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Papaioannou A, Vasilaki E, Loukelis K, Papadogianni D, Chatzinikolaidou M, Vamvakaki M. Bioactive and biomimetic 3D scaffolds for bone tissue engineering using graphitic carbon nitride as a sustainable visible light photoinitiator. BIOMATERIALS ADVANCES 2024; 157:213737. [PMID: 38211506 DOI: 10.1016/j.bioadv.2023.213737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/03/2023] [Accepted: 12/16/2023] [Indexed: 01/13/2024]
Abstract
Graphitic carbon nitride (g-C3N4) is explored as a novel sustainable visible light photoinitiator for the preparation of biomimetic 3D hydrogel scaffolds comprising gelatin methacrylamide (GelMA) and dopamine methacrylamide for use in tissue engineering. The initiator efficiency was assessed by comparing the swelling behavior and the stability of photopolymerized hydrogels prepared with GelMA of different degrees of functionalization and different comonomer compositions. Bioactive composite hydrogels with a 50 wt% nanohydroxyapatite (nHAp) content, to closely mimic the actual bone composition, were successfully obtained by the introduction of nHAp in the prepolymer solutions followed by photopolymerization. The composite hydrogels demonstrated enhanced mechanical properties and excellent stability in PBS verifying the preparation of robust 3D scaffolds for use in cancellous or pre-calcified bone tissue engineering applications. The in vitro cell response of the composite scaffolds exhibited high cell viability and enhanced differentiation of pre-osteoblasts to mature osteoblasts, demonstrating their osteogenic potential. This work establishes, for the first time, the excellent properties of g-C3N4 as a sustainable, visible light initiator, fully satisfying the principles of green chemistry, for the preparation of robust and biologically relevant hydrogels, and proposes a new approach to overcome the main challenges of conventional photoinitiators in cell scaffold fabrication, such as photobleaching, high cost and non-scalable synthesis employing toxic organic precursors and solvents.
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Affiliation(s)
- Anna Papaioannou
- School of Medicine, University of Crete, 700 13 Heraklion, Greece
| | - Evangelia Vasilaki
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Greece; Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, 700 13 Heraklion, Crete, Greece.
| | - Konstantinos Loukelis
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Greece
| | - Danai Papadogianni
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Greece
| | - Maria Chatzinikolaidou
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Greece; Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, 700 13 Heraklion, Crete, Greece
| | - Maria Vamvakaki
- Department of Materials Science and Technology, University of Crete, 700 13 Heraklion, Greece; Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, 700 13 Heraklion, Crete, Greece.
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2
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Li T, Liu Q, Qi H, Zhai W. Prestrain Programmable 4D Printing of Nanoceramic Composites with Bioinspired Microstructure. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204032. [PMID: 36180413 DOI: 10.1002/smll.202204032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/11/2022] [Indexed: 06/16/2023]
Abstract
Four-dimensional (4D) printing enables programmable, predictable, and precise shape change of responsive materials to achieve desirable behaviors beyond conventional three-dimensional (3D) printing. However, applying 4D printing to ceramics remains challenging due to their intrinsic brittleness and inadequate stimuli-responsive ability. Here, this work proposes a conceptional combination of bioinspired microstructure design and a programmable prestrain approach for 4D printing of nanoceramics. To overcome the flexibility limitation, the bioinspired concentric cylinder structure in the struts of 3D printed lattices are replicated to develop origami nanoceramic composites with high inorganic content (95 wt%). Furthermore, 4D printing is achieved by applying a programmed prestrain to the printed lattices, enabling the desired deformation when the prestrain is released. Due to the bioinspired concentric cylinder microstructures, the printed flexible nanoceramic composites exhibit superior mechanical performance and anisotropic thermal management capability. Further, by introducing oxygen vacancies to the ceramic nanosheets, conductive nanoceramic composites are prepared with a unique sensing capability for various sensing applications. Hence, this research breaks through the limitation of ceramics in 4D printing and achieves high-performance shape morphing materials for applications under extreme conditions, such as space exploration and high-temperature systems.
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Affiliation(s)
- Tian Li
- Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Quyang Liu
- Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Haobo Qi
- Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Wei Zhai
- Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore
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3
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Xia X, Yang Y, Zhou X, Liu E, Xu S. Mechanically tunable ion-crosslinked alginate-based gradient hydrogels by electrolysis-electrophoresis method. Carbohydr Polym 2022; 289:119473. [DOI: 10.1016/j.carbpol.2022.119473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/28/2022] [Accepted: 04/06/2022] [Indexed: 11/28/2022]
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4
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Zhang Q, Li C, Du X, Zhong H, He Z, Hong P, Li Y, Jing Z. High strength, tough and self-healing chitosan-based nanocomposite hydrogels based on the synergistic effects of hydrogen bond and coordination bond. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03163-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Wei H, Zhang B, Lei M, Lu Z, Liu J, Guo B, Yu Y. Visible-Light-Mediated Nano-biomineralization of Customizable Tough Hydrogels for Biomimetic Tissue Engineering. ACS NANO 2022; 16:4734-4745. [PMID: 35225602 DOI: 10.1021/acsnano.1c11589] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Biomineralized tough hydrogels (BTHs) have advanced applications in the fields of soft bioelectronics and biomimetic tissue engineering. But the development of rapid and general photomineralization strategies for one-step fabrication of customizable BTHs is still a challenging task. Here we report a straightforward, low-cost visible-light-mediated nano-biomineralization (VLMNB) strategy via a rational design of a phosphate source and efficient ruthenium photochemistry. Multinetwork tough hydrogels are simultaneously constructed under the same condition. Therefore, BTHs are rapidly prepared in a short time as low as ∼60 s under visible light irradiation. The in situ formation of calcium phosphate particles can improve BTHs' mechanical and biological properties and reduce the friction coefficient with bones. Furthermore, fast biomineralization and solidification processes in these BTHs benefit their injectable and highly flexible customizable design, showing applications of promoting customizable skin repair and bone regeneration.
