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Crnic A, Rohringer S, Tyschuk T, Holnthoner W. Engineering blood and lymphatic microvascular networks. Atherosclerosis 2024; 393:117458. [PMID: 38320921 DOI: 10.1016/j.atherosclerosis.2024.117458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/18/2023] [Accepted: 01/16/2024] [Indexed: 02/08/2024]
Abstract
The human vasculature plays a crucial role in the blood supply of nearly all organs as well as the drainage of the interstitial fluid. Consequently, if these physiological systems go awry, pathological changes might occur. Hence, the regeneration of existing vessels, as well as approaches to engineer artificial blood and lymphatic structures represent current challenges within the field of vascular research. In this review, we provide an overview of both the vascular blood circulation and the long-time neglected but equally important lymphatic system, with regard to their organotypic vasculature. We summarize the current knowledge within the field of vascular tissue engineering focusing on the design of co-culture systems, thereby mainly discussing suitable cell types, scaffold design and disease models. This review will mainly focus on addressing those subjects concerning atherosclerosis. Moreover, current technological approaches such as vascular organ-on-a-chip models and microfluidic devices will be discussed.
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Affiliation(s)
- Aldina Crnic
- Ludwig-Boltzmann-Institute for Traumatology, The Research Centre in Cooperation with AUVA, Donaueschingenstraße 13, 1020 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1020 Vienna, Austria
| | - Sabrina Rohringer
- Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1020 Vienna, Austria; Center for Biomedical Research and Translational Surgery, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Tatiana Tyschuk
- Ludwig-Boltzmann-Institute for Traumatology, The Research Centre in Cooperation with AUVA, Donaueschingenstraße 13, 1020 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1020 Vienna, Austria
| | - Wolfgang Holnthoner
- Ludwig-Boltzmann-Institute for Traumatology, The Research Centre in Cooperation with AUVA, Donaueschingenstraße 13, 1020 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Donaueschingenstraße 13, 1020 Vienna, Austria.
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Evrard R, Feyens M, Manon J, Lengelé B, Cartiaux O, Schubert T. Impact of NaOH based perfusion-decellularization protocol on mechanical resistance of structural bone allografts. Connect Tissue Res 2024:1-14. [PMID: 38781097 DOI: 10.1080/03008207.2024.2356586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024]
Abstract
INTRODUCTION To mitigate the post-operative complication rates associated with massive bone allografts, tissue engineering techniques have been employed to decellularize entire bones through perfusion with a sequence of solvents. Mechanical assessment was performed in order to compare conventional massive bone allografts and perfusion/decellularized massive bone allografts. MATERIAL AND METHODS Ten porcine femurs were included. Five were decellularized by perfusion. The remaining 5 were left untreated as the "control" group. Biomechanical testing was conducted on each bone, encompassing five different assessments: screw pull-out, 3-points bending, torsion, compression and Vickers indentation. RESULTS Under the experimental conditions of this study, all five destructive tested variables (maximum force until screw pull-out, maximum elongation until screw pull-out, energy to pull out the screw, fracture resistance in flexion and maximum constrain of compression) were statistically significantly superior in the control group. All seven nondestructive variables (Young's modulus in flexion, Young's modulus in shear stress, Young's modulus in compression, Elastic conventional limit in compression, lengthening to rupture in compression, resilience in compression and Vickers Hardness) showed no significant difference. DISCUSSION Descriptive statistical results suggest a tendency for the biomechanical characteristics of decellularized bone to decrease compared with the control group. However, statistical inferences demonstrated a slight significant superiority of the control group with destructive mechanical stresses. Nondestructive mechanical tests (within the elastic phase of Young's modulus) were not significantly different.
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Affiliation(s)
- Robin Evrard
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - Maxendre Feyens
- ECAM Brussels Engineering School, Haute Ecole ICHEC-ECAM-ISFSC, Bruxelles, Belgique
| | - Julie Manon
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
| | - Benoit Lengelé
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Plastique, Reconstructrice et Esthétique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - Olivier Cartiaux
- ECAM Brussels Engineering School, Haute Ecole ICHEC-ECAM-ISFSC, Bruxelles, Belgique
| | - Thomas Schubert
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
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Evrard R, Manon J, Rafferty C, Fieve L, Cornu O, Kirchgesner T, Lecouvet FE, Schubert T, Lengele B. Vascular study of decellularized porcine long bones: Characterization of a tissue engineering model. Bone 2024; 182:117073. [PMID: 38493932 DOI: 10.1016/j.bone.2024.117073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/12/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
INTRODUCTION Massive bone allografts enable the reconstruction of critical bone defects in numerous conditions (e.g. tumoral, infection or trauma). Unfortunately, their biological integration remains insufficient and the reconstruction may suffer from several postoperative complications. Perfusion-decellularization emerges as a tissue engineering potential solution to enhance osseointegration. Therefore, an intrinsic vascular study of this novel tissue engineering tool becomes essential to understand its efficacy and applicability. MATERIAL AND METHODS 32 porcine long bones (humeri and femurs) were used to assess the quality of their vascular network prior and after undergoing a perfusion-decellularization protocol. 