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Sevcik J, Massaro MS, Palek R, Moulisova V, Liska V. Anatomical biliary reconstruction as an ultimum refugium for selective cases-History and current state of knowledge. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2024. [PMID: 39187445 DOI: 10.1002/jhbp.12067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Reconstruction of extrahepatic bile ducts is a staple procedure of HPB surgery. The current standard for most cases is a nonanatomical bilioenteric reconstruction, a satisfactory option for the majority of patients. However, it cannot be used for a small number of selective cases (short bowel syndrome, severe abdominal adhesions), where an anatomical reconstruction with or without an interponate can be used. This review summarizes current knowledge about tissue and material usage for experimental and clinical anatomical bile duct reconstruction in the last 100 years. A Pubmed database was searched for published articles about anatomical extrahepatic bile duct reconstruction in experimental and clinical settings ranging from 1920 to 2022. To date, the truly optimal interponate material has not yet been found. However, evidence reveals important properties of such material, most importantly its biodegradability and neovascularization in the recipient's body. The role of internal bile duct stenting for anatomical reconstruction seems important for the outcome. Anatomical reconstruction of extrahepatic bile ducts is an uncommon but usable technique in unique cases when a nonanatomical reconstruction cannot be done. The optimal properties of interponate material for anatomical bile duct reconstruction have been more clarified, although further research is required.
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Affiliation(s)
- Jan Sevcik
- Laboratory of Cancer Treatment and Tissue Regeneration, Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
- Department of Surgery, University Hospital in Pilsen, Pilsen, Czech Republic
| | - Maria Stefania Massaro
- Laboratory of Cancer Treatment and Tissue Regeneration, Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Richard Palek
- Laboratory of Cancer Treatment and Tissue Regeneration, Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
- Department of Surgery, University Hospital in Pilsen, Pilsen, Czech Republic
| | - Vladimira Moulisova
- Laboratory of Cancer Treatment and Tissue Regeneration, Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
| | - Vaclav Liska
- Laboratory of Cancer Treatment and Tissue Regeneration, Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Pilsen, Czech Republic
- Department of Surgery, University Hospital in Pilsen, Pilsen, Czech Republic
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Slavin BV, Ehlen QT, Costello JP, Nayak VV, Bonfante EA, Benalcázar Jalkh EB, Runyan CM, Witek L, Coelho PG. 3D Printing Applications for Craniomaxillofacial Reconstruction: A Sweeping Review. ACS Biomater Sci Eng 2023; 9:6586-6609. [PMID: 37982644 PMCID: PMC11229092 DOI: 10.1021/acsbiomaterials.3c01171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
The field of craniomaxillofacial (CMF) surgery is rich in pathological diversity and broad in the ages that it treats. Moreover, the CMF skeleton is a complex confluence of sensory organs and hard and soft tissue with load-bearing demands that can change within millimeters. Computer-aided design (CAD) and additive manufacturing (AM) create extraordinary opportunities to repair the infinite array of craniomaxillofacial defects that exist because of the aforementioned circumstances. 3D printed scaffolds have the potential to serve as a comparable if not superior alternative to the "gold standard" autologous graft. In vitro and in vivo studies continue to investigate the optimal 3D printed scaffold design and composition to foster bone regeneration that is suited to the unique biological and mechanical environment of each CMF defect. Furthermore, 3D printed fixation devices serve as a patient-specific alternative to those that are available off-the-shelf with an opportunity to reduce operative time and optimize fit. Similar benefits have been found to apply to 3D printed anatomical models and surgical guides for preoperative or intraoperative use. Creation and implementation of these devices requires extensive preclinical and clinical research, novel manufacturing capabilities, and strict regulatory oversight. Researchers, manufacturers, CMF surgeons, and the United States Food and Drug Administration (FDA) are working in tandem to further the development of such technology within their respective domains, all with a mutual goal to deliver safe, effective, cost-efficient, and patient-specific CMF care. This manuscript reviews FDA regulatory status, 3D printing techniques, biomaterials, and sterilization procedures suitable for 3D printed devices of the craniomaxillofacial skeleton. It also seeks to discuss recent clinical applications, economic feasibility, and future directions of this novel technology. By reviewing the current state of 3D printing in CMF surgery, we hope to gain a better understanding of its impact and in turn identify opportunities to further the development of patient-specific surgical care.
