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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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Saramet V, Stan MS, Ripszky Totan A, Țâncu AMC, Voicu-Balasea B, Enasescu DS, Rus-Hrincu F, Imre M. Analysis of Gingival Fibroblasts Behaviour in the Presence of 3D-Printed versus Milled Methacrylate-Based Dental Resins-Do We Have a Winner? J Funct Biomater 2024; 15:147. [PMID: 38921521 PMCID: PMC11204847 DOI: 10.3390/jfb15060147] [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: 04/22/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
Computer-aided design and computer-aided manufacturing (CAD/CAM) techniques are based on either subtractive (milling prefabricated blocks) or additive (3D printing) methods, and both are used for obtaining dentistry materials. Our in vitro study aimed to investigate the behavior of human gingival fibroblasts exposed to methacrylate (MA)-based CAD/CAM milled samples in comparison with that of MA-based 3D-printed samples to better elucidate the mechanisms of cell adaptability and survival. The proliferation of human gingival fibroblasts was measured after 2 and 24 h of incubation in the presence of these samples using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the membrane integrity was assessed through the lactate dehydrogenase release. The level of reactive oxygen species, expression of autophagy-related protein LC3B-I, and detection of GSH and caspase 3/7 were evaluated by fluorescence staining. The MMP-2 levels were measured using a Milliplex MAP kit. The incubation with MA-based 3D-printed samples significantly reduced the viability, by 16% and 28% from control after 2 and 24 h, respectively. There was a 25% and 55% decrease in the GSH level from control after 24 h of incubation with the CAD/CAM milled and 3D-printed samples, respectively. In addition, higher levels of LC3B-I and MMP-2 were obtained after 24 h of incubation with the MA-based 3D samples compared to the CAD/CAM milled ones. Therefore, our results outline that the MA-CAD/CAM milled samples displayed good biocompatibility during 24-h exposure, while MA-3D resins are proper for short-term utilization (less than 24 h).
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Affiliation(s)
- Veaceslav Saramet
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (V.S.); (M.I.)
| | - Miruna S. Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania
| | - Alexandra Ripszky Totan
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.R.T.); (D.S.E.); (F.R.-H.)
- The Interdisciplinary Center for Dental Research and Development, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17–23 Plevnei Street, 020021 Bucharest, Romania;
| | - Ana Maria Cristina Țâncu
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (V.S.); (M.I.)
| | - Bianca Voicu-Balasea
- The Interdisciplinary Center for Dental Research and Development, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 17–23 Plevnei Street, 020021 Bucharest, Romania;
| | - Dan Sebastian Enasescu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.R.T.); (D.S.E.); (F.R.-H.)
| | - Florentina Rus-Hrincu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.R.T.); (D.S.E.); (F.R.-H.)
| | - Marina Imre
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (V.S.); (M.I.)
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3
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Zhou X, Wang Y, Ji J, Zhang P. Materials Strategies to Overcome the Foreign Body Response. Adv Healthc Mater 2024:e2304478. [PMID: 38666550 DOI: 10.1002/adhm.202304478] [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: 12/15/2023] [Revised: 04/20/2024] [Indexed: 05/03/2024]
Abstract
The foreign body response (FBR) is an immune-mediated reaction that can occur with most biomaterials and biomedical devices. The FBR initiates a deterioration in the performance of implantable devices, representing a longstanding challenge that consistently hampers their optimal utilization. Over the last decade, significant strides are achieved based on either hydrogel design or surface modifications to mitigate the FBR. This review delves into recent material strategies aimed at mitigating the FBR. Further, the authors look forward to future novel anti-FBR materials from the perspective of clinical translation needs. Such prospective materials hold the potential to attenuate local immune responses, thereby significantly enhancing the overall performance of implantable devices.
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Affiliation(s)
- Xianchi Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Youxiang Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Jian Ji
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
- State Key Laboratory of Transvascular Implantation Devices, The Second Affiliated Hospital, Zhejiang University School of Medicine, 88 Jiefang Rd, Hangzhou, 311202, P. R. China
| | - Peng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
- State Key Laboratory of Transvascular Implantation Devices, The Second Affiliated Hospital, Zhejiang University School of Medicine, 88 Jiefang Rd, Hangzhou, 311202, P. R. China
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Mahanty M, Dutta B, Ou W, Zhu X, Bromberg JS, He X, Rahaman SO. Macrophage microRNA-146a is a central regulator of the foreign body response to biomaterial implants. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.03.588018. [PMID: 38617341 PMCID: PMC11014630 DOI: 10.1101/2024.04.03.588018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Host recognition and immune-mediated foreign body response (FBR) to biomaterials can adversely affect the functionality of implanted materials. To identify key targets underlying the generation of FBR, here we perform analysis of microRNAs (miR) and mRNAs responses to implanted biomaterials. We found that (a) miR-146a levels inversely affect macrophage accumulation, foreign body giant cell (FBGC) formation, and fibrosis in a murine implant model; (b) macrophage-derived miR-146a is a crucial regulator of the FBR and FBGC formation, as confirmed by global and cell-specific knockout of miR-146a; (c) miR-146a modulates genes related to inflammation, fibrosis, and mechanosensing; (d) miR-146a modulates tissue stiffness near the implant during FBR; and (e) miR-146a is linked to F-actin production and cellular traction force induction, which are vital for FBGC formation. These novel findings suggest that targeting macrophage miR-146a could be a selective strategy to inhibit FBR, potentially improving the biocompatibility of biomaterials.
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Widener AE, Roberts A, Phelps EA. Granular Hydrogels for Harnessing the Immune Response. Adv Healthc Mater 2023:e2303005. [PMID: 38145369 PMCID: PMC11196388 DOI: 10.1002/adhm.202303005] [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: 09/08/2023] [Revised: 11/13/2023] [Indexed: 12/26/2023]
Abstract
This review aims to understand the current progress in immune-instructive granular hydrogels and identify the key features used as immunomodulatory strategies. Published work is systematically reviewed and relevant information about granular hydrogels used throughout these studies is collected. The base polymer, microgel generation technique, polymer crosslinking chemistry, particle size and shape, annealing strategy, granular hydrogel stiffness, pore size and void space, degradability, biomolecule presentation, and drug release are cataloged for each work. Several granular hydrogel parameters used for immune modulation: porosity, architecture, bioactivity, drug release, cell delivery, and modularity, are identified. The authors found in this review that porosity is the most significant factor influencing the innate immune response to granular hydrogels, while incorporated bioactivity is more significant in influencing adaptive immune responses. Here, the authors' findings and summarized results from each section are presented and suggestions are made for future studies to better understand the benefits of using immune-instructive granular hydrogels.
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Affiliation(s)
- Adrienne E Widener
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, 1275 Center Dr., Gainesville, 32611, USA
| | - Abilene Roberts
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, 1275 Center Dr., Gainesville, 32611, USA
| | - Edward A Phelps
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, 1275 Center Dr., Gainesville, 32611, USA
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Seymour AJ, Kilian D, Navarro RS, Hull SM, Heilshorn SC. 3D printing microporous scaffolds from modular bioinks containing sacrificial, cell-encapsulating microgels. Biomater Sci 2023; 11:7598-7615. [PMID: 37824082 PMCID: PMC10842430 DOI: 10.1039/d3bm00721a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Microgel-based biomaterials have inherent porosity and are often extrudable, making them well-suited for 3D bioprinting applications. Cells are commonly introduced into these granular inks post-printing using cell infiltration. However, due to slow cell migration speeds, this strategy struggles to achieve depth-independent cell distributions within thick 3D printed geometries. To address this, we leverage granular ink modularity by combining two microgels with distinct functions: (1) structural, UV-crosslinkable microgels made from gelatin methacryloyl (GelMA) and (2) sacrificial, cell-laden microgels made from oxidized alginate (AlgOx). We hypothesize that encapsulating cells within sacrificial AlgOx microgels would enable the simultaneous introduction of void space and release of cells at depths unachievable through cell infiltration alone. Blending the microgels in different ratios produces a family of highly printable GelMA : AlgOx microgel inks with void fractions ranging from 0.03 to 0.35. As expected, void fraction influences the morphology of human umbilical vein endothelial cells (HUVEC) within GelMA : AlgOx inks. Crucially, void fraction does not alter the ideal HUVEC distribution seen throughout the depth of 3D printed samples. This work presents a strategy for fabricating constructs with tunable porosity and depth-independent cell distribution, highlighting the promise of microgel-based inks for 3D bioprinting.
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Affiliation(s)
- Alexis J Seymour
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - David Kilian
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Renato S Navarro
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Sarah M Hull
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Sarah C Heilshorn
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA.
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7
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Lázár I, Čelko L, Menelaou M. Aerogel-Based Materials in Bone and Cartilage Tissue Engineering-A Review with Future Implications. Gels 2023; 9:746. [PMID: 37754427 PMCID: PMC10530393 DOI: 10.3390/gels9090746] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
Aerogels are fascinating solid materials known for their highly porous nanostructure and exceptional physical, chemical, and mechanical properties. They show great promise in various technological and biomedical applications, including tissue engineering, and bone and cartilage substitution. To evaluate the bioactivity of bone substitutes, researchers typically conduct in vitro tests using simulated body fluids and specific cell lines, while in vivo testing involves the study of materials in different animal species. In this context, our primary focus is to investigate the applications of different types of aerogels, considering their specific materials, microstructure, and porosity in the field of bone and cartilage tissue engineering. From clinically approved materials to experimental aerogels, we present a comprehensive list and summary of various aerogel building blocks and their biological activities. Additionally, we explore how the complexity of aerogel scaffolds influences their in vivo performance, ranging from simple single-component or hybrid aerogels to more intricate and organized structures. We also discuss commonly used formulation and drying methods in aerogel chemistry, including molding, freeze casting, supercritical foaming, freeze drying, subcritical, and supercritical drying techniques. These techniques play a crucial role in shaping aerogels for specific applications. Alongside the progress made, we acknowledge the challenges ahead and assess the near and far future of aerogel-based hard tissue engineering materials, as well as their potential connection with emerging healing techniques.
