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Ten Brink T, Damanik F, Rotmans JI, Moroni L. Unraveling and Harnessing the Immune Response at the Cell-Biomaterial Interface for Tissue Engineering Purposes. Adv Healthc Mater 2024; 13:e2301939. [PMID: 38217464 DOI: 10.1002/adhm.202301939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 12/14/2023] [Indexed: 01/15/2024]
Abstract
Biomaterials are defined as "engineered materials" and include a range of natural and synthetic products, designed for their introduction into and interaction with living tissues. Biomaterials are considered prominent tools in regenerative medicine that support the restoration of tissue defects and retain physiologic functionality. Although commonly used in the medical field, these constructs are inherently foreign toward the host and induce an immune response at the material-tissue interface, defined as the foreign body response (FBR). A strong connection between the foreign body response and tissue regeneration is suggested, in which an appropriate amount of immune response and macrophage polarization is necessary to trigger autologous tissue formation. Recent developments in this field have led to the characterization of immunomodulatory traits that optimizes bioactivity, the integration of biomaterials and determines the fate of tissue regeneration. This review addresses a variety of aspects that are involved in steering the inflammatory response, including immune cell interactions, physical characteristics, biochemical cues, and metabolomics. Harnessing the advancing knowledge of the FBR allows for the optimization of biomaterial-based implants, aiming to prevent damage of the implant, improve natural regeneration, and provide the tools for an efficient and successful in vivo implantation.
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Affiliation(s)
- Tim Ten Brink
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht, 6229ER, The Netherlands
| | - Febriyani Damanik
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht, 6229ER, The Netherlands
| | - Joris I Rotmans
- Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, Leiden, 2333ZA, The Netherlands
| | - Lorenzo Moroni
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht, 6229ER, The Netherlands
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2
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Fuchs S, Caserto JS, Liu Q, Wang K, Shariati K, Hartquist CM, Zhao X, Ma M. A Glucose-Responsive Cannula for Automated and Electronics-Free Insulin Delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2403594. [PMID: 38639424 PMCID: PMC11223976 DOI: 10.1002/adma.202403594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/12/2024] [Indexed: 04/20/2024]
Abstract
Automated delivery of insulin based on continuous glucose monitoring is revolutionizing the way insulin-dependent diabetes is treated. However, challenges remain for the widespread adoption of these systems, including the requirement of a separate glucose sensor, sophisticated electronics and algorithms, and the need for significant user input to operate these costly therapies. Herein, a user-centric glucose-responsive cannula is reported for electronics-free insulin delivery. The cannula-made from a tough, elastomer-hydrogel hybrid membrane formed through a one-pot solvent exchange method-changes permeability to release insulin rapidly upon physiologically relevant varying glucose levels, providing simple and automated insulin delivery with no additional hardware or software. Two prototypes of the cannula are evaluated in insulin-deficient diabetic mice. The first cannula-an ends-sealed, subcutaneously inserted prototype-normalizes blood glucose levels for 3 d and controls postprandial glucose levels. The second, more translational version-a cannula with the distal end sealed and the proximal end connected to a transcutaneous injection port-likewise demonstrates tight, 3-d regulation of blood glucose levels when refilled twice daily. This proof-of-concept study may aid in the development of "smart" cannulas and next-generation insulin therapies at a reduced burden-of-care toll and cost to end-users.
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Affiliation(s)
- Stephanie Fuchs
- Biological and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Julia S. Caserto
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca NY, 14853, USA
| | - Qingsheng Liu
- Biological and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Kecheng Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Kaavian Shariati
- Biological and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Chase M. Hartquist
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Minglin Ma
- Biological and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
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3
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Zheng X, Ni Z, Pei Q, Wang M, Tan J, Bai S, Shi F, Ye S. Probing the Molecular Structure and Dynamics of Membrane-Bound Proteins during Misfolding Processes by Sum-Frequency Generation Vibrational Spectroscopy. Chempluschem 2024; 89:e202300684. [PMID: 38380553 DOI: 10.1002/cplu.202300684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 02/22/2024]
Abstract
Protein misfolding and amyloid formation are implicated in the protein dysfunction, but the underlying mechanism remains to be clarified due to the lack of effective tools for detecting the transient intermediates. Sum frequency generation vibrational spectroscopy (SFG-VS) has emerged as a powerful tool for identifying the structure and dynamics of proteins at the interfaces. In this review, we summarize recent SFG-VS studies on the structure and dynamics of membrane-bound proteins during misfolding processes. This paper first introduces the methods for determining the secondary structure of interfacial proteins: combining chiral and achiral spectra of amide A and amide I bands and combining amide I, amide II, and amide III spectral features. To demonstrate the ability of SFG-VS in investigating the interfacial protein misfolding and amyloid formation, studies on the interactions between different peptides/proteins (islet amyloid polypeptide, amyloid β, prion protein, fused in sarcoma protein, hen egg-white lysozyme, fusing fusion peptide, class I hydrophobin SC3 and class II hydrophobin HFBI) and surfaces such as lipid membranes are discussed. These molecular-level studies revealed that SFG-VS can provide a unique understanding of the mechanism of interfacial protein misfolding and amyloid formation in real time, in situ and without any exogenous labeling.
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Affiliation(s)
- Xiaoxuan Zheng
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Zijian Ni
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Quanbing Pei
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Mengmeng Wang
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Junjun Tan
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Shiyu Bai
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Fangwen Shi
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Shuji Ye
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
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4
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Roosa CA, Lempke SL, Hannan RT, Nicklow E, Sturek JM, Ewald SE, Griffin DR. Conjugation of IL-33 to Microporous Annealed Particle Scaffolds Enhances Type 2-Like Immune Responses In Vitro and In Vivo. Adv Healthc Mater 2024:e2400249. [PMID: 38648258 DOI: 10.1002/adhm.202400249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/11/2024] [Indexed: 04/25/2024]
Abstract
The inflammatory foreign body response (FBR) is the main driver of biomaterial implant failure. Current strategies to mitigate the onset of a FBR include modification of the implant surface, release of anti-inflammatory drugs, and cell-scale implant porosity. The microporous annealed particle (MAP) scaffold platform is an injectable, porous biomaterial composed of individual microgels, which are annealed in situ to provide a structurally stable scaffold with cell-scale microporosity. MAP scaffold does not induce a discernible foreign body response in vivo and, therefore, can be used a "blank canvas" for biomaterial-mediated immunomodulation. Damage associated molecular patterns (DAMPs), such as IL-33, are potent regulators of type 2 immunity that play an important role in tissue repair. In this manuscript, IL-33 is conjugated to the microgel building-blocks of MAP scaffold to generate a bioactive material (IL33-MAP) capable of stimulating macrophages in vitro via a ST-2 receptor dependent pathway and modulating immune cell recruitment to the implant site in vivo, which indicates an upregulation of a type 2-like immune response and downregulation of a type 1-like immune response.
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Affiliation(s)
- Colleen A Roosa
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Charlottesville, VA, 22903, USA
| | - Samantha L Lempke
- Department of Microbiology, Immunology, and Cancer Biology, Beirne B. Carter Immunology Center, University of Virginia, 200 Jeanette Lancaster Way, Charlottesville, VA, 22903, USA
| | - Riley T Hannan
- Department of Medicine, Pulmonary and Critical Care, University of Virginia, 1221 Lee St, Charlottesville, VA, 22903, USA
| | - Ethan Nicklow
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Charlottesville, VA, 22903, USA
| | - Jeffrey M Sturek
- Department of Medicine, Pulmonary and Critical Care, University of Virginia, 1221 Lee St, Charlottesville, VA, 22903, USA
| | - Sarah E Ewald
- Department of Microbiology, Immunology, and Cancer Biology, Beirne B. Carter Immunology Center, University of Virginia, 200 Jeanette Lancaster Way, Charlottesville, VA, 22903, USA
| | - Donald R Griffin
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Charlottesville, VA, 22903, USA
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Tang D, Han B, He C, Xu Y, Liu Z, Wang W, Huang Z, Xiao Z, He F. Electrospun Poly-l-Lactic Acid Membranes Promote M2 Macrophage Polarization by Regulating the PCK2/AMPK/mTOR Signaling Pathway. Adv Healthc Mater 2024:e2400481. [PMID: 38650356 DOI: 10.1002/adhm.202400481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Indexed: 04/25/2024]
Abstract
Electrospun membranes are widely used in tissue engineering. Regretfully, there is limited research on how its morphological characteristics precisely regulate macrophage activation and immune response. Therefore, electrospun poly-l-lactic acid (PLLA) membranes with different alignments (align and random) and diameters (nanoscale and microscale) are prepared to investigate the effects of different surface morphologies on M2 macrophage polarization. Additionally, transcriptome, proteome, and phosphoproteome sequencings are combined to examine the underlying regulatory mechanisms. The results show that the electrospun PLLA membranes with different surface morphologies have good biocompatibility and can regulate the phenotype and function of macrophages by changing the micromorphology of the matrix surface. Especially, macrophages cultured on the electrospun membranes of the A600 group exhibit higher M2 macrophage polarization than the other three groups. Furthermore, the findings demonstrate that electrospun PLLA membranes enhance AMP-activated protein kinase (AMPK)/ mammalian target of rapamycin (mTOR) signaling activation by upregulating the expression of integrin phosphoenolpyruvate carboxykinase 2 (PCK2), which is critical for M2 macrophage polarization. Taken together, electrospun PLLA membranes promote M2 macrophage polarization by regulating the PCK2/AMPK/mTOR signaling pathway. This research can provide further theoretical bases for scaffold design, immunoregulatory mechanisms, and clinical application based on electrospinning technology in the future.
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Affiliation(s)
- Daiyuan Tang
- Department of Orthopedics, Kunming Medical University Affiliated Qujing Hospital, Qujing, 655000, China
| | - Bing Han
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530022, China
| | - Chengkai He
- Basic Medical College, Kunming Medical University, Kunming, 650500, China
| | - Yunrong Xu
- Department of Orthopedics, Kunming Medical University Affiliated Qujing Hospital, Qujing, 655000, China
| | - Zhui Liu
- Basic Medical College, Kunming Medical University, Kunming, 650500, China
| | - Weizhou Wang
- Department of Orthopedics, The First Affiliated Hospital of Kunming Medical University, Kunming, 655000, China
| | - Zaitian Huang
- Department of Orthopedics, Kunming Medical University Affiliated Qujing Hospital, Qujing, 655000, China
| | - Zhenping Xiao
- Department of Orthopedics, Kunming Medical University Affiliated Qujing Hospital, Qujing, 655000, China
| | - Fei He
- Department of Orthopedics, Kunming Medical University Affiliated Qujing Hospital, Qujing, 655000, China
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Huang W, Cai X, Xiao C, Song W, Yin H, Xu W. Surface micropatterning of 3D printed PCL scaffolds promotes osteogenic differentiation of BMSCs and regulates macrophage M2 polarization. Heliyon 2024; 10:e26621. [PMID: 38434344 PMCID: PMC10907665 DOI: 10.1016/j.heliyon.2024.e26621] [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: 02/04/2024] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 03/05/2024] Open
Abstract
Micropatterned structures on the surface of materials possessing biomimetic properties to mimic the extracellular matrix and induce cellular behaviors have been widely studied. However, it is still a major challenge to obtain internally stable and controllable micropatterned 3D scaffolds for bone repair and regeneration. In this study, 3D scaffolds with regular grating arrays using polycaprolactone (PCL) as a matrix material were prepared by combining 3D printing and soft lithography, and the effects of grating micropatterning on osteogenic differentiation of BMSCs and M1/M2 polarization of macrophages were investigated. The results showed that compared with the planar group and the 30um grating spacing group, PCL with a grating spacing of 20um significantly promoted the osteogenic differentiation of BMSCs, induced the polarization of RAW264.7 cells toward M2 type, and suppressed the expression of M1-type pro-inflammatory genes and markers. In conclusion, we successfully constructed PCL-based three-dimensional scaffolds with stable and controllable micrographs (grating arrays) inside, which possess excellent osteogenic properties and promote the formation of an immune microenvironment conducive to osteogenesis. This study is a step forward to the exploration of bone-filling materials affecting cell behavior, and makes a new contribution to the provision of high-quality materials.