12 paired bones were used to assess the vascular matrix prior (N = 6) and after our protocol (N = 6) by immunohistochemistry. Collagen IV, Von Willebrand factor and CD31 were targeted then quantified. The medullary macroscopic vascular network was evaluated with 12 bones: 6 were decellularized and the other 6 were, as control, not treated. All 12 underwent a contrast-agent injection through the nutrient artery prior an angio CT-scan acquisition. The images were processed and the length of medullary vessels filled with contrast agent were measured on angiographic cT images obtained in control and decellularized bones by 4 independent observers to evaluate the vascular network preservation. The microscopic cortical vascular network was evaluated on 8 bones: 4 control and 4 decellularized. After injection of gelatinous fluorochrome mixture (calcein green), non-decalcified fluoroscopic microscopy was performed in order to assess the perfusion quality of cortical vascular lacunae. RESULTS The continuity of the microscopic vascular network was assessed with Collagen IV immunohistochemistry (p-value = 0.805) while the decellularization quality was observed through CD31 and Von Willebrand factor immunohistochemistry (p-values <0.001). The macroscopic vascular network was severely impaired after perfusion-decellularization; nutrient arteries were still patent but the amount of medullary vascular channels measured was significantly higher in the control group compared to the decellularized group (p-value <0.001). On average, the observers show good agreement on these results, except in the decellularized group where more inter-observer discrepancies were observed. The microscopic vascular network was observed with green fluoroscopic signal in almost every canals and lacunae of the bone cortices, in three different bone locations (proximal metaphysis, diaphysis and distal metaphysis). CONCLUSION Despite the aggressiveness of the decellularization protocol on medullary vessels, total porcine long bones decellularized by perfusion retain an acellular cortical microvascular network. By injection through the intact nutrient arteries, this latter vascular network can still be used as a total bone infusion access for bone tissue engineering in order to enhance massive bone allografts prior implantation.
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Affiliation(s)
- R Evrard
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium.
| | - J Manon
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - C Rafferty
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, UCLouvain, Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium
| | - L Fieve
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, UCLouvain, Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium
| | - O Cornu
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - T Kirchgesner
- Département d'Imagerie Médicale, Institut de Recherche Expérimentale et Clinique (Pôle IMAG), Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - F E Lecouvet
- Département d'Imagerie Médicale, Institut de Recherche Expérimentale et Clinique (Pôle IMAG), Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - T Schubert
- Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain (UCLouvain), Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium; Unité de Thérapie Tissulaire et Cellulaire de l'Appareil Locomoteur, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - B Lengele
- Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, UCLouvain, Avenue E. Mounier, 52-B1.52.04, 1200 Bruxelles, Belgium; Service de Chirurgie Plastique, Reconstructrice et Esthétique, Cliniques Universitaires Saint-Luc, UCLouvain, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
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Evrard R, Manon J, Maistriaux L, Rafferty C, Fieve L, Heller U, Cornu O, Gianello P, Schubert T, Lengele B. Decellularization of Massive Bone Allografts By Perfusion: A New Protocol for Tissue Engineering. Tissue Eng Part A 2024; 30:31-44. [PMID: 37698880 DOI: 10.1089/ten.tea.2023.0182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023] Open
Abstract
In terms of large bone defect reconstructions, massive bone allografts may sometimes be the only solution. However, they are still burdened with a high postoperative complication rate. Our hypothesis is that the immunogenicity of residual cells in the graft is involved in this issue. Decellularization by perfusion might therefore be the answer to process and create more biologically effective massive bone allografts. Seventy-two porcine bones were used to characterize the efficiency of our sodium hydroxide-based decellularization protocol. A sequence of solvent perfusion through each nutrient artery was set up to ensure the complete decellularization of whole long bones. Qualitative (histology and immunohistochemistry [IHC]) and quantitative (fluoroscopic absorbance and enzyme-linked immunosorbent assay) evaluations were performed to assess the decellularization and the preservation of the extracellular matrix in the bone grafts. Cytotoxicity and compatibility were also tested. Comparatively to nontreated bones, our experiments showed a very high decellularization quality, demonstrating that perfusion is mandatory to achieve an entire decellularization. Moreover, results showed a good preservation of the bone composition and microarchitecture, Haversian systems and vascular network included. This protocol reduces the human leukocyte antigen antigenic load of the graft by >50%. The majority of measured growth factors is still present in the same amount in the decellularized bones compared to the nontreated bones. Histology and IHC show that the bones were cell compatible, noncytotoxic, and capable of inducing osteoblastic differentiation of mesenchymal stem cells. Our decellularization/perfusion protocol allowed to create decellularized long bone graft models, thanks to their inner vascular network, ready for in vivo implantation or to be further used as seeding matrices.
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Affiliation(s)
- Robin Evrard
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - Julie Manon
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
| | - Louis Maistriaux
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Bruxelles, Belgique
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
| | - Chiara Rafferty
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
| | - Lies Fieve
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
| | - Ugo Heller
- Centre Hospitalo-Universitaire Necker Enfants Malades, Service de Chirurgie Maxillo-Faciale et Reconstructrice, Paris, France
| | - Olivier Cornu
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - Pierre Gianello
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Chirurgie Expérimentale et Transplantation, Université Catholique de Louvain, Bruxelles, Belgique
| | - Thomas Schubert
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo-Skeletal Lab, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Orthopédique et Traumatologique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - Benoit Lengele
- Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Pôle Morphologie, Université Catholique de Louvain, Bruxelles, Belgique
- Service de Chirurgie Plastique, Reconstructrice et Esthétique, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
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