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Affiliation(s)
- István Lázár
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary
| | - Ladislav Čelko
- Central European Institute of Technology, Brno University of Technology, Purkynova 656/123, 612 00 Brno, Czech Republic;
| | - Melita Menelaou
- Department of Chemical Engineering, Cyprus University of Technology, 30 Arch. Kyprianos Str., Limassol 3036, Cyprus
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8
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Siddiqui AM, Thiele F, Stewart RN, Rangnick S, Weiss GJ, Chen BK, Silvernail JL, Strickland T, Nesbitt JJ, Lim K, Schwarzbauer JE, Schwartz J, Yaszemski MJ, Windebank AJ, Madigan NN. Open-Spaced Ridged Hydrogel Scaffolds Containing TiO 2-Self-Assembled Monolayer of Phosphonates Promote Regeneration and Recovery Following Spinal Cord Injury. Int J Mol Sci 2023; 24:10250. [PMID: 37373396 DOI: 10.3390/ijms241210250] [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: 03/06/2023] [Revised: 05/31/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
The spinal cord has a poor ability to regenerate after an injury, which may be due to cell loss, cyst formation, inflammation, and scarring. A promising approach to treating a spinal cord injury (SCI) is the use of biomaterials. We have developed a novel hydrogel scaffold fabricated from oligo(poly(ethylene glycol) fumarate) (OPF) as a 0.08 mm thick sheet containing polymer ridges and a cell-attractive surface on the other side. When the cells are cultured on OPF via chemical patterning, the cells attach, align, and deposit ECM along the direction of the pattern. Animals implanted with the rolled scaffold sheets had greater hindlimb recovery compared to that of the multichannel scaffold control, which is likely due to the greater number of axons growing across it. The immune cell number (microglia or hemopoietic cells: 50-120 cells/mm2 in all conditions), scarring (5-10% in all conditions), and ECM deposits (Laminin or Fibronectin: approximately 10-20% in all conditions) were equal in all conditions. Overall, the results suggest that the scaffold sheets promote axon outgrowth that can be guided across the scaffold, thereby promoting hindlimb recovery. This study provides a hydrogel scaffold construct that can be used in vitro for cell characterization or in vivo for future neuroprosthetics, devices, or cell and ECM delivery.
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Affiliation(s)
- Ahad M Siddiqui
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Frederic Thiele
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
- Program in Human Medicine, Paracelsus Medical Private University, 5020 Salzburg, Austria
| | - Rachel N Stewart
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, H91 TK33 Galway, Ireland
| | - Simone Rangnick
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
- Program in Human Medicine, Paracelsus Medical Private University, 5020 Salzburg, Austria
| | - Georgina J Weiss
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
- Program in Human Medicine, Paracelsus Medical Private University, 90419 Nuremberg, Germany
| | - Bingkun K Chen
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Tammy Strickland
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway, H91 TK33 Galway, Ireland
| | | | - Kelly Lim
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
| | - Jean E Schwarzbauer
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA
| | - Jeffrey Schwartz
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
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9
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Lowen JM, Bond GC, Griffin KH, Shimamoto NK, Thai VL, Leach JK. Multisized Photoannealable Microgels Regulate Cell Spreading, Aggregation, and Macrophage Phenotype through Microporous Void Space. Adv Healthc Mater 2023; 12:e2202239. [PMID: 36719946 PMCID: PMC10198868 DOI: 10.1002/adhm.202202239] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 01/06/2023] [Indexed: 02/02/2023]
Abstract
Microgels are an emerging platform for in vitro models and guiding cell fate due to their inherent porosity and tunability. This work describes a light-based technique for rapidly annealing microgels across a range of diameters. Utilizing 8-arm poly(ethylene) glycol-vinyl sulfone, the number of arms available for crosslinking, functionalization, and annealing is stoichiometrically controlled. Small and large microgels are fabricated to explore how microgel diameter impacts void space and the role of porosity on cell spreading, cell aggregation, and macrophage polarization. Mesenchymal stromal cells spread rapidly in both formulations, yet the smaller microgels permit a higher cell density. When seeded with macrophages, the smaller microgels promote an M1 phenotype, while larger microgels promote an M2 phenotype. As another application, the inherent porosity of annealed microgels is leveraged to induce cell aggregation. Finally, the microgels are implanted to examine how different size microgels influence endogenous cell invasion and macrophage polarization. The use of ultraviolet light allows for microgels to be noninvasively injected into a desired mold or wound defect before annealing, and microgels of different properties combined to create a heterogeneous scaffold. This approach is clinically relevant given its tunability and fast annealing time.
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Affiliation(s)
- Jeremy M. Lowen
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - Gabriella C. Bond
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
| | - Katherine H. Griffin
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- School of Veterinary Medicine, University of California, Davis, CA 95616
| | | | - Victoria L. Thai
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - J. Kent Leach
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
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10
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Qian W, Gong G, Su H, Zhao Y, Fu W, Wang Y, Ji W, Sun X, Zhang B, Ma L, Li J, Zhang X, Li S, Sheng E, Lu Y, Zhu D. Hepar-on-a-sensor-platform with hybridization chain reaction amplification strategy to intuitively monitor the hepatoxicity of natural compounds. Acta Biomater 2023; 160:73-86. [PMID: 36804823 DOI: 10.1016/j.actbio.2023.02.021] [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: 10/20/2022] [Revised: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023]
Abstract
The irrational use of natural compounds in the treatment of diseases can lead to serious side effects, especially hepatoxicity, and its toxic effects are usually cumulative and imperceptible. Therefore, an accurate sensing platform is urgently needed to monitor the hepatotoxicity of natural compounds. Here, we deposited a thermo-responsive alginate-RGD/Pluronic hydrogel to construct an in vitro three-dimensional(3D) hepar-platform, and a thorough validation was adopted to evaluate the bioprinted hepatic constructs. The engineered hepar-platform was then employed to access its biological response toward Emodin (EM) and Triptolide (TP), two typical hepatotoxic natural compounds. Subsequently, we integrated it with a robust fluorescent sensor based on hybridization chain reaction amplification strategy (HCR) to monitor the early hepatotoxic biomarker - glutathione-S-transferase-alpha (GST-α) secreted by this 3D constructs. Our study was the first attempt to construct an accurate hepar-on-a-sensor platform that could effectively detect GST-α for monitoring the hepatoxic effects of natural compounds. The limit of detection of the platform was 0.3 ng ml-1 and the accuracy of this platform was verified by enzyme linked immunosorbent assay. Furthermore, the variation of GST-α induced by EM and TP was consistent with hepatotoxicity studies, thus providing an important application value for evaluating the hepatotoxicity of natural compounds. STATEMENT OF SIGNIFICANCE: 1. We deposited a thermo-responsive alginate-RGD/Pluronic hydrogel to construct an in vitro three-dimensional(3D) hepar-platform, and elucidated the essential reasons why hybrid bioinks more suitable for 3D extrusion from biomaterials itself. Also, a thorough validation associated with a series of important proteins and genes involved in liver cell metabolism was adopted to evaluate the bioprinted hepatic constructs accurately 2. Glutathione-S-transferase-alpha is a soluble trace biomarker for acute hepatotoxic injury, the hepatotoxic effects of natural compounds on the secretion of GST-α has not been reported to date. We integrated our 3D hepar-platform with recognition molecules-aptamers and HCR amplification strategy to monitor the variation of GST-α, aiming at developing a robust and stable fluorescent biosensing platform to monitor the hepatoxicity of natural compounds.
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Affiliation(s)
- Wenhui Qian
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China; Department of Pharmacy, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, PR China
| | - Guangming Gong
- Department of Pharmacy, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, PR China
| | - Hua Su
- Department of Pharmacy, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, PR China
| | - Yang Zhao
- Department of Biochemistry and Molecular Biology, School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Wenjuan Fu
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Yuting Wang
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Wenwen Ji
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Xuetong Sun
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Bei Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Lijuan Ma
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Jianting Li
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Xiangying Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Su Li
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Enze Sheng
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China
| | - Yin Lu
- School of Pharmacy, Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
| | - Dong Zhu
- School of Pharmacy, Nanjing University of Chinese Medicine,Nanjing, Jiangsu 210023, PR China.
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11
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Azman N, Khairul WM, Sarbon N. A comprehensive review on biocompatible film sensor containing natural extract: Active/intelligent food packaging. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109189] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Jain N, Lord JM, Vogel V. Mechanoimmunology: Are inflammatory epigenetic states of macrophages tuned by biophysical factors? APL Bioeng 2022; 6:031502. [PMID: 36051106 PMCID: PMC9427154 DOI: 10.1063/5.0087699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
Many inflammatory diseases that are responsible for a majority of deaths are still uncurable, in part as the underpinning pathomechanisms and how to combat them is still poorly understood. Tissue-resident macrophages play pivotal roles in the maintenance of tissue homeostasis, but if they gradually convert to proinflammatory phenotypes, or if blood-born proinflammatory macrophages persist long-term after activation, they contribute to chronic inflammation and fibrosis. While biochemical factors and how they regulate the inflammatory transcriptional response of macrophages have been at the forefront of research to identify targets for therapeutic interventions, evidence is increasing that physical factors also tune the macrophage phenotype. Recently, several mechanisms have emerged as to how physical factors impact the mechanobiology of macrophages, from the nuclear translocation of transcription factors to epigenetic modifications, perhaps even DNA methylation. Insight into the mechanobiology of macrophages and associated epigenetic modifications will deliver novel therapeutic options going forward, particularly in the context of increased inflammation with advancing age and age-related diseases. We review here how biophysical factors can co-regulate pro-inflammatory gene expression and epigenetic modifications and identify knowledge gaps that require urgent attention if this therapeutic potential is to be realized.
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Affiliation(s)
| | | | - Viola Vogel
- Department of Health Sciences and Technology, Institute of Translational Medicine, ETH Zurich, Zurich, Switzerland
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13
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Clavijo-Grimaldo D, Casadiego-Torrado CA, Villalobos-Elías J, Ocampo-Páramo A, Torres-Parada M. Characterization of Electrospun Poly(ε-caprolactone) Nano/Micro Fibrous Membrane as Scaffolds in Tissue Engineering: Effects of the Type of Collector Used. MEMBRANES 2022; 12:membranes12060563. [PMID: 35736270 PMCID: PMC9228247 DOI: 10.3390/membranes12060563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 04/24/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
Abstract
Electrospinning is an electrohydrodynamic technique that transforms a polymer solution into nano/microscopic diameter fibers under the influence of a high-voltage electric field. Its use in the fabrication of nano/micro fibrous membranes as scaffolds for tissue engineering has increased rapidly in recent years due to its efficiency and reproducibility. The objective of this study is to show how the use of the same polymeric solution (polycaprolactone 9% w/v in chloroform: isopropanol 50:50) and identical electrohydrodynamic deposition parameters produces fibers with different characteristics using a flat collector platform with movements in the X and Y axes vs. a conventional rotary collector. The manufactured nano/microfibers show significant differences in most of their characteristics (morphology, roughness, hydrophilicity, and mechanical properties). Regarding the diameter and porosity of the fibers, the results were similar. Given that scaffolds must be designed to guarantee adequate survival and the proliferation and migration of a certain cell type, in this study we analyze how the variations in the characteristics of the fibers obtained are essential to defining their potential application.