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Affiliation(s)
- Hongqiu Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, China, 710127
| | - Bo Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China, 610064
| | - Ming Lei
- School of Astronautics, Northwestern Polytechnical University, Xi'an, China, 710072
| | - Zhe Lu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, China, 710127
| | - Jupen Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, China, 710127
| | - Baolin Guo
- Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, China, 710049
| | - You Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, China, 710127
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China, 730000
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6
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Shin YS, Jo MK, Cho YS, Yang SH. Diffusion-Controlled Crystallization of Calcium Phosphate in a Hydrogel toward a Homogeneous Octacalcium Phosphate/Agarose Composite. ACS OMEGA 2022; 7:1173-1185. [PMID: 35036780 PMCID: PMC8757456 DOI: 10.1021/acsomega.1c05761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/03/2021] [Indexed: 05/08/2023]
Abstract
Diffusion-controlled crystallization in a hydrogel has been investigated to synthesize organic/inorganic hybrid composites and obtain a fundamental understanding of the detailed mechanism of biomineralization. Although calcium phosphate/hydrogel composites have been intensively studied and developed for the application of bone substitutes, the synthesis of homogeneous and integrated composites remains challenging. In this work, diffusion-controlled systems were optimized by manipulating the calcium ion flux at the interface, concentration gradient, and diffusion coefficient to synthesize homogeneous octacalcium phosphate/hydrogel composites with respect to the crystal morphology and density. The ion flux and local pH play an important role in determining the morphology, density, and phase of the crystals. This study suggests a model system that can reveal the relation between local conditions and the resulting crystal phase in diffusion-limited systems and provides a synthetic method for homogeneously organized organic/inorganic composites.
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Wu M, Zhao Y, Jiang H, Xu X, Wang D, Xu X, Zhou Y, Tan H, Ding C, Li J. Self-Organized Spatiotemporal Mineralization of Hydrogel: A Simulant of Osteon. SMALL 2021; 18:e2106649. [PMID: 34921591 DOI: 10.1002/smll.202106649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/27/2021] [Indexed: 02/05/2023]
Abstract
Nature creates fascinating self-organized spatiotemporal patterns through the delicate control of reaction-diffusion dynamics. As the primary unit of cortical bone, osteon has concentric lamellar architecture, which plays a crucial role in the mechanical and physiological functions of bone. However, it remains a great challenge to fabricate the osteon-like structure in a natural self-organization way. Taking advantage of the nonequilibrium reaction in hydrogels, a simple mineralization strategy to closely mimic the formation of osteon in a mild physiological condition is developed. By constructing two reverse concentration gradients of ions from periphery to interior of cylindrical hydrogel, spatiotemporal self-organization of calcium phosphate in concentric rings is generated. It is noteworthy that minerals in different layers possess diverse contents and crystalline phases, which further guide the adhesion and spread of osteoblasts on these patterns, resembling the architecture and cytological behavior of osteon. Besides, theoretical data indicates the predominate role of ion concentrations and pH values of solution, in good accordance with experimental results. Independent of precise instruments, this lifelike method is easily obtained, cost-efficient, and effectively imitates the mineral deposition in osteon from a physiochemical view. The strategy may be expanded to develop other functional material patterns via spatiotemporal self-organization.
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Affiliation(s)
- Mingzhen Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Yao Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Haolun Jiang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Xiaoyang Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Dingqian Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Xinyuan Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Yahong Zhou
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Beijing, 100190, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Chunmei Ding
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.,CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Beijing, 100190, China
| | - Jianshu Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.,State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.,Med-X Center for Materials, Sichuan University, Chengdu, 610041, China
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Lu C, Qiu J, Zhao W, Sakai E, Zhang G, Nobe R, Kudo M, Komiyama T. Low-temperature adaptive conductive hydrogel based on ice structuring proteins/CaCl 2 anti-freeze system as wearable strain and temperature sensor. Int J Biol Macromol 2021; 188:534-541. [PMID: 34390749 DOI: 10.1016/j.ijbiomac.2021.08.060] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/27/2021] [Accepted: 08/08/2021] [Indexed: 12/24/2022]
Abstract
Conductive hydrogels as wearable devices meet the basic demands of mechanical flexibility and smart sensing. However, achieving anti-freeze property in conductive hydrogels is still challengeable. Here, a novel anti-freezing system based on ice structuring proteins and CaCl2 was introduced to enable a conductive hydrogel with low-temperature adaptability. Both formation of ice nuclei and ice growth of the hydrogel at sub-zero temperature could be inhibited. Supported by the anti-freeze system, the hydrogel revealed good flexibility (890% at -20 °C), recovery and conductivity (0.50 S/m at -20 °C) at both room temperature and sub-zero temperature. The low-temperature adaptability enabled the hydrogel to be used as strain and temperature sensors at both room temperature and sub-zero temperature. The anti-freeze system in this work is expected to open up a new avenue to promote the conductive hydrogel with low-temperature adaptability.
