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Mazio C, Mavaro I, Palladino A, Casale C, Urciuolo F, Banfi A, D'Angelo L, Netti PA, de Girolamo P, Imparato G, Attanasio C. Rapid innervation and physiological epidermal regeneration by bioengineered dermis implanted in mouse. Mater Today Bio 2024; 25:100949. [PMID: 38298559 PMCID: PMC10827562 DOI: 10.1016/j.mtbio.2024.100949] [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: 09/25/2023] [Revised: 01/02/2024] [Accepted: 01/06/2024] [Indexed: 02/02/2024] Open
Abstract
Tissue-engineered skin substitutes are promising tools to cover large and deep skin defects. However, the lack of a synergic and fast regeneration of the vascular network, nerves, and skin appendages limits complete skin healing and impairs functional recovery. It has been highlighted that an ideal skin substitute should mimic the structure of the native tissue to enhance clinical effectiveness. Here, we produced a pre-vascularized dermis (PVD) comprised of fibroblasts embedded in their own extracellular matrix (ECM) and a capillary-like network. Upon implantation in a mouse full-thickness skin defect model, we observed a very early innervation of the graft in 2 weeks. In addition, mouse capillaries and complete epithelialization were detectable as early as 1 week after implantation and, skin appendages developed in 2 weeks. These anatomical features underlie the interaction with the skin nerves, thus providing a further cue for reinnervation guidance. Further, the graft displays mechanical properties, collagen density, and assembly features very similar to the host tissue. Taken together our data show that the pre-existing ECM components of the PVD, physiologically organized and assembled similarly to the native tissue, support a rapid regeneration of dermal tissue. Therefore, our results suggest a promising potential for PVD in skin regeneration.
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Affiliation(s)
- Claudia Mazio
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
| | - Isabella Mavaro
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Antonio Palladino
- University of Naples Federico II, Department of Agricultural Sciences, Italy
| | - Costantino Casale
- University of Naples Federico II, Interdisciplinary Research Centre on Biomaterials (CRIB), Italy
| | - Francesco Urciuolo
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, Italy
| | - Andrea Banfi
- Basel University Hospital and University of Basel, Department of Biomedicine, Switzerland
| | - Livia D'Angelo
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Paolo A. Netti
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
- University of Naples Federico II, Interdisciplinary Research Centre on Biomaterials (CRIB), Italy
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, Italy
| | - Paolo de Girolamo
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Giorgia Imparato
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
| | - Chiara Attanasio
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
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2
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Simon L, Bellard E, Jouanmiqueou B, Lapinte V, Marcotte N, Devoisselle J, Lamaze C, Rols M, Golzio M, Begu S. Interactions of amphiphilic polyoxazolines formulated or not in lipid nanocapsules with biological systems: Evaluation from membrane models up to in vivo mice epidermis. Eur J Pharm Biopharm 2022; 180:308-318. [DOI: 10.1016/j.ejpb.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 08/29/2022] [Accepted: 10/12/2022] [Indexed: 11/04/2022]
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3
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Integrin-specific hydrogels for growth factor-free vasculogenesis. NPJ Regen Med 2022; 7:57. [PMID: 36167724 PMCID: PMC9515164 DOI: 10.1038/s41536-022-00253-4] [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: 02/07/2022] [Accepted: 09/12/2022] [Indexed: 11/30/2022] Open
Abstract
Integrin-binding biomaterials have been extensively evaluated for their capacity to enable de novo formation of capillary-like structures/vessels, ultimately supporting neovascularization in vivo. Yet, the role of integrins as vascular initiators in engineered materials is still not well understood. Here, we show that αvβ3 integrin-specific 3D matrices were able to retain PECAM1+ cells from the stromal vascular fraction (SVF) of adipose tissue, triggering vasculogenesis in vitro in the absence of extrinsic growth factors. Our results suggest that αvβ3-RGD-driven signaling in the formation of capillary-like structures prevents the activation of the caspase 8 pathway and activates the FAK/paxillin pathway, both responsible for endothelial cells (ECs) survival and migration. We also show that prevascularized αvβ3 integrin-specific constructs inosculate with the host vascular system fostering in vivo neovascularization. Overall, this work demonstrates the ability of the biomaterial to trigger vasculogenesis in an integrin-specific manner, by activating essential pathways for EC survival and migration within a self-regulatory growth factor microenvironment. This strategy represents an improvement to current vascularization routes for Tissue Engineering constructs, potentially enhancing their clinical applicability.
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4
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Sharma S, Basu B. Biomaterials assisted reconstructive urology: The pursuit of an implantable bioengineered neo-urinary bladder. Biomaterials 2021; 281:121331. [PMID: 35016066 DOI: 10.1016/j.biomaterials.2021.121331] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 12/14/2021] [Accepted: 12/24/2021] [Indexed: 12/27/2022]
Abstract
Urinary bladder is a dynamic organ performing complex physiological activities. Together with ureters and urethra, it forms the lower urinary tract that facilitates urine collection, low-pressure storage, and volitional voiding. However, pathological disorders are often liable to cause irreversible damage and compromise the normal functionality of the bladder, necessitating surgical intervention for a reconstructive procedure. Non-urinary autologous grafts, primarily derived from gastrointestinal tract, have long been the gold standard in clinics to augment or to replace the diseased bladder tissue. Unfortunately, such treatment strategy is commonly associated with several clinical complications. In absence of an optimal autologous therapy, a biomaterial based bioengineered platform is an attractive prospect revolutionizing the modern urology. Predictably, extensive investigative research has been carried out in pursuit of better urological biomaterials, that overcome the limitations of conventional gastrointestinal graft. Against the above backdrop, this review aims to provide a comprehensive and one-stop update on different biomaterial-based strategies that have been proposed and explored over the past 60 years to restore the dynamic function of the otherwise dysfunctional bladder tissue. Broadly, two unique perspectives of bladder tissue engineering and total alloplastic bladder replacement are critically discussed in terms of their status and progress. While the former is pivoted on scaffold mediated regenerative medicine; in contrast, the latter is directed towards the development of a biostable bladder prosthesis. Together, these routes share a common aspiration of designing and creating a functional equivalent of the bladder wall, albeit, using fundamentally different aspects of biocompatibility and clinical needs. Therefore, an attempt has been made to systematically analyze and summarize the evolution of various classes as well as generations of polymeric biomaterials in urology. Considerable emphasis has been laid on explaining the bioengineering methodologies, pre-clinical and clinical outcomes. Some of the unaddressed challenges, including vascularization, innervation, hollow 3D prototype fabrication and urinary encrustation, have been highlighted that currently delay the successful commercial translation. More importantly, the rapidly evolving and expanding concepts of bioelectronic medicine are discussed to inspire future research efforts towards the further advancement of the field. At the closure, crucial insights are provided to forge the biomaterial assisted reconstruction as a long-term therapeutic strategy in urological practice for patients' care.
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Affiliation(s)
- Swati Sharma
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India
| | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India; Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India.
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5
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Gouarderes S, Ober C, Doumard L, Dandurand J, Vicendo P, Fourquaux I, Golberg A, Samouillan V, Gibot L. Pulsed electric fields induce extracellular matrix remodeling through MMPs activation and decreased collagen production. J Invest Dermatol 2021; 142:1326-1337.e9. [PMID: 34688615 DOI: 10.1016/j.jid.2021.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/10/2021] [Accepted: 09/28/2021] [Indexed: 11/15/2022]
Affiliation(s)
- Sara Gouarderes
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Camille Ober
- CIRIMAT UMR 5085, Université de Toulouse, Université Toulouse III - Paul Sabatier, France
| | - Layal Doumard
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Jany Dandurand
- CIRIMAT UMR 5085, Université de Toulouse, Université Toulouse III - Paul Sabatier, France
| | - Patricia Vicendo
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Isabelle Fourquaux
- Centre de Microscopie Électronique Appliquée à la Biologie, CMEAB, 133 route de Narbonne, 31062 Toulouse, France
| | - Alexander Golberg
- Porter School of Environment and Earth Sciences Studies, Tel Aviv University, Tel Aviv, Israel
| | - Valérie Samouillan
- CIRIMAT UMR 5085, Université de Toulouse, Université Toulouse III - Paul Sabatier, France
| | - Laure Gibot
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France.
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Kawecki F, Galbraith T, Clafshenkel WP, Fortin M, Auger FA, Fradette J. In Vitro Prevascularization of Self-Assembled Human Bone-Like Tissues and Preclinical Assessment Using a Rat Calvarial Bone Defect Model. MATERIALS 2021; 14:ma14082023. [PMID: 33920607 PMCID: PMC8073395 DOI: 10.3390/ma14082023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 12/15/2022]
Abstract
In vitro prevascularization has the potential to address the challenge of maintaining cell viability at the core of engineered constructs, such as bone substitutes, and to improve the survival of tissue grafts by allowing quicker anastomosis to the host microvasculature. The self-assembly approach of tissue engineering allows the production of biomimetic bone-like tissue constructs including extracellular matrix and living human adipose-derived stromal/stem cells (hASCs) induced towards osteogenic differentiation. We hypothesized that the addition of endothelial cells could improve osteogenesis and biomineralization during the production of self-assembled human bone-like tissues using hASCs. Additionally, we postulated that these prevascularized constructs would consequently improve graft survival and bone repair of rat calvarial bone defects. This study shows that a dense capillary network spontaneously formed in vitro during tissue biofabrication after two weeks of maturation. Despite reductions in osteocalcin levels and hydroxyapatite formation in vitro in prevascularized bone-like tissues (35 days of culture), in vivo imaging of prevascularized constructs showed an improvement in cell survival without impeding bone healing after 12 weeks of implantation in a calvarial bone defect model (immunocompromised male rats), compared to their stromal counterparts. Globally, these findings establish our ability to engineer prevascularized bone-like tissues with improved functional properties.
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Affiliation(s)
- Fabien Kawecki
- Centre de Recherche en Organogénèse Expérimentale de l′Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, Québec, QC G1J 1Z4, Canada; (F.K.); (T.G.); (W.P.C.); (M.F.); (F.A.A.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Todd Galbraith
- Centre de Recherche en Organogénèse Expérimentale de l′Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, Québec, QC G1J 1Z4, Canada; (F.K.); (T.G.); (W.P.C.); (M.F.); (F.A.A.)
| | - William P. Clafshenkel
- Centre de Recherche en Organogénèse Expérimentale de l′Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, Québec, QC G1J 1Z4, Canada; (F.K.); (T.G.); (W.P.C.); (M.F.); (F.A.A.)
| | - Michel Fortin
- Centre de Recherche en Organogénèse Expérimentale de l′Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, Québec, QC G1J 1Z4, Canada; (F.K.); (T.G.); (W.P.C.); (M.F.); (F.A.A.)