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Affiliation(s)
- Dianney Clavijo-Grimaldo
- School of Medicine, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.V.-E.); (A.O.-P.); (M.T.-P.)
- School of Medicine, Fundación Universitaria Sanitas, Bogotá 111321, Colombia;
- Correspondence:
| | | | - Juan Villalobos-Elías
- School of Medicine, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.V.-E.); (A.O.-P.); (M.T.-P.)
| | - Adolfo Ocampo-Páramo
- School of Medicine, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.V.-E.); (A.O.-P.); (M.T.-P.)
| | - Magreth Torres-Parada
- School of Medicine, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (J.V.-E.); (A.O.-P.); (M.T.-P.)
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14
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Liu S, Wang T, Li S, Wang X. Application Status of Sacrificial Biomaterials in 3D Bioprinting. Polymers (Basel) 2022; 14:polym14112182. [PMID: 35683853 PMCID: PMC9182955 DOI: 10.3390/polym14112182] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/20/2022] [Accepted: 05/23/2022] [Indexed: 02/04/2023] Open
Abstract
Additive manufacturing, also known as three-dimensional (3D) printing, relates to several rapid prototyping (RP) technologies, and has shown great potential in the manufacture of organoids and even complex bioartificial organs. A major challenge for 3D bioprinting complex org unit ans is the competitive requirements with respect to structural biomimeticability, material integrability, and functional manufacturability. Over the past several years, 3D bioprinting based on sacrificial templates has shown its unique advantages in building hierarchical vascular networks in complex organs. Sacrificial biomaterials as supporting structures have been used widely in the construction of tubular tissues. The advent of suspension printing has enabled the precise printing of some soft biomaterials (e.g., collagen and fibrinogen), which were previously considered unprintable singly with cells. In addition, the introduction of sacrificial biomaterials can improve the porosity of biomaterials, making the printed structures more favorable for cell proliferation, migration and connection. In this review, we mainly consider the latest developments and applications of 3D bioprinting based on the strategy of sacrificial biomaterials, discuss the basic principles of sacrificial templates, and look forward to the broad prospects of this approach for complex organ engineering or manufacturing.
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Affiliation(s)
- Siyu Liu
- Center of 3D Printing & Organ Manufacturing, School of Intelligent Medicine, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China; (S.L.); (T.W.); (S.L.)
| | - Tianlin Wang
- Center of 3D Printing & Organ Manufacturing, School of Intelligent Medicine, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China; (S.L.); (T.W.); (S.L.)
| | - Shenglong Li
- Center of 3D Printing & Organ Manufacturing, School of Intelligent Medicine, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China; (S.L.); (T.W.); (S.L.)
| | - Xiaohong Wang
- Center of 3D Printing & Organ Manufacturing, School of Intelligent Medicine, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China; (S.L.); (T.W.); (S.L.)
- Center of Organ Manufacturing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
- Correspondence: or ; Tel./Fax: +86-24-31900983
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15
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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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16
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Biomaterials Used for Periodontal Disease Treatment: Focusing on Immunomodulatory Properties. Int J Biomater 2022; 2022:7693793. [PMID: 35528847 PMCID: PMC9072036 DOI: 10.1155/2022/7693793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/23/2022] [Accepted: 03/05/2022] [Indexed: 12/25/2022] Open
Abstract
The growing use of biomaterials with different therapeutic purposes increases the need for their physiological understanding as well as to seek its integration with the human body. Chronic inflammatory local pathologies, generally associated with infectious or autoimmunity processes, have been a current therapeutic target due to the difficulty in their treatment. The recent development of biomaterials with immunomodulatory capacity would then become one of the possible strategies for their management in local pathologies, by intervening in situ, without generating alterations in the systemic immune response. The treatment of periodontal disease as an inflammatory entity has involved the use of different approaches and biomaterials. There is no conclusive, high evidence about the use of these biomaterials in the regeneration of periodontitis sequelae, so the profession keeps looking for other different strategies. The use of biomaterials with immunomodulatory properties could be one, with a promising future. This review of the literature summarizes the scientific evidence about biomaterials used in the treatment of periodontal disease.
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17
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Ouyang L, Wojciechowski JP, Tang J, Guo Y, Stevens MM. Tunable Microgel-Templated Porogel (MTP) Bioink for 3D Bioprinting Applications. Adv Healthc Mater 2022; 11:e2200027. [PMID: 35037731 PMCID: PMC7615490 DOI: 10.1002/adhm.202200027] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Indexed: 11/08/2022]
Abstract
Micropores are essential for tissue engineering to ensure adequate mass transportation for embedded cells. Despite the considerable progress made by advanced 3D bioprinting technologies, it remains challenging to engineer micropores of 100 µm or smaller in cell-laden constructs. Here, a microgel-templated porogel (MTP) bioink platform is reported to introduce controlled microporosity in 3D bioprinted hydrogels in the presence of living cells. Templated gelatin microgels are fabricated with varied sizes (≈10, ≈45, and ≈100 µm) and mixed with photo-crosslinkable formulations to make composite MTP bioinks. The addition of microgels significantly enhances the shear-thinning and self-healing viscoelastic properties and thus the printability of bioinks with cell densities up to 1 × 108 mL-1 in matrix. Consistent printability is achieved for a series of MTP bioinks based on different component ratios and matrix materials. After photo-crosslinking the matrix phase, the templated microgels dissociated and diffused under physiological conditions, resulting in corresponding micropores in situ. When embedding osteoblast-like cells in the matrix phase, the MTP bioinks support higher metabolic activity and more uniform mineral formation than bulk gel controls. The approach provides a facile strategy to engineer precise micropores in 3D printed structures to compensate for the limited resolution of current bioprinting approaches.
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Affiliation(s)
- Liliang Ouyang
- Department of Materials Department of Bioengineering Institute of Biomedical Engineering Imperial College London London SW7 2AZ, UK; Department of Mechanical Engineering Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing “Biomanufacturing and Engineering Living Systems” Innovation International Talents Base (111 Base) Tsinghua University Beijing 100084, China
| | - Jonathan P. Wojciechowski
- Department of Materials Department of Bioengineering Institute of Biomedical Engineering Imperial College London London SW7 2AZ, UK
| | - Jiaqing Tang
- Department of Materials Department of Bioengineering Institute of Biomedical Engineering Imperial College London London SW7 2AZ, UK
| | - Yuzhi Guo
- Department of Mechanical Engineering Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing “Biomanufacturing and Engineering Living Systems” Innovation International Talents Base (111 Base) Tsinghua University Beijing 100084, China
| | - Molly M. Stevens
- Department of Materials Department of Bioengineering Institute of Biomedical Engineering Imperial College London London SW7 2AZ, UK
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18
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Unruh RM, Bornhoeft LR, Nichols SP, Wisniewski NA, McShane MJ. Inorganic-Organic Interpenetrating Network Hydrogels as Tissue-Integrating Luminescent Implants: Physicochemical Characterization and Preclinical Evaluation. Macromol Biosci 2022; 22:e2100380. [PMID: 34847287 PMCID: PMC8930476 DOI: 10.1002/mabi.202100380] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/23/2021] [Indexed: 11/07/2022]
Abstract
Sensors capable of accurate, continuous monitoring of biochemistry are crucial to the realization of personalized medicine on a large scale. Great strides have been made to enhance tissue compatibility of long-term in vivo biosensors using biomaterials strategies such as tissue-integrating hydrogels. However, the low level of oxygen in tissue presents a challenge for implanted devices, especially when the biosensing function relies on oxygen as a measure-either as a primary analyte or as an indirect marker to transduce levels of other biomolecules. This work presents a method of fabricating inorganic-organic interpenetrating network (IPN) hydrogels to optimize the oxygen transport through injectable biosensors. Capitalizing on the synergy between the two networks, various physicochemical properties (e.g., swelling, glass transition temperature, and mechanical properties) are shown to be independently adjustable while maintaining a 250% increase in oxygen permeability relative to poly(2-hydroxyethyl methacrylate) controls. Finally, these gels, when functionalized with a Pd(II) benzoporphyrin phosphor, track tissue oxygen in real time for 76 days as subcutaneous implants in a porcine model while promoting tissue ingrowth and minimizing fibrosis around the implant. These findings support IPN networks for fine-tuned design of implantable biomaterials in personalized medicine and other biomedical applications.
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Affiliation(s)
- Rachel M. Unruh
- 5045 Emerging Technologies Building, 3120 TAMU, College Station, TX 77843, USA
| | | | | | | | - Michael J. McShane
- 5045 Emerging Technologies Building, 3120 TAMU, College Station, TX 77843, USA
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19
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Gu Y, Forget A, Shastri VP. Biobridge: An Outlook on Translational Bioinks for 3D Bioprinting. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103469. [PMID: 34862764 PMCID: PMC8787414 DOI: 10.1002/advs.202103469] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/20/2021] [Indexed: 05/30/2023]
Abstract
3D-bioprinting (3DBP) possesses several elements necessary to overcome the deficiencies of conventional tissue engineering, such as defining tissue shape a priori, and serves as a bridge to clinical translation. This transformative potential of 3DBP hinges on the development of the next generation of bioinks that possess attributes for clinical use. Toward this end, in addition to physicochemical characteristics essential for printing, bioinks need to possess proregenerative attributes, while enabling printing of stable structures with a defined biological function that survives implantation and evolves in vivo into functional tissue. With a focus on bioinks for extrusion-based bioprinting, this perspective review advocates a rigorous biology-based approach to engineering bioinks, emphasizing efficiency, reproducibility, and a streamlined translation process that places the clinical endpoint front and center. A blueprint for engineering the next generation of bioinks that satisfy the aforementioned performance criteria for various translational levels (TRL1-5) and a characterization tool kit is presented.