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Affiliation(s)
- Blaire V Slavin
- University of Miami Miller School of Medicine, 1011 NW 15th St., Miami, Florida 33136, United States
| | - Quinn T Ehlen
- University of Miami Miller School of Medicine, 1011 NW 15th St., Miami, Florida 33136, United States
| | - Joseph P Costello
- University of Miami Miller School of Medicine, 1011 NW 15th St., Miami, Florida 33136, United States
| | - Vasudev Vivekanand Nayak
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, 1011 NW 15th St., Miami, Florida 33136, United States
| | - Estavam A Bonfante
- Department of Prosthodontics and Periodontology, University of Sao Paulo, Bauru School of Dentistry, Alameda Dr. Octávio Pinheiro Brisolla, Quadra 9 - Jardim Brasil, Bauru São Paulo 17012-901, Brazil
| | - Ernesto B Benalcázar Jalkh
- Department of Prosthodontics and Periodontology, University of Sao Paulo, Bauru School of Dentistry, Alameda Dr. Octávio Pinheiro Brisolla, Quadra 9 - Jardim Brasil, Bauru São Paulo 17012-901, Brazil
| | - Christopher M Runyan
- Department of Plastic and Reconstructive Surgery, Wake Forest School of Medicine, 475 Vine St, Winston-Salem, North Carolina 27101, United States
| | - Lukasz Witek
- Biomaterials Division, NYU Dentistry, 345 E. 24th St., New York, New York 10010, United States
- Hansjörg Wyss Department of Plastic Surgery, NYU Grossman School of Medicine, New York University, 222 E 41st St., New York, New York 10017, United States
- Department of Biomedical Engineering, NYU Tandon School of Engineering, 6 MetroTech Center, Brooklyn, New York 11201, United States
| | - Paulo G Coelho
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, 1011 NW 15th St., Miami, Florida 33136, United States
- DeWitt Daughtry Family Department of Surgery, Division of Plastic Surgery, University of Miami Miller School of Medicine, 1120 NW 14th St., Miami, Florida 33136, United States
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Snyder Y, Jana S. Strategies for Development of Synthetic Heart Valve Tissue Engineering Scaffolds. PROGRESS IN MATERIALS SCIENCE 2023; 139:101173. [PMID: 37981978 PMCID: PMC10655624 DOI: 10.1016/j.pmatsci.2023.101173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
The current clinical solutions, including mechanical and bioprosthetic valves for valvular heart diseases, are plagued by coagulation, calcification, nondurability, and the inability to grow with patients. The tissue engineering approach attempts to resolve these shortcomings by producing heart valve scaffolds that may deliver patients a life-long solution. Heart valve scaffolds serve as a three-dimensional support structure made of biocompatible materials that provide adequate porosity for cell infiltration, and nutrient and waste transport, sponsor cell adhesion, proliferation, and differentiation, and allow for extracellular matrix production that together contributes to the generation of functional neotissue. The foundation of successful heart valve tissue engineering is replicating native heart valve architecture, mechanics, and cellular attributes through appropriate biomaterials and scaffold designs. This article reviews biomaterials, the fabrication of heart valve scaffolds, and their in-vitro and in-vivo evaluations applied for heart valve tissue engineering.