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Affiliation(s)
- Weihua Huang
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- Department of Orthopaedic Surgery, Affiliated Qingyuan Hospital, Guangzhou Medical University, Qingyuan People's Hospital, No.35, Yinquan North Road, Qingcheng District, Qingyuan, Guangdong, 511518, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Guangzhou Medical University, The Second Clinical Medicine School of Guangzhou Medical University, No. 250, Changgang East Road, Haizhu District, Guangzhou, Guangdong, 510260, China
| | - Xiayu Cai
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
| | - Chujie Xiao
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- National Engineering Research Center for Human Tissue Restoration and Function Reconstruction, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510275, China
| | - Wenlu Song
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- Sun Yat-Sen University, Xingang West Road 135, Guangzhou, Guangdong, 510006, China
| | - Huinan Yin
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Guangzhou Medical University, The Second Clinical Medicine School of Guangzhou Medical University, No. 250, Changgang East Road, Haizhu District, Guangzhou, Guangdong, 510260, China
| | - Weikang Xu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- Guangdong Chinese Medicine Intelligent Diagnosis and Treatment Engineering Technology Research center, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong 510316, China
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7
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Moura D, Rohringer S, Ferreira HP, Pereira AT, Barrias CC, Magalhães FD, Bergmeister H, Gonçalves IC. Long-term in vivo degradation and biocompatibility of degradable pHEMA hydrogels containing graphene oxide. Acta Biomater 2024; 173:351-364. [PMID: 37984630 DOI: 10.1016/j.actbio.2023.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/31/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023]
Abstract
Developing biocompatible, non-fouling and biodegradable hydrogels for blood-contacting devices remains a demanding challenge. Such materials should promote natural healing, prevent clotting, and undergo controlled degradation. This study evaluates the biocompatibility and biodegradation of degradable poly(2-hydroxyethyl methacrylate) (d-pHEMA) hydrogels with or without reinforcement with oxidized few-layer graphene (d-pHEMA/M5ox) in a long term implantation in rats, assessing non-desired side-effects (irritation, chronic toxicity, immune response). Subcutaneous implantation over 6 months revealed degradation of both hydrogels, despite slower for d-pHEMA/M5ox, with degradation products found in intracellular vesicles. No inflammation nor infection at implantation areas were observed, and no histopathological findings were detected in parenchymal organs. Immunohistochemistry confirmed d-pHEMA and d-pHEMA/M5ox highly anti-adhesiveness. Gene expression of macrophages markers revealed presence of both M1 and M2 macrophages at all timepoints. M1/M2 profile after 6 months reveals an anti-inflammatory environment, suggesting no chronic inflammation, as also demonstrated by cytokines (IL-α, TNF-α and IL-10) analysis. Overall, modification of pHEMA towards a degradable material was successfully achieved without evoking a loss of its inherent properties, specially its anti-adhesiveness and biocompatibility. Therefore, these hydrogels hold potential as blank-slate for further modifications that promote cellular adhesion/proliferation for tissue engineering applications, namely for designing blood contacting devices with different load bearing requirements. STATEMENT OF SIGNIFICANCE: Biocompatibility, tunable biodegradation kinetics, and suitable immune response with lack of chronic toxicity and irritation, are key features in degradable blood contact devices that demand long-term exposure. We herein evaluate the 6-month in vivo performance of a degradable and hemocompatible anti-adhesive hydrogel based in pHEMA, and its mechanically reinforced formulation with few-layer graphene oxide. This subcutaneous implantation in a rat model, shows gradual degradation with progressive changes in material morphology, and no evidence of local inflammation in surrounding tissue, neither signs of inflammation or adverse reactions in systemic organs, suggesting biocompatibility of degradation products. Such hydrogels exhibit great potential as a blank slate for tissue engineering applications, including for blood contact, where cues for specific cells can be incorporated.
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Affiliation(s)
- Duarte Moura
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; FEUP - Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e de Materiais, Universidade do Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal
| | - Sabrina Rohringer
- Center for Biomedical Research and Translational Surgery, Medical University of Vienna, Vienna, Austria
| | - Helena P Ferreira
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto 4050-313, Portugal
| | - Andreia T Pereira
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal
| | - Cristina C Barrias
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto 4050-313, Portugal
| | - Fernão D Magalhães
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal
| | - Helga Bergmeister
- Center for Biomedical Research and Translational Surgery, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Cardiovascular Research, Austria
| | - Inês C Gonçalves
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, Porto 4200-180, Portugal.
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8
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Kim J, Kim S, Song I. Octacalcium phosphate, a promising bone substitute material: a narrative review. JOURNAL OF YEUNGNAM MEDICAL SCIENCE 2024; 41:4-12. [PMID: 37157781 PMCID: PMC10834270 DOI: 10.12701/jyms.2023.00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/13/2023] [Indexed: 05/10/2023]
Abstract
Biomaterials have been used to supplement and restore function and structure by replacing or restoring parts of damaged tissues and organs. In ancient times, the medical use of biomaterials was limited owing to infection during surgery and poor surgical techniques. However, in modern times, the medical applications of biomaterials are diversifying owing to great developments in material science and medical technology. In this paper, we introduce biomaterials, focusing on calcium phosphate ceramics, including octacalcium phosphate, which has recently attracted attention as a bone graft material.
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Affiliation(s)
| | | | - Inhwan Song
- Department of Anatomy, Yeungnam University College of Medicine, Daegu, Korea
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9
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Liang NE, Griffin MF, Berry CE, Parker JB, Downer MA, Wan DC, Longaker MT. Attenuating Chronic Fibrosis: Decreasing Foreign Body Response with Acellular Dermal Matrix. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:671-680. [PMID: 37212342 DOI: 10.1089/ten.teb.2023.0060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Surgical implants are increasingly used across multiple medical disciplines, with applications ranging from tissue reconstruction to improving compromised organ and limb function. Despite their significant potential for improving health and quality of life, biomaterial implant function is severely limited by the body's immune response to its presence: this is known as the foreign body response (FBR) and is characterized by chronic inflammation and fibrotic capsule formation. This response can result in life-threatening sequelae such as implant malfunction, superimposed infection, and associated vessel thrombosis, in addition to soft tissue disfigurement. Patients may require frequent medical visits, as well as repeated invasive procedures, increasing the burden on an already strained health care system. Currently, the FBR and the cells and molecular mechanisms that mediate it are poorly understood. With applications across a wide array of surgical specialties, acellular dermal matrix (ADM) has emerged as a potential solution to the fibrotic reaction seen with FBR. Although the mechanisms by which ADM decreases chronic fibrosis remain to be clearly characterized, animal studies across diverse surgical models point to its biomimetic properties that facilitate decreased periprosthetic inflammation and improved host cell incorporation. Impact Statement Foreign body response (FBR) is a significant limitation to the use of implantable biomaterials. Acellular dermal matrix (ADM) has been observed to decrease the fibrotic reaction seen with FBR, although its mechanistic details are poorly understood. This review is dedicated to summarizing the primary literature on the biology of FBR in the context of ADM use, using surgical models in breast reconstruction, abdominal and chest wall repair, and pelvic reconstruction. This article will provide readers with an overarching review of shared mechanisms for ADM across multiple surgical models and diverse anatomical applications.
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Affiliation(s)
- Norah E Liang
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michelle F Griffin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Charlotte E Berry
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Jennifer B Parker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Mauricio A Downer
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Derrick C Wan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michael T Longaker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
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10
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Weigel T, Christ B, Dembski S, Ewald A, Groneberg D, Hansmann J, Luxenhofer R, Metzger M, Walles H, Willy C, Groeber-Becker F, Probst J. Biomimetic Connection of Transcutaneous Implants with Skin. Adv Healthc Mater 2023; 12:e2301131. [PMID: 37660290 DOI: 10.1002/adhm.202301131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 08/23/2023] [Indexed: 09/04/2023]
Abstract
Bacterial infection is a crucial complication in implant restoration, in particular in permanent skin-penetrating implants. Therein, the resulting gap between transcutaneous implant and skin represents a permanent infection risk, limiting the field of application and the duration of application. To overcome this limitation, a tight physiological connection is required to achieve a biological and mechanical welding for a long-term stable closure including self-healing probabilities. This study describes a new approach, wherein the implant is connected covalently to a highly porous electrospun fleece featuring physiological dermal integration potential. The integrative potential of the scaffold is shown in vitro and confirmed in vivo, further demonstrating tissue integration by neovascularization, extracellular matrix formation, and prevention of encapsulation. To achieve a covalent connection between fleece and implant surface, self-initiated photografting and photopolymerization of hydroxyethylmethacrylate is combined with a new crosslinker (methacrylic acid coordinated titanium-oxo clusters) on proton-abstractable implant surfaces. For implant modification, the attached fleece is directed perpendicular from the implant surface into the surrounding dermal tissue. First in vitro skin implantations demonstrate the implants' dermal integration capability as well as wound closure potential on top of the fleece by epithelialization, establishing a bacteria-proof and self-healing connection of skin and transcutaneous implant.
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Affiliation(s)
- Tobias Weigel
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
| | - Bastian Christ
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
| | - Sofia Dembski
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
- University Hospital Würzburg, Department for Tissue Engineering and Regenerative Medicine, 97070, Würzburg, Germany
| | - Andrea Ewald
- University Hospital Würzburg, Department of Functional Materials in Medicine and Dentistry, Pleicherwall 2, 97070, Würzburg, Germany
| | - Dieter Groneberg
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
| | - Jan Hansmann
- Faculty of Electrical Engineering, University of Applied Sciences Würzburg-Schweinfurt, 97421, Schweinfurt, Germany
| | - Robert Luxenhofer
- Soft Matter Chemistry, Department of Chemistry and Helsinki Institute of Sustainability Science, Faculty of Science, University of Helsinki, P.O. Box 55, Helsinki, 00014, Finland
| | - Marco Metzger
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
- University Hospital Würzburg, Department for Tissue Engineering and Regenerative Medicine, 97070, Würzburg, Germany
| | - Heike Walles
- Core Facility Tissue Engineering, Otto-von-Guericke-University Magdeburg, 39106, Magdeburg, Germany
| | - Christian Willy
- Trauma & Orthopedic Surgery, Septic & Reconstructive Surgery, Research and Treatment Center Septic Defect Wounds, Federal Armed Forces of Germany, Bundeswehr (Military) Academic Hospital Berlin, Scharnhorststr. 13, 10115, Berlin, Germany
| | - Florian Groeber-Becker
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
- University Hospital Würzburg, Department for Tissue Engineering and Regenerative Medicine, 97070, Würzburg, Germany
| | - Jörn Probst
- Translational Center for Regenerative Therapies (TLC-RT), Fraunhofer Institute for Silicate Research (ISC), 97082, Würzburg, Germany
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11
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Xiao Y, Zhang J, Tian Y, Zhang M, Du Y, Meng L, Liu Y, Zhang Z, Qiu L, Chen Y, Dong Q, Chen L, Gao J, Zheng J, Li Z, Li Q, Dai J, Huang X. Vaginal reconstruction with a double-sided biomembrane-a preclinical experimental study on large animals. Biomater Sci 2023; 11:7077-7089. [PMID: 37655798 DOI: 10.1039/d3bm00155e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Tissue engineering techniques bring the promise of vaginal reconstruction with low invasiveness and fewer complications. However, existing biomaterial scaffolds remain limited in efficient vaginal recovery, focusing only on regenerating an epithelial layer, but muscle layers are missing or abnormal. The lack of a multi-tissue hierarchical structure in the reconstructed vagina leads to shrinking, stenosis, and fibrosis. Here, an acellular matrix named a double-sided biomembrane (DBM) is demonstrated for vaginal recovery. The regeneration of epithelial and muscle layers is achieved simultaneously since the smooth side of the DBM is helpful for guiding epithelial cell growth, while its loose and porous side guides muscle cell growth. In addition, the DBM demonstrates excellent mechanical properties similar to vaginal tissue, and hydrophilicity. Therefore, neovaginas were observed in the fourth and twelfth weeks after DBMs were transplanted to repair full-thickness vaginal defects (4 cm) that we established in large animals. The DBMs can effectively promote rapid epithelialization, the formation of large muscle bundles, higher rates of angiogenesis, and the restoration of physiological function in a neovagina. That is, the injured vagina achieves nearly complete recovery in anatomy and function, similar to a normal vagina. These preclinical results indicate that the DBM has prospects for vaginal injury repair.