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Affiliation(s)
- Yawei Gu
- Institute for Macromolecular ChemistryUniversity of FreiburgFreiburg79104Germany
| | - Aurelien Forget
- Institute for Macromolecular ChemistryUniversity of FreiburgFreiburg79104Germany
| | - V. Prasad Shastri
- Institute for Macromolecular ChemistryUniversity of FreiburgFreiburg79104Germany
- Bioss‐Centre for Biological Signalling StudiesUniversity of FreiburgBreisgau79104Germany
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20
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Goswami R, Arya RK, Sharma S, Dutta B, Stamov DR, Zhu X, Rahaman SO. Mechanosensing by TRPV4 mediates stiffness-induced foreign body response and giant cell formation. Sci Signal 2021; 14:eabd4077. [PMID: 34726952 PMCID: PMC9976933 DOI: 10.1126/scisignal.abd4077] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Implantation of biomaterials or devices into soft tissue often leads to the development of the foreign body response (FBR), an inflammatory condition that can cause implant failure, tissue injury, and death of the patient. Macrophages accumulate and fuse to generate destructive foreign body giant cells (FBGCs) at the tissue-implant interface, leading to the development of fibrous scar tissue around the implant that is generated by myofibroblasts. We previously showed that the FBR in vivo and FBGC formation in vitro require transient receptor potential vanilloid 4 (TRPV4), a mechanosensitive ion channel. Here, we report that TRPV4 was required specifically for the FBR induced by implant stiffness independently of biochemical cues and for intracellular stiffening that promotes FBGC formation in vitro. TRPV4 deficiency reduced collagen deposition and the accumulation of macrophages, FBGCs, and myofibroblasts at stiff, but not soft, implants in vivo and inhibited macrophage-induced differentiation of wild-type fibroblasts into myofibroblasts in vitro. Atomic force microscopy demonstrated that TRPV4 was required for implant-adjacent tissue stiffening in vivo and for cytoskeletal remodeling and intracellular stiffening induced by fusogenic cytokines in vitro. Together, these data suggest a mechanism whereby a reciprocal functional interaction between TRPV4 and substrate stiffness leads to cytoskeletal remodeling and cellular force generation to promote FBGC formation during the FBR.
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Affiliation(s)
- Rishov Goswami
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Rakesh K. Arya
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Shweta Sharma
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Bidisha Dutta
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA
| | - Dimitar R. Stamov
- JPK BioAFM Business, Nano Surfaces Division, Bruker Nano GmbH, Am Studio 2D, 12489 Berlin, Germany
| | - Xiaoping Zhu
- Department of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA
| | - Shaik O. Rahaman
- Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.,Corresponding author.:
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21
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Lužajić Božinovski T, Todorović V, Milošević I, Prokić BB, Gajdov V, Nešović K, Mišković-Stanković V, Marković D. Macrophages, the main marker in biocompatibility evaluation of new hydrogels after subcutaneous implantation in rats. J Biomater Appl 2021; 36:1111-1125. [PMID: 34607494 DOI: 10.1177/08853282211046119] [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: 11/17/2022]
Abstract
Biocompatibility of materials is one of the most important conditions for their successful application in tissue regeneration and repair. Cell-surface interactions stimulate adhesion and activation of macrophages whose acquaintance can assist in designing novel biomaterials that promote favorable macrophage-biomaterial surface interactions for clinical application. This study is designed to determine the distribution and number of macrophages as a means of biocompatibility evaluation of two newly synthesized materials [silver/poly(vinyl alcohol) (Ag/PVA) and silver/poly(vinyl alcohol)/graphene (Ag/PVA/Gr) nanocomposite hydrogels] in vivo, with approval of the Ethics Committee of the Faculty of Veterinary Medicine, University of Belgrade. Macrophages and giant cells were analyzed in tissue sections stained by routine H&E and immunohistochemical methods (CD68+). Statistical relevance was determined in the statistical software package SPSS 20 (IBM corp). The results of the study in terms of the number of giant cells localized around the implant showed that their number was highest on the seventh postoperative day (p.o.d.) in the group implanted with Ag/PVA hydrogels, and on the 30th p.o.d. in the group implanted with Ag/PVA/Gr. Interestingly, the number of macrophages measured in the capsular and pericapsular space was highest in the group implanted with the commercial Suprasorb© material. The increased macrophage number, registered around the Ag/PVA/Gr implant on 60th p.o.d. indicates that the addition of graphene can, in a specific way, modulate different biological responses of tissues in the process of wound healing, regeneration, and integration.
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Affiliation(s)
- Tijana Lužajić Božinovski
- Department of Histology and Embryology, 229736University of Belgrade Faculty of Veterinary Medicine, Belgrade, Serbia
| | - Vera Todorović
- Department of Histology and Embryology, School of Medicine of University of Zenica, Zenica, Bosnia and Herzegovina
| | - Ivan Milošević
- Department of Histology and Embryology, 229736University of Belgrade Faculty of Veterinary Medicine, Belgrade, Serbia
| | - Bogomir Bolka Prokić
- Department of Surgery, Orthopedy and Ophthalmology, Faculty of Veterinary Medicine, Belgrade, Serbia
| | - Vladimir Gajdov
- Department of Histology and Embryology, 229736University of Belgrade Faculty of Veterinary Medicine, Belgrade, Serbia
| | - Katarina Nešović
- Department of Physical Chemistry and Electrochemistry, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Vesna Mišković-Stanković
- Department of Physical Chemistry and Electrochemistry, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Danica Marković
- Department of Histology and Embryology, 229736University of Belgrade Faculty of Veterinary Medicine, Belgrade, Serbia
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22
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Vakil A, Petryk NM, Shepherd E, Beaman HT, Ganesh PS, Dong KS, Monroe MBB. Shape Memory Polymer Foams with Tunable Degradation Profiles. ACS APPLIED BIO MATERIALS 2021; 4:6769-6779. [PMID: 34568773 PMCID: PMC8456454 DOI: 10.1021/acsabm.1c00516] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/03/2021] [Indexed: 11/29/2022]
Abstract
Uncontrolled hemorrhage is the leading cause of preventable death on the battlefield and results in ∼1.5 million deaths each year. The primary current treatment options are gauze and/or tourniquets, which are ineffective for up to 80% of wounds. Additionally, most hemostatic materials must be removed from the patient within <12 h, which limits their applicability in remote scenarios and can cause additional bleeding upon removal. Here, degradable shape memory polymer (SMP) foams were synthesized to overcome these limitations. SMP foams were modified with oxidatively labile ether groups and hydrolytically labile ester groups to degrade after implantation. Foam physical, thermal, and shape memory properties were assessed along with cytocompatibility and blood interactions. Degradation profiles were obtained in vitro in oxidative and hydrolytic media (3% H2O2 (oxidation) and 0.1 M NaOH (hydrolysis) at 37 °C). The resulting foams had tunable, clinically relevant degradation rates, with complete mass loss within 30-60 days. These SMP foams have potential to provide an easy-to-use, shape-filling hemostatic dressing that can be left in place during traumatic wound healing with future potential use in regenerative medicine applications.
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Affiliation(s)
- Anand
Utpal Vakil
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Natalie Marie Petryk
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Ellen Shepherd
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Henry T. Beaman
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Priya S. Ganesh
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Katheryn S. Dong
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Mary Beth B. Monroe
- Department of Biomedical
and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired
Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
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23
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Cytotoxic and Genotoxic Effects of Composite Resins on Cultured Human Gingival Fibroblasts. MATERIALS 2021; 14:ma14185225. [PMID: 34576450 PMCID: PMC8468467 DOI: 10.3390/ma14185225] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/02/2021] [Accepted: 09/08/2021] [Indexed: 01/18/2023]
Abstract
The aim of the study was to evaluate the cytotoxic and genotoxic potential of five commercially available dental composite resins (CRs), investigating the effect of their quantifiable bisphenol-A-glycidyl-methacrylate (Bis-GMA) and/or triethylene glycol dimethacrylate (TEGDMA) release. Experiments were performed using the method of soaking extracts, which were derived from the immersion of the following CRs in the culture medium: Clearfil-Majesty-ES-2, GrandioSO, and Enamel-plus-HRi (Bis-GMA-based); Enamel-BioFunction and VenusDiamond (Bis-GMA-free). Human Gingival Fibroblasts (hGDFs) were employed as the cellular model to mimic in vitro the oral cavity milieu, where CRs simultaneously release various components. Cell metabolic activity, oxidative stress, and genotoxicity were used as cellular outcomes. Results showed that only VenusDiamond and Enamel-plus-HRi significantly affected the hGDF cell metabolic activity. In accordance with this, although no CR-derived extract induced a significantly detectable oxidative stress, only VenusDiamond and Enamel-plus-HRi induced significant genotoxicity. Our findings showed, for the CRs employed, a cytotoxic and genotoxic potential that did not seem to depend only on the actual Bis-GMA or TEGDMA content. Enamel-BioFunction appeared optimal in terms of cytotoxicity, and similar findings were observed for Clearfil-Majesty-ES-2 despite their different Bis-GMA/TEGDMA release patterns. This suggested that simply excluding one specific monomer from the CR formulation might not steadily turn out as a successful approach for improving their biocompatibility.
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24
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Seymour AJ, Shin S, Heilshorn SC. 3D Printing of Microgel Scaffolds with Tunable Void Fraction to Promote Cell Infiltration. Adv Healthc Mater 2021; 10:e2100644. [PMID: 34342179 PMCID: PMC8612872 DOI: 10.1002/adhm.202100644] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/23/2021] [Indexed: 12/18/2022]
Abstract
Granular, microgel-based materials have garnered interest as promising tissue engineering scaffolds due to their inherent porosity, which can promote cell infiltration. Adapting these materials for 3D bioprinting, while maintaining sufficient void space to enable cell migration, can be challenging, since the rheological properties that determine printability are strongly influenced by microgel packing and void fraction. In this work, a strategy is proposed to decouple printability and void fraction by blending UV-crosslinkable gelatin methacryloyl (GelMA) microgels with sacrificial gelatin microgels to form composite inks. It is observed that inks with an apparent viscosity greater than ≈100 Pa s (corresponding to microgel concentrations ≥5 wt%) have rheological properties that enable extrusion-based printing of multilayered structures in air. By altering the ratio of GelMA to sacrificial gelatin microgels, while holding total concentration constant at 6 wt%, a family of GelMA:gelatin microgel inks is created that allows for tuning of void fraction from 0.20 to 0.57. Furthermore, human umbilical vein endothelial cells (HUVEC) seeded onto printed constructs are observed to migrate into granular inks in a void fraction-dependent manner. Thus, the family of microgel inks holds promise for use in 3D printing and tissue engineering applications that rely upon cell infiltration.