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Affiliation(s)
- Yuriy Snyder
- Department of Bioengineering, University of Missouri, Columbia, MO 65211, USA
| | - Soumen Jana
- Department of Bioengineering, University of Missouri, Columbia, MO 65211, USA
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Mitchell SM, Pajovich HT, Broas SM, Hugo MM, Banerjee IA. Molecular dynamics simulations and in vitro studies of hybrid decellularized leaf-peptide-polypyrrole composites for potential tissue engineering applications. J Biomol Struct Dyn 2023; 41:1665-1680. [PMID: 34990308 DOI: 10.1080/07391102.2021.2023643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Tissue engineering (TE) aims to repair and regenerate damaged tissue by an assimilation of optimal combination of cells specific to the tissue with an appropriate biomaterial. In this work, a new biomaterial for potential cardiac TE applications was developed by utilizing a combination of in silico studies and in vitro experiments. Molecular dynamics (MD) simulations for the formation of the novel composite prepared from the decellularized leaf components cellulose and pectin along with the VEGF derived peptide (NYLTHRQ) and polypyrrole (PPy) was carried out to assess self-assembly, mechanical properties, and interactions with integrin and NPR-C receptors which are commonly found in cells of cardiac tissue. Results of molecular dynamics simulations indicated the successful formation of stable assemblies. MD simulations also revealed that the scaffold successfully interacted with integrin and NPR-C receptors. As a proof of concept, beet leaves were decellularized (DC) and cross-linked with NYLTHRQ and PPy using layer-by-layer assembly. Decellularization (DC) was confirmed by DNA and protein quantification. Incorporation of the NYLTHRQ peptide and polypyrrole was confirmed by FTIR spectroscopy and SEM imaging. The DC-NYLTHRQ-PPy scaffold was seeded with co-cultured cardiomyocytes and vascular smooth muscle cells. The scaffold promoted cell proliferation and adhesion. Actin and Troponin T immunofluorescence staining showed the presence of these critical cardiomyocyte markers. Thus, for the first time we have developed a decellularized leaf-peptide-PPy composite scaffold by a combination of in silico studies and laboratory analyses that may have potential applications in cardiac TE.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Sarah M Broas
- Department of Chemistry, Fordham University, Bronx, NY, USA
| | - Mindy M Hugo
- Department of Chemistry, Fordham University, Bronx, NY, USA
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Polymeric Scaffolds for Dental, Oral, and Craniofacial Regenerative Medicine. Molecules 2021; 26:molecules26227043. [PMID: 34834134 PMCID: PMC8621873 DOI: 10.3390/molecules26227043] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/04/2021] [Accepted: 11/06/2021] [Indexed: 01/10/2023] Open
Abstract
Dental, oral, and craniofacial (DOC) regenerative medicine aims to repair or regenerate DOC tissues including teeth, dental pulp, periodontal tissues, salivary gland, temporomandibular joint (TMJ), hard (bone, cartilage), and soft (muscle, nerve, skin) tissues of the craniofacial complex. Polymeric materials have a broad range of applications in biomedical engineering and regenerative medicine functioning as tissue engineering scaffolds, carriers for cell-based therapies, and biomedical devices for delivery of drugs and biologics. The focus of this review is to discuss the properties and clinical indications of polymeric scaffold materials and extracellular matrix technologies for DOC regenerative medicine. More specifically, this review outlines the key properties, advantages and drawbacks of natural polymers including alginate, cellulose, chitosan, silk, collagen, gelatin, fibrin, laminin, decellularized extracellular matrix, and hyaluronic acid, as well as synthetic polymers including polylactic acid (PLA), polyglycolic acid (PGA), polycaprolactone (PCL), poly (ethylene glycol) (PEG), and Zwitterionic polymers. This review highlights key clinical applications of polymeric scaffolding materials to repair and/or regenerate various DOC tissues. Particularly, polymeric materials used in clinical procedures are discussed including alveolar ridge preservation, vertical and horizontal ridge augmentation, maxillary sinus augmentation, TMJ reconstruction, periodontal regeneration, periodontal/peri-implant plastic surgery, regenerative endodontics. In addition, polymeric scaffolds application in whole tooth and salivary gland regeneration are discussed.