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Affiliation(s)
- Chunyin Lu
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan
| | - Jianhui Qiu
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan.
| | - Wei Zhao
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan
| | - Eiichi Sakai
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan
| | - Guohong Zhang
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan
| | - Rie Nobe
- Ecological Material Development Section, Akita Industrial Technology Center, Akita 010-1623, Japan
| | - Makoto Kudo
- Ecological Material Development Section, Akita Industrial Technology Center, Akita 010-1623, Japan
| | - Takao Komiyama
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo 015-0055, Japan
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9
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Xing W, Tang Y. On mechanical properties of nanocomposite hydrogels: Searching for superior properties. NANO MATERIALS SCIENCE 2021. [DOI: 10.1016/j.nanoms.2021.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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10
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Novel Hydrogel Scaffolds Based on Alginate, Gelatin, 2-Hydroxyethyl Methacrylate, and Hydroxyapatite. Polymers (Basel) 2021; 13:polym13060932. [PMID: 33803545 PMCID: PMC8002880 DOI: 10.3390/polym13060932] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/12/2021] [Accepted: 03/14/2021] [Indexed: 01/02/2023] Open
Abstract
Hydrogel scaffolding biomaterials are one of the most attractive polymeric biomaterials for regenerative engineering and can be engineered into tissue mimetic scaffolds to support cell growth due to their similarity to the native extracellular matrix. The novel, versatile hydrogel scaffolds based on alginate, gelatin, 2-hydroxyethyl methacrylate, and inorganic agent hydroxyapatite were prepared by modified cryogelation. The chemical composition, morphology, porosity, mechanical properties, effects on cell viability, in vitro degradation, in vitro and in vivo biocompatibility were tested to correlate the material’s composition with the corresponding properties. Scaffolds showed an interconnected porous microstructure, satisfactory mechanical strength, favorable hydrophilicity, degradation, and suitable in vitro and in vivo biocompatible behavior. Materials showed good biocompatibility with healthy human fibroblast in cell culture, as well as in vivo with zebrafish assay, suggesting newly synthesized hydrogel scaffolds as a potential new generation of hydrogel scaffolding biomaterials with tunable properties for versatile biomedical applications and tissue regeneration.
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11
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Hydroxyapatite (HA)-based hybrid bionanocomposite hydrogels: Ciprofloxacin delivery, release kinetics and antibacterial activity. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129095] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Gao Z, Hassouneh L, Yang X, Pang J, Thornton PD, Tronci G. Hydrogen phosphate-mediated acellular biomineralisation within a dual crosslinked hyaluronic acid hydrogel. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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A nanocomposite interpenetrating hydrogel with high toughness: effects of the posttreatment and molecular weight. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04761-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Sobczak-Kupiec A, Drabczyk A, Kudłacik-Kramarczyk S, Tyliszczak B. Hydroxyapatite powders prepared using two different methods as modifying agents of PVP/collagen composites designed for biomedical applications. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1785458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Agnieszka Sobczak-Kupiec
- Cracow university of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, Krakow, Poland
| | - Anna Drabczyk
- Cracow university of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, Krakow, Poland
| | - Sonia Kudłacik-Kramarczyk
- Cracow university of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, Krakow, Poland
| | - Bozena Tyliszczak
- Cracow university of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, Krakow, Poland
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16
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Lara-Rico R, Claudio-Rizo JA, Múzquiz-Ramos EM, Lopez-Badillo CM. Hidrogeles de colágeno acoplados con hidroxiapatita para aplicaciones en ingeniería tisular. TIP REVISTA ESPECIALIZADA EN CIENCIAS QUÍMICO-BIOLÓGICAS 2020. [DOI: 10.22201/fesz.23958723e.2020.0.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Los hidrogeles basados en colágeno son redes tridimensionales (3D) con la capacidad de absorber agua y una alta biocompatibilidad para utilizarlos en la reparación de tejidos dañados. Estos materiales presentan pobres propiedades mecánicas y velocidades de degradación rápidas, limitando su aplicación a estrategias de ingeniería tisular y biomedicina; por ésto, la incorporación de fases inorgánicas en la matriz 3D del colágeno como la hidroxiapatita ha contribuido en la mejora de sus propiedades, incrementado la eficiencia de los hidrogeles híbridos obtenidos. Este trabajo, presenta las contribuciones más relevantes relacionadas con los sistemas de hidrogeles basados en colágeno y partículas de hidroxiapatita dispersas dentro de la matriz colagénica, lo que evidencia que la combinación de los materiales no altera la biocompatibilidad y biodegradabilidad típicas del colágeno, permitiendo la adhesión, proliferación, crecimiento celular y control del metabolismo de las células implicadas en los procesos de una reparación ósea, presentando a los hidrogeles como una estrategia para su uso potencial en la ingeniería tisular.