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Affiliation(s)
- Yanlai Xiao
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
- Department of Obstetrics and Gynecology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jingkun Zhang
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Yanpeng Tian
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Mingle Zhang
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Yanfang Du
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Li Meng
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Yibin Liu
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Zhiqiang Zhang
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Linzi Qiu
- Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China
| | - Yanyan Chen
- Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China
| | - Qun Dong
- The DB Wuderegen Biomedical Technologies Co., Ltd, Zhenjiang, China
| | - Liang Chen
- Department of Anesthesiology, The Forth Hospital of Shijiazhuang, Shijiazhuang, Hebei, China
| | - Jingui Gao
- Department of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jiahua Zheng
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Zhongkang Li
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Qian Li
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
| | - Jianwu Dai
- Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China
- State Key Laboratory of Molecular Development Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Xianghua Huang
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical, University, 215 Heping West Road, Shijiazhuang, Hebei, China.
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12
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Li R, Feng D, Han S, Zhai X, Yu X, Fu Y, Jin F. Macrophages and fibroblasts in foreign body reactions: How mechanical cues drive cell functions? Mater Today Bio 2023; 22:100783. [PMID: 37701130 PMCID: PMC10494263 DOI: 10.1016/j.mtbio.2023.100783] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 08/23/2023] [Accepted: 08/28/2023] [Indexed: 09/14/2023] Open
Abstract
Biomaterials, when implanted in the human body, can induce a series of cell- and cytokine-related reactions termed foreign body reactions (FBRs). In the progression of FBRs, macrophages regulate inflammation and healing by polarizing to either a pro-inflammatory or pro-healing phenotype and recruit fibroblasts by secreting cytokines. Stimulated by the biomaterials, fibrotic capsule is formed eventually. The implant, along with its newly formed capsule, introduces various mechanical cues that influence cellular functions. Mechanosensing proteins, such as integrins or ion channels, transduce extracellular mechanical signals into cytoplasm biochemical signals in response to mechanical stimuli. Consequently, the morphology, migration mode, function, and polarization state of the cells are affected. Modulated by different intracellular signaling pathways and their crosstalk, the expression of fibrotic genes increases with fibroblast activation and fibroblast to myofibroblast transition under stiff or force stimuli. However, summarized in most current studies, the outcomes of macrophage polarization in the effect of different mechanical cues are inconsistent. The underlying mechanisms should be investigated with more advanced technology and considering more interfering aspects. Further research is needed to determine how to modulate the progression of fibrotic capsule formation in FBR artificially.
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Affiliation(s)
- Rihan Li
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
- Department of Breast and Reconstructive Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
| | - Dongdong Feng
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
- Department of Breast and Reconstructive Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
| | - Siyuan Han
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
- Department of Breast and Reconstructive Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
| | - Xiaoyue Zhai
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, Liaoning, 110000, China
| | - Xinmiao Yu
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
- Department of Breast and Reconstructive Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
| | - Yuanyuan Fu
- Department of Histology and Embryology, Basic Medical College, China Medical University, Shenyang, Liaoning, 110000, China
| | - Feng Jin
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, 110000, China
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13
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Stefanelli VL, Mintz B, Gandhi A, Smith J. Design matters: A comparison of natural versus synthetic skin substitutes across benchtop and porcine wound healing metrics: An experimental study. Health Sci Rep 2023; 6:e1462. [PMID: 37538960 PMCID: PMC10394260 DOI: 10.1002/hsr2.1462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/05/2023] [Accepted: 07/18/2023] [Indexed: 08/05/2023] Open
Abstract
Background and Aims Skin substitutes, essential tools for helping close full thickness wounds with minimal scarring, are available in both collagen-based and synthetic polyurethane constructions. Here we explore fundamental differences between two frequently used skin substitutes and discuss how these differences may impact in vivo performance. Methods Polyurethane- and collagen-based matrices were characterized in vitro for pore size via scanning electron microscopy, hydrophobicity via liquid contact angle, conformability via bending angle, and biocompatibility via fibroblast and keratinocyte adhesion and proliferation. These matrices were then evaluated in a full-thickness excisional pig wound study followed by histological analysis. Statistical analysis was performed using t-tests or one-way analysis of variances with Tukey's multiple post hoc comparisons, where appropriate. Results Average pore diameter in the tested polyurethane matrix was over four times larger than that of the collagen matrix (589 ± 297 µm vs. 132 ± 91 µm). Through liquid contact angle measurement, the collagen matrix (not measurable) was found to be hydrophilic compared to the hydrophobic polyurethane matrix (>90°). The collagen matrix was significantly more conformable than the polyurethane matrix (9 ± 2° vs. 84 ± 5° bending angle, respectively). Fibroblast and keratinocyte adhesion and proliferation assays elucidated a significantly greater ability of both cell types to attach and proliferate on collagen versus polyurethane. While the porcine study showed minimal contraction of either matrix material, histological findings between the two treatments were markedly different. Collagen matrices were associated with early fibroblast infiltration and fibroplasia, whereas polyurethane matrices elicited a strong multinucleated giant cell response and produced a network of comparatively aligned collagen fibrils. Conclusions The more favorable in vitro properties of the collagen matrix led to less inflammation and better overall tissue response in vivo. Overall, our findings demonstrate how the choice of biomaterial and its design directly translate to differing in vivo mechanisms of action and overall tissue quality.
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Affiliation(s)
| | - Benjamin Mintz
- Exploratory R&DIntegra LifeSciencesPrincetonNew JerseyUSA
| | - Ankur Gandhi
- Exploratory R&DIntegra LifeSciencesPrincetonNew JerseyUSA
| | - Jason Smith
- Exploratory R&DIntegra LifeSciencesPrincetonNew JerseyUSA
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14
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Moore JV, Burns J, McClelland N, Quinn J, McCoy CP. Understanding the properties of intermittent catheters to inform future development. Proc Inst Mech Eng H 2023:9544119231178468. [PMID: 37300485 DOI: 10.1177/09544119231178468] [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: 06/12/2023]
Abstract
Despite the extensive use of intermittent catheters (ICs) in healthcare, various issues persist for long-term IC users, such as pain, discomfort, infection, and tissue damage, including strictures, scarring and micro-abrasions. A lubricous IC surface is considered necessary to reduce patient pain and trauma, and therefore is a primary focus of IC development to improve patient comfort. While an important consideration, other factors should be routinely investigated to inform future IC development. An array of in vitro tests should be employed to assess IC's lubricity, biocompatibility and the risk of urinary tract infection development associated with their use. Herein, we highlight the importance of current in vitro characterisation techniques, the demand for optimisation and an unmet need to develop a universal 'toolkit' to assess IC properties.
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Affiliation(s)
- Jessica V Moore
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Jane Burns
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Nicola McClelland
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - James Quinn
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Colin P McCoy
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
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15
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Miron A, Giurcaneanu C, Mihai MM, Beiu C, Voiculescu VM, Popescu MN, Soare E, Popa LG. Antimicrobial Biomaterials for Chronic Wound Care. Pharmaceutics 2023; 15:1606. [PMID: 37376055 DOI: 10.3390/pharmaceutics15061606] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/09/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Chronic wounds encompass a myriad of lesions, including venous and arterial leg ulcers, diabetic foot ulcers (DFUs), pressure ulcers, non-healing surgical wounds and others. Despite the etiological differences, chronic wounds share several features at a molecular level. The wound bed is a convenient environment for microbial adherence, colonization and infection, with the initiation of a complex host-microbiome interplay. Chronic wound infections with mono- or poly-microbial biofilms are frequent and their management is challenging due to tolerance and resistance to antimicrobial therapy (systemic antibiotic or antifungal therapy or antiseptic topicals) and to the host's immune defense mechanisms. The ideal dressing should maintain moisture, allow water and gas permeability, absorb wound exudates, protect against bacteria and other infectious agents, be biocompatible, be non-allergenic, be non-toxic and biodegradable, be easy to use and remove and, last but not least, it should be cost-efficient. Although many wound dressings possess intrinsic antimicrobial properties acting as a barrier to pathogen invasion, adding anti-infectious targeted agents to the wound dressing may increase their efficiency. Antimicrobial biomaterials may represent a potential substitute for systemic treatment of chronic wound infections. In this review, we aim to describe the available types of antimicrobial biomaterials for chronic wound care and discuss the host response and the spectrum of pathophysiologic changes resulting from the contact between biomaterials and host tissues.
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Affiliation(s)
- Adrian Miron
- Department of General Surgery, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of General Surgery, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
| | - Calin Giurcaneanu
- Department of Oncologic Dermatology, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of Dermatology, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
| | - Mara Madalina Mihai
- Department of Oncologic Dermatology, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of Dermatology, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
- Department of Microbiology, Faculty of Biology, ICUB-Research Institute, University of Bucharest, No. 90 Panduri Str., 050663 Bucharest, Romania
| | - Cristina Beiu
- Department of Oncologic Dermatology, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of Dermatology, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
| | - Vlad Mihai Voiculescu
- Department of Oncologic Dermatology, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of Dermatology, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
| | - Marius Nicolae Popescu
- Department of Microbiology, Faculty of Biology, ICUB-Research Institute, University of Bucharest, No. 90 Panduri Str., 050663 Bucharest, Romania
- Department of Physical and Rehabilitation Medicine, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of Physical and Rehabilitation Medicine, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
| | - Elena Soare
- Department of Oncologic Dermatology, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
| | - Liliana Gabriela Popa
- Department of Oncologic Dermatology, Elias Emergency University Hospital, Carol Davila University of Medicine and Pharmacy, No. 37 Dionisie Lupu Str., 030167 Bucharest, Romania
- Clinic of Dermatology, Elias Emergency University Hospital, No. 17 Marasti Blvd., 011461 Bucharest, Romania
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16
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Assessing the response of human primary macrophages to defined fibrous architectures fabricated by melt electrowriting. Bioact Mater 2023; 21:209-222. [PMID: 36101857 PMCID: PMC9440261 DOI: 10.1016/j.bioactmat.2022.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 06/30/2022] [Accepted: 07/11/2022] [Indexed: 01/01/2023] Open
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17
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Abstract
The efficacy of implanted biomaterials is largely dependent on the response of the host's immune and stromal cells. Severe foreign body response (FBR) can impede the integration of the implant into the host tissue and compromise the intended mechanical and biochemical function. Many features of FBR, including late-stage fibrotic encapsulation of implants, parallel the formation of fibrotic scar tissue after tissue injury. Regenerative organisms like zebrafish and salamanders can avoid fibrosis after injury entirely, but FBR in these research organisms is rarely investigated because their immune competence is much lower than humans. The recent characterization of a regenerative mammal, the spiny mouse (Acomys), has inspired us to take a closer look at cellular regulation in regenerative organisms across the animal kingdom for insights into avoiding FBR in humans. Here, we highlight how major features of regeneration, such as blastema formation, macrophage polarization, and matrix composition, can be modulated across a range of regenerative research organisms to elucidate common features that may be harnessed to minimize FBR. Leveraging a deeper understanding of regenerative biology for biomaterial design may help to reduce FBR and improve device integration and performance.