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Poly(ε-caprolactone)/Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Blend from Fused Deposition Modeling as Potential Cartilage Scaffolds. INT J POLYM SCI 2021. [DOI: 10.1155/2021/6689789] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The scaffolds of poly(ε-caprolactone)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PCL/PHBV) blends were fabricated from fused deposition modeling. From indirect cytotoxicity testing based on mouse fibroblasts, all scaffolds with various blend ratios were nontoxic to cells. The surface-treated scaffold with a blend ratio of 25/75 PCL/PHBV exhibited the highest proliferation of porcine chondrocytes and total glycosaminoglycans (GAGs) after 21 days of culture. The scaffolds with a blend ratio of 25/75 with local pores (LP) were prepared from FDM along with a salt leaching technique using NaCl as porogens. The effect of NaOH in surface treatment on the biological property of scaffolds was investigated. The scaffolds with LP and with 1 M NaOH surface treatment exhibited the highest proliferation of cells and total GAGs after 28 days of culture. The degradation behaviors of the scaffolds were studied. The nonsurface treated, surface treated without LP, and surface treated with LP scaffolds were degraded in phosphate buffer (pH 7.4) for 30 days at 37°C and 50°C for nonenzymatic condition and at 37°C for enzymatic condition. The surface treated with LP scaffold showed the highest amount of weight loss, followed by the surface treated without LP, and the nonsurface-treated scaffolds without LP, respectively. The results from Fourier-transform infrared spectroscopy indicated degradation of PCL and PHBV through hydrolysis of the ester functional group. The compressive strengths of all scaffolds were sufficiently high. The results suggested that the scaffolds with the existence of LP and with surface treatment showed the highest potential for use as cartilage scaffolds.
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Daliri K, Pfannkuche K, Garipcan B. Effects of physicochemical properties of polyacrylamide (PAA) and (polydimethylsiloxane) PDMS on cardiac cell behavior. SOFT MATTER 2021; 17:1156-1172. [PMID: 33427281 DOI: 10.1039/d0sm01986k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In vitro cell culture is commonly applied in laboratories around the world. Cultured cells are either of primary origin or established cell lines. Such transformed cell lines are increasingly replaced by pluripotent stem cell derived organotypic cells with more physiological properties. The quality of the culture conditions and matrix environment is of considerable importance in this regard. In fact, mechanical cues of the extracellular matrix have substantial effects on the cellular physiology. This is especially true if contractile cells such as cardiomyocytes are cultured. Therefore, elastic biomaterials have been introduced as scaffolds in 2D and 3D culture models for different cell types, cardiac cells among them. In this review, key aspects of cell-matrix interaction are highlighted with focus on cardiomyocytes and chemical properties as well as strengths and potential pitfalls in using two commonly applied polymers for soft matrix engineering, polyacrylamide (PAA) and polydimethylsiloxane (PDMS) are discussed.
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Affiliation(s)
- Karim Daliri
- Institute for Neurophysiology, University of Cologne, Medical Faculty, Robert Koch Str. 39, 50931 Cologne, Germany.
| | - Kurt Pfannkuche
- Institute for Neurophysiology, University of Cologne, Medical Faculty, Robert Koch Str. 39, 50931 Cologne, Germany. and Department for Pediatric Cardiology, University Hospital Cologne, Cologne, Germany and Marga-and-Walter-Boll Laboratory for Cardiac Tissue Engineering, University of Cologne, Germany and Center for Molecular Medicine, University of Cologne, Germany
| | - Bora Garipcan
- Institute of Biomedical Engineering, Bogazici University, Cengelkoy, 34684, Istanbul, Turkey.
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8
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Ogay V, Mun EA, Kudaibergen G, Baidarbekov M, Kassymbek K, Zharkinbekov Z, Saparov A. Progress and Prospects of Polymer-Based Drug Delivery Systems for Bone Tissue Regeneration. Polymers (Basel) 2020; 12:E2881. [PMID: 33271770 PMCID: PMC7760650 DOI: 10.3390/polym12122881] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 12/12/2022] Open
Abstract
Despite the high regenerative capacity of bone tissue, there are some cases where bone repair is insufficient for a complete functional and structural recovery after damage. Current surgical techniques utilize natural and synthetic bone grafts for bone healing, as well as collagen sponges loaded with drugs. However, there are certain disadvantages associated with these techniques in clinical usage. To improve the therapeutic efficacy of bone tissue regeneration, a number of drug delivery systems based on biodegradable natural and synthetic polymers were developed and examined in in vitro and in vivo studies. Recent studies have demonstrated that biodegradable polymers play a key role in the development of innovative drug delivery systems and tissue engineered constructs, which improve the treatment and regeneration of damaged bone tissue. In this review, we discuss the most recent advances in the field of polymer-based drug delivery systems for the promotion of bone tissue regeneration and the physical-chemical modifications of polymers for controlled and sustained release of one or more drugs. In addition, special attention is given to recent developments on polymer nano- and microparticle-based drug delivery systems for bone regeneration.