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Affiliation(s)
- Alexis J Seymour
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Sungchul Shin
- Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Sarah C Heilshorn
- Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA
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25
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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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Pruett LJ, Jenkins CH, Singh NS, Catallo KJ, Griffin DR. Heparin Microislands in Microporous Annealed Particle Scaffolds for Accelerated Diabetic Wound Healing. ADVANCED FUNCTIONAL MATERIALS 2021; 31. [PMID: 34539306 PMCID: PMC8447473 DOI: 10.1002/adfm.202104337] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Affiliation(s)
- Lauren J. Pruett
- Department of Biomedical Engineering University of Virginia 415 Lane Rd Charlottesville VA 22908 USA
| | - Christian H. Jenkins
- Department of Biomedical Engineering University of Virginia 415 Lane Rd Charlottesville VA 22908 USA
| | - Neharika S. Singh
- Department of Biomedical Engineering University of Virginia 415 Lane Rd Charlottesville VA 22908 USA
| | - Katarina J. Catallo
- Department of Biomedical Engineering University of Virginia 415 Lane Rd Charlottesville VA 22908 USA
| | - Donald R. Griffin
- Department of Biomedical Engineering University of Virginia 415 Lane Rd Charlottesville VA 22908 USA
- Department of Chemical Engineering University of Virginia 102 Engineer's Way Charlottesville VA 22904 USA
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Bufton J, Jung S, Evans JC, Bao Z, Aguiar D, Allen C. Cross-linked valerolactone copolymer implants with tailorable biodegradation, loading and in vitro release of paclitaxel. Eur J Pharm Sci 2021; 162:105808. [DOI: 10.1016/j.ejps.2021.105808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/18/2021] [Accepted: 03/11/2021] [Indexed: 12/20/2022]
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John JV, McCarthy A, Wang H, Luo Z, Li H, Wang Z, Cheng F, Zhang YS, Xie J. Freeze-Casting with 3D-Printed Templates Creates Anisotropic Microchannels and Patterned Macrochannels within Biomimetic Nanofiber Aerogels for Rapid Cellular Infiltration. Adv Healthc Mater 2021; 10:e2100238. [PMID: 34029004 PMCID: PMC8222158 DOI: 10.1002/adhm.202100238] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/07/2021] [Indexed: 01/08/2023]
Abstract
A new approach is described for fabricating 3D poly(ε-caprolactone) (PCL)/gelatin (1:1) nanofiber aerogels with patterned macrochannels and anisotropic microchannels by freeze-casting with 3D-printed sacrificial templates. Single layer or multiple layers of macrochannels are formed through an inverse replica of 3D-printed templates. Aligned microchannels formed by partially anisotropic freezing act as interconnected pores between templated macrochannels. The resulting macro-/microchannels within nanofiber aerogels significantly increase preosteoblast infiltration in vitro. The conjugation of vascular endothelial growth factor (VEGF)-mimicking QK peptide to PCL/gelatin/gelatin methacryloyl (1:0.5:0.5) nanofiber aerogels with patterned macrochannels promotes the formation of a microvascular network of seeded human microvascular endothelial cells. Moreover, nanofiber aerogels with patterned macrochannels and anisotropic microchannels show significantly enhanced cellular infiltration rates and host tissue integration compared to aerogels without macrochannels following subcutaneous implantation in rats. Taken together, this novel class of nanofiber aerogels holds great potential in biomedical applications including tissue repair and regeneration, wound healing, and 3D tissue/disease modeling.
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Affiliation(s)
- Johnson V. John
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Alec McCarthy
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Hongjun Wang
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Zeyu Luo
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Hongbin Li
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Zixuan Wang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Feng Cheng
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska Lincoln, Lincoln, NE 68588, 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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Rogers HB, Zhou LT, Kusuhara A, Zaniker E, Shafaie S, Owen BC, Duncan FE, Woodruff TK. Dental resins used in 3D printing technologies release ovo-toxic leachates. CHEMOSPHERE 2021; 270:129003. [PMID: 33515896 PMCID: PMC7957323 DOI: 10.1016/j.chemosphere.2020.129003] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/31/2020] [Accepted: 11/15/2020] [Indexed: 06/02/2023]
Abstract
We recently engineered the first female reproductive tract on a chip (EVATAR), to enable sex-based ex vivo research. To increase the scalability and accessibility of EVATAR, we turned to 3D printing (3DP) technologies, selecting two biocompatible 3DP resins, Dental SG (DSG) and Dental LT (DLT) to generate 3DP microphysiologic platforms. Due to the known sensitivity of reproductive cells to leachable compounds, we first screened for toxicity of these biomaterials using an in vitro mammalian oocyte maturation assay. Culture of mouse oocytes in 3DP plates using conventionally treated DSG resin resulted in rapid oocyte degeneration. Oxygen plasma treatment of the surface of printed DSG resin prevented this degeneration, and the majority of the resulting oocytes progressed through meiosis in vitro. However, 57.0% ± 37.2% of the cells cultured in the DSG resin plates exhibited abnormal chromosome morphology compared to 19.4% ± 17.3% of controls cultured in polystyrene. All tested DLT resin conditions, including plasma treatment, resulted in complete and rapid oocyte degeneration. To identify the ovo-toxic component of DLT, we analyzed DLT leachate using mass spectroscopy. We identified Tinuvin 292, a commercial light stabilizer, as a major component of the DLT leachate, which resulted in a dose-dependent disruption of meiotic progression and increase in chromosomal abnormalities with oocyte exposure, showing significant ovo-toxicity in mammals. Severe reproductive toxicity induced by in vitro exposure to these 3D-printed resins highlights potential risks of deploying insufficiently characterized materials for biomedical applications and underscores the need for more rigorous evaluation and designation of biocompatible materials.
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Affiliation(s)
- Hunter B Rogers
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Luhan T Zhou
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Atsuko Kusuhara
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Emily Zaniker
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Saman Shafaie
- Integrated Molecular Structure Education and Research Center (IMSERC), Northwestern University, Evanston, IL, 60208, USA
| | - Benjamin C Owen
- Integrated Molecular Structure Education and Research Center (IMSERC), Northwestern University, Evanston, IL, 60208, USA
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA.
| | - Teresa K Woodruff
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA.
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Cunha FB, Pomini KT, Plepis AMDG, Martins VDCA, Machado EG, de Moraes R, Munhoz MDAES, Machado MVR, Duarte MAH, Alcalde MP, Buchaim DV, Buchaim RL, Fernandes VAR, Pereira EDSBM, Pelegrine AA, da Cunha MR. In Vivo Biological Behavior of Polymer Scaffolds of Natural Origin in the Bone Repair Process. Molecules 2021; 26:molecules26061598. [PMID: 33805847 PMCID: PMC8002007 DOI: 10.3390/molecules26061598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 03/09/2021] [Indexed: 12/15/2022] Open
Abstract
Autologous bone grafts, used mainly in extensive bone loss, are considered the gold standard treatment in regenerative medicine, but still have limitations mainly in relation to the amount of bone available, donor area, morbidity and creation of additional surgical area. This fact encourages tissue engineering in relation to the need to develop new biomaterials, from sources other than the individual himself. Therefore, the present study aimed to investigate the effects of an elastin and collagen matrix on the bone repair process in critical size defects in rat calvaria. The animals (Wistar rats, n = 30) were submitted to a surgical procedure to create the bone defect and were divided into three groups: Control Group (CG, n = 10), defects filled with blood clot; E24/37 Group (E24/37, n = 10), defects filled with bovine elastin matrix hydrolyzed for 24 h at 37 °C and C24/25 Group (C24/25, n = 10), defects filled with porcine collagen matrix hydrolyzed for 24 h at 25 °C. Macroscopic and radiographic analyses demonstrated the absence of inflammatory signs and infection. Microtomographical 2D and 3D images showed centripetal bone growth and restricted margins of the bone defect. Histologically, the images confirmed the pattern of bone deposition at the margins of the remaining bone and without complete closure by bone tissue. In the morphometric analysis, the groups E24/37 and C24/25 (13.68 ± 1.44; 53.20 ± 4.47, respectively) showed statistically significant differences in relation to the CG (5.86 ± 2.87). It was concluded that the matrices used as scaffolds are biocompatible and increase the formation of new bone in a critical size defect, with greater formation in the polymer derived from the intestinal serous layer of porcine origin (C24/25).
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Affiliation(s)
- Fernando Bento Cunha
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Karina Torres Pomini
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, SP, Brazil;
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Marília 17525-902, SP, Brazil;
| | - Ana Maria de Guzzi Plepis
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
- São Carlos Institute of Chemistry, University of São Paulo, USP, São Carlos 13566-590, SP, Brazil;
| | | | - Eduardo Gomes Machado
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Renato de Moraes
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Marcelo de Azevedo e Souza Munhoz
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Michela Vanessa Ribeiro Machado
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
| | - Marco Antonio Hungaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, SP, Brazil;
| | - Murilo Priori Alcalde
- Department of Health Science, Unisagrado University Center, Bauru 17011-160, SP, Brazil;
| | - Daniela Vieira Buchaim
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Marília 17525-902, SP, Brazil;
- Medical School, University Center of Adamantina (UniFAI), Adamantina 17800-000, SP, Brazil
| | - Rogério Leone Buchaim
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, SP, Brazil;
- Correspondence: ; Tel.: +55-1432358220
| | - Victor Augusto Ramos Fernandes
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Laboratory of Anatomy, University Center Our Lady of Patronage (CEUNSP), University of South Cruise, Itu 13300-200, SP, Brazil
| | | | - André Antonio Pelegrine
- Research Institute, Postgraduate Program, São Leopoldo Mandic, School of Dentistry, Campinas 13045-755, SP, Brazil;
| | - Marcelo Rodrigues da Cunha
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
- Laboratory of Anatomy, University Center Our Lady of Patronage (CEUNSP), University of South Cruise, Itu 13300-200, SP, Brazil
- Research Institute, Postgraduate Program, São Leopoldo Mandic, School of Dentistry, Campinas 13045-755, SP, Brazil;
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Animal models in bicompatibility assessments of implants in soft and hard tissues. VETERINARSKI GLASNIK 2021. [DOI: 10.2298/vetgl210322005p] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The ethical dilemmas of using animals as in vivo models in preclinical and
clinical examinations have been increasingly present in recent decades.
Small laboratory animals (rats, rabbits) will continue to be used because
they are cost-effective and permit the formation of statistically testable
cohort groups; a task that, for financial, maintenance and care reasons, is
almost prohibitive for larger animals. Technological advances in the
production of new biomaterials for clinical use are enormous, but screening
tests and methods used to assess biocompatibility lag behind these advances.