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Affiliation(s)
- Sunaina Sapru
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Michele N Dill
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Chelsey S Simmons
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States.,J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
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18
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Basurto IM, Muhammad SA, Gardner GM, Christ GJ, Caliari SR. Controlling scaffold conductivity and pore size to direct myogenic cell alignment and differentiation. J Biomed Mater Res A 2022; 110:1681-1694. [PMID: 35762455 PMCID: PMC9540010 DOI: 10.1002/jbm.a.37418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 05/20/2022] [Accepted: 05/24/2022] [Indexed: 12/27/2022]
Abstract
Skeletal muscle's combination of three-dimensional (3D) anisotropy and electrical excitability is critical for enabling normal movement. We previously developed a 3D aligned collagen scaffold incorporating conductive polypyrrole (PPy) particles to recapitulate these key muscle properties and showed that the scaffold facilitated enhanced myotube maturation compared with nonconductive controls. To further optimize this scaffold design, this work assessed the influence of conductive polymer incorporation and scaffold pore architecture on myogenic cell behavior. Conductive PPy and poly(3,4-ethylenedioxythiophene) (PEDOT) particles were synthesized and mixed into a suspension of type I collagen and chondroitin sulfate prior to directional freeze-drying to produce anisotropic scaffolds. Energy dispersive spectroscopy revealed homogenous distribution of conductive PEDOT particles throughout the scaffolds that resulted in a threefold increase in electrical conductivity while supporting similar myoblast metabolic activity compared to nonconductive scaffolds. Control of freezing temperature enabled fabrication of PEDOT-doped scaffolds with a range of pore diameters from 98 to 238 μm. Myoblasts conformed to the anisotropic contact guidance cues independent of pore size to display longitudinal cytoskeletal alignment. The increased specific surface area of the smaller pore scaffolds helped rescue the initial decrease in myoblast metabolic activity observed in larger pore conductive scaffolds while also promoting modestly increased expression levels of the myogenic marker myosin heavy chain (MHC) and gene expression of myoblast determination protein (MyoD). However, cell infiltration to the center of the scaffolds was marginally reduced compared with larger pore variants. Together these data underscore the potential of aligned and PEDOT-doped collagen scaffolds for promoting myogenic cell organization and differentiation.
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Affiliation(s)
- Ivan M. Basurto
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVirginiaUSA
| | - Samir A. Muhammad
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVirginiaUSA
| | - Gregg M. Gardner
- Department of Chemical EngineeringUniversity of VirginiaCharlottesvilleVirginiaUSA
| | - George J. Christ
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVirginiaUSA
- Department of Orthopedic SurgeryUniversity of VirginiaCharlottesvilleVirginiaUSA
| | - Steven R. Caliari
- Department of Biomedical EngineeringUniversity of VirginiaCharlottesvilleVirginiaUSA
- Department of Chemical EngineeringUniversity of VirginiaCharlottesvilleVirginiaUSA
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19
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Hu H, Sun H, Jiang Z, Wang S, Liu C, Zou M, Ju R, Feng Z, Liu W, Wang T, Han B. Study on repair of abdominal wall defect rats with hernia mesh coated with chitosan-based photosensitive hydrogel. Carbohydr Polym 2022; 291:119577. [DOI: 10.1016/j.carbpol.2022.119577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 04/15/2022] [Accepted: 05/03/2022] [Indexed: 11/02/2022]
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20
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Guimier E, Carson L, David B, Lambert JM, Heery E, Malcolm RK. Pharmacological Approaches for the Prevention of Breast Implant Capsular Contracture. J Surg Res 2022; 280:129-150. [PMID: 35969932 DOI: 10.1016/j.jss.2022.06.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 06/17/2022] [Accepted: 06/29/2022] [Indexed: 11/15/2022]
Abstract
Capsular contracture is a common complication associated with breast implants following reconstructive or aesthetic surgery in which a tight or constricting scar tissue capsule forms around the implant, often distorting the breast shape and resulting in chronic pain. Capsulectomy (involving full removal of the capsule surrounding the implant) and capsulotomy (where the capsule is released and/or partly removed to create more space for the implant) are the most common surgical procedures used to treat capsular contracture. Various structural modifications of the implant device (including use of textured implants, submuscular placement of the implant, and the use of polyurethane-coated implants) and surgical strategies (including pre-operative skin washing and irrigation of the implant pocket with antibiotics) have been and/or are currently used to help reduce the incidence of capsular contracture. In this article, we review the pharmacological approaches-both commonly practiced in the clinic and experimental-reported in the scientific and clinical literature aimed at either preventing or treating capsular contracture, including (i) pre- and post-operative intravenous administration of drug substances, (ii) systemic (usually oral) administration of drugs before and after surgery, (iii) modification of the implant surface with grafted drug substances, (iv) irrigation of the implant or peri-implant tissue with drugs prior to implantation, and (v) incorporation of drugs into the implant shell or filler prior to surgery followed by drug release in situ after implantation.
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Affiliation(s)
| | - Louise Carson
- School of Pharmacy, Queen's University Belfast, Belfast, UK
| | - Benny David
- NuSil Technology LLC, Carpinteria, California
| | | | | | - R Karl Malcolm
- School of Pharmacy, Queen's University Belfast, Belfast, UK.
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21
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Liu K, He Y, Lu F. Research Progress on the Immunogenicity and Regeneration of Acellular Adipose Matrix: A Mini Review. Front Bioeng Biotechnol 2022; 10:881523. [PMID: 35733521 PMCID: PMC9207478 DOI: 10.3389/fbioe.2022.881523] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Acellular adipose matrix (AAM) has received increasing attention for soft tissue reconstruction, due to its abundant source, high long-term retention rate and in vivo adipogenic induction ability. However, the current decellularization methods inevitably affect native extracellular matrix (ECM) properties, and the residual antigens can trigger adverse immune reactions after transplantation. The behavior of host inflammatory cells mainly decides the regeneration of AAM after transplantation. In this review, recent knowledge of inflammatory cells for acellular matrix regeneration will be discussed. These advancements will inform further development of AAM products with better properties.
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22
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Hernandez JL, Woodrow KA. Medical Applications of Porous Biomaterials: Features of Porosity and Tissue-Specific Implications for Biocompatibility. Adv Healthc Mater 2022; 11:e2102087. [PMID: 35137550 PMCID: PMC9081257 DOI: 10.1002/adhm.202102087] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/17/2021] [Indexed: 12/14/2022]
Abstract
Porosity is an important material feature commonly employed in implants and tissue scaffolds. The presence of material voids permits the infiltration of cells, mechanical compliance, and outward diffusion of pharmaceutical agents. Various studies have confirmed that porosity indeed promotes favorable tissue responses, including minimal fibrous encapsulation during the foreign body reaction (FBR). However, increased biofilm formation and calcification is also described to arise due to biomaterial porosity. Additionally, the relevance of host responses like the FBR, infection, calcification, and thrombosis are dependent on tissue location and specific tissue microenvironment. In this review, the features of porous materials and the implications of porosity in the context of medical devices is discussed. Common methods to create porous materials are also discussed, as well as the parameters that are used to tune pore features. Responses toward porous biomaterials are also reviewed, including the various stages of the FBR, hemocompatibility, biofilm formation, and calcification. Finally, these host responses are considered in tissue specific locations including the subcutis, bone, cardiovascular system, brain, eye, and female reproductive tract. The effects of porosity across the various tissues of the body is highlighted and the need to consider the tissue context when engineering biomaterials is emphasized.
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Affiliation(s)
- Jamie L Hernandez
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98195, USA
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98195, USA
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Bonvallet PP, Damaraju SM, Modi HN, Stefanelli VL, Lin Q, Saini S, Gandhi A. Biophysical Characterization of a Novel Tri-Layer Placental Allograft Membrane. Adv Wound Care (New Rochelle) 2022; 11:43-55. [PMID: 33975444 PMCID: PMC9831246 DOI: 10.1089/wound.2020.1315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Objective: Placental tissues, including membranes composed of amnion and chorion, are promising options for the treatment of chronic wounds. Amnion and chorion contain multiple extracellular matrix (ECM) proteins and a multitude of growth factors and cytokines that, when used clinically, assist in the progression of difficult to heal wounds through restoration of a normal healing process. The objective of this study was to characterize the in vitro physical and biological properties of a dehydrated tri-layer placental allograft membrane (TPAM) consisting of a chorion layer sandwiched between two layers of amnion. Approach: Mechanical properties were evaluated by mechanical strength and enzyme degradation assays. The ECM composition of TPAM membranes was evaluated by histological staining while growth factors and cytokine presence was evaluated by a multiplex enzyme-linked immunosorbent assay. Proliferation, migration, and ECM secretion assays were performed with fibroblasts. Immunomodulatory properties were assessed by a pro-inflammatory cytokine reduction assay while the macrophage phenotype was determined by quantifying the ratio of M1 versus M2 secreted factors. Results: The unique three-layer construction improves mechanical handling properties over single- and bi-layer membranes. Results demonstrate that TPAM is rich in ECM proteins, growth factors, cytokines, and tissue inhibitors of metalloproteinases, and favorably influences fibroblast migration, proliferation, and ECM secretion when compared to negative controls. Furthermore, after processing and preservation, these membranes maintain their intrinsic immunomodulatory properties with the ability to suppress pro-inflammatory processes and modulate the M1 and M2 macrophage phenotype toward a pro-regenerative profile when compared to a negative control. Innovation: This is the first study to characterize both the biophysical and biological properties of a tri-layer placental membrane. Conclusion: This work demonstrates that TPAM has improved handling characteristics over single- and bi-layer membranes, stimulates pro-healing cellular responses, and advantageously modulates inflammatory responses, altogether making this scaffold a promising option for treating wounds, especially those that are complex or difficult to heal.
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Affiliation(s)
- Paul P. Bonvallet
- Product Development, Integra Life Sciences, Corp., Princeton, New Jersey, USA
- Correspondence: Product Development, Integra Life Sciences, Corp., 1100 Campus Road, Princeton, NJ 08540, USA.
| | - Sita M. Damaraju
- Product Development, Integra Life Sciences, Corp., Princeton, New Jersey, USA
| | - Heli N. Modi
- Product Development, Integra Life Sciences, Corp., Princeton, New Jersey, USA
| | | | - Qiaoling Lin
- Product Development, Integra Life Sciences, Corp., Princeton, New Jersey, USA
| | - Sunil Saini
- Product Development, Integra Life Sciences, Corp., Princeton, New Jersey, USA
| | - Ankur Gandhi
- Product Development, Integra Life Sciences, Corp., Princeton, New Jersey, USA
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The diameter factor of aligned membranes facilitates wound healing by promoting epithelialization in an immune way. Bioact Mater 2021; 11:206-217. [PMID: 34938924 PMCID: PMC8665262 DOI: 10.1016/j.bioactmat.2021.09.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/01/2021] [Accepted: 09/16/2021] [Indexed: 02/05/2023] Open
Abstract
Topographical properties, such as pattern and diameter, of biomaterials play important roles in influencing cell activities and manipulating the related immune response during wound healing. We prepared aligned electrospinning membranes with different fiber diameters, including 319 ± 100 nm (A300), 588 ± 132 nm (A600), and 1048 ± 130 nm (A1000), by adjusting the distance from the tip to the collector, the injection rate, and the concentration of the solution. The A300 membranes significantly improved cell proliferation and spreading and facilitated wound healing (epithelization and vascularization) with the regeneration of immature hair follicles compared to the other membranes. Transcriptomics revealed the underlying molecular mechanism that A300 could promote immune-related processes towards a pro-healing direction, significantly promoting keratinocyte migration and skin wound healing. All the results indicated that wound healing requires the active participation of the immune process, and that A300 was a potential candidate for guided skin regeneration applications. It is still unclear which diameter interval of aligned membranes is most suitable for tissue regeneration. Outstanding performances in the wound healing process was presented by the A300 membranes. The transcriptome revealed that A300 could promote immune related processes towards a pro-healing direction. A300 promoted keratinocytes migration and final wound healing partially through MMP12.