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Affiliation(s)
- Vyacheslav Ogay
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan; (V.O.); (G.K.)
| | - Ellina A. Mun
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
| | - Gulshakhar Kudaibergen
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan; (V.O.); (G.K.)
| | - Murat Baidarbekov
- Research Institute of Traumatology and Orthopedics, Nur-Sultan 010000, Kazakhstan;
| | - Kuat Kassymbek
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.K.); (Z.Z.)
| | - Zharylkasyn Zharkinbekov
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.K.); (Z.Z.)
| | - Arman Saparov
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.K.); (Z.Z.)
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Xie Y, Hu C, Feng Y, Li D, Ai T, Huang Y, Chen X, Huang L, Tan J. Osteoimmunomodulatory effects of biomaterial modification strategies on macrophage polarization and bone regeneration. Regen Biomater 2020; 7:233-245. [PMID: 32523726 PMCID: PMC7266668 DOI: 10.1093/rb/rbaa006] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/02/2020] [Accepted: 02/21/2020] [Indexed: 12/12/2022] Open
Abstract
Biomaterials as bone substitutes are always considered as foreign bodies that can trigger host immune responses. Traditional designing principles have been always aimed at minimizing the immune reactions by fabricating inert biomaterials. However, clinical evidence revealed that those methods still have limitations and many of which were only feasible in the laboratory. Currently, osteoimmunology, the very pioneering concept is drawing more and more attention-it does not simply regard the immune response as an obstacle during bone healing but emphasizes the intimate relationship of the immune and skeletal system, which includes diverse cells, cytokines, and signaling pathways. Properties of biomaterials like topography, wettability, surface charge, the release of cytokines, mediators, ions and other bioactive molecules can impose effects on immune responses to interfere with the skeletal system. Based on the bone formation mechanisms, the designing methods of the biomaterials change from immune evasive to immune reprogramming. Here, we discuss the osteoimmunomodulatory effects of the new modification strategies-adjusting properties of bone biomaterials to induce a favorable osteoimmune environment. Such strategies showed potential to benefit the development of bone materials and lay a solid foundation for the future clinical application.
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Affiliation(s)
- Yajuan Xie
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Cheng Hu
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Yi Feng
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Danfeng Li
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Tingting Ai
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Yulei Huang
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Xiaodan Chen
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Lijia Huang
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
| | - Jiali Tan
- Guangdong Provincial Key Laboratory of Stomatology, Department of Orthodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, P. R. China
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Generali M, Casanova EA, Kehl D, Wanner D, Hoerstrup SP, Cinelli P, Weber B. Autologous endothelialized small-caliber vascular grafts engineered from blood-derived induced pluripotent stem cells. Acta Biomater 2019; 97:333-343. [PMID: 31344511 DOI: 10.1016/j.actbio.2019.07.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 01/09/2023]
Abstract
An ideal cell source for human therapeutic and disease modeling applications should be easily accessible and possess unlimited differentiation and expansion potential. Human induced pluripotent stem cells (hiPSCs) derived from peripheral blood mononuclear cells (PBMCs) represent a promising source given their ease of harvest and their pluripotent nature. Previous studies have demonstrated the feasibility of using PBMC-derived hiPSCs for vascular tissue engineering. However, so far, no endothelialization of hiPSC-derived tissue engineered vascular grafts (TEVGs) based on fully biodegradable polymers without xenogenic matrix components has been shown. In this study, we have generated hiPSCs from PBMCs and differentiated them into αSMA- and calponin-positive smooth muscle cells (SMCs) as well as endothelial cells (ECs) positive for CD31, vWF and eNOS. Both cell types were co-seeded on PGA-P4HB starter matrices and cultured under static or dynamic conditions to induce tissue formation in vitro. The