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A mechanically strong polyvinyl alcohol/poly(2-(N,N′-dimethyl amino) ethyl methacrylate)-poly (acrylic acid) hydrogel with pH-responsiveness. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04652-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Chen S, Jang TS, Pan HM, Jung HD, Sia MW, Xie S, Hang Y, Chong SKM, Wang D, Song J. 3D Freeform Printing of Nanocomposite Hydrogels through in situ Precipitation in Reactive Viscous Fluid. Int J Bioprint 2020; 6:258. [PMID: 32782988 PMCID: PMC7415863 DOI: 10.18063/ijb.v6i2.258] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 03/03/2020] [Indexed: 12/25/2022] Open
Abstract
Composite hydrogels have gained great attention as three-dimensional (3D) printing biomaterials because of their enhanced intrinsic mechanical strength and bioactivity compared to pure hydrogels. In most conventional printing methods for composite hydrogels, particles are preloaded in ink before printing, which often reduces the printability of composite ink with little mechanical improvement due to poor particle-hydrogel interaction of physical mixing. In contrast, the in situ incorporation of nanoparticles into a hydrogel during 3D printing achieves uniform distribution of particles with remarkable mechanical reinforcement, while precursors dissolved in inks do not influence the printing process. Herein, we introduced a "printing in liquid" technique coupled with a hybridization process, which allows 3D freeform printing of nanoparticle-reinforced composite hydrogels. A viscoplastic matrix for this printing system provides not only support for printed hydrogel filaments but also chemical reactants to induce various reactions in printed objects for in situ modification. Nanocomposite hydrogel scaffolds were successfully fabricated through this 3D freeform printing of hyaluronic acid (HAc)-alginate (Alg) hydrogel inks through a two-step crosslinking strategy. The first ionic crosslinking of Alg provided structural stability during printing, while the secondary crosslinking of photo-curable HAc improved the mechanical and physiological stability of the nanocomposite hydrogels. For in situ precipitation during 3D printing, phosphate ions were dissolved in the hydrogel ink and calcium ions were added to the viscoplastic matrix. The composite hydrogels demonstrated a significant improvement in mechanical strength, biostability, as well as biological performance compared to pure HAc. Moreover, the multi-material printing of composites with different calcium phosphate contents was achieved by adjusting the ionic concentration of inks. Our method greatly accelerates the 3D printing of various functional or hybridized materials with complex geometries through the design and modification of printing materials coupled with in situ post-printing functionalization and hybridization in reactive viscoplastic matrices.
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Affiliation(s)
- Shengyang Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Tae-Sik Jang
- Liquid Processing and Casting Technology R&D Group, Korea Institute of Industrial Technology, Incheon 406-840, Republic of Korea
| | - Houwen Matthew Pan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Hyun-Do Jung
- Liquid Processing and Casting Technology R&D Group, Korea Institute of Industrial Technology, Incheon 406-840, Republic of Korea
| | - Ming Wei Sia
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Shuying Xie
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Yao Hang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, P. R. China
| | - Seow Khoon Mark Chong
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Dongan Wang
- Department of Biomedical Engineering, City University of Hong Kong,83 Tat Chee Avenue, Kowloon Tong, Hong Kong
| | - Juha Song
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
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Chen S, Jang TS, Pan HM, Jung HD, Sia MW, Xie S, Hang Y, Chong SKM, Wang D, Song J. 3D Freeform Printing of Nanocomposite Hydrogels through in situ Precipitation in Reactive Viscous Fluid. Int J Bioprint 2020. [PMID: 32782988 DOI: 10.18063/ijb.v6i2.258.] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Composite hydrogels have gained great attention as three-dimensional (3D) printing biomaterials because of their enhanced intrinsic mechanical strength and bioactivity compared to pure hydrogels. In most conventional printing methods for composite hydrogels, particles are preloaded in ink before printing, which often reduces the printability of composite ink with little mechanical improvement due to poor particle-hydrogel interaction of physical mixing. In contrast, the in situ incorporation of nanoparticles into a hydrogel during 3D printing achieves uniform distribution of particles with remarkable mechanical reinforcement, while precursors dissolved in inks do not influence the printing process. Herein, we introduced a "printing in liquid" technique coupled with a hybridization process, which allows 3D freeform printing of nanoparticle-reinforced composite hydrogels. A viscoplastic matrix for this printing system provides not only support for printed hydrogel filaments but also chemical reactants to induce various reactions in printed objects for in situ modification. Nanocomposite hydrogel scaffolds were successfully fabricated through this 3D freeform printing of hyaluronic acid (HAc)-alginate (Alg) hydrogel inks through a two-step crosslinking strategy. The first ionic crosslinking of Alg provided structural stability during printing, while the secondary crosslinking of photo-curable HAc improved the mechanical and physiological stability of the nanocomposite hydrogels. For in situ precipitation during 3D printing, phosphate ions were dissolved in the hydrogel ink and calcium ions were added to the viscoplastic matrix. The composite hydrogels demonstrated a significant improvement in mechanical strength, biostability, as well as biological performance compared to pure HAc. Moreover, the multi-material printing of composites with different calcium phosphate contents was achieved by adjusting the ionic concentration of inks. Our method greatly accelerates the 3D printing of various functional or hybridized materials with complex geometries through the design and modification of printing materials coupled with in situ post-printing functionalization and hybridization in reactive viscoplastic matrices.