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Álvarez-López A, Colchero L, Elices M, Guinea GV, Pérez-Rigueiro J, González-Nieto D. Improved cell adhesion to activated vapor silanization-biofunctionalized Ti-6Al-4V surfaces with ECM-derived oligopeptides. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 133:112614. [PMID: 35527152 DOI: 10.1016/j.msec.2021.112614] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/09/2021] [Accepted: 12/12/2021] [Indexed: 01/22/2023]
Abstract
Titanium implants are widely used in traumatology and various orthopedic fields. Titanium and other metallic-based implants have limited structural and functional integration into the body, which translates into progressive prosthesis instability and the need for new surgical interventions that have enormous social and economic impacts. To enhance the biocompatibility of titanium implants, numerous biofunctionalization strategies have been developed. However, the problem persists, as more than 70% of implant failures are due to aseptic loosening. In this study we addressed the problem of improving the physiological engraftability and acceptability of titanium-based implants by applying a robust and versatile functionalization method based on the covalent immobilization of extracellular matrix (ECM)-derived oligopeptides on Ti-6Al-4V surfaces treated by activated vapor silanization (AVS). The feasibility of this technique was evaluated with two oligopeptides of different structures and compositions. These oligopeptides were immobilized on Ti-6Al-4V substrates by a combination of AVS and N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride/N-hydroxysuccinimide (EDC/NHS) crosslinking chemistry. The immobilization was shown to be stable and resistant to chemical denaturing upon sodium dodecyl sulfate treatment. On Ti-6Al-4V surfaces both peptides increased the attachment, spreading, rearrangement and directional growth of mesenchymal stem and progenitor cells (MSC) with chondro- and osteo-regenerative capacities. We also found that this biofunctionalization method (AVS-EDC/NHS) increased the attachment capacity of an immortalized cell line of neural origin with poor adhesive properties, highlighting the versatility and robustness of this method in terms of potential oligopeptides that may be used, and cell lineages whose anchorage to the biomaterial may be enhanced. Collectively, this novel functionalization strategy can accelerate the development of advanced peptide-functionalized metallic surfaces, which, in combination with host or exogenously implanted stem cells, have the potential to positively affect the osteoregenerative and osteointegrative abilities of metallic-based prostheses.
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Affiliation(s)
- Aroa Álvarez-López
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Madrid, Spain; Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Luis Colchero
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Madrid, Spain; Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Manuel Elices
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Madrid, Spain; Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Madrid, Spain; Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain; Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, 28040 Madrid, Spain
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Madrid, Spain; Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain; Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain; Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, 28040 Madrid, Spain.
| | - Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28223 Pozuelo de Alarcón, Madrid, Spain; Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain; Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain.
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Fodor M, Fodor L, Bota O. The role of nanomaterials and nanostructured surfaces for improvement of biomaterial peculiarities in vascular surgery: a review. PARTICULATE SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1080/02726351.2021.1871692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Marius Fodor
- Department of Vascular Surgery, First Surgical Clinic, Emergency District Hospital, Cluj-Napoca, Romania, Cluj-Napoca, Romania
| | - Lucian Fodor
- Department of Plastic Surgery, First Surgical Clinic, Emergency District Hospital, Cluj-Napoca, Romania, Cluj-Napoca, Romania
| | - Olimpiu Bota
- University Center of Orthopaedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
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Rationally designed drug delivery systems for the local treatment of resected glioblastoma. Adv Drug Deliv Rev 2021; 177:113951. [PMID: 34461201 DOI: 10.1016/j.addr.2021.113951] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/26/2021] [Accepted: 08/24/2021] [Indexed: 02/08/2023]
Abstract
Glioblastoma (GBM) is a particularly aggressive brain cancer associated with high recurrence and poor prognosis. The standard of care, surgical resection followed by concomitant radio- and chemotherapy, leads to low survival rates. The local delivery of active agents within the tumor resection cavity has emerged as an attractive means to initiate oncological treatment immediately post-surgery. This complementary approach bypasses the blood-brain barrier, increases the local concentration at the tumor site while reducing or avoiding systemic side effects. This review will provide a global overview on the local treatment for GBM with an emphasis on the lessons learned from past clinical trials. The main parameters to be considered to rationally design fit-of-purpose biomaterials and develop drug delivery systems for local administration in the GBM resection cavity to prevent the tumor recurrence will be described. The intracavitary local treatment of GBM should i) use materials that facilitate translation to the clinic; ii) be characterized by easy GMP effective scaling up and easy-handling application by the neurosurgeons; iii) be adaptable to fill the tumor-resected niche, mold to the resection cavity or adhere to the exposed brain parenchyma; iv) be biocompatible and possess mechanical properties compatible with the brain; v) deliver a therapeutic dose of rationally-designed or repurposed drug compound(s) into the GBM infiltrative margin. Proof of concept with high translational potential will be provided. Finally, future perspectives to facilitate the clinical translation of the local perisurgical treatment of GBM will be discussed.
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Yang Y, Zhang H, Komasa S, Morimoto Y, Sekino T, Kawazoe T, Okazaki J. UV/ozone irradiation manipulates immune response for antibacterial activity and bone regeneration on titanium. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 129:112377. [PMID: 34579896 DOI: 10.1016/j.msec.2021.112377] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/10/2021] [Accepted: 08/13/2021] [Indexed: 11/28/2022]
Abstract
The immunomodulatory antibacterial activity and osteoimmunomodulatory properties of implantable biomaterials significantly influence bone regeneration. Various types of ultraviolet (UV) instrument are currently in use to greatly enhance the antibacterial activity and osteoconductive capability of titanium, it remains unclear how UV treatment modulates immune response. Compared to traditional UV treatment, the combination of low-dose ozone with UV irradiation is considered a new option to give benefits to surface modification and reduce the drawbacks of UV and ozone individually. Herein, the aim of this study was to elucidate the immune-modulatory properties of macrophages on UV/ozone-irradiated titanium that serve as defense against S. aureus and the crosstalk between immune cells and osteoblasts. Three different cell and bacteria co-culture systems were developed in order to investigate the race between host cells and bacteria to occupy the surface. In vitro immunological experiments indicated that UV/ozone irradiation significantly enhanced the phagocytic and bactericidal activity of macrophages against S. aureus. Further, in vitro and in vivo studies evidenced the favorable osteoimmune environment for osteogenic differentiation and bone formation. This research suggests vital therapeutic potential of UV/ozone irradiation for preventing the biomaterial-associated infections and achieving favorable bone formation simultaneously.
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Affiliation(s)
- Yuanyuan Yang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan.
| | - Honghao Zhang
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan.
| | - Satoshi Komasa
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan
| | - Yukihiro Morimoto
- The Institute of Scientific and Industrial Research, Osaka University, Suita, Osaka 565-0871, Japan
| | - Tohru Sekino
- The Institute of Scientific and Industrial Research, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takayoshi Kawazoe
- Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan
| | - Joji Okazaki
- Department of Removable Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuha-hanazono-cho, Hirakata, Osaka 573-1121, Japan
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Silicone Implants Immobilized with Interleukin-4 Promote the M2 Polarization of Macrophages and Inhibit the Formation of Fibrous Capsules. Polymers (Basel) 2021; 13:polym13162630. [PMID: 34451169 PMCID: PMC8400985 DOI: 10.3390/polym13162630] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 12/13/2022] Open
Abstract
Breast augmentations with silicone implants can have adverse effects on tissues that, in turn, lead to capsular contracture (CC). One of the potential ways of overcoming CC is to control the implant/host interaction using immunomodulatory agents. Recently, a high ratio of anti-inflammatory (M2) macrophages to pro-inflammatory (M1) macrophages has been reported to be an effective tissue regeneration approach at the implant site. In this study, a biofunctionalized implant was coated with interleukin (IL)-4 to inhibit an adverse immune reaction and promoted tissue regeneration by promoting polarization of macrophages into the M2 pro-healing phenotype in the long term. Surface wettability, nitrogen content, and atomic force microscopy data clearly showed the successful immobilization of IL-4 on the silicone implant. Furthermore, in vitro results revealed that IL-4-coated implants were able to decrease the secretion of inflammatory cytokines (IL-6 and tumor necrosis factor-α) and induced the production of IL-10 and the upregulation of arginase-1 (mannose receptor expressed by M2 macrophage). The efficacy of this immunomodulatory implant was further demonstrated in an in vivo rat model. The animal study showed that the presence of IL-4 diminished the capsule thickness, the amount of collagen, tissue inflammation, and the infiltration of fibroblasts and myofibroblasts. These results suggest that macrophage phenotype modulation can effectively reduce inflammation and fibrous CC on a silicone implant conjugated with IL-4.
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Ryma M, Tylek T, Liebscher J, Blum C, Fernandez R, Böhm C, Kastenmüller W, Gasteiger G, Groll J. Translation of Collagen Ultrastructure to Biomaterial Fabrication for Material-Independent but Highly Efficient Topographic Immunomodulation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101228. [PMID: 34240485 DOI: 10.1002/adma.202101228] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/19/2021] [Indexed: 06/13/2023]
Abstract
Supplement-free induction of cellular differentiation and polarization solely through the topography of materials is an auspicious strategy but has so far significantly lagged behind the efficiency and intensity of media-supplementation-based protocols. Consistent with the idea that 3D structural motifs in the extracellular matrix possess immunomodulatory capacity as part of the natural healing process, it is found in this study that human-monocyte-derived macrophages show a strong M2a-like prohealing polarization when cultured on type I rat-tail collagen fibers but not on collagen I films. Therefore, it is hypothesized that highly aligned nanofibrils also of synthetic polymers, if packed into larger bundles in 3D topographical biomimetic similarity to native collagen I, would induce a localized macrophage polarization. For the automated fabrication of such bundles in a 3D printing manner, the strategy of "melt electrofibrillation" is pioneered by the integration of flow-directed polymer phase separation into melt electrowriting and subsequent selective dissolution of the matrix polymer postprocessing. This process yields nanofiber bundles with a remarkable structural similarity to native collagen I fibers, particularly for medical-grade poly(ε-caprolactone). These biomimetic fibrillar structures indeed induce a pronounced elongation of human-monocyte-derived macrophages and unprecedentedly trigger their M2-like polarization similar in efficacy as interleukin-4 treatment.
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Affiliation(s)
- Matthias Ryma
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
| | - Tina Tylek
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
| | - Julia Liebscher
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
| | - Carina Blum
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
| | - Robin Fernandez
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
| | - Christoph Böhm
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
| | - Wolfgang Kastenmüller
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the Julius-Maximilians-Universität Würzburg, 97080, Würzburg, Germany
| | - Georg Gasteiger
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the Julius-Maximilians-Universität Würzburg, 97080, Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication and Bavarian Polymer Institute, Julius-Maximilians-Universität Würzburg, 97070, Würzburg, Germany
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Joukhdar H, Seifert A, Jüngst T, Groll J, Lord MS, Rnjak-Kovacina J. Ice Templating Soft Matter: Fundamental Principles and Fabrication Approaches to Tailor Pore Structure and Morphology and Their Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100091. [PMID: 34236118 DOI: 10.1002/adma.202100091] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/22/2021] [Indexed: 06/13/2023]
Abstract
Porous scaffolds are widely used in biomedical applications where pore size and morphology influence a range of biological processes, including mass transfer of solutes, cellular interactions and organization, immune responses, and tissue vascularization, as well as drug delivery from biomaterials. Ice templating, one of the most widely utilized techniques for the fabrication of porous materials, allows control over pore morphology by controlling ice formation in a suspension of solutes. By fine-tuning freezing and solute parameters, ice templating can be used to incorporate pores with tunable morphological features into a wide range of materials using a simple, accessible, and scalable process. While soft matter is widely ice templated for biomedical applications and includes commercial and clinical products, the principles underpinning its ice templating are not reviewed as well as their inorganic counterparts. This review describes and critically evaluates fundamental principles, fabrication and characterization approaches, and biomedical applications of ice templating in polymer-based biomaterials. It describes the utility of porous scaffolds in biomedical applications, highlighting biological mechanisms impacted by pore features, outlines the physical and thermodynamic mechanisms underpinning ice templating, describes common fabrication setups, critically evaluates complexities of ice templating specific to polymers, and discusses future directions in this field.
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Affiliation(s)
- Habib Joukhdar
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Annika Seifert
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070, Würzburg, Germany
| | - Tomasz Jüngst
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070, Würzburg, Germany
| | - Jürgen Groll
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070, Würzburg, Germany
| | - Megan S Lord
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Jelena Rnjak-Kovacina
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
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Wang D, Tan J, Zhu H, Mei Y, Liu X. Biomedical Implants with Charge-Transfer Monitoring and Regulating Abilities. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004393. [PMID: 34166584 PMCID: PMC8373130 DOI: 10.1002/advs.202004393] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/12/2021] [Indexed: 05/06/2023]
Abstract
Transmembrane charge (ion/electron) transfer is essential for maintaining cellular homeostasis and is involved in many biological processes, from protein synthesis to embryonic development in organisms. Designing implant devices that can detect or regulate cellular transmembrane charge transfer is expected to sense and modulate the behaviors of host cells and tissues. Thus, charge transfer can be regarded as a bridge connecting living systems and human-made implantable devices. This review describes the mode and mechanism of charge transfer between organisms and nonliving materials, and summarizes the strategies to endow implants with charge-transfer regulating or monitoring abilities. Furthermore, three major charge-transfer controlling systems, including wired, self-activated, and stimuli-responsive biomedical implants, as well as the design principles and pivotal materials are systematically elaborated. The clinical challenges and the prospects for future development of these implant devices are also discussed.