- Faculty of Dentistry, Université Laval, Québec, QC G1V 0A6, Canada
- Service of Oral and Maxillofacial Surgery, CHU de Québec-Université Laval, Québec, QC G1J 1Z4, Canada
| | - François A. Auger
- Centre de Recherche en Organogénèse Expérimentale de l′Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, Québec, QC G1J 1Z4, Canada; (F.K.); (T.G.); (W.P.C.); (M.F.); (F.A.A.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Julie Fradette
- Centre de Recherche en Organogénèse Expérimentale de l′Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, Québec, QC G1J 1Z4, Canada; (F.K.); (T.G.); (W.P.C.); (M.F.); (F.A.A.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Correspondence:
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7
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Dias FGG, Pereira LDF, Parreira RLT, Veneziani RCS, Bianchi TC, Fontes VFNDP, Galvani MDC, Cerce DDP, Martins CHG, Rinaldi-Neto F, Ferreira NH, da Silva LHD, de Oliveira LTS, Esperandim TR, de Sousa FA, Ambrósio SR, Tavares DC. Evaluation of the antiseptic and wound healing potential of polyhexamethylene guanidine hydrochloride as well as its toxic effects. Eur J Pharm Sci 2021; 160:105739. [PMID: 33524503 DOI: 10.1016/j.ejps.2021.105739] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/24/2020] [Accepted: 01/26/2021] [Indexed: 02/06/2023]
Abstract
The synthetic polyhexamethylene guanidine hydrochloride (PHMGH) polymer presents antifungal and antimicrobial activities in vitro. However, in vivo reports regarding its antiseptic and healing activity are scarce in the scientific literature. Thus, the present study aimed to evaluate the antimicrobial and healing effects, as well as toxicological parameters, of a topical solution containing 0.5% PHMGH (Akwaton®) in the treatment of superficial skin wounds experimentally induced on the dorsum of rodents. In addition, non-clinical safety studies were also conducted for use in human health, such as acute oral toxicity and genotoxicity tests. Animals did clinically not present dermatitis. After two days of topical treatment, PHMGH showed a significant antiseptic effect compared to the untreated group, reducing the number of colony-forming units by 72%, reaching 100% on the fourth day of treatment. The animals treated with PHMGH showed a significant area reduction of the skin lesions in relation to the untreated group, indicating a healing effect of the polymer. Moreover, PHMGH treatment led to a significant increase in fibroblasts when compared to the untreated group, revealing its healing action. No significant differences were observed between the biochemical indicators of hepatoxicity and nephrotoxicity, nor genotoxicity between the PHMGH-treated and the negative control groups. The results of acute oral toxicity showed that PHMGH at 5% presents a lethal dose 50% greater than the 2000 mg/kg. At a concentration of 5%, PHMGH did not show genotoxicity nor cytotoxicity at doses up to 1500 mg/kg through the micronucleus assay in mice. Therefore, 0.5% PHMGH showed an antimicrobial and healing effect, with no toxicity, and could be a promising adjunct in the microbial control of healing wounds.
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Affiliation(s)
- Fernanda Gosuen Gonçalves Dias
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil.
| | - Lucas de Freitas Pereira
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Renato Luis Tame Parreira
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Rodrigo Cassio Sola Veneziani
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Thamires Chiquini Bianchi
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | | | - Marina de Carlos Galvani
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Danielle Dal Picolo Cerce
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Carlos Henrique Gomes Martins
- Universidade Federal de Uberlândia, Av. João Naves de Ávila, 2121 - Santa Mônica, 38408-100, Uberlândia, Minas Gerais, Brazil
| | - Francisco Rinaldi-Neto
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Natália Helen Ferreira
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Lucas Henrique Domingos da Silva
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Lucas Teixeira Souza de Oliveira
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Tábata Rodrigues Esperandim
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Francielle Aparecida de Sousa
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Sérgio Ricardo Ambrósio
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
| | - Denise Crispim Tavares
- Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, 14404-600, Franca, São Paulo, Brazil
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8
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Atlas Y, Gorin C, Novais A, Marchand MF, Chatzopoulou E, Lesieur J, Bascetin R, Binet-Moussy C, Sadoine J, Lesage M, Opsal-Vital S, Péault B, Monnot C, Poliard A, Girard P, Germain S, Chaussain C, Muller L. Microvascular maturation by mesenchymal stem cells in vitro improves blood perfusion in implanted tissue constructs. Biomaterials 2020; 268:120594. [PMID: 33387754 DOI: 10.1016/j.biomaterials.2020.120594] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 10/31/2020] [Accepted: 12/06/2020] [Indexed: 02/07/2023]
Abstract
Blood perfusion of grafted tissue constructs is a hindrance to the success of stem cell-based therapies by limiting cell survival and tissue regeneration. Implantation of a pre-vascularized network engineered in vitro has thus emerged as a promising strategy for promoting blood supply deep into the construct, relying on inosculation with the host vasculature. We aimed to fabricate in vitro tissue constructs with mature microvascular networks, displaying perivascular recruitment and basement membrane, taking advantage of the angiogenic properties of dental pulp stem cells and self-assembly of endothelial cells into capillaries. Using digital scanned light-sheet microscopy, we characterized the generation of dense microvascular networks in collagen hydrogels and established parameters for quantification of perivascular recruitment. We also performed original time-lapse analysis of stem cell recruitment. These experiments demonstrated that perivascular recruitment of dental pulp stem cells is driven by PDGF-BB. Recruited stem cells participated in deposition of vascular basement membrane and vessel maturation. Mature microvascular networks thus generated were then compared to those lacking perivascular coverage generated using stem cell conditioned medium. Implantation in athymic nude mice demonstrated that in vitro maturation of microvascular networks improved blood perfusion and cell survival within the construct. Taken together, these data demonstrate the strong potential of in vitro production of mature microvasculature for improving cell-based therapies.
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Affiliation(s)
- Yoann Atlas
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France; Sorbonne Université, Collège doctoral, Paris, France
| | - Caroline Gorin
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France; AP-HP, Services Odontologie, (GH Paris Est, Paris Nord, Henri Mondor), France
| | - Anita Novais
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France; AP-HP, Services Odontologie, (GH Paris Est, Paris Nord, Henri Mondor), France
| | - Marion F Marchand
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France; Sorbonne Université, Collège doctoral, Paris, France
| | - Eirini Chatzopoulou
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France; AP-HP, Services Odontologie, (GH Paris Est, Paris Nord, Henri Mondor), France
| | - Julie Lesieur
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France
| | - Rumeyza Bascetin
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France
| | - Clément Binet-Moussy
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France
| | - Jeremy Sadoine
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France
| | - Matthieu Lesage
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France
| | - Sibylle Opsal-Vital
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France; AP-HP, Services Odontologie, (GH Paris Est, Paris Nord, Henri Mondor), France
| | - Bruno Péault
- Department of Orthopaedic Surgery, UCLA and Orthopaedic Hospital, Orthopaedic Hospital Research Center, Los Angeles, United States; Center for Cardiovascular Science, MRC Center for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Catherine Monnot
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France
| | - Anne Poliard
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France
| | - Philippe Girard
- Institut Jacques Monod, UMR7592 CNRS, Université de Paris, Paris, France
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France
| | - Catherine Chaussain
- Université de Paris, UR2496 Pathologies, Imagerie et Biothérapies Orofaciales et Plateforme Imagerie du Vivant, Paris, France; AP-HP, Services Odontologie, (GH Paris Est, Paris Nord, Henri Mondor), France.
| | - Laurent Muller
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS UMR7241, INSERM U1050, PSL Research University, Paris, France.
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9
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Ding MH, Lozoya EG, Rico RN, Chew SA. The Role of Angiogenesis-Inducing microRNAs in Vascular Tissue Engineering. Tissue Eng Part A 2020; 26:1283-1302. [PMID: 32762306 DOI: 10.1089/ten.tea.2020.0170] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Angiogenesis is an important process in tissue repair and regeneration as blood vessels are integral to supply nutrients to a functioning tissue. In this review, the application of microRNAs (miRNAs) or anti-miRNAs that can induce angiogenesis to aid in blood vessel formation for vascular tissue engineering in ischemic diseases such as peripheral arterial disease and stroke, cardiac diseases, and skin and bone tissue engineering is discussed. Endothelial cells (ECs) form the endothelium of the blood vessel and are recognized as the primary cell type that drives angiogenesis and studied in the applications that were reviewed. Besides ECs, mesenchymal stem cells can also play a pivotal role in these applications, specifically, by secreting growth factors or cytokines for paracrine signaling and/or as constituent cells in the new blood vessel formed. In addition to delivering miRNAs or cells transfected/transduced with miRNAs for angiogenesis and vascular tissue engineering, the utilization of extracellular vesicles (EVs), such as exosomes, microvesicles, and EVs collectively, has been more recently explored. Proangiogenic miRNAs and anti-miRNAs contribute to angiogenesis by targeting the 3'-untranslated region of targets to upregulate proangiogenic factors such as vascular endothelial growth factor (VEGF), basic fibroblast growth factor, and hypoxia-inducible factor-1 and increase the transduction of VEGF signaling through the PI3K/AKT and Ras/Raf/MEK/ERK signaling pathways such as phosphatase and tensin homolog or regulating the signaling of other pathways important for angiogenesis such as the Notch signaling pathway and the pathway to produce nitric oxide. In conclusion, angiogenesis-inducing miRNAs and anti-miRNAs are promising tools for vascular tissue engineering for several applications; however, future work should emphasize optimizing the delivery and usage of these therapies as miRNAs can also be associated with the negative implications of cancer.
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Affiliation(s)
- May-Hui Ding
- Department of Health and Biomedical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, USA
| | - Eloy G Lozoya
- Department of Health and Biomedical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, USA
| | - Rene N Rico
- Department of Health and Biomedical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, USA
| | - Sue Anne Chew
- Department of Health and Biomedical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, USA
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10
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Jakubowska W, Chabaud S, Saba I, Galbraith T, Berthod F, Bolduc S. Prevascularized Tissue-Engineered Human Vaginal Mucosa: In Vitro Optimization and In Vivo Validation. Tissue Eng Part A 2020; 26:811-822. [PMID: 32354258 DOI: 10.1089/ten.tea.2020.0036] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Tissue engineering offers novel therapies for vaginal reconstruction in patients with congenital vaginal agenesis such as Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome. This study aims to reconstruct a prevascularized tissue-engineered model of human vaginal mucosa (HVM) using the self-assembly approach, free of exogenous materials. In this study, a new cell culture method was used to enhance microcapillary network formation while maintaining sufficient biomechanical properties for surgical manipulation. Human vaginal fibroblasts were coseeded with human umbilical vein endothelial cells (HUVECs). Transduction of HUVEC with a vector that allows the expression of both green fluorescent protein (GFP) and luciferase allowed the monitoring of the formation of a microvascular network in vitro and the assessment of the viability and stability of HUVEC in vivo. Two reconstructed vaginal mucosa grafts, a prevascularized, and a nonvascularized control were implanted subcutaneously on the back of 12 female nude mice and monitored for up to 21 days. Prevascularized grafts demonstrated signs of earlier vascularization compared with controls. However, there were no differences in graft survival outcomes in both groups. The finding of mouse red blood cells within GFP-positive capillaries 1 week after implantation demonstrates the capacity of the reconstructed capillary-like network to connect to the host circulation and sustain blood perfusion in vivo. Furthermore, sites of inosculation between GFP-positive HUVEC and mouse endothelial cells were observed within prevascularized grafts. Our results demonstrate that the addition of endothelial cells using a hybrid approach of self-assembly and reseeding generates a mature capillary-like network that has the potential to become functional in vivo, offering an optimized prevascularized HVM model for further translational research. Impact statement This study introduces a prevascularized tissue-engineered model of human vaginal mucosa (HVM), which is adapted for surgical applications. The prevascularization of tissue-engineered grafts aims to enhance graft survival and is an interesting feature for sexual function. Various scaffold-free cell culture methods were tested to reconstruct a mature microcapillary network within HVM grafts while meeting biomechanical needs for surgery. Moreover, this animal study assesses the vascular functionality of prevascularized grafts in vivo, serving as a proof of concept for further translational applications. This research underlines the continuous efforts to optimize current models to closely mimic native tissues and further improve surgical outcomes.