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Affiliation(s)
- Shengyang Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Tae-Sik Jang
- Liquid Processing and Casting Technology R&D Group, Korea Institute of Industrial Technology, Incheon 406-840, Republic of Korea
| | - Houwen Matthew Pan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Hyun-Do Jung
- Liquid Processing and Casting Technology R&D Group, Korea Institute of Industrial Technology, Incheon 406-840, Republic of Korea
| | - Ming Wei Sia
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Shuying Xie
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Yao Hang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, P. R. China
| | - Seow Khoon Mark Chong
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Dongan Wang
- Department of Biomedical Engineering, City University of Hong Kong,83 Tat Chee Avenue, Kowloon Tong, Hong Kong
| | - Juha Song
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
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20
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Lowe B, Hardy JG, Walsh LJ. Optimizing Nanohydroxyapatite Nanocomposites for Bone Tissue Engineering. ACS OMEGA 2020; 5:1-9. [PMID: 31956745 PMCID: PMC6963893 DOI: 10.1021/acsomega.9b02917] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 12/04/2019] [Indexed: 05/29/2023]
Abstract
Bone tissue engineering involves the combined use of materials with functional properties to regenerate bone. Nanohydroxyapatite (nHA) can influence the behavior of cells. The functional and structural properties of nHA can be controlled during nanoparticle synthesis. This review defines the relationship between the attributes of nHA nanoparticles and their biological effects, focusing on biocompatibility, surface-area-to-volume ratio, bonding chemistry, and substrate functionality. The paper explores how these aspects have been applied in the development of scaffolds for the repair of damaged bone or regeneration of missing bone.
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Affiliation(s)
- Baboucarr Lowe
- School
of Dentistry, The University of Queensland, Brisbane QLD 4006, Australia
| | - John G. Hardy
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K.
- Materials
Science Institute, Lancaster University, Lancaster LA1 4YB, U.K.
| | - Laurence J. Walsh
- School
of Dentistry, The University of Queensland, Brisbane QLD 4006, Australia
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21
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Feng Z, Zuo H, Hu J, Gao W, Yu B, Ning N, Tian M, Zhang L. Mussel-Inspired Highly Stretchable, Tough Nanocomposite Hydrogel with Self-Healable and Near-Infrared Actuated Performance. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04521] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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22
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Zhang X, Shen W, Dou J, Meng Y, Fang S, Liu R. Enhanced mechanical properties and self‐healing behavior of PNIPAM nanocomposite hydrogel by using POSS as a physical crosslinker. J Appl Polym Sci 2019. [DOI: 10.1002/app.48486] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xiaojing Zhang
- College of Materials and Chemical EngineeringZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science Zhengzhou 450002 People's Republic of China
| | - Weiwei Shen
- College of Materials and Chemical EngineeringZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science Zhengzhou 450002 People's Republic of China
| | - Jingcheng Dou
- College of Materials and Chemical EngineeringZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science Zhengzhou 450002 People's Republic of China
| | - Yang Meng
- College of Materials and Chemical EngineeringZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science Zhengzhou 450002 People's Republic of China
| | - Shaoming Fang
- College of Materials and Chemical EngineeringZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science Zhengzhou 450002 People's Republic of China
| | - Ruixue Liu
- College of Materials and Chemical EngineeringZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science Zhengzhou 450002 People's Republic of China
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23
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24
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Takallu S, Mirzaei E, Azadi A, Karimizade A, Tavakol S. Plate‐shape carbonated hydroxyapatite/collagen nanocomposite hydrogel via
in situ
mineralization of hydroxyapatite concurrent with gelation of collagen at pH = 7.4 and 37°C. J Biomed Mater Res B Appl Biomater 2018; 107:1920-1929. [DOI: 10.1002/jbm.b.34284] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/25/2018] [Accepted: 10/29/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Sara Takallu
- Department of Medical NanotechnologySchool of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences Shiraz Iran
| | - Esmaeil Mirzaei
- Department of Medical NanotechnologySchool of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences Shiraz Iran
| | - Amir Azadi
- Department of Medical NanotechnologySchool of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences Shiraz Iran
- Pharmaceutical Sciences Research CenterShiraz University of Medical Sciences Shiraz Iran
| | - Ayoob Karimizade
- Department of Medical NanotechnologySchool of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences Shiraz Iran
| | - Shima Tavakol
- Cellular and Molecular Research CenterIran University of Medical Sciences Tehran Iran
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25
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Bentonite Reinforced Tough Composite Hydrogels as Potential Artificial Articular Cartilage. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-8219-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Toledo L, Racine L, Pérez V, Henríquez JP, Auzely-Velty R, Urbano BF. Physical nanocomposite hydrogels filled with low concentrations of TiO2 nanoparticles: Swelling, networks parameters and cell retention studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:769-778. [DOI: 10.1016/j.msec.2018.07.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 06/05/2018] [Accepted: 07/09/2018] [Indexed: 12/24/2022]
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27
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Xiao S, Zhang M, He X, Huang L, Zhang Y, Ren B, Zhong M, Chang Y, Yang J, Zheng J. Dual Salt- and Thermoresponsive Programmable Bilayer Hydrogel Actuators with Pseudo-Interpenetrating Double-Network Structures. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21642-21653. [PMID: 29878750 DOI: 10.1021/acsami.8b06169] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Development of smart soft actuators is highly important for fundamental research and industrial applications but has proved to be extremely challenging. In this work, we present a facile, one-pot, one-step method to prepare dual-responsive bilayer hydrogels, consisting of a thermoresponsive poly( N-isopropylacrylamide) (polyNIPAM) layer and a salt-responsive poly(3-(1-(4-vinylbenzyl)-1 H-imidazol-3-ium-3-yl)propane-1-sulfonate) (polyVBIPS) layer. Both polyNIPAM and polyVBIPS layers exhibit a completely opposite swelling/shrinking behavior, where polyNIPAM shrinks (swells) but polyVBIPS swells (shrinks) in salt solution (water) or at high (low) temperatures. By tuning NIPAM:VBIPS ratios, the resulting polyNIPAM/polyVBIPS bilayer hydrogels enable us to achieve fast and large-amplitude bidirectional bending in response to temperatures, salt concentrations, and salt types. Such bidirectional bending, bending orientation, and degree can be reversibly, repeatedly, and precisely controlled by salt- or temperature-induced cooperative swelling-shrinking properties from both layers. Based on their fast, reversible, and bidirectional bending behavior, we further design two conceptual hybrid hydrogel actuators, serving as a six-arm gripper to capture, transport, and release an object and an electrical circuit switch to turn on-and-off a lamp. Different from the conventional two- or multistep methods for preparation of bilayer hydrogels, our simple, one-pot, one-step method and a new bilayer hydrogel system provide an innovative concept to explore new hydrogel-based actuators through combining different responsive materials that allow us to program different stimuli for soft and intelligent materials applications.
