular process to restore tissue function. Current treatments for chronic wounds especially diabetic ulcers are expensive, with adverse effects. Recently, numerous researchers have focused on the potential effect of natural products on wound healing. One of them is mangosteen (Garcinia mangostana Linn). It is a well-known tropical fruit that is native to Southeast Asia. The active ingredient of mangosteen pericarp contains xanthones that exhibit a wide range of pharmacological activities, including anti-inflammatory and anti-bacterial properties which are the core elements needed in wound healing. Firstly, this review discusses the concepts of abnormal and normal wound healing mechanisms. Then an in depth observation of the pharmacological activities of mangosteen and its derivatives was presented to study their potentially beneficial applications in the treatment of chronic wound healing which is a contemporary medical issue.
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