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Affiliation(s)
- Weronika Jakubowska
- LOEX, CHU de Québec-Université Laval Research Centre, Regenerative Medicine Division, Québec City, Canada
| | - Stéphane Chabaud
- LOEX, CHU de Québec-Université Laval Research Centre, Regenerative Medicine Division, Québec City, Canada
| | - Ingrid Saba
- LOEX, CHU de Québec-Université Laval Research Centre, Regenerative Medicine Division, Québec City, Canada
| | - Todd Galbraith
- LOEX, CHU de Québec-Université Laval Research Centre, Regenerative Medicine Division, Québec City, Canada
| | - François Berthod
- LOEX, CHU de Québec-Université Laval Research Centre, Regenerative Medicine Division, Québec City, Canada.,Department of Surgery, Faculty of Medicine, Laval University, Quebec City, Canada
| | - Stéphane Bolduc
- LOEX, CHU de Québec-Université Laval Research Centre, Regenerative Medicine Division, Québec City, Canada.,Department of Surgery, Faculty of Medicine, Laval University, Quebec City, Canada
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Gouarderes S, Doumard L, Vicendo P, Mingotaud AF, Rols MP, Gibot L. Electroporation does not affect human dermal fibroblast proliferation and migration properties directly but indirectly via the secretome. Bioelectrochemistry 2020; 134:107531. [PMID: 32335353 DOI: 10.1016/j.bioelechem.2020.107531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/03/2020] [Accepted: 04/04/2020] [Indexed: 12/29/2022]
Abstract
Aesthetic wound healing is often experienced by patients after electrochemotherapy. We hypothesized that pulsed electric fields applied during electrochemotherapy (ECT) or gene electrotransfer (GET) protocols could stimulate proliferation and migration of human cutaneous cells, as described in protocols for electrostimulation of wound healing. We used videomicroscopy to monitor and quantify in real time primary human dermal fibroblast behavior when exposed in vitro to ECT and GET electric parameters, in terms of survival, proliferation and migration in a calibrated scratch wound assay. Distinct electric field intensities were applied to allow gradient in cell electropermeabilization while maintaining reversible permeabilization conditions, in order to mimic in vivo heterogeneous electric field distribution of complex tissues. Neither galvanotaxis nor statistical modification of fibroblast migration were observed in a calibrated scratch wound assay after application of ECT and GET parameters. The only effect on proliferation was observed under the strongest GET conditions, which drastically reduced the number of fibroblasts through induction of mitochondrial stress and apoptosis. Finally, we found that 24 h-conditioned cell culture medium by electrically stressed fibroblasts tended to increase the migration properties of cells that were not exposed to electric field. RT-qPCR array indicated that several growth factor transcripts were strongly modified after electroporation.
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Affiliation(s)
- Sara Gouarderes
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Layal Doumard
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France; Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Patricia Vicendo
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Anne-Françoise Mingotaud
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Marie-Pierre Rols
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Laure Gibot
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France; Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France.
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12
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Roy V, Magne B, Vaillancourt-Audet M, Blais M, Chabaud S, Grammond E, Piquet L, Fradette J, Laverdière I, Moulin VJ, Landreville S, Germain L, Auger FA, Gros-Louis F, Bolduc S. Human Organ-Specific 3D Cancer Models Produced by the Stromal Self-Assembly Method of Tissue Engineering for the Study of Solid Tumors. BIOMED RESEARCH INTERNATIONAL 2020; 2020:6051210. [PMID: 32352002 PMCID: PMC7178531 DOI: 10.1155/2020/6051210] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 02/07/2020] [Accepted: 02/28/2020] [Indexed: 12/24/2022]
Abstract
Cancer research has considerably progressed with the improvement of in vitro study models, helping to understand the key role of the tumor microenvironment in cancer development and progression. Over the last few years, complex 3D human cell culture systems have gained much popularity over in vivo models, as they accurately mimic the tumor microenvironment and allow high-throughput drug screening. Of particular interest, in vitrohuman 3D tissue constructs, produced by the self-assembly method of tissue engineering, have been successfully used to model the tumor microenvironment and now represent a very promising approach to further develop diverse cancer models. In this review, we describe the importance of the tumor microenvironment and present the existing in vitro cancer models generated through the self-assembly method of tissue engineering. Lastly, we highlight the relevance of this approach to mimic various and complex tumors, including basal cell carcinoma, cutaneous neurofibroma, skin melanoma, bladder cancer, and uveal melanoma.
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Affiliation(s)
- Vincent Roy
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
| | - Brice Magne
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
| | - Maude Vaillancourt-Audet
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
| | - Mathieu Blais
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
| | - Stéphane Chabaud
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
| | - Emil Grammond
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
| | - Léo Piquet
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Centre de Recherche sur le Cancer de l'Université Laval, Québec, QC, Canada
| | - Julie Fradette
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Isabelle Laverdière
- Centre de Recherche sur le Cancer de l'Université Laval, Québec, QC, Canada
- Faculty of Pharmacy, Université Laval and CHU de Québec-Université Laval Research Center, Oncology Division, Québec, QC, Canada
| | - Véronique J. Moulin
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Solange Landreville
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Centre de Recherche sur le Cancer de l'Université Laval, Québec, QC, Canada
- Department of Ophthalmology, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Lucie Germain
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - François A. Auger
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - François Gros-Louis
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Stéphane Bolduc
- Centre de Recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice, Québec, QC, Canada
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
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Baik JW, Kim JY, Cho S, Choi S, Kim J, Kim C. Super Wide-Field Photoacoustic Microscopy of Animals and Humans In Vivo. IEEE TRANSACTIONS ON MEDICAL IMAGING 2020; 39:975-984. [PMID: 31484110 DOI: 10.1109/tmi.2019.2938518] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Acoustic-resolution photoacoustic micro-scopy (AR-PAM) is an emerging biomedical imaging modality that combines superior optical sensitivity and fine ultrasonic resolution in an optical quasi-diffusive regime (~1-3 mm in tissues). AR-PAM has been explored for anatomical, functional, and molecular information in biological tissues. Heretofore, AR-PAM systems have suffered from a limited field-of-view (FOV) and/or slow imaging speed, which have precluded them from routine preclinical and clinical applications. Here, we demonstrate an advanced AR-PAM system that overcomes both limitations of previous AR-PAM systems. The new AR-PAM system demonstrates a super wide-field scanning that utilized a 1-axis water-proofing microelectromechanical systems (MEMS) scanner integrated with two linear stepper motor stages. We achieved an extended FOV of 36 ×80 mm2 by mosaicking multiple volumetric images of 36 ×2.5 mm2 with a total acquisition time of 224 seconds. For one volumetric data (i.e., 36 ×2.5 mm2), the B-scan imaging speed over the short axis (i.e., 2.5 mm) was 83 Hz in humans. The 3D volumetric image was also provided by using MEMS mirror scanning along the X-axis and stepper-motor scanning along the Y-axis. The super-wide FOV mosaic image was realized by registering and merging all individual volumetric images. Finally, we obtained multi-plane whole-body in-vivo PA images of small animals, illustrating distinct multi-layered structures including microvascular networks and internal organs. Importantly, we also visualized microvascular networks in human fingers, palm, and forearm successfully. This advanced MEMS-AR-PAM system could potentially enable hitherto not possible wide preclinical and clinical applications.
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McLuckie M, Robotti F, Sanchez-Macedo N, Enderlin D, Frese L, Cheng PF, Levesque MP, Egaña JT, Poulikakos D, Ferrari A, Lindenblatt N. Lipoconstruct surface topography grating size influences vascularization onset in the dorsal skinfold chamber model. Acta Biomater 2020; 106:136-144. [PMID: 32044460 DOI: 10.1016/j.actbio.2020.01.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/10/2020] [Accepted: 01/31/2020] [Indexed: 12/14/2022]
Abstract
After skin tissue injury or pathological removal, vascularization timing is paramount in graft survival. As full thickness skin grafts often fail to become perfused over larger surfaces, split-thickness grafts are preferred and can be used together with biomaterials, which themselves are non-angiogenic. One way of promoting vascular ingrowth is to "pre-vascularize" an engineered substitute by introducing endothelial cells (ECs). Since it has been previously demonstrated that surface structured biomaterials have an effect on wound healing, skin regeneration, and fibrosis reduction, we proposed that a microvascular-rich lipoconstruct with anisotropic topographical cues could be a clinically translatable vascularization approach. Murine lipofragments were formed with three polydimethylsiloxane molds (flat, 5 µm, and 50 µm parallel gratings) and implanted into the dorsal skinfold chamber of male C57BL/6 mice. Vascular ingrowth was observed through intravital microscopy over 21 days and further assessed by histology and protein identification. Our investigation revealed that topographical feature size influenced the commencement of neovascular ingrowth, with 5 µm gratings exhibiting early construct perfusion at 3 days post-operation, and 50 µm being delayed until day 5. We therefore postulate that surface structured lipoconstructs may serve as an easily obtained and produced construct suitable for providing soft tissue and ECs to tissue defects. STATEMENT OF SIGNIFICANCE: Skin graft failures due to inadequate or uneven perfusion frequently occur and can be even more complicated in deep, difficult to heal wounds, or bone coverage. In complex injuries, biomaterials are often used to cover bone structures with a standard split thickness graft; however, perfusion can take up to 3 weeks. Thus, any means to promote faster and uniform vascularization could significantly reduce healing time, as well as lower patient down-time. As pre-vascularized constructs have reported success in research, we created a cost-efficient, translatable method with no additional laboratory time as adipose tissue can be harvested and used immediately. We further used surface topography as an aspect to modulate construct perfusion, which has been reported for the first time here.
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15
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Gibot L, Montigny A, Baaziz H, Fourquaux I, Audebert M, Rols MP. Calcium Delivery by Electroporation Induces In Vitro Cell Death through Mitochondrial Dysfunction without DNA Damages. Cancers (Basel) 2020; 12:E425. [PMID: 32059457 PMCID: PMC7072520 DOI: 10.3390/cancers12020425] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 02/06/2020] [Indexed: 12/19/2022] Open
Abstract
Adolescent cancer survivors present increased risks of developing secondary malignancies due to cancer therapy. Electrochemotherapy is a promising anti-cancer approach that potentiates the cytotoxic effect of drugs by application of external electric field pulses. Clinicians proposed to associate electroporation and calcium. The current study aims to unravel the toxic mechanisms of calcium electroporation, in particular if calcium presents a genotoxic profile and if its cytotoxicity comes from the ion itself or from osmotic stress. Human dermal fibroblasts and colorectal HCT-116 cell line were treated by electrochemotherapy using bleomycin, cisplatin, calcium, or magnesium. Genotoxicity, cytotoxicity, mitochondrial membrane potential, ATP content, and caspases activities were assessed in cells grown on monolayers and tumor growth was assayed in tumor spheroids. Results in monolayers show that unlike cisplatin and bleomycin, calcium electroporation induces cell death without genotoxicity induction. Its cytotoxicity correlates with a dramatic fall in mitochondrial membrane potential and ATP depletion. Opposite of magnesium, over seven days of calcium electroporation led to spheroid tumor growth regression. As non-genotoxic, calcium has a better safety profile than conventional anticancer drugs. Calcium is already authorized by different health authorities worldwide. Therefore, calcium electroporation should be a cancer treatment of choice due to the reduced potential of secondary malignancies.
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Affiliation(s)
- Laure Gibot
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, 31077 Toulouse, France; (L.G.); (A.M.); (H.B.)
| | - Audrey Montigny
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, 31077 Toulouse, France; (L.G.); (A.M.); (H.B.)
| | - Houda Baaziz
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, 31077 Toulouse, France; (L.G.); (A.M.); (H.B.)
| | - Isabelle Fourquaux
- Centre de Microscopie Électronique Appliquée à la Biologie, CMEAB, 133 route de Narbonne, 31062 Toulouse CEDEX, France;
| | - Marc Audebert
- Toxalim, Université de Toulouse, INRAE-UMR1331, ENVT, INP-Purpan, UPS, 31027 Toulouse, France
| | - Marie-Pierre Rols
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, 31077 Toulouse, France; (L.G.); (A.M.); (H.B.)
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16
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Kolosnjaj-Tabi J, Kralj S, Griseti E, Nemec S, Wilhelm C, Plan Sangnier A, Bellard E, Fourquaux I, Golzio M, Rols MP. Magnetic Silica-Coated Iron Oxide Nanochains as Photothermal Agents, Disrupting the Extracellular Matrix, and Eradicating Cancer Cells. Cancers (Basel) 2019; 11:E2040. [PMID: 31861146 PMCID: PMC6966508 DOI: 10.3390/cancers11122040] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 12/20/2022] Open
Abstract
Cancerous cells and the tumor microenvironment are among key elements involved in cancer development, progression, and resistance to treatment. In order to tackle the cells and the extracellular matrix, we herein propose the use of a class of silica-coated iron oxide nanochains, which have superior magnetic responsiveness and can act as efficient photothermal agents. When internalized by different cancer cell lines and normal (non-cancerous) cells, the nanochains are not toxic, as assessed on 2D and 3D cell culture models. Yet, upon irradiation with near infrared light, the nanochains become efficient cytotoxic photothermal agents. Besides, not only do they generate hyperthermia, which effectively eradicates tumor cells in vitro, but they also locally melt the collagen matrix, as we evidence in real-time, using engineered cell sheets with self-secreted extracellular matrix. By simultaneously acting as physical (magnetic and photothermal) effectors and chemical delivery systems, the nanochain-based platforms offer original multimodal possibilities for prospective cancer treatment, affecting both the cells and the extracellular matrix.