resulting small diameter vascular grafts showed abundant amounts of extracellular matrix, containing a thin luminal layer of vWF-positive cells and a subendothelial αSMA-positive layer approximating the architecture of native vessels. Our results demonstrate the successful generation of TEVGs based on SMCs and ECs differentiated from PBMC-derived hiPSC combined with a biodegradable polymer. These results pave the way for developing autologous PBMC-derived hiPSC-based vascular constructs for therapeutic applications or disease modeling. STATEMENT OF SIGNIFICANCE: We report for the first time the possibility to employ human peripheral blood mononuclear cell (PBMC)-derived iPSCs to generate biodegradable polymer-based tissue engineered vascular grafts (TEVG), which mimic the native layered architecture of blood vessels. hiPSCs from PBMCs were differentiated into smooth muscle cells as well as endothelial cells. These cells were co-seeded on a biodegradable PGA/P4HB scaffold and cultured in a bioreactor to induce tissue formation in vitro. The resulting small diameter TEVG showed abundant amounts of extracellular matrix, containing a αSMA-positive layer in the interstitium and a thin luminal layer of vWF-positive endothelial cells approximating the architecture of native vessels. Our findings improving the generation of autologous vascular replacements using blood as an easily accessible cell source.
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Affiliation(s)
- Melanie Generali
- Institute for Regenerative Medicine (IREM), Center for Therapy Development and Good Manufacturing Practice, University of Zurich, Zurich, Switzerland.
| | - Elisa A Casanova
- Division of Trauma Surgery, Center for Clinical Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
| | - Debora Kehl
- Institute for Regenerative Medicine (IREM), Center for Therapy Development and Good Manufacturing Practice, University of Zurich, Zurich, Switzerland.
| | - Debora Wanner
- Institute for Regenerative Medicine (IREM), Center for Therapy Development and Good Manufacturing Practice, University of Zurich, Zurich, Switzerland.
| | - Simon P Hoerstrup
- Institute for Regenerative Medicine (IREM), Center for Therapy Development and Good Manufacturing Practice, University of Zurich, Zurich, Switzerland; Center for Applied Biotechnology and Molecular Medicine (CABMM), University of Zurich, Zurich, Switzerland; Wyss Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland.
| | - Paolo Cinelli
- Division of Trauma Surgery, Center for Clinical Research, University Hospital Zurich, University of Zurich, Zurich, Switzerland; Center for Applied Biotechnology and Molecular Medicine (CABMM), University of Zurich, Zurich, Switzerland.
| | - Benedikt Weber
- Institute for Regenerative Medicine (IREM), Center for Therapy Development and Good Manufacturing Practice, University of Zurich, Zurich, Switzerland; Center for Applied Biotechnology and Molecular Medicine (CABMM), University of Zurich, Zurich, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Zurich, Switzerland.
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Chan K, Tsoi JKH, Wu OK, Yon MJY, Wong RWK. Mechanical and biological evaluations of novel electrospun PLLA composite scaffolds doped with oxide ceramics. J Mech Behav Biomed Mater 2019; 97:229-237. [DOI: 10.1016/j.jmbbm.2019.05.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 01/21/2023]
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12
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Lee CC, Hirasawa N, Garcia KG, Ramanathan D, Kim KD. Stem and progenitor cell microenvironment for bone regeneration and repair. Regen Med 2019; 14:693-702. [PMID: 31393221 DOI: 10.2217/rme-2018-0044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Stem cells reside in their native microenvironment, which provides dynamic physical and chemical cues essential to their survival, proliferation and function. A typical cell-based therapeutic approach requires the mesenchymal stem cells (MSC) to depart their native microenvironment, transplant to in-vivo environment, differentiate toward multiple lineages and participate in bone formation. The long-term survival, function and fate of MSC are dependent on the microenvironment in which they are transplanted. Transplantation of morselized autologous bone, which contains both stem cells and their native microenvironment, results in a good clinical outcome. However, implantation of bone graft substitutes does not provide the complete and dynamic microenvironment for MSC. Current bone graft therapeutics may need to be improved further to provide an optimal engineered MSC microenvironment.
