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Dhar S, Chrisman T, Simman R. Clinical Indications of Cultured Epithelial Autografts. Ann Plast Surg 2023; 91:433-440. [PMID: 37157145 DOI: 10.1097/sap.0000000000003558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
ABSTRACT Cultured epithelial autografts (CEAs) have been used for decades as a treatment for massive burn injuries. Cultured epithelial autografts allow for wounds to heal by taking a small sample and growing a patient's own epithelium in culture to create large, graftable sheets. This technique is especially useful in large wounds where donor sites are limited compared with conventional skin grafting. However, CEAs have a variety of uses in wound healing and reconstruction and have the potential to aid in the closure of several types of defects. Cultured epithelial autografts have shown applicability in large burns, chronic nonhealing wounds, ulcerating wounds of various etiologies, congenital defects, wounds requiring specialized epithelium to replace like by like, and wounds in critically ill patients. Several factors must be considered when using CEAs, such as time, cost, and outcomes. In this article, we detail the various clinical applications of CEAs and how they can be situationally advantageous outside of their original purpose.
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Affiliation(s)
- Sarit Dhar
- From the Department of Surgery, University of Toledo, College of Medicine and Life Science
| | - Timothy Chrisman
- From the Department of Surgery, University of Toledo, College of Medicine and Life Science
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Yan X, Wang C, Ma Y, Wang Y, Song F, Zhong J, Wu X. Development of air-assisted atomization device for the delivery of cells in viscous biological ink prepared with sodium alginate. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2023; 94:044101. [PMID: 38081259 DOI: 10.1063/5.0102035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 03/19/2023] [Indexed: 12/18/2023]
Abstract
Skin wounds, especially large-area skin trauma, would bring great pain and even fatal risk to patients. In recent years, local autologous cell transplantation has shown great potential for wound healing and re-epithelialization. However, when the cell suspension prepared with normal saline is delivered to the wound, due to its low viscosity, it is easy to form big drops in the deposition and lose them from the wound bed, resulting in cell loss and uneven coverage. Here, we developed a novel air-assisted atomization device (AAAD). Under proper atomization parameters, 1% (w/v) sodium alginate (SA) solution carrier could be sprayed uniformly. Compared with normal saline, the run-off of the SA on the surface of porcine skin was greatly reduced. In theory, the spray height of AAAD could be set to achieve the adjustment of a large spray area of 1-12 cm2. In the measurement of droplet velocity and HaCaT cell viability, the spray height of AAAD would affect the droplet settling velocity and then the cell delivery survival rate (CSR). Compared with the spray height of 50 mm, the CSR of 100 mm was significantly higher and could reach 91.09% ± 1.82% (92.82% ± 2.15% in control). For bio-ink prepared with 1% (w/v) SA, the viability remained the same during the 72-h incubation. Overall, the novel AAAD uniformly atomized bio-ink with high viscosity and maintained the viability and proliferation rate during the delivery of living cells. Therefore, AAAD has great potential in cell transplantation therapy, especially for large-area or irregular skin wounds.
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Affiliation(s)
- Xintao Yan
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
| | - Ce Wang
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
| | - Yuting Ma
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
| | - Yao Wang
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
| | - Feifei Song
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
| | - Jinfeng Zhong
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
| | - Xiaodong Wu
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China
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Laurent A, Rey M, Scaletta C, Abdel-Sayed P, Michetti M, Flahaut M, Raffoul W, de Buys Roessingh A, Hirt-Burri N, Applegate LA. Retrospectives on Three Decades of Safe Clinical Experience with Allogeneic Dermal Progenitor Fibroblasts: High Versatility in Topical Cytotherapeutic Care. Pharmaceutics 2023; 15:pharmaceutics15010184. [PMID: 36678813 PMCID: PMC9866885 DOI: 10.3390/pharmaceutics15010184] [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: 09/30/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
Allogeneic dermal progenitor fibroblasts constitute cytotherapeutic contenders for modern cutaneous regenerative medicine. Based on advancements in the relevant scientific, technical, and regulatory fields, translational developments have slowly yet steadily led to the clinical application of such biologicals and derivatives. To set the appropriate general context, the first aim of this study was to provide a current global overview of approved cell and gene therapy products, with an emphasis on cytotherapies for cutaneous application. Notable advances were shown for North America, Europe, Iran, Japan, and Korea. Then, the second and main aim of this study was to perform a retrospective analysis on the various applications of dermal progenitor fibroblasts and derivatives, as clinically used under the Swiss progenitor cell transplantation program for the past three decades. Therein, the focus was set on the extent and versatility of use of the therapies under consideration, their safety parameters, as well as formulation options for topical application. Quantitative and illustrative data were summarized and reported for over 300 patients treated with various cell-based or cell-derived preparations (e.g., progenitor biological bandages or semi-solid emulsions) in Lausanne since 1992. Overall, this study shows the strong current interest in biological-based approaches to cutaneous regenerative medicine from a global developmental perspective, as well as the consolidated local clinical experience gathered with a specific and safe allogeneic cytotherapeutic approach. Taken together, these current and historical elements may serve as tangible working bases for the further optimization of local and modern translational pathways for the provision of topical cytotherapeutic care.
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Affiliation(s)
- Alexis Laurent
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
- Manufacturing Department, TEC-PHARMA SA, CH-1038 Bercher, Switzerland
| | - Marina Rey
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Corinne Scaletta
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Philippe Abdel-Sayed
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
- DLL Bioengineering, Discovery Learning Program, STI School of Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Murielle Michetti
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Marjorie Flahaut
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Wassim Raffoul
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
- Plastic, Reconstructive, and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - Anthony de Buys Roessingh
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
- Children and Adolescent Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - Nathalie Hirt-Burri
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Lee Ann Applegate
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
- Plastic, Reconstructive, and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich, CH-8057 Zurich, Switzerland
- Oxford OSCAR Suzhou Center, Oxford University, Suzhou 215123, China
- Correspondence: ; Tel.: +41-21-314-35-10
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Boyce ST, Kagan RJ. Composition and Performance of Autologous Engineered Skin Substitutes for Repair or Regeneration of Excised, Full-Thickness Burns. J Burn Care Res 2023; 44:S50-S56. [PMID: 35917370 PMCID: PMC10185147 DOI: 10.1093/jbcr/irac107] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 12/27/2022]
Abstract
Prompt and permanent wound closure after burn injuries remains a requirement for patient recovery. Historically, split-thickness skin autograft (STAG) has served as the prevailing standard of care for closure of extensive, deep burns. Because STAG availability may be insufficient in life-threatening burns, alternatives have been evaluated for safety and efficacy of wound closure. Since the 1970s, alternatives consisting of cultured epidermal keratinocytes, and/or acellular dermal substitutes were studied and translated into services and devices that facilitated wound closure, survival, and recovery after major burns. Cultured epithelial autografts (CEA) promoted epidermal closure of wounds but were not stable during long-term recovery. An acellular dermal substitute consisting of collagen and glycosaminoglycans (C-GAG) provided more uniform dermal repair, and reduced needs for epidermal harvesting but was subject to loss from microbial contamination. More recently, an autologous engineered skin substitute (ESS) has been reported and includes a C-GAG polymer populated with fibroblasts and keratinocytes which form basement membrane. ESS can be applied clinically over a vascularized dermal substitute and generates stable wound closure that is smooth, soft, and strong. Despite these advances, no current alternatives for permanent wound closure restore the anatomy and physiology of uninjured skin. Current alternatives act by mechanisms of wound healing, not by developmental biology by which skin forms in utero with pigment, hair, sweat and sebaceous glands, microvasculature, and nerve. Until full-thickness burns are restored with all of the normal structures and functions of uninjured skin, regenerative medicine of skin will remain an ambitious aspiration for future researchers and engineers to achieve.