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Affiliation(s)
- Jelena Kolosnjaj-Tabi
- Institute of Pharmacology and Structural Biology, 205 Route de Narbonne, 31400 Toulouse, France; (E.G.); (E.B.); (M.G.); (M.-P.R.)
| | - Slavko Kralj
- Department for Materials Synthesis, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;
- Faculty of Pharmacy, University of Ljubljana, Askerceva cesta 7, 1000 Ljubljana, Slovenia;
| | - Elena Griseti
- Institute of Pharmacology and Structural Biology, 205 Route de Narbonne, 31400 Toulouse, France; (E.G.); (E.B.); (M.G.); (M.-P.R.)
| | - Sebastjan Nemec
- Department for Materials Synthesis, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;
- Faculty of Pharmacy, University of Ljubljana, Askerceva cesta 7, 1000 Ljubljana, Slovenia;
| | - Claire Wilhelm
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057, Bâtiment Condorcet, Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet, 75205 Paris, France;
| | - Anouchka Plan Sangnier
- Faculty of Pharmacy, University of Ljubljana, Askerceva cesta 7, 1000 Ljubljana, Slovenia;
| | - Elisabeth Bellard
- Institute of Pharmacology and Structural Biology, 205 Route de Narbonne, 31400 Toulouse, France; (E.G.); (E.B.); (M.G.); (M.-P.R.)
| | - Isabelle Fourquaux
- Centre de Microscopie Electronique Appliquée à la Biologie (CMEAB), Faculté de Médecine Rangueil, 133 Route de Narbonne, 31400 Toulouse, France;
| | - Muriel Golzio
- Institute of Pharmacology and Structural Biology, 205 Route de Narbonne, 31400 Toulouse, France; (E.G.); (E.B.); (M.G.); (M.-P.R.)
| | - Marie-Pierre Rols
- Institute of Pharmacology and Structural Biology, 205 Route de Narbonne, 31400 Toulouse, France; (E.G.); (E.B.); (M.G.); (M.-P.R.)
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Urciuolo F, Casale C, Imparato G, Netti PA. Bioengineered Skin Substitutes: the Role of Extracellular Matrix and Vascularization in the Healing of Deep Wounds. J Clin Med 2019; 8:E2083. [PMID: 31805652 PMCID: PMC6947552 DOI: 10.3390/jcm8122083] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 12/21/2022] Open
Abstract
The formation of severe scars still represents the result of the closure process of extended and deep skin wounds. To address this issue, different bioengineered skin substitutes have been developed but a general consensus regarding their effectiveness has not been achieved yet. It will be shown that bioengineered skin substitutes, although representing a valid alternative to autografting, induce skin cells in repairing the wound rather than guiding a regeneration process. Repaired skin differs from regenerated skin, showing high contracture, loss of sensitivity, impaired pigmentation and absence of cutaneous adnexa (i.e., hair follicles and sweat glands). This leads to significant mobility and aesthetic concerns, making the development of more effective bioengineered skin models a current need. The objective of this review is to determine the limitations of either commercially available or investigational bioengineered skin substitutes and how advanced skin tissue engineering strategies can be improved in order to completely restore skin functions after severe wounds.
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Affiliation(s)
- Francesco Urciuolo
- Department of Chemical, Materials and Industrial Production Engineering (DICMAPI) University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy; (C.C.); (P.A.N.)
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II P.le Tecchio 80, 80125 Naples, Italy
| | - Costantino Casale
- Department of Chemical, Materials and Industrial Production Engineering (DICMAPI) University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy; (C.C.); (P.A.N.)
| | - Giorgia Imparato
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Naples, Italy;
| | - Paolo A. Netti
- Department of Chemical, Materials and Industrial Production Engineering (DICMAPI) University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy; (C.C.); (P.A.N.)
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II P.le Tecchio 80, 80125 Naples, Italy
- Center for Advanced Biomaterials for HealthCare@CRIB, Istituto Italiano di Tecnologia, Largo Barsanti e Matteucci 53, 80125 Naples, Italy;
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Gibot L, Kolosnjaj-Tabi J, Bellard E, Chretiennot T, Saurin Q, Catrain A, Golzio M, Vézinet R, Rols MP. Evaluations of Acute and Sub-Acute Biological Effects of Narrowband and Moderate-Band High Power Electromagnetic Waves on Cellular Spheroids. Sci Rep 2019; 9:15324. [PMID: 31653929 PMCID: PMC6814744 DOI: 10.1038/s41598-019-51686-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/23/2019] [Indexed: 12/16/2022] Open
Abstract
High power electromagnetic signals can disrupt the functioning of electronic devices. As electromagnetism plays a role in cells homeostasis, such electromagnetic signals could potentially also alter some physiological processes. Herein we report on distinct biological parameters assessment after cellular spheroids exposure to high power electromagnetic signals, such as the ones used for defense applications. Signals effects were assessed in tumor cells spheroids and in normal human dermal fibroblasts spheroids, where macroscopic aspect, growth, plasma membrane integrity, induction of apoptosis, ATP content, and mitochondrial potential were investigated after spheroids exposure to high power electromagnetic signals. No significant effects were observed, indicating that 1.5 GHz narrowband electromagnetic fields with incident amplitude level of 40 kV/m, and 150 MHz moderate-band electric fields with an amplitude of 72.5 to approximately 200 kV/m, do not cause any significant alterations of assessed parameters.
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Affiliation(s)
- Laure Gibot
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Jelena Kolosnjaj-Tabi
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Elisabeth Bellard
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | | | | | | | - Muriel Golzio
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
| | | | - Marie-Pierre Rols
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France.
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Bowers DT, Song W, Wang LH, Ma M. Engineering the vasculature for islet transplantation. Acta Biomater 2019; 95:131-151. [PMID: 31128322 PMCID: PMC6824722 DOI: 10.1016/j.actbio.2019.05.051] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 04/13/2019] [Accepted: 05/20/2019] [Indexed: 12/17/2022]
Abstract
The microvasculature in the pancreatic islet is highly specialized for glucose sensing and insulin secretion. Although pancreatic islet transplantation is a potentially life-changing treatment for patients with insulin-dependent diabetes, a lack of blood perfusion reduces viability and function of newly transplanted tissues. Functional vasculature around an implant is not only necessary for the supply of oxygen and nutrients but also required for rapid insulin release kinetics and removal of metabolic waste. Inadequate vascularization is particularly a challenge in islet encapsulation. Selectively permeable membranes increase the barrier to diffusion and often elicit a foreign body reaction including a fibrotic capsule that is not well vascularized. Therefore, approaches that aid in the rapid formation of a mature and robust vasculature in close proximity to the transplanted cells are crucial for successful islet transplantation or other cellular therapies. In this paper, we review various strategies to engineer vasculature for islet transplantation. We consider properties of materials (both synthetic and naturally derived), prevascularization, local release of proangiogenic factors, and co-transplantation of vascular cells that have all been harnessed to increase vasculature. We then discuss the various other challenges in engineering mature, long-term functional and clinically viable vasculature as well as some emerging technologies developed to address them. The benefits of physiological glucose control for patients and the healthcare system demand vigorous pursuit of solutions to cell transplant challenges. STATEMENT OF SIGNIFICANCE: Insulin-dependent diabetes affects more than 1.25 million people in the United States alone. Pancreatic islets secrete insulin and other endocrine hormones that control glucose to normal levels. During preparation for transplantation, the specialized islet blood vessel supply is lost. Furthermore, in the case of cell encapsulation, cells are protected within a device, further limiting delivery of nutrients and absorption of hormones. To overcome these issues, this review considers methods to rapidly vascularize sites and implants through material properties, pre-vascularization, delivery of growth factors, or co-transplantation of vessel supporting cells. Other challenges and emerging technologies are also discussed. Proper vascular growth is a significant component of successful islet transplantation, a treatment that can provide life-changing benefits to patients.
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Affiliation(s)
- Daniel T Bowers
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Wei Song
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Long-Hai Wang
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Minglin Ma
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
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20
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Herron LA, Hansen CS, Abaci HE. Engineering tissue-specific blood vessels. Bioeng Transl Med 2019; 4:e10139. [PMID: 31572797 PMCID: PMC6764806 DOI: 10.1002/btm2.10139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/15/2019] [Accepted: 06/17/2019] [Indexed: 12/11/2022] Open
Abstract
Vascular diversity among organs has recently become widely recognized. Several studies using mouse and human fetal tissues revealed distinct characteristics of organ-specific vasculature in molecular and functional levels. Thorough understanding of vascular heterogeneities in human adult tissues is significant for developing novel strategies for targeted drug delivery and tissue regeneration. Recent advancements in microfabrication techniques, biomaterials, and differentiation protocols allowed for incorporation of microvasculature into engineered organs. Such vascularized organ models represent physiologically relevant platforms that may offer innovative tools for dissecting the effects of the organ microenvironment on vascular development and expand our present knowledge on organ-specific human vasculature. In this article, we provide an overview of the current structural and molecular evidence on microvascular diversity, bioengineering methods used to recapitulate the microenvironmental cues, and recent vascularized three-dimensional organ models from the perspective of tissue-specific vasculature.
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Affiliation(s)
- Lauren A. Herron
- Department of DermatologyColumbia University Irving Medical CenterNew YorkNY10032
| | - Corey S. Hansen
- Department of DermatologyColumbia University Irving Medical CenterNew YorkNY10032
| | - Hasan E. Abaci
- Department of DermatologyColumbia University Irving Medical CenterNew YorkNY10032
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21
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Li S, Wang K, Hu Q, Zhang C, Wang B. Direct-write and sacrifice-based techniques for vasculatures. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109936. [PMID: 31500055 DOI: 10.1016/j.msec.2019.109936] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 05/22/2019] [Accepted: 07/01/2019] [Indexed: 12/27/2022]
Abstract
Fabricating biomimetic vasculatures is considered one of the greatest challenges in tissue regeneration due to their complex structures across various length scales. Many strategies have been investigated on how to fabricate tissue-engineering vasculatures (TEVs), including vascular-like and vascularized structures that can replace their native counterparts. The advancement of additive manufacturing (AM) technologies has enabled a wide range of fabrication techniques that can directly-write TEVs with complex and delicate structures. Meanwhile, sacrifice-based techniques, which rely on the removal of encapsulated sacrificial templates to form desired cavity-like structures, have also been widely studied. This review will specifically focus on the two most promising methods in these recently developed technologies, which are the direct-write method and the sacrifice-based method. The performance, advantages, and shortcomings of each technique are analyzed and compared. In the discussion, we list current challenges in this field and present our vision of next-generation TEVs technologies. Perspectives on future research in this field are given at the end.
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Affiliation(s)
- Shuai Li
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA; Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Kan Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Qingxi Hu
- Rapid Manufacturing Engineering Center, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China; Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai 200072, China; National Demonstration Center for Experimental Engineering Training Education, Shanghai University, Shanghai 200444, China.
| | - Chuck Zhang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA; H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Ben Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA 30332, USA; H. Milton Stewart School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
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22
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Horst M, Eberli D, Gobet R, Salemi S. Tissue Engineering in Pediatric Bladder Reconstruction-The Road to Success. Front Pediatr 2019; 7:91. [PMID: 30984717 PMCID: PMC6449422 DOI: 10.3389/fped.2019.00091] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 03/01/2019] [Indexed: 12/20/2022] Open
Abstract
Several congenital disorders can cause end stage bladder disease and possibly renal damage in children. The current gold standard therapy is enterocystoplasty, a bladder augmentation using an intestinal segment. However, the use of bowel tissue is associated with numerous complications such as metabolic disturbance, stone formation, urine leakage, chronic infections, and malignancy. Urinary diversions using engineered bladder tissue would obviate the need for bowel for bladder reconstruction. Despite impressive progress in the field of bladder tissue engineering over the past decades, the successful transfer of the approach into clinical routine still represents a major challenge. In this review, we discuss major achievements and challenges in bladder tissue regeneration with a focus on different strategies to overcome the obstacles and to meet the need for living functional tissue replacements with a good growth potential and a long life span matching the pediatric population.