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Affiliation(s)
- Donghui Wang
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
- School of Materials Science and EngineeringHebei University of TechnologyTianjin300130China
| | - Ji Tan
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
| | - Hongqin Zhu
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
- Department of Materials ScienceFudan UniversityShanghai200433China
| | - Yongfeng Mei
- Department of Materials ScienceFudan UniversityShanghai200433China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institutes of CeramicsChinese Academy of SciencesShanghai200050China
- School of Chemistry and Materials ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024China
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Hernandez JL, Park J, Yao S, Blakney AK, Nguyen HV, Katz BH, Jensen JT, Woodrow KA. Effect of tissue microenvironment on fibrous capsule formation to biomaterial-coated implants. Biomaterials 2021; 273:120806. [PMID: 33905960 PMCID: PMC8135119 DOI: 10.1016/j.biomaterials.2021.120806] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 03/26/2021] [Accepted: 03/31/2021] [Indexed: 12/19/2022]
Abstract
Within tissue exposed to the systemic immune system, lymphocytes and fibroblasts act against biomaterials via the development of a fibrous capsule, known as the foreign body reaction (FBR). Inspired by the natural tolerance that the uterine cavity has to foreign bodies, our study explores the role of microenvironment across classical (subcutaneous) and immune privileged (uterine) tissues in the development of the FBR. As a model biomaterial, we used electrospun fibers loaded with sclerosing agents to provoke scar tissue growth. Additionally, we integrated these materials onto an intrauterine device as a platform for intrauterine biomaterial studies. Polyester materials in vitro achieved drug release up to 10 days, greater pro-inflammatory and pro-healing cytokine expression, and the addition of gelatin enabled greater fibroblast attachment. We observed the materials that induced the greatest FBR in the mouse, had no effect when inserted at the utero-tubal junction of non-human primates. These results suggest that the FBR varies across different tissue microenvironments, and a dampened fibrotic response exists in the uterine cavity, possibly due to immune privilege. Further study of immune privileged tissue factors on biomaterials could broaden our understanding of the FBR and inform new methods for achieving biocompatibility in vivo.
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Affiliation(s)
- Jamie L Hernandez
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Jaehyung Park
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Shan Yao
- Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Ave, Beaverton, OR, 97006, USA
| | - Anna K Blakney
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Hienschi V Nguyen
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Bob H Katz
- ContraMed LLC, 900 E. Hamilton Ave, Campbell, CA, 95008, USA
| | - Jeffrey T Jensen
- Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Ave, Beaverton, OR, 97006, USA
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA.
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Crawford L, Wyatt M, Bryers J, Ratner B. Biocompatibility Evolves: Phenomenology to Toxicology to Regeneration. Adv Healthc Mater 2021; 10:e2002153. [PMID: 33829678 PMCID: PMC8221530 DOI: 10.1002/adhm.202002153] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/26/2021] [Indexed: 12/20/2022]
Abstract
The word "biocompatibility," is inconsistent with the observations of healing for so-called biocompatible biomaterials. The vast majority of the millions of medical implants in humans today, presumably "biocompatible," are walled off by a dense, avascular, crosslinked collagen capsule, hardly suggestive of life or compatibility. In contrast, one is now seeing examples of implant biomaterials that lead to a vascularized reconstruction of localized tissue, a biological reaction different from traditional biocompatible materials that generate a foreign body capsule. Both the encapsulated biomaterials and the reconstructive biomaterials qualify as "biocompatible" by present day measurements of biocompatibility. Yet, this new generation of materials would seem to heal "compatibly" with the living organism, where older biomaterials are isolated from the living organism by the dense capsule. This review/perspective article will explore this biocompatibility etymological conundrum by reviewing the history of the concepts around biocompatibility, today's standard methods for assessing biocompatibility, a contemporary view of the foreign body reaction and finally, a compendium of new biomaterials that heal without the foreign body capsule. A new definition of biocompatibility is offered here to address advances in biomaterials design leading to biomaterials that heal into the body in a facile manner.
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Affiliation(s)
- Lars Crawford
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
| | - Meghan Wyatt
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
| | - James Bryers
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
| | - Buddy Ratner
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
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Mohajeri S, Amsden BG. In Vivo Degradation Mechanism and Biocompatibility of a Biodegradable Aliphatic Polycarbonate: Poly(Trimethylene Carbonate- co-5-Hydroxy Trimethylene Carbonate). ACS APPLIED BIO MATERIALS 2021; 4:3686-3696. [PMID: 35014453 DOI: 10.1021/acsabm.1c00160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A recently developed viscous liquid aliphatic polycarbonate, poly(trimethylene carbonate-co-5-hydroxy trimethylene carbonate), has advantageous properties for the delivery of acid-sensitive drugs such as proteins and peptides. This copolymer degrades in vitro via an alkaline-catalyzed intramolecular cyclization reaction yielding oligo (trimethylene carbonate), glycerol, and carbon dioxide, but its in vivo degradation mechanisms are presently unknown. The in vivo degradation mechanism and tissue response to this copolymer were investigated following subcutaneous implantation in Wistar rats. The molecular weight and composition of the copolymer varied in the same manner following subcutaneous implantation as observed in vitro. These findings suggest that the copolymer also degraded in vivo principally via intramolecular cyclization. The tissue response in terms of the inflammatory zone cell density, fibrous capsule thickness, and macrophage response was intermediate to that of two clinically used biodegradable sutures, Vicryl and Monocryl, indicating that the copolymer can be considered biotolerable. Collectively, the data show that further development of this copolymer as a drug delivery material is warranted.
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Affiliation(s)
- Sara Mohajeri
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada.,Human Mobility Research Centre, Kingston General Hospital, Kingston, Ontario K7L 2V7, Canada
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada.,Human Mobility Research Centre, Kingston General Hospital, Kingston, Ontario K7L 2V7, Canada
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Restoring Facial Contour and Harmony Using Biphasic Calcium Phosphate Bioceramics. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2021; 9:e3516. [PMID: 33854862 PMCID: PMC8032359 DOI: 10.1097/gox.0000000000003516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 01/07/2021] [Indexed: 11/27/2022]
Abstract
Background: The restoration of facial contour is one of the pillars for the treatment of facial disharmonies and deformities. Fat transplantation and fillers have been widely used to improve the positioning of soft tissues, which are, however, directly related to the conditions and positioning of the underlying bone tissue. Recontouring of the latter has been performed using osteotomies and several types of bone grafts or biomaterials, as inlay or onlay grafts/implants. Here, biphasic calcium phosphate bioceramics were applied in a series of cases, their long-term results are shown, and their advantages, discussed. Methods: A retrospective analysis of 20 patients, who were subjected to facial recontour with onlay implants of biphasic calcium phosphate bioceramics, is reported. Patients were seeking to improve facial harmony due to congenital deformities, trauma, tumor resection or signs of aging, and were followed for up to 16 years. Clinical data, radiographic images, and information regarding pain and other findings were retrieved from medical records. Results: Six patients were men and 14 were women. Their ages ranged from 19 to 64 years. Bioceramics were implanted under the periosteum through external or intraoral incisions. Some patients underwent combined procedures, such as rhinoplasties or facial lifting. None of the patients presented exacerbated inflammation or pain. One of them had infection in the intraoral incision, which was resolved with medication. Conclusion: All patients had improved facial contours following the use of bio-ceramics to augment bone tissue and presented stable results at long-term evaluation.
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Hosseinpour S, Walsh LJ, Xu C. Biomedical application of mesoporous silica nanoparticles as delivery systems: a biological safety perspective. J Mater Chem B 2021; 8:9863-9876. [PMID: 33047764 DOI: 10.1039/d0tb01868f] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The application of mesoporous silica nanoparticles (MSNs) as drug delivery systems to deliver drugs, proteins, and genes has expanded considerably in recent years, using in vitro and animal studies. For future translation to clinical applications, the biological safety aspects of MSNs must be considered carefully. This paper reviews the biosafety of MSNs, examining key issues such as biocompatibility, effects on immune cells and erythrocytes, biodistribution, biodegradation and clearance, and how these vary depending on the effects of the physical and chemical properties of MSNs such as particle size, porosity, morphology, surface charge, and chemical modifications. The future use of MSNs as a delivery system must extend beyond what has been learnt thus far using rodent animal models to encompass larger animals.
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Affiliation(s)
- Sepanta Hosseinpour
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
| | - Laurence J Walsh
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
| | - Chun Xu
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
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Weigel T, Brennecke J, Hansmann J. Improvement of the Electronic-Neuronal Interface by Natural Deposition of ECM. MATERIALS 2021; 14:ma14061378. [PMID: 33809094 PMCID: PMC7999149 DOI: 10.3390/ma14061378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/22/2021] [Accepted: 03/09/2021] [Indexed: 01/11/2023]
Abstract
The foreign body reaction to neuronal electrode implants limits potential applications as well as the therapeutic period. Developments in the basic electrode design might improve the tissue compatibility and thereby reduce the foreign body reaction. In this work, the approach of embedding 3D carbon nanofiber electrodes in extracellular matrix (ECM) synthesized by human fibroblasts for a compatible connection to neuronal cells was investigated. Porous electrode material was manufactured by solution coelectrospinning of polyacrylonitrile and polyamide as a fibrous porogen. Moreover, NaCl represented an additional particulate porogen. To achieve the required conductivity for an electrical interface, meshes were carbonized. Through the application of two different porogens, the electrodes’ flexibility and porosity was improved. Human dermal fibroblasts were cultured on the electrode surface for ECM generation and removed afterwards. Scanning electron microscopy imaging revealed a nano fibrous ECM network covering the carbon fibers. The collagen amount of the ECM coating was quantified by hydroxyproline-assays. The modification with the natural protein coating on the electrode functionality resulted in a minor increase of the electrical capacity, which slightly improved the already outstanding electrical interface properties. Increased cell numbers of SH-SY5Y cell line on ECM-modified electrodes demonstrated an improved cell adhesion. During cell differentiation, the natural ECM enhanced the formation of neurites regarding length and branching. The conducted experiments indicated the prevention of direct cell-electrode contacts by the modification, which might help to shield temporary the electrode from immunological cells to reduce the foreign body reaction and improve the electrodes’ tissue integration.
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Affiliation(s)
- Tobias Weigel
- Translational Center for Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, 97082 Wuerzburg, Germany;
- Department Tissue Engineering and Regenerative Medicine, University Hospital Wuerzburg, 97070 Wuerzburg, Germany;
- Correspondence:
| | - Julian Brennecke
- Department Tissue Engineering and Regenerative Medicine, University Hospital Wuerzburg, 97070 Wuerzburg, Germany;
| | - Jan Hansmann
- Translational Center for Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, 97082 Wuerzburg, Germany;
- Department Tissue Engineering and Regenerative Medicine, University Hospital Wuerzburg, 97070 Wuerzburg, Germany;
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Vimalraj S, Yuvashree R, Hariprabu G, Subramanian R, Murali P, Veeraiyan DN, Thangavelu L. Zebrafish as a potential biomaterial testing platform for bone tissue engineering application: A special note on chitosan based bioactive materials. Int J Biol Macromol 2021; 175:379-395. [PMID: 33556401 DOI: 10.1016/j.ijbiomac.2021.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/25/2021] [Accepted: 02/01/2021] [Indexed: 12/12/2022]
Abstract
Biomaterials function as an essential aspect of tissue engineering and have a profound impact on cell growth and subsequent tissue regeneration. The development of new biomaterials requires a potential platform to understand the host-biomaterial interaction, which is crucial for successful biomaterial implantation. Biomaterials analyzed in rodent models for in vivo research are cost-effective but tedious, and the practice has many technical difficulties. As an alternative, zebrafish provide an excellent biomaterial testing platform over the current rodent models. During growth and recovery, zebrafish bone morphogenesis shows a variety of inductive signals involved in the cycle that are close to those influencing differentiation of bone and cartilage in mammals, including humans. This platform is cheap, optically transparent, quick to change genes, and provides reliable reproducibility on short life cycles. Chitosan is a well-known biomaterial in the field of tissue engineering. In view of its documented use in bone regeneration, the biological characterization of chitosan-based bioactive materials in the zebrafish model has been featured in an outstanding note. We, therefore, outlined this review of the zebrafish as a potential in vivo research model for the rapid characterization of the biological properties of new biomaterials for bone tissue engineering applications.