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Affiliation(s)
- Steven T Boyce
- Department of Surgery, University of Cincinnati, Cincinnati, Ohio, USA
| | - Richard J Kagan
- Department of Surgery, University of Cincinnati, Cincinnati, Ohio, USA
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Jorgensen AM, Mahajan N, Atala A, Murphy SV. Advances in Skin Tissue Engineering and Regenerative Medicine. J Burn Care Res 2023; 44:S33-S41. [PMID: 36567474 PMCID: PMC9790899 DOI: 10.1093/jbcr/irac126] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
There are an estimated 500,000 patients treated with full-thickness wounds in the United States every year. Fire-related burn injuries are among the most common and devastating types of wounds that require advanced clinical treatment. Autologous split-thickness skin grafting is the clinical gold standard for the treatment of large burn wounds. However, skin grafting has several limitations, particularly in large burn wounds, where there may be a limited area of non-wounded skin to use for grafting. Non-cellular dermal substitutes have been developed but have their own challenges; they are expensive to produce, may require immunosuppression depending on design and allogenic cell inclusion. There is a need for more advanced treatments for devastating burns and wounds. This manuscript provides a brief overview of some recent advances in wound care, including the use of advanced biomaterials, cell-based therapies for wound healing, biological skin substitutes, biological scaffolds, spray on skin and skin bioprinting. Finally, we provide insight into the future of wound care and technological areas that need to be addressed to support the development and incorporation of these technologies.
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Affiliation(s)
- Adam M Jorgensen
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina, USA
| | - Naresh Mahajan
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina, USA
| | - Sean V Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina, USA
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Katiyar S, Singh D, Kumari S, Srivastava P, Mishra A. Novel strategies for designing regenerative skin products for accelerated wound healing. 3 Biotech 2022; 12:316. [PMID: 36276437 PMCID: PMC9547767 DOI: 10.1007/s13205-022-03331-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/23/2022] [Indexed: 11/01/2022] Open
Abstract
Healthy skin protects from pathogens, water loss, ultraviolet rays, and also maintains homeostasis conditions along with sensory perceptions in normal circumstances. Skin wound healing mechanism is a multi-phased biodynamic process that ultimately triggers intercellular and intracellular mechanisms. Failure to implement the normal and effective healing process may result in chronic injuries and aberrant scarring. Chronic wounds lead to substantial rising healthcare expenditure, and innovative methods to diagnose and control severe consequences are urgently needed. Skin tissue engineering (STE) has achieved several therapeutic accomplishments during the last few decades, demonstrating tremendous development. The engineered skin substitutes provide instant coverage for extensive wounds and facilitate the prevention of microbial infections and fluid loss; furthermore, they help in fighting inflammation and allow rapid neo-tissue formation. The current review primarily focused on the wound recovery and restoration process and the current conditions of STE with various advancements and complexities associated with different strategies such as cell sources, biopolymers, innovative fabrication techniques, and growth factors delivery systems.
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Affiliation(s)
- Soumya Katiyar
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005 India
| | - Divakar Singh
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005 India
| | - Shikha Kumari
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005 India
| | - Pradeep Srivastava
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005 India
| | - Abha Mishra
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005 India
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Zhang W, Wauthier E, Lanzoni G, Hani H, Yi X, Overi D, Shi L, Simpson S, Allen A, Suitt C, Ezzell JA, Alvaro D, Cardinale V, Gaudio E, Carpino G, Prestwich G, Dominguez-Bendala J, Gerber D, Mathews K, Piedrahita J, Adin C, Sethupathy P, He Z, Reid LM. Patch grafting of organoids of stem/progenitors into solid organs can correct genetic-based disease states. Biomaterials 2022; 288:121647. [PMID: 36030102 PMCID: PMC10495116 DOI: 10.1016/j.biomaterials.2022.121647] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 11/16/2022]
Abstract
Patch grafting, a novel strategy for transplantation of stem/progenitor organoids into porcine livers, has been found successful also for organoid transplantation into other normal or diseased solid organs in pigs and mice. Each organoid contained ∼100 cells comprised of biliary tree stem cells (BTSCs), co-hepato/pancreatic stem/progenitors, and partnered with early lineage stage mesenchymal cells (ELSMCs), angioblasts and precursors to endothelia and stellate cells. Patch grafting enabled transplantation into livers or pancreases of ≥108th (pigs) or ≥106th-7th (mice) organoids/patch. Graft conditions fostered expression of multiple matrix-metalloproteinases (MMPs), especially secretory isoforms, resulting in transient loss of the organ's matrix-dictated histological features, including organ capsules, and correlated with rapid integration within a week of organoids throughout the organs and without emboli or ectopic cell distribution. Secondarily, within another week, there was clearance of graft biomaterials, followed by muted expression of MMPs, restoration of matrix-dictated histology, and maturation of donor cells to functional adult fates. The ability of patch grafts of organoids to rescue hosts from genetic-based disease states was demonstrated with grafts of BTSC/ELSMC organoids on livers, able to rescue NRG/FAH-KO mice from type I tyrosinemia, a disease caused by absence of fumaryl acetoacetate hydrolase. With the same grafts, if on pancreas, they were able to rescue NRG/Akita mice from type I diabetes, caused by a mutation in the insulin 2 gene. The potential of patch grafting for cell therapies for solid organs now requires translational studies to enable its adaptation and uses for clinical programs.