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Affiliation(s)
- Maya Horst
- Laboratory for Urologic Tissue Engineering and Stem Cell Therapy, Department of Urology, University Hospital, Zurich, Switzerland
- Division of Pediatric Urology, Department of Pediatric Surgery, University Children‘s Hospital, Zurich, Switzerland
| | - Daniel Eberli
- Division of Pediatric Urology, Department of Pediatric Surgery, University Children‘s Hospital, Zurich, Switzerland
| | - Rita Gobet
- Laboratory for Urologic Tissue Engineering and Stem Cell Therapy, Department of Urology, University Hospital, Zurich, Switzerland
| | - Souzan Salemi
- Division of Pediatric Urology, Department of Pediatric Surgery, University Children‘s Hospital, Zurich, Switzerland
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23
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Bourland J, Mayrand D, Tremblay N, Moulin VJ, Fradette J, Auger FA. Isolation and Culture of Human Dermal Microvascular Endothelial Cells. Methods Mol Biol 2019; 1993:79-90. [PMID: 31148080 DOI: 10.1007/978-1-4939-9473-1_7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Primary endothelial cells are needed for angiogenesis studies, and more particularly in the field of tissue engineering, to engineer pre-vascularized tissues. Investigations often use human umbilical vein endothelial cells due to their extensive characterization, but also because they are easy to obtain and isolate. An alternative is the use of human dermal microvascular endothelial cells, more representative of adult skin angiogenesis and vascularization processes. This chapter presents a detailed methodology to isolate and culture microvascular endothelial cells from skin biopsies based on enzymatic digestion and mechanical extraction.
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Affiliation(s)
- Jennifer Bourland
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada.,Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, QC, Canada.,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada
| | - Dominique Mayrand
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada.,Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, QC, Canada.,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada
| | - Nathalie Tremblay
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada.,Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, QC, Canada.,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada
| | - Véronique J Moulin
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada.,Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, QC, Canada.,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada
| | - Julie Fradette
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada.,Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, QC, Canada.,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada
| | - François A Auger
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, QC, Canada. .,Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, QC, Canada. .,Faculty of Medicine, Department of Surgery, Université Laval, Québec, QC, Canada.
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24
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Helling AL, Viswanathan P, Cheliotis KS, Mobasseri SA, Yang Y, El Haj AJ, Watt FM. Dynamic Culture Substrates That Mimic the Topography of the Epidermal-Dermal Junction. Tissue Eng Part A 2018; 25:214-223. [PMID: 30280972 PMCID: PMC6388717 DOI: 10.1089/ten.tea.2018.0125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
IMPACT STATEMENT In human skin the junction between the epidermis and dermis undulates. Epidermal stem cells pattern according to their position relative to those undulations. Here we describe a rig in which epidermal cells are cultured on a collagen-coated poly(d,l-lactide-co-glycolide) (PLGA) membrane. When a vacuum is applied the membrane is induced to undulate. Stem cells cluster in response to the vacuum, whereas differentiating cells do not. Rho kinase inhibition results in loss of clustering, suggesting a role for Rho family members in the process. This dynamic platform is a new tool for investigating changes in the skin with age and disease.
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Affiliation(s)
- Ayelen L Helling
- 1 Center for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London, United Kingdom
| | - Priyalakshmi Viswanathan
- 1 Center for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London, United Kingdom
| | - Katerina S Cheliotis
- 1 Center for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London, United Kingdom
| | - Seyedeh Atefeh Mobasseri
- 1 Center for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London, United Kingdom
| | - Ying Yang
- 2 Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom
| | - Alicia J El Haj
- 2 Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom
| | - Fiona M Watt
- 1 Center for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London, United Kingdom
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25
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Proulx M, Mayrand D, Vincent C, Boisvert A, Aubin K, Trottier V, Fradette J. Short-term post-implantation dynamics of in vitro engineered human microvascularized adipose tissues. ACTA ACUST UNITED AC 2018; 13:065013. [PMID: 30277888 DOI: 10.1088/1748-605x/aadff7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Engineered adipose tissues are developed for their use as substitutes for tissue replacement in reconstructive surgery. To ensure a timely perfusion of the grafted substitutes, different strategies can be used such as the incorporation of an endothelial component. In this study, we engineered human adipose tissue substitutes comprising of functional adipocytes as well as a natural extracellular matrix using the self-assembly approach, without the use of exogenous scaffolding elements. Human microvascular endothelial cells (hMVECs) were incorporated during tissue production in vitro and we hypothesized that their presence would favor the early connection with the host vascular network translating into functional enhancement after implantation into nude mice in comparison to the substitutes that were not enriched in hMVECs. In vitro, no significant differences were observed between the substitutes in terms of histological aspects. After implantation, both groups presented numerous adipocytes and an abundant matrix in addition to the presence of host capillaries within the grafts. The substitutes thickness and volume were not significantly different between groups over the short-term time course of 14 days (d). For the microvascularized adipose tissues, human CD31 staining revealed a human capillary network connecting with the host microvasculature as early as 3 d after grafting. The detection of murine red blood cells within human CD31+ structures confirmed the functionality of the human capillary network. By analyzing the extent of the global vascularization achieved, a tendency towards increased total capillary network surface and volume was revealed for prevascularized tissues over 14 d. Therefore, applying this strategy on thicker reconstructed adipose tissues with rate-limiting oxygen diffusion might procure added benefits and prove useful to provide voluminous substitutes for patients suffering from adipose tissue loss or defects.
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Affiliation(s)
- Maryse Proulx
- Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, CMDGT/LOEX, Aile-R, Hôpital Enfant-Jésus, 1401, 18e Rue, Québec, Qc, G1J 1Z4, Canada. Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, 1401, 18e Rue, Québec, Qc, G1J 1Z4, Canada
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26
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Bourland J, Fradette J, Auger FA. Tissue-engineered 3D melanoma model with blood and lymphatic capillaries for drug development. Sci Rep 2018; 8:13191. [PMID: 30181613 PMCID: PMC6123405 DOI: 10.1038/s41598-018-31502-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/17/2018] [Indexed: 12/21/2022] Open
Abstract
While being the rarest skin cancer, melanoma is also the deadliest. To further drug discovery and improve clinical translation, new human cell-based in vitro models are needed. Our work strives to mimic the melanoma microenvironment in vitro as an alternative to animal testing. We used the self-assembly method to produce a 3D human melanoma model exempt of exogenous biomaterial. This model is based on primary human skin cells and melanoma cell lines while including a key feature for tumor progression: blood and lymphatic capillaries. Major components of the tumor microenvironment such as capillaries, human extracellular matrix, a stratified epidermis (involucrin, filaggrin) and basement membrane (laminin 332) are recapitulated in vitro. We demonstrate the persistence of CD31+ blood and podoplanin+/LYVE-1+ lymphatic capillaries in the engineered tissue. Chronic treatment with vemurafenib was applied to the model and elicited a dose-dependent response on proliferation and apoptosis, making it a promising tool to test new compounds in a human-like environment.
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Affiliation(s)
- Jennifer Bourland
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, Qc, Canada
- Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, Qc, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, Qc, Canada
| | - Julie Fradette
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, Qc, Canada
- Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, Qc, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, Qc, Canada
| | - François A Auger
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, Qc, Canada.
- Division of Regenerative Medicine, CHU de Québec-Université Laval Research Center, Québec, Qc, Canada.
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, Qc, Canada.
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27
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Yan WC, Davoodi P, Vijayavenkataraman S, Tian Y, Ng WC, Fuh JY, Robinson KS, Wang CH. 3D bioprinting of skin tissue: From pre-processing to final product evaluation. Adv Drug Deliv Rev 2018; 132:270-295. [PMID: 30055210 DOI: 10.1016/j.addr.2018.07.016] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 07/17/2018] [Accepted: 07/20/2018] [Indexed: 02/07/2023]
Abstract
Bioprinted skin tissue has the potential for aiding drug screening, formulation development, clinical transplantation, chemical and cosmetic testing, as well as basic research. Limitations of conventional skin tissue engineering approaches have driven the development of biomimetic skin equivalent via 3D bioprinting. A key hope for bioprinting skin is the improved tissue authenticity over conventional skin equivalent construction, enabling the precise localization of multiple cell types and appendages within a construct. The printing of skin faces challenges broadly associated with general 3D bioprinting, including the selection of cell types and biomaterials, and additionally requires in vitro culture formats that allow for growth at an air-liquid interface. This paper provides a thorough review of current 3D bioprinting technologies used to engineer human skin constructs and presents the overall pipelines of designing a biomimetic artificial skin via 3D bioprinting from the design phase (i.e. pre-processing phase) through the tissue maturation phase (i.e. post-processing) and into final product evaluation for drug screening, development, and drug delivery applications.
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28
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Li Z, Maitz P. Cell therapy for severe burn wound healing. BURNS & TRAUMA 2018; 6:13. [PMID: 29854856 PMCID: PMC5971426 DOI: 10.1186/s41038-018-0117-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/26/2018] [Indexed: 12/14/2022]
Abstract
Cell therapy has emerged as an important component of life-saving procedures in treating burns. Over past decades, advances in stem cells and regenerative medicine have offered exciting opportunities of developing cell-based alternatives and demonstrated the potential and feasibility of various stem cells for burn wound healing. However, there are still scientific and technical issues that should be resolved to facilitate the full potential of the cellular devices. More evidence from large, randomly controlled trials is also needed to understand the clinical impact of cell therapy in burns. This article aims to provide an up-to-date review of the research development and clinical applications of cell therapies in burn wound healing and skin regeneration.
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Affiliation(s)
- Zhe Li
- Burns Unit, Concord Hospital, Concord, New South Wales 2139 Australia
- Skin Laboratory, NSW Statewide Burns Service, Concord, New South Wales Australia
- Discipline of Surgery, University of Sydney Medical School, Camperdown, New South Wales Australia
| | - Peter Maitz
- Burns Unit, Concord Hospital, Concord, New South Wales 2139 Australia
- Skin Laboratory, NSW Statewide Burns Service, Concord, New South Wales Australia
- Discipline of Surgery, University of Sydney Medical School, Camperdown, New South Wales Australia
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29
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Kawecki F, Clafshenkel WP, Auger FA, Bourget JM, Fradette J, Devillard R. Self-assembled human osseous cell sheets as living biopapers for the laser-assisted bioprinting of human endothelial cells. Biofabrication 2018; 10:035006. [PMID: 29638221 DOI: 10.1088/1758-5090/aabd5b] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A major challenge during the engineering of voluminous bone tissues is to maintain cell viability in the central regions of the construct. In vitro prevascularization of bone substitutes relying on endothelial cell bioprinting has the potential to resolve this issue and to replicate the native bone microvasculature. Laser-assisted bioprinting (LAB) commonly uses biological layers of hydrogel, called 'biopapers', to support patterns of printed cells and constitute the basic units of the construct. The self-assembly approach of tissue engineering allows the production of biomimetic cell-derived bone extracellular matrix including living cells. We hypothesized that self-assembled osseous sheets can serve as living biopapers to support the LAB of human endothelial cells and thus guide tubule-like structure formation. Human umbilical vein endothelial cells were bioprinted on the surface of the biopapers following a predefined pattern of lines. The osseous biopapers showed relevant matrix mineralization and pro-angiogenic hallmarks. Our results revealed that formation of tubule-like structures was favored when the cellular orientation within the biopaper was parallel to the printed lines. Altogether, we validated that human osseous cell sheets can be used as biopapers for LAB, allowing the production of human prevascularized cell-based osseous constructs that can be relevant for autologous bone repair applications.