The assessment of biological responses is slow and based on millennial
recovery mechanisms in eukaryotic organisms. Therefore, the goal of
researchers in this field is to re-evaluate old methods of biocompatibility
assessment and introduce new methods of evaluation, especially for in vivo
testing. In that sense, a revision of the ISO standards was planned and
conducted in 2017, which insisted on cytotoxicity testing in cell lines and
produced concrete proposals on how biocompatibility should be quantified. In
vivo biocompatibility evaluation of biomaterials used for soft tissue
recovery commonly utilises rats. Rabbits are recommended for implants used
for hard tissues, because of the rabbit?s size, the possibility of
implanting the biomaterials on a larger bone surface, and because of the
peculiarities of rabbit bone tissue that favours rapid recovery after bone
defects and enables easy reading of the results.
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Arya RK, Goswami R, Rahaman SO. Mechanotransduction via a TRPV4-Rac1 signaling axis plays a role in multinucleated giant cell formation. J Biol Chem 2021; 296:100129. [PMID: 33262217 PMCID: PMC7948992 DOI: 10.1074/jbc.ra120.014597] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 11/13/2020] [Accepted: 12/01/2020] [Indexed: 12/21/2022] Open
Abstract
Multinucleated giant cells are formed by the fusion of macrophages and are a characteristic feature in numerous pathophysiological conditions including the foreign body response (FBR). Foreign body giant cells (FBGCs) are inflammatory and destructive multinucleated macrophages and may cause damage and/or rejection of implants. However, while these features of FBGCs are well established, the molecular mechanisms underlying their formation remain elusive. Improved understanding of the molecular mechanisms underlying the formation of FBGCs may permit the development of novel implants that eliminate or reduce the FBR. Our previous study showed that transient receptor potential vanilloid 4 (TRPV4), a mechanosensitive ion channel/receptor, is required for FBGC formation and FBR to biomaterials. Here, we have determined that (a) TRPV4 is directly involved in fusogenic cytokine (interleukin-4 plus granulocyte macrophage-colony stimulating factor)-induced activation of Rac1, in bone marrow-derived macrophages; (b) TRPV4 directly interacts with Rac1, and their interaction is further augmented in the presence of fusogenic cytokines; (c) TRPV4-dependent activation of Rac1 is essential for the augmentation of intracellular stiffness and regulation of cytoskeletal remodeling; and (d) TRPV4-Rac1 signaling axis is critical in fusogenic cytokine-induced FBGC formation. Together, these data suggest a novel mechanism whereby a functional interaction between TRPV4 and Rac1 leads to cytoskeletal remodeling and intracellular stiffness generation to modulate FBGC formation.
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Affiliation(s)
- Rakesh K Arya
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA
| | - Rishov Goswami
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA
| | - Shaik O Rahaman
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA.
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34
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Vigneswari S, Gurusamy TP, Abdul Khalil HPS, Ramakrishna S, Amirul AAA. Elucidation of Antimicrobial Silver Sulfadiazine (SSD) Blend/Poly(3-Hydroxybutyrate- co-4-Hydroxybutyrate) Immobilised with Collagen Peptide as Potential Biomaterial. Polymers (Basel) 2020; 12:polym12122979. [PMID: 33327456 PMCID: PMC7764998 DOI: 10.3390/polym12122979] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/06/2020] [Accepted: 12/10/2020] [Indexed: 01/04/2023] Open
Abstract
The quest for a suitable biomaterial for medical application and tissue regeneration has resulted in the extensive research of surface functionalization of material. Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] is a bacterial polymer well-known for its high levels of biocompatibility, non-genotoxicity, and minimal tissue response. We have designed a porous antimicrobial silver SSD blend/poly(3HB-co-4HB)-collagen peptide scaffold using a combination of simple techniques to develop a scaffold with an inter-connected microporous pore in this study. The collagen peptide was immobilised via -NH2 group via aminolysis. In order to improve the antimicrobial performance of the scaffold, silver sulfadiazine (SSD) was impregnated in the scaffolds. To confirm the immobilised collagen peptide and SSD, the scaffold was characterized using FTIR. Herein, based on the cell proliferation assay of the L929 fibroblast cells, enhanced bioactivity of the scaffold with improved wettability facilitated increased cell proliferation. The antimicrobial activity of the SSD blend/P(3HB-co-4HB)-collagen peptide in reference to the pathogenic Gram-negative, Gram-positive bacteria and yeast Candida albicans exhibited SSD blend/poly(3HB-co-4HB)-12.5 wt% collagen peptide as significant construct of biocompatible antibacterial biomaterials. Thus, SSD blend/P(3HB-co-4HB)-collagen peptide scaffold from this finding has high potential to be further developed as biomaterial.
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Affiliation(s)
- Sevakumaran Vigneswari
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus 21030, Terengganu, Malaysia;
| | | | | | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117581, Singapore;
| | - Al-Ashraf Abdullah Amirul
- School of Biological Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia;
- Centre for Chemical Biology, Universiti Sains Malaysia, Bayan Lepas, Penang 11900, Malaysia
- Malaysian Institute of Pharmaceuticals and Nutraceuticals, NIBM, Penang 11700, Malaysia
- Correspondence:
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Jain N, Moeller J, Vogel V. Mechanobiology of Macrophages: How Physical Factors Coregulate Macrophage Plasticity and Phagocytosis. Annu Rev Biomed Eng 2020; 21:267-297. [PMID: 31167103 DOI: 10.1146/annurev-bioeng-062117-121224] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In addition to their early-recognized functions in host defense and the clearance of apoptotic cell debris, macrophages play vital roles in tissue development, homeostasis, and repair. If misregulated, they steer the progression of many inflammatory diseases. Much progress has been made in understanding the mechanisms underlying macrophage signaling, transcriptomics, and proteomics, under physiological and pathological conditions. Yet, the detailed mechanisms that tune circulating monocytes/macrophages and tissue-resident macrophage polarization, differentiation, specification, and their functional plasticity remain elusive. We review how physical factors affect macrophage phenotype and function, including how they hunt for particles and pathogens, as well as the implications for phagocytosis, autophagy, and polarization from proinflammatory to prohealing phenotype. We further discuss how this knowledge can be harnessed in regenerative medicine and for the design of new drugs and immune-modulatory drug delivery systems, biomaterials, and tissue scaffolds.
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Affiliation(s)
- Nikhil Jain
- Laboratory of Applied Mechanobiology, Institute of Translational Medicine, and Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zurich, Switzerland;
| | - Jens Moeller
- Laboratory of Applied Mechanobiology, Institute of Translational Medicine, and Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zurich, Switzerland;
| | - Viola Vogel
- Laboratory of Applied Mechanobiology, Institute of Translational Medicine, and Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zurich, Switzerland;
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36
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Lutzweiler G, Ndreu Halili A, Engin Vrana N. The Overview of Porous, Bioactive Scaffolds as Instructive Biomaterials for Tissue Regeneration and Their Clinical Translation. Pharmaceutics 2020; 12:E602. [PMID: 32610440 PMCID: PMC7407612 DOI: 10.3390/pharmaceutics12070602] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/08/2020] [Accepted: 06/23/2020] [Indexed: 12/20/2022] Open
Abstract
Porous scaffolds have been employed for decades in the biomedical field where researchers have been seeking to produce an environment which could approach one of the extracellular matrixes supporting cells in natural tissues. Such three-dimensional systems offer many degrees of freedom to modulate cell activity, ranging from the chemistry of the structure and the architectural properties such as the porosity, the pore, and interconnection size. All these features can be exploited synergistically to tailor the cell-material interactions, and further, the tissue growth within the voids of the scaffold. Herein, an overview of the materials employed to generate porous scaffolds as well as the various techniques that are used to process them is supplied. Furthermore, scaffold parameters which modulate cell behavior are identified under distinct aspects: the architecture of inert scaffolds (i.e., pore and interconnection size, porosity, mechanical properties, etc.) alone on cell functions followed by comparison with bioactive scaffolds to grasp the most relevant features driving tissue regeneration. Finally, in vivo outcomes are highlighted comparing the accordance between in vitro and in vivo results in order to tackle the future translational challenges in tissue repair and regeneration.
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Affiliation(s)
- Gaëtan Lutzweiler
- Institut National de la Santé et de la Recherche Medicale, UMR_S 1121, 11 rue Humann, 67085 Strasbourg CEDEX, France
| | - Albana Ndreu Halili
- Department of Information Technology, Aleksander Moisiu University, 2001 Durres, Albania;
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Diloksumpan P, Bolaños RV, Cokelaere S, Pouran B, de Grauw J, van Rijen M, van Weeren R, Levato R, Malda J. Orthotopic Bone Regeneration within 3D Printed Bioceramic Scaffolds with Region-Dependent Porosity Gradients in an Equine Model. Adv Healthc Mater 2020; 9:e1901807. [PMID: 32324336 PMCID: PMC7116206 DOI: 10.1002/adhm.201901807] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/03/2020] [Indexed: 01/07/2023]
Abstract
The clinical translation of three-dimensionally printed bioceramic scaffolds with tailored architectures holds great promise toward the regeneration of bone to heal critical-size defects. Herein, the long-term in vivo performance of printed hydrogel-ceramic composites made of methacrylated-oligocaprolactone-poloxamer and low-temperature self-setting calcium-phosphates is assessed in a large animal model. Scaffolds printed with different internal architectures, displaying either a designed porosity gradient or a constant pore distribution, are implanted in equine tuber coxae critical size defects. Bone ingrowth is challenged and facilitated only from one direction via encasing the bioceramic in a polycaprolactone shell. After 7 months, total new bone volume and scaffold degradation are significantly greater in structures with constant porosity. Interestingly, gradient scaffolds show lower extent of remodeling and regeneration even in areas having the same porosity as the constant scaffolds. Low regeneration in distal regions from the interface with native bone impairs ossification in proximal regions of the construct, suggesting that anisotropic architectures modulate the cross-talk between distant cells within critical-size defects. The study provides key information on how engineered architectural patterns impact osteoregeneration in vivo, and also indicates the equine tuber coxae as promising orthotopic model for studying materials stimulating bone formation.