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Affiliation(s)
- Wencheng Zhang
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA; Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200123, China; Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai, 200120, China; Shanghai Engineering Research Center of Stem Cells Translational Medicine, Shanghai, 200335, China.
| | - Eliane Wauthier
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Giacomo Lanzoni
- Diabetes Research Institute, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA.
| | - Homayoun Hani
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Xianwen Yi
- Department of Surgery, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Diletta Overi
- Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185 Roma RM, Italy.
| | - Lei Shi
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Sean Simpson
- Department of Molecular Biomedical Sciences, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA; The Comparative Medicine Institute, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA; Department of Comparative Veterinary Anatomy, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA.
| | - Amanda Allen
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Carolyn Suitt
- Center on Gastrointestinal Disease Biology (CGIBD) Studies, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.
| | - Jennifer Ashley Ezzell
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Domenico Alvaro
- Center on Gastrointestinal Disease Biology (CGIBD) Studies, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.
| | - Vincenzo Cardinale
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185 Roma RM, Italy.
| | - Eugenio Gaudio
- Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185 Roma RM, Italy.
| | - Guido Carpino
- Translational and Precision Medicine, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185 Roma RM, Italy.
| | - Glenn Prestwich
- Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Rome, 00135, Italy.
| | - Juan Dominguez-Bendala
- Diabetes Research Institute, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA.
| | - David Gerber
- Department of Surgery, UNC School of Medicine, Chapel Hill, NC 27599, USA.
| | - Kyle Mathews
- Department of Clinical Sciences, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA.
| | - Jorge Piedrahita
- Department of Molecular Biomedical Sciences, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA; The Comparative Medicine Institute, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA; Department of Comparative Veterinary Anatomy, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA.
| | - Christopher Adin
- Department of Clinical Sciences, North Carolina State College of Veterinary Medicine, Raleigh, NC 27606, USA.
| | - Praveen Sethupathy
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
| | - Zhiying He
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, 200123, China; Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai, 200120, China; Shanghai Engineering Research Center of Stem Cells Translational Medicine, Shanghai, 200335, China.
| | - Lola M Reid
- Department of Cell Biology and Physiology, UNC School of Medicine, Chapel Hill, NC 27599, USA; Cornell University College of Veterinary Medicine, T7 006D Veterinary Research Tower, Box 17, Ithaca, NY 14853, USA.
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Advances in spray products for skin regeneration. Bioact Mater 2022; 16:187-203. [PMID: 35386328 PMCID: PMC8965724 DOI: 10.1016/j.bioactmat.2022.02.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/22/2022] [Accepted: 02/18/2022] [Indexed: 12/25/2022] Open
Abstract
To date, skin wounds are still an issue for healthcare professionals. Although numerous approaches have been developed over the years for skin regeneration, recent advances in regenerative medicine offer very promising strategies for the fabrication of artificial skin substitutes, including 3D bioprinting, electrospinning or spraying, among others. In particular, skin sprays are an innovative technique still under clinical evaluation that show great potential for the delivery of cells and hydrogels to treat acute and chronic wounds. Skin sprays present significant advantages compared to conventional treatments for wound healing, such as the facility of application, the possibility to treat large wound areas, or the homogeneous distribution of the sprayed material. In this article, we review the latest advances in this technology, giving a detailed description of investigational and currently commercially available acellular and cellular skin spray products, used for a variety of diseases and applying different experimental materials. Moreover, as skin sprays products are subjected to different classifications, we also explain the regulatory pathways for their commercialization and include the main clinical trials for different skin diseases and their treatment conditions. Finally, we argue and suggest possible future trends for the biotechnology of skin sprays for a better use in clinical dermatology. Skin sprays represent a promising technique for wound healing applications. Skin sprays can deliver cells and hydrogels with great facility over large wounds. Many skin spray products have been studied, only a few have been commercialized. Numerous clinical trials study spray products for skin diseases like psoriasis. Improved spraying devices should be developed for different materials and cells.
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Bellei B, Migliano E, Picardo M. Research update of adipose tissue-based therapies in regenerative dermatology. Stem Cell Rev Rep 2022; 18:1956-1973. [PMID: 35230644 DOI: 10.1007/s12015-022-10328-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/01/2022] [Indexed: 12/09/2022]
Abstract
Mesenchymal stromal/stem cells (MSCs) have a spontaneous propensity to support tissue homeostasis and regeneration. Among the several sources of MSCs, adipose-derived tissue stem cells (ADSCs) have received major interest due to the higher mesenchymal stem cells concentration, ease, and safety of access. However, since a significant part of the natural capacity of ADSCs to repair damaged tissue is ascribable to their secretory activity that combines mitogenic factors, cytokines, chemokines, lipids, and extracellular matrix components, several studies focused on cell-free strategies. Furthermore, adipose cell-free derivatives are becoming more attractive especially for non-volumizing purposes, such as most dermatological conditions. However, when keratinocytes, fibroblasts, melanocytes, adipocytes, and hair follicle cells might not be locally sourced, graft of materials containing concentrated ADSCs is preferred. The usage of extracellular elements of adipose tissue aims to promote a self-autonomous regenerative microenvironment in the receiving area restoring physiological homeostasis. Hence, ADSCs or their paracrine activity are currently being studied in several dermatological settings including wound healing, skin fibrosis, burn, and aging.The present work analyzing both preclinical and clinical experiences gives an overview of the efficacy of adipose tissue-derivatives like autologous fat, the stromal vascular fraction (SVF), purified ADSCs, secretome and extracellular matrix graft in the field of regenerative medicine for the skin.
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Affiliation(s)
- Barbara Bellei
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy.
| | - Emilia Migliano
- Department of Plastic and Reconstructive Surgery, San Gallicano Dermatological Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy
| | - Mauro Picardo
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy
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10
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Dawson KA, Mickelson MA, Blong AE, L Walton RA. Management of severe burn injuries with novel treatment techniques including maggot debridement and applications of acellular fish skin grafts and autologous skin cell suspension in a dog. J Am Vet Med Assoc 2022; 260:428-435. [PMID: 34843435 DOI: 10.2460/javma.20.10.0579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CASE DESCRIPTION A 3-year-old 27-kg female spayed American Bulldog with severe burn injuries caused by a gasoline can explosion was evaluated. CLINICAL FINDINGS The dog had extensive partial- and full-thickness burns with 50% of total body surface area affected. The burns involved the dorsum extending from the tail to approximately the 10th thoracic vertebra, left pelvic limb (involving 360° burns from the hip region to the tarsus), inguinal area bilaterally, right medial aspect of the thigh, and entire perineal region. Additional burns affected the margins of the pinnae and periocular regions, with severe corneal involvement bilaterally. TREATMENT AND OUTCOME The dog was hospitalized in the hospital's intensive care unit for 78 days. Case management involved provision of aggressive multimodal analgesia, systemic support, and a combination of novel debridement and reconstructive techniques. Debridement was facilitated by traditional surgical techniques in combination with maggot treatment. Reconstructive surgeries involved 6 staged procedures along with the use of novel treatments including applications of widespread acellular fish (cod) skin graft and autologous skin cell suspension. CLINICAL RELEVANCE The outcome for the dog of the present report highlighted the successful use of maggot treatment and applications of acellular cod skin and autologous skin cell suspension along with aggressive systemic management and long-term multimodal analgesia with debridement and wound reconstruction for management of severe burn injuries encompassing 50% of an animal's total body surface area.