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Affiliation(s)
- F Kawecki
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Center-Université Laval, QC, Canada. Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
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30
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Engineering Tissues without the Use of a Synthetic Scaffold: A Twenty-Year History of the Self-Assembly Method. BIOMED RESEARCH INTERNATIONAL 2018; 2018:5684679. [PMID: 29707571 PMCID: PMC5863296 DOI: 10.1155/2018/5684679] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 01/29/2018] [Accepted: 02/05/2018] [Indexed: 12/15/2022]
Abstract
Twenty years ago, Dr. François A. Auger, the founder of the Laboratory of Experimental Organogenesis (LOEX), introduced the self-assembly technique. This innovative technique relies on the ability of dermal fibroblasts to produce and assemble their own extracellular matrix, differing from all other tissue-engineering techniques that use preformed synthetic scaffolds. Nevertheless, the use of the self-assembly technique was limited for a long time due to its main drawbacks: time and cost. Recent scientific breakthroughs have addressed these limitations. New protocol modifications that aim at increasing the rate of extracellular matrix formation have been proposed to reduce the production costs and laboratory handling time of engineered tissues. Moreover, the introduction of vascularization strategies in vitro permits the formation of capillary-like networks within reconstructed tissues. These optimization strategies enable the large-scale production of inexpensive native-like substitutes using the self-assembly technique. These substitutes can be used to reconstruct three-dimensional models free of exogenous materials for clinical and fundamental applications.
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31
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Pillet F, Gibot L, Catrain A, Kolosnjaj-Tabi J, Courtois K, Chretiennot T, Bellard E, Tarayre J, Golzio M, Vezinet R, Rols MP. High power electromagnetic pulse applicators for evaluation of biological effects induced by electromagnetic radiation waves. RSC Adv 2018; 8:16319-16329. [PMID: 35542224 PMCID: PMC9080243 DOI: 10.1039/c8ra00330k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 04/25/2018] [Indexed: 11/21/2022] Open
Abstract
Micro applicators for real-time observation of electromagnetic radiation waves effects on giant unilamellar vesicles and mammalian cells.
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Affiliation(s)
- Flavien Pillet
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
| | - Laure Gibot
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
| | | | - Jelena Kolosnjaj-Tabi
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
| | - Kristelle Courtois
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
| | | | - Elisabeth Bellard
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
| | | | - Muriel Golzio
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
| | | | - Marie-Pierre Rols
- Institut de Pharmacologie et de Biologie Structurale, IPBS
- Université de Toulouse
- CNRS
- UPS
- Toulouse
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32
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Li MT, Ruehle MA, Stevens HY, Servies N, Willett NJ, Karthikeyakannan S, Warren GL, Guldberg RE, Krishnan L. * Skeletal Myoblast-Seeded Vascularized Tissue Scaffolds in the Treatment of a Large Volumetric Muscle Defect in the Rat Biceps Femoris Muscle. Tissue Eng Part A 2017; 23:989-1000. [PMID: 28372522 DOI: 10.1089/ten.tea.2016.0523] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
High velocity impact injuries can often result in loss of large skeletal muscle mass, creating defects devoid of matrix, cells, and vasculature. Functional regeneration within these regions of large volumetric muscle loss (VML) continues to be a significant clinical challenge. Large cell-seeded, space-filling tissue-engineered constructs that may augment regeneration require adequate vascularization to maintain cell viability. However, the long-term effect of improved vascularization and the effect of addition of myoblasts to vascularized constructs have not been determined in large VMLs. Here, our objective was to create a new VML model, consisting of a full-thickness, single muscle defect, in the rat biceps femoris muscle, and evaluate the ability of myoblast-seeded vascularized collagen hydrogel constructs to augment VML regeneration. Adipose-derived microvessels were cultured with or without myoblasts to form vascular networks within collagen constructs. In the animal model, the VML injury was created in the left hind limb, and treated with the harvested autograft itself, constructs with microvessel fragments (MVF) only, constructs with microvessels and myoblasts (MVF+Myoblasts), or left empty. We evaluated the formation of vascular networks in vitro by light microscopy, and the capacity of vascularized constructs to augment early revascularization and muscle regeneration in the VML using perfusion angiography and creatine kinase activity, respectively. Myoblasts (Pax7+) were able to differentiate into myotubes (sarcomeric myosin MF20+) in vitro. The MVF+Myoblast group showed longer and more branched microvascular networks than the MVF group in vitro, but showed similar overall defect site vascular volumes at 2 weeks postimplantation by microcomputed tomography angiography. However, a larger number of small-diameter vessels were observed in the vascularized construct-treated groups. Yet, both vascularized implant groups showed primarily fibrotic tissue with adipose infiltration, poor maintenance of tissue volume within the VML, and little muscle regeneration. These data suggest that while vascularization may play an important supportive role, other factors besides adequate vascularity may determine the fate of regenerating volumetric muscle defects.
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Affiliation(s)
- Mon-Tzu Li
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia .,2 Department of Biomedical Engineering, Emory University , Atlanta, Georgia
| | - Marissa A Ruehle
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia .,2 Department of Biomedical Engineering, Emory University , Atlanta, Georgia
| | - Hazel Y Stevens
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia
| | - Nick Servies
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia
| | - Nick J Willett
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia .,2 Department of Biomedical Engineering, Emory University , Atlanta, Georgia .,3 Department of Orthopaedics, Atlanta Veteran's Affairs Medical Center , Decatur, Georgia
| | - Sukhita Karthikeyakannan
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia
| | - Gordon L Warren
- 4 Department of Physical Therapy, Georgia State University , Atlanta, Georgia
| | - Robert E Guldberg
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia
| | - Laxminarayanan Krishnan
- 1 Georgia Institute of Technology, Petit Institute for Bioengineering and Biosciences , Atlanta, Georgia
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Abaci HE, Guo Z, Doucet Y, Jacków J, Christiano A. Next generation human skin constructs as advanced tools for drug development. Exp Biol Med (Maywood) 2017; 242:1657-1668. [PMID: 28592171 DOI: 10.1177/1535370217712690] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Many diseases, as well as side effects of drugs, manifest themselves through skin symptoms. Skin is a complex tissue that hosts various specialized cell types and performs many roles including physical barrier, immune and sensory functions. Therefore, modeling skin in vitro presents technical challenges for tissue engineering. Since the first attempts at engineering human epidermis in 1970s, there has been a growing interest in generating full-thickness skin constructs mimicking physiological functions by incorporating various skin components, such as vasculature and melanocytes for pigmentation. Development of biomimetic in vitro human skin models with these physiological functions provides a new tool for drug discovery, disease modeling, regenerative medicine and basic research for skin biology. This goal, however, has long been delayed by the limited availability of different cell types, the challenges in establishing co-culture conditions, and the ability to recapitulate the 3D anatomy of the skin. Recent breakthroughs in induced pluripotent stem cell (iPSC) technology and microfabrication techniques such as 3D-printing have allowed for building more reliable and complex in vitro skin models for pharmaceutical screening. In this review, we focus on the current developments and prevailing challenges in generating skin constructs with vasculature, skin appendages such as hair follicles, pigmentation, immune response, innervation, and hypodermis. Furthermore, we discuss the promising advances that iPSC technology offers in order to generate in vitro models of genetic skin diseases, such as epidermolysis bullosa and psoriasis. We also discuss how future integration of the next generation human skin constructs onto microfluidic platforms along with other tissues could revolutionize the early stages of drug development by creating reliable evaluation of patient-specific effects of pharmaceutical agents. Impact statement Skin is a complex tissue that hosts various specialized cell types and performs many roles including barrier, immune, and sensory functions. For human-relevant drug testing, there has been a growing interest in building more physiological skin constructs by incorporating different skin components, such as vasculature, appendages, pigment, innervation, and adipose tissue. This paper provides an overview of the strategies to build complex human skin constructs that can faithfully recapitulate human skin and thus can be used in drug development targeting skin diseases. In particular, we discuss recent developments and remaining challenges in incorporating various skin components, availability of iPSC-derived skin cell types and in vitro skin disease models. In addition, we provide insights on the future integration of these complex skin models with other organs on microfluidic platforms as well as potential readout technologies for high-throughput drug screening.
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Affiliation(s)
- H E Abaci
- 1 Department of Dermatology, Columbia University Medical Center, New York, NY 10032, USA
| | - Zongyou Guo
- 1 Department of Dermatology, Columbia University Medical Center, New York, NY 10032, USA
| | - Yanne Doucet
- 1 Department of Dermatology, Columbia University Medical Center, New York, NY 10032, USA
| | - Joanna Jacków
- 1 Department of Dermatology, Columbia University Medical Center, New York, NY 10032, USA
| | - Angela Christiano
- 1 Department of Dermatology, Columbia University Medical Center, New York, NY 10032, USA.,2 Department of Genetics and Development, Columbia University Medical Center, New York, NY 10032, USA
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Akagi T, Nagura M, Hiura A, Kojima H, Akashi M. Construction of Three-Dimensional Dermo–Epidermal Skin Equivalents Using Cell Coating Technology and Their Utilization as Alternative Skin for Permeation Studies and Skin Irritation Tests. Tissue Eng Part A 2017; 23:481-490. [DOI: 10.1089/ten.tea.2016.0529] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Takami Akagi
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Mayuka Nagura
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
- BioMedical Technology HYBRID Co., Ltd., Kagoshima, Japan
| | - Ayami Hiura
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Hajime Kojima
- Biological Safety Research Center, National Institute of Health Sciences, Tokyo, Japan
| | - Mitsuru Akashi
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
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Pillet F, Gibot L, Madi M, Rols MP, Dague E. Importance of endogenous extracellular matrix in biomechanical properties of human skin model. Biofabrication 2017; 9:025017. [PMID: 28493850 DOI: 10.1088/1758-5090/aa6ed5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The physical and mechanical properties of cells modulate their behavior such proliferation rate, migration and extracellular matrix remodeling. In order to study cell behavior in a tissue-like environment in vitro, it is of utmost importance to develop biologically and physically relevant 3D cell models. Here, we characterized the physical properties of a single cell type growing in configurations of increasing complexity. From one human skin biopsy, primary dermal fibroblasts were isolated and seeded to give monolayer (2D model), spheroid (3D model poor in extracellular matrix) and tissue-engineered cell sheet (3D model rich in endogenous extracellular matrix). Living native human dermis tissue was used as a gold standard. Nanomechanical and viscoelastic properties at the cell scale were measured by atomic force microscopy (AFM) while biphoton microscopy allowed collagen detection by second harmonic generation and scanning electron microscopy helped in model morphological characterization. In all models, fibroblasts presented a similar typical elongated cell shape, with a cytoskeleton well-arranged along the long axis of the cell. However, elastic moduli of the tissue-engineered cell sheet and native dermis tissue were similar and statistically lower than monolayer and spheroid models. We successfully carried out AFM force measurements on 3D models such as spheroids and tissue-engineered cell sheets, as well as on living native human tissue. We demonstrated that a tissue-engineered dermal model recapitulates the mechanical properties of human native dermal tissue unlike the classically used monolayer and spheroid models. Furthermore, we give statistical evidence to indicate a correlation between cell mechanical properties and the presence of collagens in the models studied.
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Affiliation(s)
- Flavien Pillet
- Institut de Pharmacologie et de Biologie Structurale, Université de Toulouse, CNRS, UPS, Toulouse, France
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Gibot L, Galbraith T, Bourland J, Rogic A, Skobe M, Auger FA. Tissue-engineered 3D human lymphatic microvascular network for in vitro studies of lymphangiogenesis. Nat Protoc 2017; 12:1077-1088. [DOI: 10.1038/nprot.2017.025] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Abstract
Vascular tissue engineering has significant potential to make a major impact on a wide array of clinical problems. Continued progress in understanding basic vascular biology will be invaluable in making further advancements. Past and current achievements in tissue engineering of microvasculature to perfuse organ specific constructs, small vessels for dialysis grafts, and modified synthetic and pediatric large caliber-vessel grafts will be discussed. An emphasis will be placed on clinical trial results with small and large-caliber vessel grafts. Challenges to achieving engineered constructs that satisfy the physiologic, immunologic, and manufacturing demands of engineered vasculature will be explored.