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Affiliation(s)
- Selvaraj Vimalraj
- Centre for Biotechnology, Anna University, Chennai 600 025, Tamil Nadu, India; Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600 077, Tamil Nadu, India.
| | | | - Gopal Hariprabu
- Centre for Biotechnology, Anna University, Chennai 600 025, Tamil Nadu, India
| | - Raghunandhakumar Subramanian
- Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600 077, Tamil Nadu, India
| | - Palraju Murali
- Department of Zoology, N.M.S.S. Vellaichamy Nadar College, Nagamalai, Madurai, Tamil Nadu, India
| | - Deepak Nallaswamy Veeraiyan
- Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600 077, Tamil Nadu, India
| | - Lakshmi Thangavelu
- Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600 077, Tamil Nadu, India
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40
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Fagali NS, Madrid MA, Pérez Maceda BT, López Fernández ME, Lozano Puerto RM, Fernández Lorenzo de Mele M. Effect of degradation products of iron-bioresorbable implants on the physiological behavior of macrophages in vitro. Metallomics 2020; 12:1841-1850. [PMID: 33155003 DOI: 10.1039/d0mt00151a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The degradation of bioresorbable metals in vivo changes the physicochemical properties in the environment of an implant, such as a stent in the artery wall, and may induce the alteration of the functions of the surrounding cells. The Fe-degradation, from bioresorbable stents, is a particularly intricate process because it leads to the release of soluble (SDP) and insoluble degradation products (IDP) of varied composition. Macrophages are involved in the resorption of the exogenous agents coming from degradation of these materials. In the present work an Fe0 ring, made with a pure Fe wire, in contact with macrophage cell cultures was used to simulate the behaviour of a biodegradable Fe-based implant in a biological environment. Non-invasive time-lapse optical microscopy was applied to obtain images of macrophages exposed to Fe-degradation products, without using staining to avoid distortions and artefacts. It was noticed that as metal degraded, the IDP formed in situ accumulated close to the Fe0 ring. In this zone, the macrophages showed a dynamic process of uptake of dark Fe-containing products, confirmed by SEM-EDX. These macrophages showed alterations in the morphology and decrease in the motility and viability. The inability of the macrophages to move and to degrade the engulfed products caused a long persistence of IDP in the zone closest to the metal. The deleterious effects of IDP accumulated close to the ring, were significantly worse than those observed in the experiments made with (1) concentrated salt solutions (Fe3+ salt 3 mM), with the same amount of precipitates but uniformly distributed in the well, and (2) diluted salt solutions (Fe3+ salt 1 mM) with mainly soluble species. The results were confirmed by standard staining protocols that revealed dead cells close to the Fe0 ring and oxidative stress in cells exposed to both soluble and insoluble species.
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Affiliation(s)
- Natalia S Fagali
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT La Plata, CONICET - Facultad de Ciencias Exactas, UNLP, La Plata, Argentina.
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41
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Joshi Navare K, Colombani T, Rezaeeyazdi M, Bassous N, Rana D, Webster T, Memic A, Bencherif SA. Needle-injectable microcomposite cryogel scaffolds with antimicrobial properties. Sci Rep 2020; 10:18370. [PMID: 33110210 PMCID: PMC7591905 DOI: 10.1038/s41598-020-75196-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 10/01/2020] [Indexed: 12/24/2022] Open
Abstract
Porous three-dimensional hydrogel scaffolds have an exquisite ability to promote tissue repair. However, because of their high water content and invasive nature during surgical implantation, hydrogels are at an increased risk of bacterial infection. Recently, we have developed elastic biomimetic cryogels, an advanced type of polymeric hydrogel, that are syringe-deliverable through hypodermic needles. These needle-injectable cryogels have unique properties, including large and interconnected pores, mechanical robustness, and shape-memory. Like hydrogels, cryogels are also susceptible to colonization by microbial pathogens. To that end, our minimally invasive cryogels have been engineered to address this challenge. Specifically, we hybridized the cryogels with calcium peroxide microparticles to controllably produce bactericidal hydrogen peroxide. Our novel microcomposite cryogels exhibit antimicrobial properties and inhibit antibiotic-resistant bacteria (MRSA and Pseudomonas aeruginosa), the most common cause of biomaterial implant failure in modern medicine. Moreover, the cryogels showed negligible cytotoxicity toward murine fibroblasts and prevented activation of primary bone marrow-derived dendritic cells ex vivo. Finally, in vivo data suggested tissue integration, biodegradation, and minimal host inflammatory responses when the antimicrobial cryogels, even when purposely contaminated with bacteria, were subcutaneously injected in mice. Collectively, these needle-injectable microcomposite cryogels show great promise for biomedical applications, especially in tissue engineering and regenerative medicine.
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Affiliation(s)
- Kasturi Joshi Navare
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Thibault Colombani
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | | | - Nicole Bassous
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Devyesh Rana
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Thomas Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
- Wenzhou Institute for Biomaterials and Engineering, Wenzhou, 325001, China
| | - Adnan Memic
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Sidi A Bencherif
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA.
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, USA.
- Sorbonne University, UTC CNRS UMR 7338, Biomechanics and Bioengineering (BMBI), University of Technology of Compiègne, 60203, Compiègne, France.
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
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42
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Grierson I, Minckler D, Rippy MK, Marshall AJ, Collignon N, Bianco J, Detry B, Johnstone MA. A novel suprachoroidal microinvasive glaucoma implant: in vivo biocompatibility and biointegration. BMC Biomed Eng 2020; 2:10. [PMID: 33073174 PMCID: PMC7556975 DOI: 10.1186/s42490-020-00045-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/22/2020] [Indexed: 12/29/2022] Open
Abstract
Background A major challenge for any glaucoma implant is their ability to provide long-term intraocular pressure lowering efficacy. The formation of a low-permeability fibrous capsule around the device often leads to obstructed drainage channels, which may impair the drainage function of devices. These foreign body-related limitations point to the need to develop biologically inert biomaterials to improve performance in reaching long-term intraocular pressure reduction. The aim of this study was to evaluate in vivo (in rabbits) the ocular biocompatibility and tissue integration of a novel suprachoroidal microinvasive glaucoma implant, MINIject™ (iSTAR Medical, Wavre, Belgium). Results In two rabbit studies, no biocompatibility issue was induced by the suprachoroidal, ab-externo implantation of the MINIject™ device. Clinical evaluation throughout the 6 post-operative months between the sham and test groups were similar, suggesting most reactions were related to the ab-externo surgical technique used for rabbits, rather than the implant material itself. Histological analysis of ocular tissues at post-operative months 1, 3 and 6 revealed that the implant was well-tolerated and induced only minimal fibroplasia and thus minimal encapsulation around the implant. The microporous structure of the device became rapidly colonized by cells, mostly by macrophages through cell migration, which do not, by their nature, impede the flow of aqueous humor through the device. Time-course analysis showed that once established, pore colonization was stable over time. No fibrosis nor dense connective tissue development were observed within any implant at any time point. The presence of pore colonization may be the process by which encapsulation around the implant is minimized, thus preserving the permeability of the surrounding tissues. No degradation nor structural changes of the implant occurred during the course of both studies. Conclusions The novel MINIject™ microinvasive glaucoma implant was well-tolerated in ocular tissues of rabbits, with observance of biointegration, and no biocompatibility issues. Minimal fibrous encapsulation and stable cellular pore colonization provided evidence of preserved drainage properties over time, suggesting that the implant may produce a long-term ability to enhance aqueous outflow.
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Affiliation(s)
- Ian Grierson
- Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, UK
| | - Don Minckler
- University of California, Irvine School of Medicine, Irvine, CA USA
| | | | | | - Nathalie Collignon
- Department of Ophthalmology, Centre Hospitalier Universitaire of Liège, Liège, Belgium
| | | | - Benoit Detry
- iSTAR Medical SA, Avenue Sabin 6, 1300 Wavre, Belgium
| | - Murray A Johnstone
- Department of Ophthalmology, University of Washington, Seattle, Washington USA
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43
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Lawson JH, Niklason LE, Roy-Chaudhury P. Challenges and novel therapies for vascular access in haemodialysis. Nat Rev Nephrol 2020; 16:586-602. [PMID: 32839580 PMCID: PMC8108319 DOI: 10.1038/s41581-020-0333-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2020] [Indexed: 02/07/2023]
Abstract
Advances in standards of care have extended the life expectancy of patients with kidney failure. However, options for chronic vascular access for haemodialysis - an essential part of kidney replacement therapy - have remained unchanged for decades. The high morbidity and mortality associated with current vascular access complications highlights an unmet clinical need for novel techniques in vascular access and is driving innovation in vascular access care. The development of devices, biological approaches and novel access techniques has led to new approaches to controlling fistula geometry and manipulating the underlying cellular and molecular pathways of the vascular endothelium, and influencing fistula maturation and formation through the use of external mechanical methods. Innovations in arteriovenous graft materials range from small modifications to the graft lumen to the creation of completely novel bioengineered grafts. Steps have even been taken to create new devices for the treatment of patients with central vein stenosis. However, these emerging therapies face difficult hurdles, and truly creative approaches to vascular access need resources that include well-designed clinical trials, frequent interaction with regulators, interventionalist education and sufficient funding. In addition, the heterogeneity of patients with kidney failure suggests it is unlikely that a 'one-size-fits-all' approach for effective vascular access will be feasible in the current environment.
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Affiliation(s)
- Jeffrey H Lawson
- Department of Surgery, Duke University, Durham, NC, USA.
- Humacyte, Inc., Durham, NC, USA.
| | - Laura E Niklason
- Humacyte, Inc., Durham, NC, USA
- School of Engineering & Applied Science, Yale University, New Haven, CT, USA
| | - Prabir Roy-Chaudhury
- University of North Carolina Kidney Center, Chapel Hill, NC, USA
- WG (Bill) Hefner VA Medical Center, Salisbury, NC, USA
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44
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Haase T, Klopfleisch R, Krost A, Sauter T, Kratz K, Peter J, Jung F, Lendlein A, Zohlnhöfer D, Rüder C. In vivo biocompatibility study of degradable homo- versus multiblock copolymers and their (micro)structure compared to an established biomaterial. Clin Hemorheol Microcirc 2020; 75:163-176. [PMID: 31929151 DOI: 10.3233/ch-190748] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Copolyetheresterurethane (PDC) is a biodegradable, shape-memory biomaterial, which has been shown to be of low toxicity and pro-angiogenic in vitro. In the present study we examined the in vivo compatibility of PDC as a compression molded film and as electrospun scaffolds and its well established constituent, the homopolymer poly(p-dioxanone) (PPDO), which were compared with the clinically used poly[(vinylidene fluoride)-co-hexafluoropropene] (PVDF) as reference material. The materials were implanted in the subcutaneous tissue of mice and the host responses were analyzed histologically 7 and 28 days after implantation.All materials induced a foreign body response (FRB) including the induction of foreign body giant cells and a peripheral fibrous capsule. PDC, PPDO and PVDF films showed no signs of degradation after 28 days. PDC films showed a significantly reduced associated macrophage layer and fibrous capsule on their surface. Few fragments of PDC and PPDO scaffolds were present at the implantation site, while PVDF scaffolds were still present in large amounts at day 28. Especially aligned electrospun PDC scaffold induced a significantly thinner fibrous and a slightly reduced inflammatory response after 28 days of implantation. In addition, only PDC aligned fibrous scaffold structures induced a significant increase in angiogenesis.In summary, PDC films outperformed PPDO and PVDF films in terms of compatibility, especially in capsule and macrophage layer thickness. Through microstructuring of PDC and PPDO into scaffolds an almost complete degradation was observed after 28 days, while their respective films remained almost unchanged. However, the capsule thickness of all scaffolds was comparable to the films after 28 days. Finally, the parallel arrangement of PDC fibers enabled a strong enhancement of angiogenesis within the scaffold. Hence, material chemistries influence overall compatibility in vivo, while angiogenesis could be influenced more strongly by microstructural parameters than chemical ones.