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Study on the Effect and Mechanism of Antibacterial Adhesive Hydrogel on Wound Healing. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2021; 2021:8212518. [PMID: 34887942 PMCID: PMC8651344 DOI: 10.1155/2021/8212518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/28/2021] [Accepted: 10/30/2021] [Indexed: 11/21/2022]
Abstract
Bleeding and infection can cause significant increases in mortalities. Hydrogel sealants have attracted extensive attention for their ability to control bleeding. In this study, the adjuvant treatment with antibacterial adhesive hydrogel dressings was applied to patients with deep second-degree burns/scalds. The traditional medical dressing was regarded as control adjuvant treatment. The results indicated that the total positive rate of bacteria in wound secretions and the pain during dressing change in patients who used antibacterial adhesive hydrogel dressings were significantly reduced. The number of fibroblasts and new capillaries in the granulation tissue of the wound increased, and the patient's wound healing is accelerated. The overall clinical effectiveness has been significantly improved. It is proven that the antibacterial adhesive hydrogel dressing has a significant effect on wound healing.
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12
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Chemali M, Laurent A, Scaletta C, Waselle L, Simon JP, Michetti M, Brunet JF, Flahaut M, Hirt-Burri N, Raffoul W, Applegate LA, de Buys Roessingh AS, Abdel-Sayed P. Burn Center Organization and Cellular Therapy Integration: Managing Risks and Costs. J Burn Care Res 2021; 42:911-924. [PMID: 33970273 PMCID: PMC8483250 DOI: 10.1093/jbcr/irab080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The complex management of severe burn victims requires an integrative collaboration of multidisciplinary specialists in order to ensure quality and excellence in healthcare. This multidisciplinary care has quickly led to the integration of cell therapies in clinical care of burn patients. Specific advances in cellular therapy together with medical care have allowed for rapid treatment, shorter residence in hospitals and intensive care units, shorter durations of mechanical ventilation, lower complications and surgery interventions, and decreasing mortality rates. However, naturally fluctuating patient admission rates increase pressure toward optimized resource utilization. Besides, European translational developments of cellular therapies currently face potentially jeopardizing challenges on the policy front. The aim of the present work is to provide key considerations in burn care with focus on architectural and organizational aspects of burn centers, management of cellular therapy products, and guidelines in evolving restrictive regulations relative to standardized cell therapies. Thus, based on our experience, we present herein integrated management of risks and costs for preserving and optimizing clinical care and cellular therapies for patients in dire need.
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Affiliation(s)
- Michèle Chemali
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
- Department of Interdisciplinary Centers, Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Alexis Laurent
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Corinne Scaletta
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Laurent Waselle
- Department of Interdisciplinary Centers, Cell Production Center, Service of Pharmacy, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Jeanne-Pascale Simon
- DIrectorate Department, Unit of Legal Affairs, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Murielle Michetti
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Jean-François Brunet
- Department of Interdisciplinary Centers, Cell Production Center, Service of Pharmacy, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Marjorie Flahaut
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Nathalie Hirt-Burri
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Wassim Raffoul
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
- Department of Interdisciplinary Centers, Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Lee Ann Applegate
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
- Department of Interdisciplinary Centers, Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, Switzerland
- Oxford Suzhou Center for Advanced Research, Science and Technology Co. Ltd., Oxford University, Suzhou, PR China
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Switzerland
| | - Anthony S de Buys Roessingh
- Department of Interdisciplinary Centers, Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, Switzerland
- Women-Mother-Child Department, Children and Adolescent Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
| | - Philippe Abdel-Sayed
- Department of Musculoskeletal Medicine, Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Switzerland
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13
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Motamedi S, Esfandpour A, Babajani A, Jamshidi E, Bahrami S, Niknejad H. The Current Challenges on Spray-Based Cell Delivery to the Skin Wounds. Tissue Eng Part C Methods 2021; 27:543-558. [PMID: 34541897 DOI: 10.1089/ten.tec.2021.0158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cell delivery through spray instruments is a promising and effective method in tissue engineering and regenerative medicine. It is used for treating different acute and chronic wounds, including burns with different etiologies, chronic diabetic or venous wounds, postcancer surgery, and hypopigmentation disorders. Cell spray can decrease the needed donor site area compared with conventional autologous skin grafting. Keratinocytes, fibroblasts, melanocytes, and mesenchymal stem cells are promising cell sources for cell spray procedures. Different spray instruments are designed and utilized to deliver the cells to the intended skin area. In an efficient spray instrument, cell viability and wound coverage are two determining parameters influenced by various physical and biological factors such as air pressure, spraying distance, viscosity of suspension, stiffness of the wound surface, and velocity of impact. Besides, to improve cell delivery by spray instruments, some matrices and growth factors can be added to cell suspensions. This review focuses on the different types of cells and spray instruments used in cell delivery procedures. It also discusses physical and biological parameters associated with cell viability and wound coverage in spray instruments. Moreover, the recent advances in codelivery of cells with biological glues and growth factors, as well as clinical translation of cell spraying, have been reviewed. Impact statement Skin wounds are a group of prevalent injuries that can lead to life-threatening complexities. As a focus of interest, stem cell therapy and spray-based cell delivery have effectively decreased associated morbidity and mortality. This review summarizes a broad scope of recent evidence related to spray-based cell therapy, instruments, and approaches adopted to make the process more efficient in treating skin wounds. An overview including utilized cell types, clinical cases, and current challenges is also provided.
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Affiliation(s)
- Shiva Motamedi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arefeh Esfandpour
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirhesam Babajani
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Jamshidi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in AUVA Research Center, Vienna, Austria
| | - Hassan Niknejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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14
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Zhang W, Lanzoni G, Hani H, Overi D, Cardinale V, Simpson S, Pitman W, Allen A, Yi X, Wang X, Gerber D, Prestwich G, Lozoya O, Gaudio E, Alvaro D, Tokaz D, Dominguez-Bendala J, Adin C, Piedrahita J, Mathews K, Sethupathy P, Carpino G, He Z, Wauthier E, Reid LM. Patch grafting, strategies for transplantation of organoids into solid organs such as liver. Biomaterials 2021; 277:121067. [PMID: 34517276 DOI: 10.1016/j.biomaterials.2021.121067] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 12/28/2022]
Abstract
Epithelial cell therapies have been at an impasse because of inefficient methods of transplantation to solid organs. Patch grafting strategies were established enabling transplantation of ≥107th organoids/patch of porcine GFP+ biliary tree stem/progenitors into livers of wild type hosts. Grafts consisted of organoids embedded in soft (~100 Pa) hyaluronan hydrogels, both prepared in serum-free Kubota's Medium; placed against target sites; covered with a silk backing impregnated with more rigid hyaluronan hydrogels (~700 Pa); and use of the backing to tether grafts with sutures or glue to target sites. Hyaluronan coatings (~200-300 Pa) onto the serosal surface of the graft served to minimize adhesions with neighboring organs. The organ's clearance of hyaluronans enabled restoration of tissue-specific paracrine and systemic signaling, resulting in return of normal hepatic histology, with donor parenchymal cells uniformly integrated amidst host cells and that had differentiated to mature hepatocytes and cholangiocytes. Grafts containing donor mature hepatocytes, partnered with endothelia, and in the same graft biomaterials as for stem/progenitor organoids, did not engraft. Engraftment occurred if porcine liver-derived mesenchymal stem cells (MSCs) were co-transplanted with donor mature cells. RNA-seq analyses revealed that engraftment correlated with expression of matrix-metalloproteinases (MMPs), especially secreted isoforms that were found expressed strongly by organoids, less so by MSCs, and minimally, if at all, by adult cells. Engraftment with patch grafting strategies occurred without evidence of emboli or ectopic cell distribution. It was successful with stem/progenitor organoids or with cells with a source(s) of secreted MMP isoforms and offers significant potential for enabling cell therapies for solid organs.