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Affiliation(s)
- Shengwei Xiao
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
- School of Pharmaceutical and Chemical Engineering , Taizhou University , Jiaojiang 318000 , China
| | - Mingzhen Zhang
- Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | - Xiaomin He
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Lei Huang
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Yanxian Zhang
- Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | - Baiping Ren
- Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
| | | | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering , Chung Yuan Christian University , Chung-Li , Taoyuan 320 , Taiwan
| | - Jintao Yang
- College of Materials Science & Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering , The University of Akron , Akron , Ohio 44325 , United States
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28
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Maity S, Ray SS, Chatterjee A, Chakraborty N, Ganguly J. Sugar‐Based Self‐Assembly of Hydrogel Nanotubes Manifesting ESIPT: Theoretical Insight and Application in Live Cell Imaging. ChemistrySelect 2018. [DOI: 10.1002/slct.201800604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Santu Maity
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
| | - Suvonil Sinha Ray
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
| | | | | | - Jhuma Ganguly
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
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29
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Hughes EAB, Cox SC, Cooke ME, Davies OG, Williams RL, Hall TJ, Grover LM. Interfacial Mineral Fusion and Tubule Entanglement as a Means to Harden a Bone Augmentation Material. Adv Healthc Mater 2018; 7:e1701166. [PMID: 29325202 DOI: 10.1002/adhm.201701166] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/08/2017] [Indexed: 11/07/2022]
Abstract
A new bone augmenting material is reported, which is formed from calcium-loaded hydrogel-based spheres. On immersion of these spheres in a physiological medium, they become surrounded with a sheath of precipitate, which ruptures due to a build-up in osmotic pressure. This results in the formation of mineral tubes that protrude from the sphere surface. When brought into close contact with one another, these spheres become fused through the entanglement and subsequent interstitial mineralization of the mineral tubules. The tubular calcium phosphate induces the expression of osteogenic genes (runt-related transcription factor 2 (RUNX2), transcription factor SP7 (SP7), collagen type 1 alpha 1 (COL1A1), and bone gamma-carboxyglutamic acid-containing protein (BGLAP)) and promotes the formation of mineral nodules in preosteoblast cultures comparable to an apatitic calcium phosphate phase. Furthermore, alkaline phosphatase (ALP) is significantly upregulated in the presence of tubular materials after 10 d in culture compared with control groups (p < 0.001) and sintered apatite (p < 0.05). This is the first report of a bioceramic material that is formed in its entirety in situ and is therefore likely to provide a better proxy for biological mineral than other existing synthetic alternatives to bone grafts.
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Affiliation(s)
- Erik A. B. Hughes
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
| | - Sophie C. Cox
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
| | - Megan E. Cooke
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
- Institute of Inflammation and Ageing; MRC Musculoskeletal Ageing Centre; QE Hospital; B15 2TT UK
| | - Owen G. Davies
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
- School of Sport, Exercise and Health Sciences; Loughborough University; Loughborough LE11 3TU UK
| | - Richard L. Williams
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
| | - Thomas J. Hall
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
| | - Liam M. Grover
- School of Chemical Engineering; University of Birmingham; Birmingham B15 2TT UK
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30
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Gao C, An Q, Xiao Z, Zhai S, Zhai B, Shi Z. Alginate and polyethyleneimine dually mediated synthesis of nanosilver-containing composites for efficient p-nitrophenol reduction. Carbohydr Polym 2018; 181:744-751. [DOI: 10.1016/j.carbpol.2017.11.083] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 11/22/2017] [Accepted: 11/22/2017] [Indexed: 11/28/2022]
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31
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Zhu S, Yuan Q, Yin T, You J, Gu Z, Xiong S, Hu Y. Self-assembly of collagen-based biomaterials: preparation, characterizations and biomedical applications. J Mater Chem B 2018; 6:2650-2676. [DOI: 10.1039/c7tb02999c] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
By combining regulatory parameters with characterization methods, researchers can selectively fabricate collagenous biomaterials with various functional responses for biomedical applications.