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Affiliation(s)
- Paweena Diloksumpan
- Department of Clinical Sciences, Faculty of Veterinary Medicine,
Utrecht University, Yalelaan 1, Utrecht 3584 CL, The Netherlands
| | - Rafael Vindas Bolaños
- Escuela de Medicina Veterinaria, Universidad Nacional Costa Rica
Barreal de Heredia Heredia, Lagunilla 86-3000, Costa Rica
| | - Stefan Cokelaere
- Department of Clinical Sciences, Faculty of Veterinary Medicine,
Utrecht University, Yalelaan 1, Utrecht 3584 CL, The Netherlands
| | - Behdad Pouran
- Department of Orthopaedics and Regenerative Medicine Center,
University Medical Center Utrecht, Utrecht University, Heidelberglaan 100,
Utrecht 3584 CX, The Netherlands
| | - Janny de Grauw
- Department of Clinical Sciences, Faculty of Veterinary Medicine,
Utrecht University, Yalelaan 1, Utrecht 3584 CL, The Netherlands
| | - Mattie van Rijen
- Department of Orthopaedics and Regenerative Medicine Center,
University Medical Center Utrecht, Utrecht University Heidelberglaan 100,
Utrecht 3584 CX, The Netherlands
| | - René van Weeren
- Department of Clinical Sciences, Faculty of Veterinary Medicine,
Utrecht University, Yalelaan 1, Utrecht 3584 CL, The Netherlands
| | - Riccardo Levato
- Department of Clinical Sciences, Faculty of Veterinary Medicine,
Utrecht University, Yalelaan 1, Utrecht 3584 CL, The Netherlands; Department
of Orthopaedics and Regenerative Medicine Center, University Medical Center
Utrecht, Utrecht University, Heidelberglaan 100, Utrecht 3584 CX, The
Netherlands
| | - Jos Malda
- Department of Clinical Sciences, Faculty of Veterinary Medicine,
Utrecht University, Yalelaan 1, Utrecht 3584 CL, The Netherlands; Department
of Orthopaedics and Regenerative Medicine Center University Medical Center
Utrecht Utrecht University Heidelberglaan 100, Utrecht 3584 CX, The
Netherlands
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38
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Dewey MJ, Nosatov AV, Subedi K, Harley B. Anisotropic mineralized collagen scaffolds accelerate osteogenic response in a glycosaminoglycan-dependent fashion. RSC Adv 2020; 10:15629-15641. [PMID: 32655857 PMCID: PMC7351350 DOI: 10.1039/d0ra01336f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Regeneration of critically-sized craniofacial bone defects requires a template to promote cell activity and bone remodeling. However, induced regeneration becomes more challenging with increasing defect size. Methods of repair using allografts and autografts have inconsistent results, attributed to age-related regenerative capabilities of bone. We are developing a mineralized collagen scaffold to promote craniomaxillofacial bone regeneration as an alternative to repair. Here, we hypothesize modifying the pore anisotropy and glycosaminoglycan content of the scaffold will improve cell migration, viability, and subsequent bone formation. Using anisotropic and isotropic scaffold variants, we test the role of pore orientation on human mesenchymal stem cell (MSC) activity. We subsequently explore the role of glycosaminoglycan content, notably chondroitin-6-sulfate, chondroitin-4-sulfate, and heparin sulfate on mineralization. We find that while short term MSC migration and activity was not affected by pore orientation, increased bone mineral synthesis was observed in anisotropic scaffolds. Further, while scaffold glycosaminoglycan content did not impact cell viability, heparin sulfate and chondroitin-6-sulfate containing variants increased mineral formation at the late stage of in vitro culture, respectively. Overall, these findings show scaffold microstructural and proteoglycan modifications represent a powerful tool to improve MSC osteogenic activity. Mineralized collagen scaffolds were modified to include anisotropic pore architecture and one of three glycosaminoglycans in order to improve bone mineral formation in vitro.![]()
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Affiliation(s)
| | | | | | - Brendan Harley
- Dept. of Materials Science and Engineering, USA.,School of Chemical Sciences, USA.,Dept. Chemical and Biomolecular Engineering, USA.,Dept. of Chemical and Biomolecular Engineering, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 110 Roger Adams Laboratory 600 S. Mathews Ave., Urbana, IL 61801, USA
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39
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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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40
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Recent Advances in Anti-inflammatory Strategies for Implantable Biosensors and Medical Implants. BIOCHIP JOURNAL 2020. [DOI: 10.1007/s13206-020-4105-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Levato R, Jungst T, Scheuring RG, Blunk T, Groll J, Malda J. From Shape to Function: The Next Step in Bioprinting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906423. [PMID: 32045053 PMCID: PMC7116209 DOI: 10.1002/adma.201906423] [Citation(s) in RCA: 211] [Impact Index Per Article: 52.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/08/2019] [Indexed: 05/04/2023]
Abstract
In 2013, the "biofabrication window" was introduced to reflect the processing challenge for the fields of biofabrication and bioprinting. At that time, the lack of printable materials that could serve as cell-laden bioinks, as well as the limitations of printing and assembly methods, presented a major constraint. However, recent developments have now resulted in the availability of a plethora of bioinks, new printing approaches, and the technological advancement of established techniques. Nevertheless, it remains largely unknown which materials and technical parameters are essential for the fabrication of intrinsically hierarchical cell-material constructs that truly mimic biologically functional tissue. In order to achieve this, it is urged that the field now shift its focus from materials and technologies toward the biological development of the resulting constructs. Therefore, herein, the recent material and technological advances since the introduction of the biofabrication window are briefly summarized, i.e., approaches how to generate shape, to then focus the discussion on how to acquire the biological function within this context. In particular, a vision of how biological function can evolve from the possibility to determine shape is outlined.
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Affiliation(s)
- Riccardo Levato
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, 3584 CX, Utrecht, The Netherlands
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CX, Utrecht, The Netherlands
| | - Tomasz Jungst
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Ruben G Scheuring
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Torsten Blunk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Würzburg, Oberdürrbacher Str. 6, 97080, Würzburg, Germany
| | - Juergen Groll
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, 3584 CX, Utrecht, The Netherlands
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CX, Utrecht, The Netherlands
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42
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Role of macrophage TRPV4 in inflammation. J Transl Med 2020; 100:178-185. [PMID: 31645630 PMCID: PMC7261496 DOI: 10.1038/s41374-019-0334-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/19/2019] [Accepted: 08/30/2019] [Indexed: 01/05/2023] Open
Abstract
Transient receptor ion channels have emerged as immensely important channels/receptors in diverse physiological and pathological responses. Of particular interest is the transient receptor potential channel subfamily V member 4 (TRPV4), which is a polymodal, nonselective, calcium-permeant cation channel, and is activated by both endogenous and exogenous stimuli. Both neuronal and nonneuronal cells express functional TRPV4, which is responsive to a variety of biochemical and biomechanical stimuli. Emerging discoveries have advanced our understanding of the role of macrophage TRPV4 in numerous inflammatory diseases. In lung injury, TRPV4 mediates macrophage phagocytosis, secretion of pro-resolution cytokines, and generation of reactive oxygen species. TRPV4 regulates lipid-laden macrophage foam cell formation, the hallmark of atheroinflammatory conditions, in response to matrix stiffness and lipopolysaccharide stimulation. Accumulating data also point to a role of macrophage TRPV4 in the pathogenesis of the foreign body response, a chronic inflammatory condition, through the formation of foreign body giant cells. Deletion of TRPV4 in macrophages suppresses the allergic and nonallergic itch in a mouse model, suggesting a role of TRPV4 in skin disease. Here, we discuss the current understanding of the role of macrophage TRPV4 in various inflammatory conditions.
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43
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Christen MO, Vercesi F. Polycaprolactone: How a Well-Known and Futuristic Polymer Has Become an Innovative Collagen-Stimulator in Esthetics. Clin Cosmet Investig Dermatol 2020; 13:31-48. [PMID: 32161484 PMCID: PMC7065466 DOI: 10.2147/ccid.s229054] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/07/2019] [Indexed: 12/15/2022]
Abstract
Compared to other domains, tissue engineering and esthetics have dramatically expanded in recent years, leading to both major biomedical advances and futuristic perspectives. The two share a common approach based on biomaterials, especially polymers. This paper illustrates this with the example of polycaprolactone (PCL), a polymer synthesized in the early 1930s, and one of its most recent applications, a PCL-based collagen stimulator, a filler used in esthetics. PCL is biocompatible and biodegradable. Its specific physicochemical and mechanical properties, viscoelasticity and ease of shaping led to the production of PCL-based products with various shapes and durations dependent on its biodegradation kinetics. PCL has been safely used in the biomedical field for more than 70 years, from sutures to tissue and organ replacement by 3D printing. The PCL-based collagen stimulator is composed of PCL microspheres suspended in a carboxymethyl-cellulose gel carrier providing immediate and sustained volumizing effects when injected; the morphology, the biocompatibility of the PCL microspheres embedded with the collagen fibers produced all contribute to the creation of a unique 3D scaffold for a sustained effect. Its safety has been investigated in clinical studies and vigilance surveys. Recently published experts' recommendations on injection modalities and techniques should help further optimize treatment outcome and safety. This paper also integrates reviews and recommendations on the prevention and management of adverse events related to dermal and subdermal fillers including the PCL-based collagen stimulator. In addition, in terms of efficacy and safety, this product benefits from its daily clinical use in esthetics worldwide and continuous extensive fundamental and clinical research, both on it and the PCL polymer. Forthcoming data from further investigations will reinforce knowledge of the product and procedures in the field.
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44
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Najdahmadi A, Smink AM, de Vos P, Lakey JR, Botvinick E. Non-Invasive Monitoring of Oxygen Tension and Oxygen Transport Inside Subcutaneous Devices After H 2S Treatment. Cell Transplant 2020; 29:963689719893936. [PMID: 32024377 PMCID: PMC7444232 DOI: 10.1177/0963689719893936] [Citation(s) in RCA: 2] [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: 10/26/2018] [Revised: 10/21/2019] [Accepted: 11/08/2019] [Indexed: 12/17/2022] Open
Abstract
Medical devices for cell therapy can be improved through prevascularization. In this work we study the vascularization of a porous polymer device, previously used by our group for pancreatic islet transplantation with results indicating improved glycemic control. Oxygen partial pressure within such devices was monitored non-invasively using an optical technique. Oxygen-sensitive tubes were fabricated and placed inside devices prior to subcutaneous implantation in nude mice. We tested the hypothesis that vascularization will be enhanced by administration of the pro-angiogenic factor hydrogen sulfide (H2S). We found that oxygen dynamics were unique to each implant and that the administration of H2S does not result in significant changes in perfusion of the devices as compared with control. These observations suggest that vascular perfusion and density are not necessarily correlated, and that the rate of vascularization was not enhanced by the pro-angiogenic agent.