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Affiliation(s)
- Wencheng Zhang
- Departments of Cell Biology and Physiology, Program in Molecular Biology and Biotechnology, UNC School of Medicine, Chapel Hill, NC, 27599, USA; Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University School of Medicine, 1800 Yuntai Rd, Pudong New Area, Shanghai, 200123, China
| | - Giacomo Lanzoni
- Diabetes Research Institute, U. Miami Leonard M. Miller School of Medicine, 1450 N.W. 10th Avenue, Miami, FL, 33136, USA
| | - Homayoun Hani
- Departments of Cell Biology and Physiology, Program in Molecular Biology and Biotechnology, UNC School of Medicine, Chapel Hill, NC, 27599, USA
| | - Diletta Overi
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University, Piazzale Aldo Moro, 5, 00185, Roma RM, Italy
| | - Vincenzo Cardinale
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University, Piazzale Aldo Moro, 5, 00185, Roma RM, Italy
| | - Sean Simpson
- Department of Molecular Biomedical Sciences, NCSU Colleage of Veterinary Medicine, Raleigh, NC, 27606, USA; The Comparative Medicine Institute, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA; Department of Comparative Veterinary Anatomy, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA
| | - Wendy Pitman
- Department of Biomedical Sciences, Cornell University College of Veterinary Medicine, T7 006D Veterinary Research Tower, Box 17, Ithaca, NY, 14853, USA
| | - Amanda Allen
- Departments of Cell Biology and Physiology, Program in Molecular Biology and Biotechnology, UNC School of Medicine, Chapel Hill, NC, 27599, USA
| | - Xianwen Yi
- Departments of Surgery, UNC School of Medicine, Chapel Hill, NC, 27599, USA
| | - Xicheng Wang
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University School of Medicine, 1800 Yuntai Rd, Pudong New Area, Shanghai, 200123, China
| | - David Gerber
- Departments of Surgery, UNC School of Medicine, Chapel Hill, NC, 27599, USA
| | - Glenn Prestwich
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT, 84112, USA
| | - Oswaldo Lozoya
- Departments of Cell Biology and Physiology, Program in Molecular Biology and Biotechnology, UNC School of Medicine, Chapel Hill, NC, 27599, USA; Department of Biomedical Engineering, UNC School of Medicine, Chapel Hill, NC, 27599, USA.
| | - Eugenio Gaudio
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University, Piazzale Aldo Moro, 5, 00185, Roma RM, Italy
| | - Domenico Alvaro
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University, Piazzale Aldo Moro, 5, 00185, Roma RM, Italy
| | - Debra Tokaz
- Department of Population Health and Pathobiology, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA
| | - Juan Dominguez-Bendala
- Diabetes Research Institute, U. Miami Leonard M. Miller School of Medicine, 1450 N.W. 10th Avenue, Miami, FL, 33136, USA
| | - Christopher Adin
- Department of Clinical Sciences, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA
| | - Jorge Piedrahita
- Department of Molecular Biomedical Sciences, NCSU Colleage of Veterinary Medicine, Raleigh, NC, 27606, USA; The Comparative Medicine Institute, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA; Department of Comparative Veterinary Anatomy, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA
| | - Kyle Mathews
- Department of Clinical Sciences, NCSU College of Veterinary Medicine, Raleigh, NC, 27606, USA
| | - Praveen Sethupathy
- Department of Biomedical Sciences, Cornell University College of Veterinary Medicine, T7 006D Veterinary Research Tower, Box 17, Ithaca, NY, 14853, USA
| | - Guido Carpino
- Department of Movement, Human and Health Sciences, Division of Health Sciences, University of Rome "Foro Italico", Roma, Italy
| | - Zhiying He
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University School of Medicine, 1800 Yuntai Rd, Pudong New Area, Shanghai, 200123, China
| | - Eliane Wauthier
- Departments of Cell Biology and Physiology, Program in Molecular Biology and Biotechnology, UNC School of Medicine, Chapel Hill, NC, 27599, USA
| | - Lola M Reid
- Departments of Cell Biology and Physiology, Program in Molecular Biology and Biotechnology, UNC School of Medicine, Chapel Hill, NC, 27599, USA.
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15
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Zhang L, Yan X, An L, Wang M, Xu X, Ma Z, Nie M, Du F, Zhang J, Yu S. Novel pneumatically assisted atomization device for living cell delivery: application of sprayed mesenchymal stem cells for skin regeneration. Biodes Manuf 2021. [DOI: 10.1007/s42242-021-00144-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Stem cell sprays for neurological injuries: a perspective. Emerg Top Life Sci 2021; 5:519-522. [PMID: 34096585 DOI: 10.1042/etls20210113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/11/2021] [Accepted: 05/19/2021] [Indexed: 11/17/2022]
Abstract
Injuries to the brain and spinal cord have major clinical consequences with high costs for healthcare systems. Neural cell transplantation therapies have significant translational potential to promote regeneration post-injury with clinical trials commencing for various pathologies. However, there are challenges associated with current clinical approaches used for systemic or direct delivery of transplant cells to neural tissue in regenerative applications. These include risks associated with surgical microinjection into neural tissue (e.g. haemorrhage, cell clumping) and high cell loss due to systemic clearance or with cell passage through fine gauge needles into densely packed neural tissue. This article presents lines of evidence supporting the concept that cell spray delivery technology can offer significant translational benefits for neural transplantation therapy, versus current cell delivery methods. Potential benefits include rapid/homogenous cell delivery, release over large surface areas, minimal invasiveness, compatibility with neurosurgical procedures in acute injury, no predictable clinical complications and the capacity to combine cell therapies with drug/biomolecule delivery. Accordingly, we consider that the development of cell spray delivery technology represents a key goal to develop advanced cell therapies for regenerative neurology.