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Affiliation(s)
- Charles C Lee
- Department of Cell Biology & Human Anatomy, School of Medicine, University of California, Davis, CA, USA
| | | | | | - Dinesh Ramanathan
- Department of Neurological Surgery, School of Medicine, University of California, Davis, CA, USA
| | - Kee D Kim
- Department of Neurological Surgery, School of Medicine, University of California, Davis, CA, USA
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Keridou I, Del Valle LJ, Funk L, Turon P, Franco L, Puiggalí J. Non-Isothermal Crystallization Kinetics of Poly(4-Hydroxybutyrate) Biopolymer. Molecules 2019; 24:E2840. [PMID: 31387227 PMCID: PMC6696382 DOI: 10.3390/molecules24152840] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/21/2019] [Accepted: 08/02/2019] [Indexed: 12/20/2022] Open
Abstract
The non-isothermal crystallization of the biodegradable poly(4-hydroxybutyrate) (P4HB) has been studied by means of differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). In the first case, Avrami, Ozawa, Mo, Cazé, and Friedman methodologies were applied. The isoconversional approach developed by Vyazovkin allowed also the determination of a secondary nucleation parameter of 2.10 × 105 K2 and estimating a temperature close to 10 °C for the maximum crystal growth rate. Similar values (i.e., 2.22 × 105 K2 and 9 °C) were evaluated from non-isothermal Avrami parameters. All experimental data corresponded to a limited region where the polymer crystallized according to a single regime. Negative and ringed spherulites were always obtained from the non-isothermal crystallization of P4HB from the melt. The texture of spherulites was dependent on the crystallization temperature, and specifically, the interring spacing decreased with the decrease of the crystallization temperature (Tc). Synchrotron data indicated that the thickness of the constitutive lamellae varied with the cooling rate, being deduced as a lamellar insertion mechanism that became more relevant when the cooling rate increased. POM non-isothermal measurements were also consistent with a single crystallization regime and provided direct measurements of the crystallization growth rate (G). Analysis of the POM data gave a secondary nucleation constant and a bell-shaped G-Tc dependence that was in relative agreement with DSC analysis. All non-isothermal data were finally compared with information derived from previous isothermal analyses.
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Affiliation(s)
- Ina Keridou
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain
| | - Luis J Del Valle
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain
- Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C', c/Pasqual i Vila s/n, E-08028 Barcelona, Spain
| | - Lutz Funk
- B. Braun Surgical, S.A. Carretera de Terrassa 121, 08191 Rubí (Barcelona), Spain
| | - Pau Turon
- B. Braun Surgical, S.A. Carretera de Terrassa 121, 08191 Rubí (Barcelona), Spain
| | - Lourdes Franco
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C', c/Pasqual i Vila s/n, E-08028 Barcelona, Spain.
| | - Jordi Puiggalí
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya, Campus Sud, Edifici C', c/Pasqual i Vila s/n, E-08028 Barcelona, Spain.
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Siddiqui N, Asawa S, Birru B, Baadhe R, Rao S. PCL-Based Composite Scaffold Matrices for Tissue Engineering Applications. Mol Biotechnol 2019; 60:506-532. [PMID: 29761314 DOI: 10.1007/s12033-018-0084-5] [Citation(s) in RCA: 207] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Biomaterial-based scaffolds are important cues in tissue engineering (TE) applications. Recent advances in TE have led to the development of suitable scaffold architecture for various tissue defects. In this narrative review on polycaprolactone (PCL), we have discussed in detail about the synthesis of PCL, various properties and most recent advances of using PCL and PCL blended with either natural or synthetic polymers and ceramic materials for TE applications. Further, various forms of PCL scaffolds such as porous, films and fibrous have been discussed along with the stem cells and their sources employed in various tissue repair strategies. Overall, the present review affords an insight into the properties and applications of PCL in various tissue engineering applications.