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Carayon C, Ghodbane A, Gibot L, Dumur R, Wang J, Saffon N, Rols MP, Solntsev KM, Fery-Forgues S. Conjugates of Benzoxazole and GFP Chromophore with Aggregation-Induced Enhanced Emission: Influence of the Chain Length on the Formation of Particles and on the Dye Uptake by Living Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6602-6612. [PMID: 27977082 DOI: 10.1002/smll.201602799] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 09/13/2016] [Indexed: 06/06/2023]
Abstract
Six conjugates of benzoxazole and green fluorescent protein chromophore that differ by the length of their alkyl chain (from C1 to C16) are investigated. They exhibit rigidofluorochromism and clear aggregation-induced emission enhancement (AIEE) behavior with emission in the orange-red that is specific to the solid state. A preparation method based on solvent exchange is used to prepare particles. The self-association properties of these molecules depend on the length of the alkyl chain. Microfibers, platelets, and rounded microparticles are successively obtained by increasing the chain length. The same method is used to prepare nanoparticles (NPs) that are fully characterized. In particular, homogeneous populations of stable NPs measuring around 70 nm are obtained with the analogs whose chains contain four to eight carbon atoms. The behavior with respect to living cells is also influenced by the nature of the compounds. Only the dyes with intermediate hydrophobicity are efficiently uptaken by both normal and tumor cells, and fluorescence only originates from dispersed dye molecules. There is no evidence for incorporation of NPs into cells. This work shows that small variations of the chemical structure must be taken into account for making the best use of AIEE compounds in view of precise applications.
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Affiliation(s)
- Chantal Carayon
- SPCMIB, UMR5068, CNRS-Université Paul Sabatier-Toulouse III, 118 route de Narbonne, F31062, Toulouse, France
| | | | - Laure Gibot
- Equipe de Biophysique Cellulaire, IPBS-CNRS UMR 5089, 205 route de Narbonne, BP 64182, F31077, Toulouse Cedex, France
| | - Rémy Dumur
- ITAV, USR 3505, CNRS-Université de Toulouse, F31106, Toulouse, France
| | - Jinhui Wang
- SPCMIB, UMR5068, CNRS-Université Paul Sabatier-Toulouse III, 118 route de Narbonne, F31062, Toulouse, France
| | - Nathalie Saffon
- Service Commun RX, Institut de Chimie de Toulouse, ICT- FR2599, Université Paul Sabatier, F31062, Toulouse Cedex 9, France
| | - Marie-Pierre Rols
- Equipe de Biophysique Cellulaire, IPBS-CNRS UMR 5089, 205 route de Narbonne, BP 64182, F31077, Toulouse Cedex, France
| | - Kyril M Solntsev
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA, 30332-0400, USA
- Olis Inc., 130 Conway Dr, Bogart, GA, 30622, USA
| | - Suzanne Fery-Forgues
- SPCMIB, UMR5068, CNRS-Université Paul Sabatier-Toulouse III, 118 route de Narbonne, F31062, Toulouse, France
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Kim S, Kawai T, Wang D, Yang Y. Engineering a Dual-Layer Chitosan-Lactide Hydrogel To Create Endothelial Cell Aggregate-Induced Microvascular Networks In Vitro and Increase Blood Perfusion In Vivo. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19245-19255. [PMID: 27399928 DOI: 10.1021/acsami.6b04431] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Here, we report the use of chemically cross-linked and photo-cross-linked hydrogels to engineer human umbilical vein endothelial cell (HUVEC) aggregate-induced microvascular networks to increase blood perfusion in vivo. First, we studied the effect of chemically cross-linked and photo-cross-linked chitosan-lactide hydrogels on stiffness, degradation rates, and HUVEC behaviors. The photo-cross-linked hydrogel was relatively stiff (E = ∼15 kPa) and possessed more compact networks, denser surface texture, and lower enzymatic degradation rates than the relatively soft, chemically cross-linked hydrogel (E = ∼2 kPa). While both hydrogels exhibited nontoxicity, the soft chemically cross-linked hydrogels expedited the formation of cell aggregates compared to the photo-cross-linked hydrogels. Cells on the less stiff, chemically cross-linked hydrogels expressed more matrix metalloproteinase (MMP) activity than the stiffer, photo-cross-linked hydrogel. This difference in MMP activity resulted in a more dramatic decrease in mechanical stiffness after 3 days of incubation for the chemically cross-linked hydrogel, as compared to the photo-cross-linked one. After determining the physical and biological properties of each hydrogel, we accordingly engineered a dual-layer hydrogel construct consisting of the relatively soft, chemically cross-linked hydrogel layer for HUVEC encapsulation, and the relatively stiff, acellular, photo-cross-linked hydrogel for retention of cell-laden microvasculature above. This dual-layer hydrogel construct enabled a lasting HUVEC aggregate-induced microvascular network due to the combination of stable substrate, enriched cell adhesion molecules, and extracellular matrix proteins. We tested the dual-layer hydrogel construct in a mouse model of hind-limb ischemia, where the HUVEC aggregate-induced microvascular networks significantly enhanced blood perfusion rate to ischemic legs and decreased tissue necrosis compared with both no treatment and nonaggregated HUVEC-loaded hydrogels within 2 weeks. This study suggests an effective means for regulating hydrogel properties to facilitate a stable, HUVEC aggregate-induced microvascular network for a variety of vascularized tissue applications.
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Affiliation(s)
| | - Toshiyuki Kawai
- Department of Orthopedic Surgery, Kyoto University , 54 Kawaharacho, Shogoin, Sakyo-ku Kyoto 606-8507, Japan
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Abaci HE, Guo Z, Coffman A, Gillette B, Lee WH, Sia SK, Christiano AM. Human Skin Constructs with Spatially Controlled Vasculature Using Primary and iPSC-Derived Endothelial Cells. Adv Healthc Mater 2016; 5:1800-7. [PMID: 27333469 PMCID: PMC5031081 DOI: 10.1002/adhm.201500936] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 04/03/2016] [Indexed: 12/28/2022]
Abstract
Vascularization of engineered human skin constructs is crucial for recapitulation of systemic drug delivery and for their long-term survival, functionality, and viable engraftment. In this study, the latest microfabrication techniques are used and a novel bioengineering approach is established to micropattern spatially controlled and perfusable vascular networks in 3D human skin equivalents using both primary and induced pluripotent stem cell (iPSC)-derived endothelial cells. Using 3D printing technology makes it possible to control the geometry of the micropatterned vascular networks. It is verified that vascularized human skin equivalents (vHSEs) can form a robust epidermis and establish an endothelial barrier function, which allows for the recapitulation of both topical and systemic delivery of drugs. In addition, the therapeutic potential of vHSEs for cutaneous wounds on immunodeficient mice is examined and it is demonstrated that vHSEs can both promote and guide neovascularization during wound healing. Overall, this innovative bioengineering approach can enable in vitro evaluation of topical and systemic drug delivery as well as improve the potential of engineered skin constructs to be used as a potential therapeutic option for the treatment of cutaneous wounds.
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Affiliation(s)
- Hasan E. Abaci
- Department of Dermatology, Columbia University Medical Center, New York
| | - Zongyou Guo
- Department of Dermatology, Columbia University Medical Center, New York
| | - Abigail Coffman
- Department of Dermatology, Columbia University Medical Center, New York
| | - Brian Gillette
- Department of Biomedical Engineering, Columbia University, New York
| | - Wen-han Lee
- Department of Biomedical Engineering, Columbia University, New York
| | - Samuel K. Sia
- Department of Biomedical Engineering, Columbia University, New York
| | - Angela M. Christiano
- Department of Dermatology, Columbia University Medical Center, New York
- Department of Genetics and Development, Columbia University Medical Center, New York
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Dooley K, Devalliere J, Uygun BE, Yarmush ML. Functionalized Biopolymer Particles Enhance Performance of a Tissue-Protective Peptide under Proteolytic and Thermal Stress. Biomacromolecules 2016; 17:2073-9. [DOI: 10.1021/acs.biomac.6b00280] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Kevin Dooley
- Center for Engineering
in Medicine, Massachusetts General Hospital, Harvard Medical School,
Shriners Hospitals for Children, Boston, Massachusetts 02114, United States
| | - Julie Devalliere
- Center for Engineering
in Medicine, Massachusetts General Hospital, Harvard Medical School,
Shriners Hospitals for Children, Boston, Massachusetts 02114, United States
| | - Basak E. Uygun
- Center for Engineering
in Medicine, Massachusetts General Hospital, Harvard Medical School,
Shriners Hospitals for Children, Boston, Massachusetts 02114, United States
| | - Martin L. Yarmush
- Center for Engineering
in Medicine, Massachusetts General Hospital, Harvard Medical School,
Shriners Hospitals for Children, Boston, Massachusetts 02114, United States
- Department
of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854, United States
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Comparison of Laser Doppler and Laser-Assisted Indocyanine Green Angiography Prediction of Flap Survival in a Novel Modification of the McFarlane Flap. Ann Plast Surg 2016; 75:102-7. [PMID: 24401807 DOI: 10.1097/sap.0000000000000013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The McFarlane rat ischemic dorsal skin flap model has been commonly used for clinical vector studies, as well as the testing of noninvasive diagnostics. However, variability of this model secondary to flap contact with the wound bed has led many to question its validity. Here we present a novel modification to the McFarlane skin flap using sterile silicone. We also use this model to test the prognostic efficacy of laser-assisted indocyanine green (ICG) angiography and laser Doppler imaging (LDI). METHODOLOGY A 3 × 9-cm dorsal skin flap with a cranially based pedicle was created, centered 1 cm distal to the scapulae. The flap was undermined, and in one of the 2 groups, a sterile silicone sheet was placed onto the wound bed. All flaps were then reapproximated with sutures 1-cm intervals. Clinical assessment and perfusion imaging was performed immediately postoperative, and at 24, 48, and 72 hours postsurgery. Postoperative day 7 clinical assessment was obtained before euthanasia. RESULTS A comparative study using silicone blocked versus unblocked models (n = 6 per group) showed that, clinically, both models had equivalent flap survival [8.5 (0.913) vs 9.5 (1.01) cm]. However, a statistically significant increase in perfusion in the mid-third of unblocked models was observed on POD3 [20.28% (2.7%) vs blocked 13.45% (2.5%), P < 0.05], with a similar increase in the distal third on POD7 [18.73% (2.064%) vs 10.91% (4.19%), P < 0.05]. A prognostic study comparing LDI and ICG angiography prediction of POD7 survival at early time points (n = 10) found that LDI underpredicted flap survival at early time points [84.2% (12.03%) on POD0, 87.35% (16.11%) on POD1]. In contrast, ICG was more proficient [100.1% (10.1%) on POD0]. CONCLUSIONS We present a modification of the McFarlane skin flap model that results in similar clinical results, but with a noted reduction in perfusion inconsistencies noted in unblocked models. The ICG angiography is superior to LDI in predicting POD7 flap necrosis within the first 48 hours postinjury. Future work will focus on histologic validation of our model, and vector efficacy testing.
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Roudsari LC, West JL. Studying the influence of angiogenesis in in vitro cancer model systems. Adv Drug Deliv Rev 2016; 97:250-9. [PMID: 26571106 DOI: 10.1016/j.addr.2015.11.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/03/2015] [Accepted: 11/04/2015] [Indexed: 12/18/2022]
Abstract
Tumor angiogenesis is a hallmark of cancer that has been identified as a critical component of cancer progression, facilitating rapid tumor growth and metastasis. Anti-angiogenic therapies have exhibited only modest clinical success, highlighting a need for better models that can be used to gain a more thorough understanding of tumor angiogenesis and screen potential therapeutics more accurately. This review explores how recent progress in in vitro cancer and vascular models individually can be applied to the development of in vitro tumor angiogenesis models. Current in vitro tumor angiogenesis models are also discussed, with a focus on aspects of the process that have been successfully recapitulated and opportunities for applying new technologies to expand model complexity to better represent the tumor microenvironment. Continued advances in vascularized tumor models will provide tools to identify novel therapeutic targets and validate their therapeutic benefit.