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17
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Chen J, Wang H, Mei L, Wang B, Huang Y, Quan G, Lu C, Peng T, Pan X, Wu C. A pirfenidone loaded spray dressing based on lyotropic liquid crystals for deep partial thickness burn treatment: healing promotion and scar prophylaxis. J Mater Chem B 2021; 8:2573-2588. [PMID: 32147675 DOI: 10.1039/c9tb02929j] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A deep partial thickness (DPT) burn injury refers to burn damage involving the epidermis and major dermis, whose prognosis depends greatly on wound management. Lack of effective management can lead to an elongated healing process and aggravated scar formation, which can severely disturb patients, both physically and mentally. A dressing with good water absorption and moderate mechanical properties is crucial for healing promotion, and the prevention of scar formation is highly desirable. In this project, a hyaluronic acid combined lyotropic liquid crystal based spray dressing (HLCSD) loaded with the anti-fibrotic drug pirfenidone (PFD) has been designed. HLCSD is expected to achieve the goals of both wound healing promotion and scar prophylaxis. Its water absorption capacity, mechanical properties, drug release behavior and phase transition are fully evaluated. HLCSD possesses low viscosity for spray administration and high levels of water absorption for exudate absorption. An in situ gel composed of self-assembled lattice nanostructures provides excellent mechanical protection to promote the healing process and steady PFD release to exert a scar prophylaxis effect. The benefit of HLCSD on the wound healing rate is verified in vivo. In the DPT burn wound model we established, HLCSD also exhibits excellent healing promotion effects, and PFD-loaded HLCSD shows scar prophylaxis effects and displays an ideal prognosis, with skin as smooth as healthy skin. The healing promotion of HLCSD is considered to be related to the alleviation of inflammation, with an obviously shortened inflammation phase, with contributions from water management, mechanical protection and anti-inflammation by HLCSD. The scar prophylaxis of PFD-loaded HLCSD is proven to be related to the regulation of collagen synthesis and degradation, involving key cytokines like TGF-β and MMP-1. Taken together, the PFD-loaded HLCSD with healing promotion and scar prophylaxis offers significant promise as a spray dressing for DPT burn injuries.
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Affiliation(s)
- Jintian Chen
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
| | - Hui Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
| | - Liling Mei
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
| | - Bei Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
| | - Ying Huang
- School of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
| | - Guilan Quan
- School of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
| | - Chao Lu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
| | - Tingting Peng
- School of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China.
| | - Chuanbin Wu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, P. R. China. and School of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
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18
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Al-Dourobi K, Laurent A, Deghayli L, Flahaut M, Abdel-Sayed P, Scaletta C, Michetti M, Waselle L, Simon JP, El Ezzi O, Raffoul W, Applegate LA, Hirt-Burri N, Roessingh ASDB. Retrospective Evaluation of Progenitor Biological Bandage Use: A Complementary and Safe Therapeutic Management Option for Prevention of Hypertrophic Scarring in Pediatric Burn Care. Pharmaceuticals (Basel) 2021; 14:201. [PMID: 33671009 PMCID: PMC7997469 DOI: 10.3390/ph14030201] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 12/11/2022] Open
Abstract
Progenitor Biological Bandages (PBB) have been continuously applied clinically in the Lausanne Burn Center for over two decades. Vast translational experience and hindsight have been gathered, specifically for cutaneous healing promotion of donor-site grafts and second-degree pediatric burns. PBBs constitute combined Advanced Therapy Medicinal Products, containing viable cultured allogeneic fetal dermal progenitor fibroblasts. Such constructs may partly favor repair and regeneration of functional cutaneous tissues by releasing cytokines and growth factors, potentially negating the need for subsequent skin grafting, while reducing the formation of hypertrophic scar tissues. This retrospective case-control study (2010-2018) of pediatric second-degree burn patients comprehensively compared two initial wound treatment options (i.e., PBBs versus Aquacel® Ag, applied during ten to twelve days post-trauma). Results confirmed clinical safety of PBBs with regard to morbidity, mortality, and overall complications. No difference was detected between groups for length of hospitalization or initial relative burn surface decreasing rates. Nevertheless, a trend was observed in younger patients treated with PBBs, requiring fewer corrective interventions or subsequent skin grafting. Importantly, significant improvements were observed in the PBB group regarding hypertrophic scarring (i.e., reduced number of scar complications and related corrective interventions). Such results establish evidence of clinical benefits yielded by the Swiss fetal progenitor cell transplantation program and favor further implementation of specific cell therapies in highly specialized regenerative medicine.
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Affiliation(s)
- Karim Al-Dourobi
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
| | - Alexis Laurent
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Lina Deghayli
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
| | - Marjorie Flahaut
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Philippe Abdel-Sayed
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Corinne Scaletta
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Murielle Michetti
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Laurent Waselle
- Cell Production Center, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland;
| | - Jeanne-Pascale Simon
- Unit of Legal Affairs, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
| | - Oumama El Ezzi
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
- Children and Adolescent Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - Wassim Raffoul
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
| | - Lee Ann Applegate
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
- Oxford Suzhou Center for Advanced Research, Science and Technology Co., Ltd., Oxford University, Suzhou 215000, China
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich, CH-8057 Zurich, Switzerland
| | - Nathalie Hirt-Burri
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.); (A.L.); (L.D.); (M.F.); (P.A.-S.); (C.S.); (M.M.); (W.R.); (L.A.A.); (N.H.-B.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Anthony S de Buys Roessingh
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
- Children and Adolescent Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
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19
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Rios CI, DiCarlo AL, Marzella L. Cutaneous Radiation Injuries: Models, Assessment and Treatments. Radiat Res 2020; 194:310-313. [PMID: 32857847 DOI: 10.1667/rade-20-00132.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/11/2020] [Indexed: 11/03/2022]
Affiliation(s)
- Carmen I Rios
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Andrea L DiCarlo
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Libero Marzella
- Division of Imaging and Radiation Medicine, Center for Drug Evaluation and Research, United States Food and Drug Administration (FDA), White Oak, Maryland
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20
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Laurent A, Hirt-Burri N, Scaletta C, Michetti M, de Buys Roessingh AS, Raffoul W, Applegate LA. Holistic Approach of Swiss Fetal Progenitor Cell Banking: Optimizing Safe and Sustainable Substrates for Regenerative Medicine and Biotechnology. Front Bioeng Biotechnol 2020; 8:557758. [PMID: 33195124 PMCID: PMC7644790 DOI: 10.3389/fbioe.2020.557758] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/21/2020] [Indexed: 12/17/2022] Open
Abstract
Safety, quality, and regulatory-driven iterative optimization of therapeutic cell source selection has constituted the core developmental bedrock for primary fetal progenitor cell (FPC) therapy in Switzerland throughout three decades. Customized Fetal Transplantation Programs were pragmatically devised as straightforward workflows for tissue procurement, traceability maximization, safety, consistency, and robustness of cultured progeny cellular materials. Whole-cell bioprocessing standardization has provided plethoric insights into the adequate conjugation of modern biotechnological advances with current restraining legislative, ethical, and regulatory frameworks. Pioneer translational advances in cutaneous and musculoskeletal regenerative medicine continuously demonstrate the therapeutic potential of FPCs. Extensive technical and clinical hindsight was gathered by managing pediatric burns and geriatric ulcers in Switzerland. Concomitant industrial transposition of dermal FPC banking, following good manufacturing practices, demonstrated the extensive potential of their therapeutic value. Furthermore, in extenso, exponential revalorization of Swiss FPC technology may be achieved via the renewal of integrative model frameworks. Consideration of both longitudinal and transversal aspects of simultaneous fetal tissue differential processing allows for a better understanding of the quasi-infinite expansion potential within multi-tiered primary FPC banking. Multiple fetal tissues (e.g., skin, cartilage, tendon, muscle, bone, lung) may be simultaneously harvested and processed for adherent cell cultures, establishing a unique model for sustainable therapeutic cellular material supply chains. Here, we integrated fundamental, preclinical, clinical, and industrial developments embodying the scientific advances supported by Swiss FPC banking and we focused on advances made to date for FPCs that may be derived from a single organ donation. A renewed model of single organ donation bioprocessing is proposed, achieving sustained standards and potential production of billions of affordable and efficient therapeutic doses. Thereby, the aim is to validate the core therapeutic value proposition, to increase awareness and use of standardized protocols for translational regenerative medicine, potentially impacting millions of patients suffering from cutaneous and musculoskeletal diseases. Alternative applications of FPC banking include biopharmaceutical therapeutic product manufacturing, thereby indirectly and synergistically enhancing the power of modern therapeutic armamentariums. It is hypothesized that a single qualifying fetal organ donation is sufficient to sustain decades of scientific, medical, and industrial developments, as technological optimization and standardization enable high efficiency.