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Affiliation(s)
- Shichen Zhu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
| | - Qijuan Yuan
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Tao Yin
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
| | - Juan You
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
| | - Zhipeng Gu
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Shanbai Xiong
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
| | - Yang Hu
- College of Food Science and Technology and MOE Key Laboratory of Environment Correlative Dietology
- Huazhong Agricultural University
- Wuhan 430070
- P. R. China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province
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32
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Su C, Su Y, Li Z, Haq MA, Zhou Y, Wang D. In situ synthesis of bilayered gradient poly(vinyl alcohol)/hydroxyapatite composite hydrogel by directional freezing-thawing and electrophoresis method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:76-83. [DOI: 10.1016/j.msec.2017.03.136] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 03/10/2017] [Accepted: 03/13/2017] [Indexed: 01/04/2023]
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33
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Simultaneous formation and mineralization of star-P(EO- stat -PO) hydrogels. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:471-477. [DOI: 10.1016/j.msec.2017.02.088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/16/2017] [Accepted: 02/17/2017] [Indexed: 11/20/2022]
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34
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Heo DN, Castro NJ, Lee SJ, Noh H, Zhu W, Zhang LG. Enhanced bone tissue regeneration using a 3D printed microstructure incorporated with a hybrid nano hydrogel. NANOSCALE 2017; 9:5055-5062. [PMID: 28211933 PMCID: PMC5398931 DOI: 10.1039/c6nr09652b] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Three-dimensional (3D) functional constructs with biomimetic mechanical and chemical properties are ideal for various regenerative medicine applications. These properties of 3D fabricated constructs mainly depend on the intrinsic characteristics of the materials and fabrication method. In this respect, the current use of hydrogels for musculoskeletal tissue repair is not ideal due to the lack of suitable mechanical properties, as well as the high biomimetic requirement for success. To overcome this limitation, we developed a novel functionalized hydrogel with bioactive gold nanoparticles (GNPs), reinforcing a 3D printed microstructure via fused deposition modeling (FDM) for bone tissue regeneration. We used biodegradable thermoplastic polylactic acid (PLA) as the 3D printed microstructure in combination with photo-curable gelatin hydrogels as the encapsulation matrix for the incorporation of cyclic RGD conjugated GNPs (RGNP), and investigated their mechanical properties. In addition, human adipose-derived stem cells (ADSCs) were encapsulated within the gelatin hydrogel and examined for viability, morphology, and osteogenic differentiation in vitro. The results showed that the stiffness of the composite hydrogel on reinforcing a 3D printed microstructure can be readily modulated to simulate the stiffness of the human mandibular condyle. ADSCs encapsulated in the composite structures remained viable within the hydrogel and showed excellent spreading on the 3D printed PLA microstructure. More importantly, osteogenic differentiation with incorporated RGNPs promoted significantly higher gene expression of osteogenic specific factors. Therefore, reinforced composite hydrogels are suitable for stem cell differentiation control and bone tissue regeneration.
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Affiliation(s)
- Dong Nyoung Heo
- Department of Mechanical and Aerospace Engineering, The George Washington University, DC 20052, USA.
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35
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Kong D, Chen Z. Evaluation of the interaction between hydroxyapatite and bisphosphonate by nonlinear capillary electrochromatography. J Sep Sci 2017; 40:2030-2036. [DOI: 10.1002/jssc.201700028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/14/2017] [Accepted: 02/20/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Deying Kong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education; Wuhan University School of Pharmaceutical Sciences; Wuhan China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Beijing China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education; Wuhan University School of Pharmaceutical Sciences; Wuhan China
- State Key Laboratory of Transducer Technology; Chinese Academy of Sciences; Beijing China
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36
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Gao C, An QD, Xiao Z, Zhai S, Zhai B, Shi Z. Highly recyclable Ag NPs/alginate composite beads prepared via one-pot encapsulation method for efficient continuous reduction of p-nitrophenol. NEW J CHEM 2017. [DOI: 10.1039/c7nj03467a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recyclable Ag NPs/alginate composite beads, performing well in dynamic catalytic hydrogenation of p-nitrophenol, were prepared via a one-pot encapsulation method.
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Affiliation(s)
- Ce Gao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Qing-Da An
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zuoyi Xiao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Shangru Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Bin Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- China
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37
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Heinemann C, Heinemann S, Kruppke B, Worch H, Thomas J, Wiesmann H, Hanke T. Electric field-assisted formation of organically modified hydroxyapatite (ormoHAP) spheres in carboxymethylated gelatin gels. Acta Biomater 2016; 44:135-43. [PMID: 27544814 DOI: 10.1016/j.actbio.2016.08.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 08/04/2016] [Accepted: 08/16/2016] [Indexed: 10/21/2022]
Abstract
UNLABELLED A biomimetic strategy was developed in order to prepare organically modified hydroxyapatite (ormoHAP) with spherical shape. The technical approach is based on electric field-assisted migration of calcium ions and phosphate ions into a hydrogel composed of carboxymethylated gelatin. The electric field as well as the carboxymethylation using glucuronic acid (GlcA) significantly accelerates the mineralization process, which makes the process feasible for lab scale production of ormoHAP spheres and probably beyond. A further process was developed for gentle separation of the ormoHAP spheres from the gelatin gel without compromising the morphology of the mineral. The term ormoHAP was chosen since morphological analyses using electron microscopy (SEM, TEM) and element analysis (EDX, FT-IR, XRD) confirmed that carboxymethylated gelatin molecules use to act as organic templates for the formation of nanocrystalline HAP. The hydroxyapatite (HAP) crystals self-organize to form hollow spheres with diameters ranging from 100 to 500nm. The combination of the biocompatible chemical composition and the unique structure of the nanocomposites is considered to be a useful basis for future applications in functionalized degradable biomaterials. STATEMENT OF SIGNIFICANCE A novel bioinspired mineralization process was developed based on electric field-assisted migration of calcium and phosphate ions into biochemically carboxymethylated gelatin acting as organic template. Advantages over conventional hydroxyapatite include particle size distribution and homogeneity as well as achievable mechanical properties of relevant composites. Moreover, specifically developed calcium ion or phosphate ion release during degradation can be useful to adjust the fate of bone cells in order to manipulate remodeling processes. The hollow structure of the spheres can be useful for embedding drugs in the core, encapsulated by the highly mineralized outer shell. In this way, controlled drug release could be achieved, which enables advanced strategies for threating bone-related diseases, e.g. osteoporosis and multiple myeloma.