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Affiliation(s)
- Laila C Roudsari
- Department of Biomedical Engineering, Duke University, Room 1427, Fitzpatrick CIEMAS, 101 Science Drive, Campus Box 90281, Durham, NC 27708, USA.
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, Room 1427, Fitzpatrick CIEMAS, 101 Science Drive, Campus Box 90281, Durham, NC 27708, USA.
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Cell-based approach for 3D reconstruction of lymphatic capillaries in vitro reveals distinct functions of HGF and VEGF-C in lymphangiogenesis. Biomaterials 2015; 78:129-39. [PMID: 26694987 DOI: 10.1016/j.biomaterials.2015.11.027] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 11/13/2015] [Accepted: 11/16/2015] [Indexed: 01/13/2023]
Abstract
Regeneration of lymphatic vessels is important for treatment of various disorders of lymphatic system and for restoration of lymphatic function after surgery. We have developed a method for generating a human 3D lymphatic vascular construct. In this system, human lymphatic endothelial cells, co-cultured with fibroblasts, spontaneously organized into a stable 3D lymphatic capillary network without the use of any exogenous factors. In vitro-generated lymphatic capillaries exhibited the major molecular and ultra-structural features of native, human lymphatic microvasculature: branches in the three dimensions, wide lumen, blind ends, overlapping borders, adherens and tight junctions, anchoring filaments, lack of mural cells, and poorly developed basement membrane. Furthermore, we show that fibroblast-derived VEGF-C and HGF cooperate in the formation of lymphatic vasculature by activating ERK1/2 signaling, and demonstrate distinct functions of HGF/c-Met and VEGF-C/VEGFR-3 in lymphangiogenesis. This lymphatic vascular construct is expected to facilitate studies of lymphangiogenesis in vitro and it holds promise as a strategy for regeneration of lymphatic vessels and treatment of lymphatic disorders in various conditions.
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45
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Gibot L, Rols MP. Gene transfer by pulsed electric field is highly promising in cutaneous wound healing. Expert Opin Biol Ther 2015; 16:67-77. [DOI: 10.1517/14712598.2016.1098615] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Vallières K, Laterreur V, Tondreau MY, Ruel J, Germain L, Fradette J, Auger FA. Human adipose-derived stromal cells for the production of completely autologous self-assembled tissue-engineered vascular substitutes. Acta Biomater 2015; 24:209-19. [PMID: 26086693 DOI: 10.1016/j.actbio.2015.06.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/16/2015] [Accepted: 06/09/2015] [Indexed: 12/13/2022]
Abstract
There is a clinical need for small-diameter vascular substitutes, notably for coronary and peripheral artery bypass procedures since these surgeries are limited by the availability of grafting material. This study reports the characterization of a novel autologous tissue-engineered vascular substitute (TEVS) produced in 10weeks exclusively from human adipose-derived stromal cells (ASC) self-assembly, and its comparison to an established model made from dermal fibroblasts (DF). Briefly, ASC and DF were cultured with ascorbate to form cell sheets subsequently rolled around a mandrel. These TEVS were further cultured as a maturation period before undergoing mechanical testing, histological analyses and endothelialization. No significant differences were measured in burst pressure, suture strength, failure load, elastic modulus and failure strain according to the cell type used to produce the TEVS. Indeed, ASC- and DF-TEVS both displayed burst pressures well above maximal physiological blood pressure. However, ASC-TEVS were 1.40-fold more compliant than DF-TEVS. The structural matrix, comprising collagens type I and III, fibronectin and elastin, was very similar in all TEVS although histological analysis showed a wavier and less dense collagen matrix in ASC-TEVS. This difference in collagen organization could explain their higher compliance. Finally, human umbilical vein endothelial cells (HUVEC) successfully formed a confluent endothelium on ASC and DF cell sheets, as well as inside ASC-TEVS. Our results demonstrated that ASC are an alternative cell source for the production of TEVS displaying good mechanical properties and appropriate endothelialization.
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Affiliation(s)
- Karine Vallières
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Véronique Laterreur
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Mechanical Engineering, Faculty of Science and Engineering, Université Laval, Québec, QC, Canada
| | - Maxime Y Tondreau
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Jean Ruel
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Mechanical Engineering, Faculty of Science and Engineering, Université Laval, Québec, QC, Canada
| | - Lucie Germain
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Julie Fradette
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - François A Auger
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Division of Regenerative Medicine, CHU de Québec Research Centre - Université Laval, Québec, QC, Canada; Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC, Canada.
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Chabaud S, Rousseau A, Marcoux TL, Bolduc S. Inexpensive production of near-native engineered stromas. J Tissue Eng Regen Med 2015; 11:1377-1389. [PMID: 26010652 DOI: 10.1002/term.2036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 02/23/2015] [Accepted: 04/22/2015] [Indexed: 01/10/2023]
Abstract
Although the self-assembly approach is an efficient method for the production of engineered physiological and pathological tissues, avoiding the use of exogenous materials, it nevertheless remains expensive and requires dexterity, which are features incompatible with large-scale production. We propose a modification to this technique to make easier the production of mesenchymal compartment, to reduce the cost and to improve the histological quality of the self-assembled tissues. The stroma produced by this novel approach allowed epithelial cell differentiation, resulting in a pseudostratified epithelium that shared several features with native tissues. The incorporation of endothelial cells in the reconstructed mesenchyme formed a three-dimensional capillary-like network, positive for CD31 and von Willebrand factor and surrounded by NG2 positive cells. It could limit self-contraction of the resulting tissue by recruiting α-Smooth Muscle Actin positive cells. With this new technique, which is relatively inexpensive and easy to use in a research laboratory set-up, near-native stromas can now be produced with minimal handling time. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
| | | | | | - Stéphane Bolduc
- LOEX/CMDGT, Université Laval, Quebec, Canada
- Department of Surgery, Université Laval, Quebec, Canada
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Marshall LE, Goliwas KF, Miller LM, Penman AD, Frost AR, Berry JL. Flow-perfusion bioreactor system for engineered breast cancer surrogates to be used in preclinical testing. J Tissue Eng Regen Med 2015; 11:1242-1250. [PMID: 25950420 DOI: 10.1002/term.2026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 01/28/2015] [Accepted: 03/17/2015] [Indexed: 12/21/2022]
Abstract
There is a need for preclinical testing systems that predict the efficacy, safety and pharmacokinetics of cancer therapies better than existing in vitro and in vivo animal models. An approach to the development of predictive in vitro systems is to more closely recapitulate the cellular and spatial complexity of human cancers. One limitation of using current in vitro systems to model cancers is the lack of an appropriately large volume to accommodate the development of this complexity over time. To address this limitation, we have designed and constructed a novel flow-perfusion bioreactor system that can support large-volume, engineered tissue comprised of multicellular cancer surrogates by modifying current microfluidic devices. Key features of this technology are a three-dimensional (3D) volume (1.2 cm3 ) that has greater tissue thickness than is utilized in existing microfluidic systems and the ability to perfuse the volume, enabling the development of realistic tumour geometry. The constructs were fabricated by infiltrating porous carbon foams with an extracellular matrix (ECM) hydrogel and engineering through-microchannels. The carbon foam structurally supported the hydrogel and microchannel patency for up to 161 h. The ECM hydrogel was shown to adhere to the carbon foam and polydimethylsiloxane flow chamber, which housed the hydrogel-foam construct, when surfaces were coated with glutaraldehyde (carbon foam) and nitric acid (polydimethylsiloxane). Additionally, the viability of breast cancer cells and fibroblasts was higher in the presence of perfused microchannels in comparison to similar preparations without microchannels or perfusion. Therefore, the flow-perfusion bioreactor system supports cell viability in volume and stromal contexts that are physiologically-relevant. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Lauren E Marshall
- Department of Biomedical Engineering, University of Alabama at Birmingham, AL, USA
| | - Kayla F Goliwas
- Department of Pathology, University of Alabama at Birmingham, AL, USA
| | - Lindsay M Miller
- Department of Biomedical Engineering, University of Alabama at Birmingham, AL, USA
| | | | - Andra R Frost
- Department of Pathology, University of Alabama at Birmingham, AL, USA
| | - Joel L Berry
- Department of Biomedical Engineering, University of Alabama at Birmingham, AL, USA
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Madi M, Rols MP, Gibot L. Efficient In Vitro Electropermeabilization of Reconstructed Human Dermal Tissue. J Membr Biol 2015; 248:903-8. [DOI: 10.1007/s00232-015-9791-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 03/12/2015] [Indexed: 12/28/2022]
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Rytlewski JA, Alejandra Aldon M, Lewis EW, Suggs LJ. Mechanisms of tubulogenesis and endothelial phenotype expression by MSCs. Microvasc Res 2015; 99:26-35. [PMID: 25711526 DOI: 10.1016/j.mvr.2015.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 12/03/2014] [Accepted: 02/11/2015] [Indexed: 11/17/2022]
Abstract
Stem cell-based therapies are a promising new avenue for treating ischemic disease and chronic wounds. Mesenchymal stem cells (MSCs) have a proven ability to augment the neovascularization processes necessary for wound healing and are widely popular as an autologous source of progenitor cells. Our lab has previously reported on PEGylated fibrin as a unique hydrogel that promotes spontaneous tubulogenesis of encapsulated MSCs without exogenous factors. However, the mechanisms underlying this process have remained unknown. To better understand the therapeutic value of PEGylated fibrin delivery of MSCs, we sought to clarify the relationship between biomaterial properties and cell behavior. Here we find that fibrin PEGylation does not dramatically alter the macroscopic mechanical properties of the fibrin-based matrix (less than 10% difference). It does, however, dramatically reduce the rate of diffusion through the gel matrix. PEGylated fibrin enhances the tubulogenic growth of encapsulated MSCs demonstrating fluid-filled lumens by interconnected MSCs. Image analysis gave a value of 4320 ± 1770 μm total network length versus 618 ± 443 μm for unmodified fibrin. PEGylation promotes the endothelial phenotype of encapsulated MSCs--compared to unmodified fibrin--as evidenced by higher levels of endothelial markers (von Willebrand factor, 2.2-fold; vascular endothelial cadherin, 1.8-fold) and vascular endothelial growth factor (VEGF, up to 1.8-fold). Prospective analysis of underlying molecular pathways demonstrated that this endothelial-like MSC behavior is sensitively modulated by hypoxic stress, but not VEGF supplementation as evidenced by a significant increase in VEGF and MMP-2 secretion per cell under hypoxia. Further gain-of-function studies under hypoxic stress demonstrated that hypoxia culture of MSCs in unmodified fibrin could increase both vWF and VE-cadherin levels to values that were not significantly different than cells cultured in PEGylated fibrin. This result corroborated our hypothesis that the diffusion-limited environment of PEGylated fibrin is augmenting endothelial differentiation cues provided by unmodified fibrin. However, MSC networks lack platelet endothelial cell adhesion molecule-1 (PECAM-1) expression, which indicates incomplete differentiation towards an endothelial cell type. Collectively, the data here supports a revised understanding of MSC-derived neovascularization that contextualizes their behavior and utility as a hybrid endothelial-stromal cell type, with mixed characteristics of both populations.
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Affiliation(s)
- Julie A Rytlewski
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton, Stop C0800, Austin, TX 78712, USA.
| | - M Alejandra Aldon
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton, Stop C0800, Austin, TX 78712, USA.
| | - Evan W Lewis
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton, Stop C0800, Austin, TX 78712, USA.
| | - Laura J Suggs
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton, Stop C0800, Austin, TX 78712, USA.
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