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Affiliation(s)
- Nadeem Siddiqui
- Stem Cell Research Laboratory, Department of Biotechnology, NIT Warangal, Warangal, Telangana, 506004, India
| | - Simran Asawa
- Stem Cell Research Laboratory, Department of Biotechnology, NIT Warangal, Warangal, Telangana, 506004, India
| | - Bhaskar Birru
- Stem Cell Research Laboratory, Department of Biotechnology, NIT Warangal, Warangal, Telangana, 506004, India
| | - Ramaraju Baadhe
- Stem Cell Research Laboratory, Department of Biotechnology, NIT Warangal, Warangal, Telangana, 506004, India
| | - Sreenivasa Rao
- Stem Cell Research Laboratory, Department of Biotechnology, NIT Warangal, Warangal, Telangana, 506004, India.
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Bruder L, Spriestersbach H, Brakmann K, Stegner V, Sigler M, Berger F, Schmitt B. Transcatheter Decellularized Tissue-Engineered Heart Valve (dTEHV) Grown on Polyglycolic Acid (PGA) Scaffold Coated with P4HB Shows Improved Functionality over 52 Weeks due to Polyether-Ether-Ketone (PEEK) Insert. J Funct Biomater 2018; 9:jfb9040064. [PMID: 30428602 PMCID: PMC6306732 DOI: 10.3390/jfb9040064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/26/2018] [Accepted: 09/10/2018] [Indexed: 12/25/2022] Open
Abstract
Many congenital heart defects and degenerative valve diseases require replacement of heart valves in children and young adults. Transcatheter xenografts degenerate over time. Tissue engineering might help to overcome this limitation by providing valves with ability for self-repair. A transcatheter decellularized tissue-engineered heart valve (dTEHV) was developed using a polyglycolic acid (PGA) scaffold. A first prototype showed progressive regurgitation after 6 months in-vivo due to a suboptimal design and misguided remodeling process. A new geometry was developed accordingly with computational fluid dynamics (CFD) simulations and implemented by adding a polyether-ether-ketone (PEEK) insert to the bioreactor during cultivation. This lead to more belly-shaped leaflets with higher coaptation areas for this second generation dTEHV. Valve functionality assessed via angiography, intracardiac echocardiography, and MRI proved to be much better when compared the first generation dTEHV, with preserved functionality up to 52 weeks after implantation. Macroscopic findings showed no thrombi or signs of acute inflammation. For the second generation dTEHV, belly-shaped leaflets with soft and agile tissue-formation were seen after explantation. No excessive leaflet shortening occurred in the second generation dTEHV. Histological analysis showed complete engraftment of the dTEHV, with endothelialization of the leaflets and the graft wall. Leaflets consisted of collagenous tissue and some elastic fibers. Adaptive leaflet remodeling was visible in all implanted second generation dTEHV, and most importantly no fusion between leaflet and wall was found. Very few remnants of the PGA scaffold were detected even 52 weeks after implantation, with no influence on functionality. By adding a polyether-ether-ketone (PEEK) insert to the bioreactor construct, a new geometry of PGA-scaffold based dTEHV could be implemented. This resulted in very good valve function of the implanted dTEHV over a period of 52 weeks.
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Affiliation(s)
- Leon Bruder
- Deutsches Herzzentrum Berlin, Department of Congenital Heart Disease, 13353 Berlin, Germany.
| | - Hendrik Spriestersbach
- Deutsches Herzzentrum Berlin, Department of Congenital Heart Disease, 13353 Berlin, Germany.
| | - Kerstin Brakmann
- Deutsches Herzzentrum Berlin, Department of Congenital Heart Disease, 13353 Berlin, Germany.
| | - Valentin Stegner
- Deutsches Herzzentrum Berlin, Department of Congenital Heart Disease, 13353 Berlin, Germany.
| | - Matthias Sigler
- Universitätsmedizin Göttingen, Herzzentrum Göttingen, Department of Pediatric Cardiology, 37075 Göttingen, Germany.
| | - Felix Berger
- Deutsches Herzzentrum Berlin, Department of Congenital Heart Disease, 13353 Berlin, Germany.
| | - Boris Schmitt
- Deutsches Herzzentrum Berlin, Department of Congenital Heart Disease, 13353 Berlin, Germany.
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