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Affiliation(s)
- Avid Najdahmadi
- Department of Materials Science and Engineering, University of
California Irvine, Irvine, CA, USA
| | - Alexandra M. Smink
- Department of Pathology and Medical Biology, University Medical
Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Paul de Vos
- Department of Pathology and Medical Biology, University Medical
Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Jonathan R.T. Lakey
- Department of Biomedical Engineering, University of California
Irvine, Irvine, CA, USA
- Department of Surgery, University of California Irvine, Irvine, CA,
USA
| | - Elliot Botvinick
- Department of Materials Science and Engineering, University of
California Irvine, Irvine, CA, USA
- Department of Biomedical Engineering, University of California
Irvine, Irvine, CA, USA
- Department of Surgery, University of California Irvine, Irvine, CA,
USA
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45
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Taylor MJ, Graham DJ, Gamble LJ. Time-of-flight secondary ion mass spectrometry three-dimensional imaging of surface modifications in poly(caprolactone) scaffold pores. J Biomed Mater Res A 2019; 107:2195-2204. [PMID: 31116499 PMCID: PMC6690353 DOI: 10.1002/jbm.a.36729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/14/2019] [Accepted: 05/20/2019] [Indexed: 01/24/2023]
Abstract
Scaffolds composed of synthetic polymers such as poly(caprolactone) (PCL) are widely used for the support and repair of tissues in biomedicine. Pores are common features in scaffolds as they facilitate cell penetration. Various surface modifications can be performed to promote key biological responses to these scaffolds. However, verifying the chemistry of these materials post surface modification is problematic due to the combination of three-dimensional (3D) topography and surface sensitivity. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is commonly used to correlate surface chemistry with cell response. In this study, 3D imaging mass spectrometry analysis of surface modified synthetic polymer scaffolds is demonstrated using PCL porous scaffold, a pore filling polymer sample preparation, and 3D imaging ToF-SIMS. We apply a simple sample preparation procedure, filling the scaffold pores with a poly(vinyl alcohol)/glycerol mixture to remove topographic influence on image quality. This filling method allows the scaffold (PCL) and filler secondary ions to be reconstructed into a 3D chemical image of the pore. Furthermore, we show that surface modifications in the pores of synthetic polymer scaffolds can be mapped in 3D. Imaging of "dry" and "wet" surface modifications is demonstrated as well as a comparison of surface modifications with relatively strong ToF-SIMS peaks (fluorocarbon films [FC]) and to more biologically relevant surface modification of a protein (bovine serum albumin [BSA]). We demonstrate that surface modifications can be imaged in 3D showing that characteristic secondary ions associated with FC and BSA are associated with C3 F8 plasma treatment and BSA, respectively within the pore.
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Affiliation(s)
- Michael J Taylor
- NESAC/BIO, Department of Bioengineering, University of Washington, Seattle, Washington
| | - Daniel J Graham
- NESAC/BIO, Department of Bioengineering, University of Washington, Seattle, Washington
| | - Lara J Gamble
- NESAC/BIO, Department of Bioengineering, University of Washington, Seattle, Washington
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46
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Kim J, In C, Park N, Kim BJ, Yoon H. Comparative study of rheological properties and preclinical data of porous polycaprolactone microsphere dermal fillers. J Cosmet Dermatol 2019; 19:596-604. [DOI: 10.1111/jocd.13076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 06/04/2019] [Accepted: 06/27/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Jin‐Su Kim
- Samyang Biopharmaceutical Corp. R&D Center Seongnam Korea
| | - Chang‐Hoon In
- Samyang Biopharmaceutical Corp. R&D Center Seongnam Korea
| | - Na‐Jeong Park
- Samyang Biopharmaceutical Corp. R&D Center Seongnam Korea
| | - Beom Joon Kim
- Department of Dermatology Chung‐Ang University College of Medicine Seoul Korea
- Department of Medicine, Graduate School Chung‐Ang University Seoul Korea
| | - Hye‐Sung Yoon
- Samyang Biopharmaceutical Corp. R&D Center Seongnam Korea
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47
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Goswami R, Arya RK, Biswas D, Zhu X, Rahaman SO. Transient Receptor Potential Vanilloid 4 Is Required for Foreign Body Response and Giant Cell Formation. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:1505-1512. [PMID: 31121133 DOI: 10.1016/j.ajpath.2019.04.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/05/2019] [Accepted: 04/11/2019] [Indexed: 12/11/2022]
Abstract
The presence of biomaterials and devices implanted into soft tissue is associated with development of a foreign body response (FBR), a chronic inflammatory condition that can ultimately lead to implant failure, which may cause harm to or death of the patient. Development of FBR includes activation of macrophages at the tissue-implant interface, generation of destructive foreign body giant cells (FBGCs), and generation of fibrous tissue that encapsulates the implant. However, the mechanisms underlying the FBR remain poorly understood, as neither the materials composing the implants nor their chemical properties can explain triggering of the FBR. Herein, we report that genetic ablation of transient receptor potential vanilloid 4 (TRPV4), a Ca2+-permeable mechanosensitive cation channel in the transient receptor potential vanilloid family, protects TRPV4 knockout mice from FBR-related events. The mice showed diminished collagen deposition along with reduced macrophage accumulation and FBGC formation compared with wild-type mice in a s.c. implantation model. Analysis of macrophage markers in spleen tissues and peritoneal cavity showed that the TRPV4 deficiency did not impair basal macrophage maturation. Furthermore, genetic deficiency or pharmacologic antagonism of TRPV4 blocked cytokine-induced FBGC formation, which was restored by lentivirus-mediated TRPV4 reintroduction. Taken together, these results suggest an important, previously unknown, role for TRPV4 in FBR.
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Affiliation(s)
- Rishov Goswami
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
| | - Rakesh K Arya
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland
| | - Debabrata Biswas
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland
| | - Xiaoping Zhu
- Department of Veterinary Medicine, University of Maryland, College Park, Maryland
| | - Shaik O Rahaman
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland.
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48
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Huynh V, Jesmer AH, Shoaib MM, Wylie RG. Influence of Hydrophobic Cross-Linkers on Carboxybetaine Copolymer Stimuli Response and Hydrogel Biological Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1631-1641. [PMID: 30558419 DOI: 10.1021/acs.langmuir.8b03908] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Poly(carboxybetaine) (pCB) hydrogels do not elicit a foreign body response due to their low-fouling properties, making them ideal implantable materials for in vivo drug and cell delivery. Current reported pCB hydrogels are cross-linked using cytotoxic UV-initiated radical polymerization limiting clinical and in vivo translation. For clinical translation, we require in situ and biorthogonal cross-linking of pCB hydrogels that are both low-fouling and low-swelling to limit nonspecific interactions and minimize tissue damage, respectively. To this end, we synthesized carboxybetaine (CB) random copolymers (molecular weight (MW): ∼7-33 kDa; Đ: 1.1-1.36) containing azide (pCB-azide) or strained alkyne (Dibenzocyclooctyne (DBCO); pCB-DBCO) that rapidly cross-link upon mixing. Unlike CB homopolymers and other CB copolymers studied, high DBCO content pCB-DBCO30 (30% DBCO mole fraction) is thermoresponsive with a upper critical solution temperature (UCST; cloud point of ∼20 °C at 50 g/L) in water due to electrostatic associations. Due to the antipolyelectrolyte effect, pCB-DBCO30 is salt-responsive and is soluble even at low temperatures in 5 M NaCl, which prevents zwitterion electrostatic associations. pCB-azide and pCB-DBCO with 0.05 to 0.16 cross-linker mole fractions rapidly formed 10 wt % hydrogels upon mixing that were low-swelling (increase of ∼10% in wet weight) while remaining low-fouling to proteins (∼10-20 μg cm-2) and cells, making them suitable for in vivo applications. pCB-X31 hydrogels composed of pCB-azide32 and pCB-DBCO30 formed opaque gels in water and physiological conditions that shrunk to ∼70% of their original wet weight due to pCB-DBCO30's greater hydrophobicity and interchain electrostatic interactions, which promotes nonspecific protein adsorption (∼35 μg cm-2) and cell binding. Once formed, the electrostatic interactions in pCB-X31 hydrogels are not fully reversible with heat or salt. Although, pCB-X31 hydrogels are transparent when initially prepared in 5 M NaCl. This is the first demonstration of a thermo- and salt-responsive CB copolymer that can tune hydrogel protein and cell fouling properties.
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Affiliation(s)
- Vincent Huynh
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - Alexander H Jesmer
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - Muhammad M Shoaib
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - Ryan G Wylie
- Department of Chemistry and Chemical Biology , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
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49
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Affiliation(s)
- Wendy F Liu
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA.
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50
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Roberts S, Harmon TS, Schaal JL, Miao V, Li KJ, Hunt A, Wen Y, Oas TG, Collier JH, Pappu RV, Chilkoti A. Injectable tissue integrating networks from recombinant polypeptides with tunable order. NATURE MATERIALS 2018; 17:1154-1163. [PMID: 30323334 PMCID: PMC6329288 DOI: 10.1038/s41563-018-0182-6] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 08/29/2018] [Indexed: 05/23/2023]
Abstract
Emergent properties of natural biomaterials result from the collective effects of nanoscale interactions among ordered and disordered domains. Here, using recombinant sequence design, we have created a set of partially ordered polypeptides to study emergent hierarchical structures by precisely encoding nanoscale order-disorder interactions. These materials, which combine the stimuli-responsiveness of disordered elastin-like polypeptides and the structural stability of polyalanine helices, are thermally responsive with tunable thermal hysteresis and the ability to reversibly form porous, viscoelastic networks above threshold temperatures. Through coarse-grain simulations, we show that hysteresis arises from physical crosslinking due to mesoscale phase separation of ordered and disordered domains. On injection of partially ordered polypeptides designed to transition at body temperature, they form stable, porous scaffolds that rapidly integrate into surrounding tissue with minimal inflammation and a high degree of vascularization. Sequence-level modulation of structural order and disorder is an untapped principle for the design of functional protein-based biomaterials.
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Affiliation(s)
- Stefan Roberts
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Tyler S Harmon
- Department of Physics, Washington University in St. Louis, St. Louis, MO, USA
- Department of Biomedical Engineering and Center for Biological Systems Engineering , Washington University in St. Louis, St. Louis, MO, USA
| | - Jeffrey L Schaal
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Vincent Miao
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Kan Jonathan Li
- Department of Biochemistry, Duke University, Durham, NC, USA
| | - Andrew Hunt
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Yi Wen
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Terrence G Oas
- Department of Biochemistry, Duke University, Durham, NC, USA
| | - Joel H Collier
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Rohit V Pappu
- Department of Biomedical Engineering and Center for Biological Systems Engineering , Washington University in St. Louis, St. Louis, MO, USA
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering, Duke University, Durham, NC, USA.
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