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Affiliation(s)
- Tobias Haase
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Robert Klopfleisch
- Institute for Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Annalena Krost
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany
| | - Tilman Sauter
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Evonik Creavis GmbH, Marl, Germany
| | - Karl Kratz
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Jan Peter
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Friedrich Jung
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Andreas Lendlein
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Dietlind Zohlnhöfer
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Constantin Rüder
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
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45
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Xu J, Moon H, Xu J, Lim J, Fischer T, McNally HA, Sintim HO, Lee H. One-Step Large-Scale Nanotexturing of Nonplanar PTFE Surfaces to Induce Bactericidal and Anti-inflammatory Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:26893-26904. [PMID: 32437600 PMCID: PMC8176282 DOI: 10.1021/acsami.0c04729] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Here we demonstrate a simple and scalable nanotexturing method for both planar (films) and nonplanar (tubes) polytetrafluoroethylene (PTFE) surfaces using a commercial desktop oxygen plasma etcher. The simple process can generate semiordered nanopillar structures on both tubular and planar samples with high radial and axial uniformity. We found that the resulting surfaces exhibit good in vitro bactericidal and in vivo anti-inflammatory properties. When tested against Staphylococcus aureus, the nanotextured surfaces showed significantly decreased live bacteria coverage and increased dead bacteria coverage, demonstrating significant bactericidal functionality. Moreover, the etched planar PTFE films exhibited better healing and inflammatory responses in the subcutis of C57BL/6 mice over 7 and 21 days, evidenced by a thinner inflammatory band, lower collagen deposition, and decreased macrophage infiltration. Our results suggest the possibility of using this simple process to generate large scale biomimetic nanotextured surfaces with good antibiofouling properties to enhance the functionality of many implantable and other biomedical devices.
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Affiliation(s)
- Jian Xu
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, Indiana 47907, United States
| | - Haesoo Moon
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jinjia Xu
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jongcheon Lim
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, Indiana 47907, United States
| | - Thomas Fischer
- School of Engineering Technology, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Helen A McNally
- School of Engineering Technology, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Herman O Sintim
- Department of Chemistry, Center for Drug Discovery, Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, Indiana 47907, United States
| | - Hyowon Lee
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Center for Implantable Devices, Purdue University, West Lafayette, Indiana 47907, United States
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46
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Mandal A, Clegg JR, Anselmo AC, Mitragotri S. Hydrogels in the clinic. Bioeng Transl Med 2020; 5:e10158. [PMID: 32440563 PMCID: PMC7237140 DOI: 10.1002/btm2.10158] [Citation(s) in RCA: 186] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 03/21/2020] [Accepted: 03/22/2020] [Indexed: 12/13/2022] Open
Abstract
Injectable hydrogels are one of the most widely investigated and versatile technologies for drug delivery and tissue engineering applications. Hydrogels' versatility arises from their tunable structure, which has been enabled by considerable advances in fields such as materials engineering, polymer science, and chemistry. Advances in these fields continue to lead to invention of new polymers, new approaches to crosslink polymers, new strategies to fabricate hydrogels, and new applications arising from hydrogels for improving healthcare. Various hydrogel technologies have received regulatory approval for healthcare applications ranging from cancer treatment to aesthetic corrections to spinal fusion. Beyond these applications, hydrogels are being studied in clinical settings for tissue regeneration, incontinence, and other applications. Here, we analyze the current clinical landscape of injectable hydrogel technologies, including hydrogels that have been clinically approved or are currently being investigated in clinical settings. We summarize our analysis to highlight key clinical areas that hydrogels have found sustained success in and further discuss challenges that may limit their future clinical translation.
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Affiliation(s)
- Abhirup Mandal
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute for Biologically Inspired Engineering, Harvard UniversityCambridgeMassachusettsUSA
| | - John R. Clegg
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute for Biologically Inspired Engineering, Harvard UniversityCambridgeMassachusettsUSA
| | - Aaron C. Anselmo
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of PharmacyUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Samir Mitragotri
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute for Biologically Inspired Engineering, Harvard UniversityCambridgeMassachusettsUSA
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47
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Narancic T, Cerrone F, Beagan N, O’Connor KE. Recent Advances in Bioplastics: Application and Biodegradation. Polymers (Basel) 2020; 12:E920. [PMID: 32326661 PMCID: PMC7240402 DOI: 10.3390/polym12040920] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/07/2020] [Accepted: 04/13/2020] [Indexed: 12/12/2022] Open
Abstract
The success of oil-based plastics and the continued growth of production and utilisation can be attributed to their cost, durability, strength to weight ratio, and eight contributions to the ease of everyday life. However, their mainly single use, durability and recalcitrant nature have led to a substantial increase of plastics as a fraction of municipal solid waste. The need to substitute single use products that are not easy to collect has inspired a lot of research towards finding sustainable replacements for oil-based plastics. In addition, specific physicochemical, biological, and degradation properties of biodegradable polymers have made them attractive materials for biomedical applications. This review summarises the advances in drug delivery systems, specifically design of nanoparticles based on the biodegradable polymers. We also discuss the research performed in the area of biophotonics and challenges and opportunities brought by the design and application of biodegradable polymers in tissue engineering. We then discuss state-of-the-art research in the design and application of biodegradable polymers in packaging and emphasise the advances in smart packaging development. Finally, we provide an overview of the biodegradation of these polymers and composites in managed and unmanaged environments.
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Affiliation(s)
- Tanja Narancic
- UCD Earth Institute and School of Biomolecular and Biomedical Science, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland; (T.N.); (F.C.); (N.B.)
- BiOrbic - Bioeconomy Research Centre, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland
| | - Federico Cerrone
- UCD Earth Institute and School of Biomolecular and Biomedical Science, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland; (T.N.); (F.C.); (N.B.)
- BiOrbic - Bioeconomy Research Centre, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland
| | - Niall Beagan
- UCD Earth Institute and School of Biomolecular and Biomedical Science, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland; (T.N.); (F.C.); (N.B.)
| | - Kevin E. O’Connor
- UCD Earth Institute and School of Biomolecular and Biomedical Science, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland; (T.N.); (F.C.); (N.B.)
- BiOrbic - Bioeconomy Research Centre, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland
- School of Biomolecular and Biomedical Sciences, Earth Institute, O’Brien Centre for Science, University College Dublin, Belfield, 4, D04 N2E5 Dublin, Ireland
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48
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Sun L, Li X, Xu M, Yang F, Wang W, Niu X. In vitro immunomodulation of magnesium on monocytic cell toward anti-inflammatory macrophages. Regen Biomater 2020; 7:391-401. [PMID: 32793384 PMCID: PMC7415003 DOI: 10.1093/rb/rbaa010] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/12/2020] [Accepted: 02/22/2020] [Indexed: 12/20/2022] Open
Abstract
Biodegradable magnesium (Mg) has shown great potential advantages over current bone fixation devices and vascular scaffold technologies; however, there are few reports on the immunomodulation of corrosive Mg products, the micron-sized Mg particles (MgMPs). Human monocytic leukemia cell line THP-1 was set as the in vitro cell model to estimate the immunomodulation of MgMPs on cell proliferation, apoptosis, polarization and inflammatory reaction. Our results indicated high-concentration of Mg2+ demoted the proliferation of the THP-1 cells and, especially, THP-1-derived macrophages, which was a potential factor that could affect cell function, but meanwhile, cell apoptosis was almost not affected by Mg2+. In particular, the inflammation regulatory effects of MgMPs were investigated. Macrophages exposed to Mg2+ exhibited down-regulated expressions of M1 subtype markers and secretions of pro-inflammatory cytokines, up-regulated expression of M2 subtype marker and secretion of anti-inflammatory cytokine. These results indicated Mg2+ could convert macrophages from M0 to M2 phenotype, and the bioeffects of MgMPs on human inflammatory cells were most likely due to the Mg2+-induced NF-κB activation reduction. Together, our results proved Mg2+ could be used as a new anti-inflammatory agent to suppress inflammation in clinical applications, which may provide new ideas for studying the immunomodulation of Mg-based implants on human immune system.
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Affiliation(s)
- Lei Sun
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China
| | - Xiaoyu Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China
| | - Menghan Xu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China
| | - Fenghe Yang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China
| | - Wei Wang
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, No. 38 XueYuan Road, Haidian District, Beijing 100191, China
| | - Xufeng Niu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, No. 37 XueYuan Road, Haidian District, Beijing 100083, China
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Torre E, Iviglia G, Cassinelli C, Morra M, Russo N. Polyphenols from grape pomace induce osteogenic differentiation in mesenchymal stem cells. Int J Mol Med 2020; 45:1721-1734. [PMID: 32236566 PMCID: PMC7169659 DOI: 10.3892/ijmm.2020.4556] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 02/19/2020] [Indexed: 12/13/2022] Open
Abstract
Polyphenols are increasingly investigated for the treatment of periodontitis and research on their use in dental biomaterials is currently being conducted. Grape pomace extracts are a rich source of polyphenols. In the present study, the polyphenols of two different types of grape pomace were characterized and identified by high-performance liquid chromatography-diode array detector, and the effect of polyphenol-rich grape pomace extracts on mesenchymal stem cell (MSC) osteogenic differentiation was investigated. Solid-liquid extraction was used to recover polyphenols from red and white grape pomace. The two extracts have been characterized through the phenolic content and antioxidant power. Human MSCs (hMSCs) from the bone marrow were cultured both with and without given amounts (10 or 20 µg/ml) of the obtained pomace extracts. Their effects on cell differentiation were evaluated by reverse transcription-quantitative polymerase chain reaction, compared with relevant controls. Results showed that both pomace extracts, albeit different in phenolic composition and concentration, induced multiple effects on hMSC gene expression, such as a decreased receptor activator of nuclear factor κ-B ligand/osteoprotegerin ratio and an enhanced expression of genes involved in osteoblast differentiation, thus suggesting a shift of hMSCs towards osteoblast differentiation. The obtained results provided data in favor of the exploitation of polyphenol properties from grape pomace extracts as complementary active molecules for dental materials and devices for bone regeneration in periodontal defects.
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Affiliation(s)
- Elisa Torre
- Nobil Bio Ricerche srl, I‑14037 Portacomaro, Italy
| | | | | | - Marco Morra
- Nobil Bio Ricerche srl, I‑14037 Portacomaro, Italy
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50
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A retrievable implant for the long-term encapsulation and survival of therapeutic xenogeneic cells. Nat Biomed Eng 2020; 4:814-826. [PMID: 32231313 PMCID: PMC8051527 DOI: 10.1038/s41551-020-0538-5] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 02/18/2020] [Indexed: 12/20/2022]
Abstract
The long-term function of transplanted therapeutic cells typically requires systemic immune suppression. Here, we show that a retrievable implant comprising of a silicone reservoir and a porous polymeric membrane protects human cells encapsulated in it after implant transplantation in the intraperitoneal space of immunocompetent mice. Membranes with pores 1 µm in diameter allowed host macrophages to migrate into the device without the loss of transplanted cells, whereas membranes with pore sizes under 0.8 µm prevented their infiltration by immune cells. A synthetic polymer coating prevented fibrosis and was necessary for the long-term function of the device. For over 130 days the device supported human cells engineered to secrete erythropoietin in immunocompetent mice as well as transgenic human cells carrying an inducible gene circuit for the on-demand secretion of erythropoietin. Pancreatic islets from rats encapsulated in the device and implanted in diabetic mice restored normoglycaemia in the mice for over 75 days. The biocompatible device provides a retrievable solution for the transplantation of engineered cells in the absence of immunosuppression.
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