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Affiliation(s)
- Alexis Laurent
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, Épalinges, Switzerland
- Tec-Pharma SA, Bercher, Switzerland
- LAM Biotechnologies SA, Épalinges, Switzerland
| | - Nathalie Hirt-Burri
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, Épalinges, Switzerland
| | - Corinne Scaletta
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, Épalinges, Switzerland
| | - Murielle Michetti
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, Épalinges, Switzerland
| | - Anthony S. de Buys Roessingh
- Children and Adolescent Surgery Service, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Wassim Raffoul
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Lee Ann Applegate
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, Épalinges, Switzerland
- Oxford Suzhou Center for Advanced Research, Science and Technology Co., Ltd., Oxford University, Suzhou, China
- Competence Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Zurich, Switzerland
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21
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Mota C, Camarero-Espinosa S, Baker MB, Wieringa P, Moroni L. Bioprinting: From Tissue and Organ Development to in Vitro Models. Chem Rev 2020; 120:10547-10607. [PMID: 32407108 PMCID: PMC7564098 DOI: 10.1021/acs.chemrev.9b00789] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Indexed: 02/08/2023]
Abstract
Bioprinting techniques have been flourishing in the field of biofabrication with pronounced and exponential developments in the past years. Novel biomaterial inks used for the formation of bioinks have been developed, allowing the manufacturing of in vitro models and implants tested preclinically with a certain degree of success. Furthermore, incredible advances in cell biology, namely, in pluripotent stem cells, have also contributed to the latest milestones where more relevant tissues or organ-like constructs with a certain degree of functionality can already be obtained. These incredible strides have been possible with a multitude of multidisciplinary teams around the world, working to make bioprinted tissues and organs more relevant and functional. Yet, there is still a long way to go until these biofabricated constructs will be able to reach the clinics. In this review, we summarize the main bioprinting activities linking them to tissue and organ development and physiology. Most bioprinting approaches focus on mimicking fully matured tissues. Future bioprinting strategies might pursue earlier developmental stages of tissues and organs. The continuous convergence of the experts in the fields of material sciences, cell biology, engineering, and many other disciplines will gradually allow us to overcome the barriers identified on the demanding path toward manufacturing and adoption of tissue and organ replacements.
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Affiliation(s)
- Carlos Mota
- Department of Complex Tissue Regeneration,
MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Sandra Camarero-Espinosa
- Department of Complex Tissue Regeneration,
MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Matthew B. Baker
- Department of Complex Tissue Regeneration,
MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Paul Wieringa
- Department of Complex Tissue Regeneration,
MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue Regeneration,
MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
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22
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DiCarlo AL, Bandremer AC, Hollingsworth BA, Kasim S, Laniyonu A, Todd NF, Wang SJ, Wertheimer ER, Rios CI. Cutaneous Radiation Injuries: Models, Assessment and Treatments. Radiat Res 2020; 194:315-344. [PMID: 32857831 PMCID: PMC7525796 DOI: 10.1667/rade-20-00120.1] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/11/2020] [Indexed: 12/16/2022]
Abstract
Many cases of human exposures to high-dose radiation have been documented, including individuals exposed during the detonation of atomic bombs in Hiroshima and Nagasaki, nuclear power plant disasters (e.g., Chernobyl), as well as industrial and medical accidents. For many of these exposures, injuries to the skin have been present and have played a significant role in the progression of the injuries and survivability from the radiation exposure. There are also instances of radiation-induced skin complications in routine clinical radiotherapy and radiation diagnostic imaging procedures. In response to the threat of a radiological or nuclear mass casualty incident, the U.S. Department of Health and Human Services tasked the National Institute of Allergy and Infectious Diseases (NIAID) with identifying and funding early- to mid-stage medical countermeasure (MCM) development to treat radiation-induced injuries, including those to the skin. To appropriately assess the severity of radiation-induced skin injuries and determine efficacy of different approaches to mitigate/treat them, it is necessary to develop animal models that appropriately simulate what is seen in humans who have been exposed. In addition, it is important to understand the techniques that are used in other clinical indications (e.g., thermal burns, diabetic ulcers, etc.) to accurately assess the extent of skin injury and progression of healing. For these reasons, the NIAID partnered with two other U.S. Government funding and regulatory agencies, the Biomedical Advanced Research and Development Authority (BARDA) and the Food and Drug Administration (FDA), to identify state-of-the-art methods in assessment of skin injuries, explore animal models to better understand radiation-induced cutaneous damage and investigate treatment approaches. A two-day workshop was convened in May 2019 highlighting talks from 28 subject matter experts across five scientific sessions. This report provides an overview of information that was presented and the subsequent guided discussions.
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Affiliation(s)
- Andrea L. DiCarlo
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Aaron C. Bandremer
- Biomedical Advanced Research and Development Authority (BARDA), Department of Health and Human Services (HHS), Washington, DC
| | - Brynn A. Hollingsworth
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
| | - Suhail Kasim
- U.S. Food and Drug Administration (FDA), White Oak, Maryland
| | | | - Nushin F. Todd
- U.S. Food and Drug Administration (FDA), White Oak, Maryland
| | - Sue-Jane Wang
- U.S. Food and Drug Administration (FDA), White Oak, Maryland
| | | | - Carmen I. Rios
- Radiation and Nuclear Countermeasures Program (RNCP), Division of Allergy, Immunology and Transplantation (DAIT), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Rockville, Maryland
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23
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Dahmardehei M, Vaghardoost R, Saboury M, Zarei H, Saboury S, Molaei M, Seyyedi J, Maleknejad A. Comparison of Modified Meek Technique with Standard Mesh Method in Patients with Third Degree Burns. World J Plast Surg 2020; 9:267-273. [PMID: 33330002 PMCID: PMC7734932 DOI: 10.29252/wjps.9.3.267] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Covering burn wounds, especially high surface area burns has been always a challenge for surgeons. The Meek technique has been introduced to increase the covering area. There is paucity of clinical trials comparing the Meek technique and mesh in the same individuals to assess it efficacy. METHODS In a case-control study, 20 patients with grade III burns who underwent the Meek technique and mesh in different areas/limbs were enrolled. Expansion rate, re-epithelization, operation time, wound infection, graft failure, etc. were compared between the two groups. RESULTS Among patients, 18 were males and 2 were females. The mean of total body surface area (TBSA) was 36.9±16.6%. Mean time of re-epithelialization in the Meek group was 2.8±2.5 months and in the mesh group was 5.0±2.1 months (p=0.01). Operation time was shorter in modified Meek technique (p=0.04). Expansion ratio was higher in modified Meek technique (p=0.04). Local wound infection rates were slightly different without a statistically significant difference. CONCLUSION Meek technique provided higher surface area coverage in comparison to mesh; in addition to faster re-epithelization. Therefore, it is recommended to consider the Meek technique as a routine procedure, especially those with high surface area burns.
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Affiliation(s)
| | - Reza Vaghardoost
- Department of Plastic and Reconstructive Surgery, St. Fatima Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdy Saboury
- Department of Plastic and Reconstructive Surgery, St. Fatima Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamze Zarei
- Department of Plastic and Reconstructive Surgery, Imam Ali Hospital, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Shahriar Saboury
- Department of Surgery, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Mehdi Molaei
- Burn Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Jalal Seyyedi
- Burn Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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24
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Prendergast ME, Burdick JA. Recent Advances in Enabling Technologies in 3D Printing for Precision Medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1902516. [PMID: 31512289 DOI: 10.1002/adma.201902516] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/28/2019] [Indexed: 06/10/2023]
Abstract
Advances in areas such as data analytics, genomics, and imaging have revealed individual patient complexities and exposed the inherent limitations of generic therapies for patient treatment. These observations have also fueled the development of precision medicine approaches, where therapies are tailored for the individual rather than the broad patient population. 3D printing is a field that intersects with precision medicine through the design of precision implants with patient-directed shapes, structures, and materials or for the development of patient-specific in vitro models that can be used for screening precision therapeutics. Toward their success, advances in 3D printing and biofabrication technologies are needed with enhanced resolution, complexity, reproducibility, and speed and that encompass a broad range of cells and materials. The overall goal of this progress report is to highlight recent advances in 3D printing technologies that are helping to enable advances important in precision medicine.
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Affiliation(s)
- Margaret E Prendergast
- Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, 19104, PA, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Philadelphia, 19104, PA, USA
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25
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Gerlach JC, Johnen C, Hartmann B, Plettig J, Bräutigam K, Toman N, Esteban-Vives R, Hubald S. An in vitro feasibility investigation considering primary human melanocytes for spray- grafting of freshly isolated autologous skin cells for burn treatment and a clinical case report. Surg Case Rep 2019. [DOI: 10.31487/j.scr.2019.03.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A skin cell-spray grafting technique that enables the on-site application of freshly isolated autologous single cell suspensions was already applied in many cases on caucasian patients with low skin coloration. Our project hypothesis is that these suspensions contain keratinocytes and vital melanocytes, that are of particular interest for the treatment of patients of darker skin color. To test this, we applied an in vitro model, wherein the feasibility of i) isolating and ii) spraying of freshly isolated autologous melanocyte-keratinocyte cell suspensions was investigated. Primary human epidermal keratinocytes (HEKs) and melanocytes (MCs) were isolated from skin biopsies (n=8). Biochemical parameter, cell counts, cell morphology, growth behavior and immunofluorescence results were compared in two groups using MC cultures and co-cultures of MCs with HEKs. Case information on using the method clinically with one patient is included. The sprayed mixed cell suspensions proliferated in all groups without measurable loss of viability, and MCs exhibited a regular cell morphology in monoculture up to passage 4°. The sprayed MCs and HEKs demonstrated in vitro glucose and lactate metabolism that was comparable to the pipetted controls. In co-culture, well distributed CK14+ HEKs and NKI/beteb+ MCs could be demonstrated, which interacted in the in vitro model. The ratio of HEKs : MCs in our primary cultures were microscopically counted (n=8 each) as mean +/- SD 1,211,000 (+/- 574,343) HEK : 99,625 (+/- 59,025) MC; i.e., a ratio of approx. 12 : 1. Using the isolation method clinically for a patient with dark skin coloration after suffering severe second-degree burns shows a satisfying re-pigmentation of the resulting wound post healing. Freshly isolated spray-on melanocyte/keratinocyte suspensions provide for a considerable amount of viable HEKs and MCs. Using MCs in spray-grafting suspensions could represent a promising approach for treating severe partial-thickness burns and innovative therapy developments that also aim to address cosmetic aspects.
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26
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Shpichka A, Butnaru D, Bezrukov EA, Sukhanov RB, Atala A, Burdukovskii V, Zhang Y, Timashev P. Skin tissue regeneration for burn injury. Stem Cell Res Ther 2019; 10:94. [PMID: 30876456 PMCID: PMC6419807 DOI: 10.1186/s13287-019-1203-3] [Citation(s) in RCA: 187] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The skin is the largest organ of the body, which meets the environment most directly. Thus, the skin is vulnerable to various damages, particularly burn injury. Skin wound healing is a serious interaction between cell types, cytokines, mediators, the neurovascular system, and matrix remodeling. Tissue regeneration technology remarkably enhances skin repair via re-epidermalization, epidermal-stromal cell interactions, angiogenesis, and inhabitation of hypertrophic scars and keloids. The success rates of skin healing for burn injuries have significantly increased with the use of various skin substitutes. In this review, we discuss skin replacement with cells, growth factors, scaffolds, or cell-seeded scaffolds for skin tissue reconstruction and also compare the high efficacy and cost-effectiveness of each therapy. We describe the essentials, achievements, and challenges of cell-based therapy in reducing scar formation and improving burn injury treatment.
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Affiliation(s)
- Anastasia Shpichka
- Institute for Regenerative Medicine, Sechenov University, Moscow, Russia
| | - Denis Butnaru
- Sechenov Biomedical Science and Technology Park, Sechenov University, Moscow, Russia
| | | | | | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC USA
| | - Vitaliy Burdukovskii
- Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, Ulan-Ude, Russia
| | - Yuanyuan Zhang
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC USA
| | - Peter Timashev
- Institute for Regenerative Medicine, Sechenov University, Moscow, Russia
- Research Center “Crystallography and Photonics” RAS, Institute of Photonic Technologies, Troitsk, Moscow, Russia
- Departments of Polymers and Composites, N.N. Semenov Institute of Chemical Physics, Moscow, Russia
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