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38
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Bjørnøy SH, Bassett DC, Ucar S, Strand BL, Andreassen JP, Sikorski P. A correlative spatiotemporal microscale study of calcium phosphate formation and transformation within an alginate hydrogel matrix. Acta Biomater 2016; 44:254-66. [PMID: 27567962 DOI: 10.1016/j.actbio.2016.08.041] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 08/16/2016] [Accepted: 08/19/2016] [Indexed: 01/24/2023]
Abstract
UNLABELLED The modification of soft hydrogels with hard inorganic components is a method used to form composite materials with application in non-load-bearing bone tissue engineering. The inclusion of an inorganic component may provide mechanical enhancement, introduce osteoconductive or osteoinductive properties, or change other aspects of interactions between native or implanted cells and the material. A thorough understanding of the interactions between such components is needed to improve the rational design of such biomaterials. To achieve this goal, model systems which could allow study of the formation and transformation of mineral phases within a hydrogel network with a range of experimental methods and high spatial and time resolution are needed. Here, we report a detailed investigation of the formation and transformation process of calcium phosphate mineral within an alginate hydrogel matrix. A combination of optical microscopy, confocal Raman microspectroscopy and electron microscopy was used to investigate the spatial distribution, morphology and crystal phase of the calcium phosphate mineral, as well as to study transformation of the mineral phases during the hydrogel mineralization process and upon incubation in a simulated body fluid. It was found, that under the conditions used in this work, mineral initially formed as a metastable amorphous calcium phosphate phase (ACP). The ACP particles had a distinctive spherical morphology and transformed within minutes into brushite in the presence of brushite seed crystals or into octacalcium phosphate, when no seeds were present in the hydrogel matrix. Incubation of brushite-alginate composites in simulated body fluid resulted in formation of hydroxyapatite. The characterization strategy presented here allows for non-destructive, in situ observation of mineralization processes in optically transparent hydrogels with little to no sample preparation. STATEMENT OF SIGNIFICANCE The precipitation and transformations of calcium phosphates (CaP) is a complex process, where both formation kinetics and the stability of different mineral phases control the outcome. This situation is even more complex if CaP is precipitated in a hydrogel matrix, where one can expect the organic matrix to modulate crystallization by introducing supersaturation gradients or changing the nucleation and growth kinetics of crystals. In this study we apply a range of characterization techniques to study the mineral formation and transformations of CaP within an alginate matrix with spatiotemporal resolution. It demonstrates how a detailed investigation of the mineral precipitation and transformations can aid in the future rational design of hydrogel-based materials for bone tissue engineering and studies of biomineralization processes.
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Affiliation(s)
- Sindre H Bjørnøy
- Department of Physics, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - David C Bassett
- Department of Physics, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - Seniz Ucar
- Department of Chemical Engineering, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - Berit L Strand
- Department of Biotechnology, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - Jens-Petter Andreassen
- Department of Chemical Engineering, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
| | - Pawel Sikorski
- Department of Physics, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
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39
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Jeong SH, Koh YH, Kim SW, Park JU, Kim HE, Song J. Strong and Biostable Hyaluronic Acid-Calcium Phosphate Nanocomposite Hydrogel via in Situ Precipitation Process. Biomacromolecules 2016; 17:841-51. [PMID: 26878437 DOI: 10.1021/acs.biomac.5b01557] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Hyaluronic acid (HAc) hydrogel exhibits excellent biocompatibility, but it has limited biomedical application due to its poor biomechanical properties as well as too-fast enzymatic degradation. In this study, we have developed an in situ precipitation process for the fabrication of a HAc-calcium phosphate nanocomposite hydrogel, after the formation of the glycidyl methacrylate-conjugated HAc (GMHA) hydrogels via photo-cross-linking, to improve the mechanical and biological properties under physiological conditions. In particular, our process facilitates the rapid incorporation of calcium phosphate (CaP) nanoparticles of uniform size and with minimal agglomeration into a polymer matrix, homogeneously. Compared with pure HAc, the nanocomposite hydrogels exhibit improved mechanical behavior. Specifically, the shear modulus is improved by a factor of 4. The biostability of the nanocomposite hydrogel was also significantly improved compared with that of pure HAc hydrogels under both in vitro and in vivo conditions.
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Affiliation(s)
- Seol-Ha Jeong
- Department of Materials Science and Engineering, Seoul National University , Seoul 151-742, Korea
| | - Young-Hag Koh
- School of Biomedical Engineering, Korea University , Seoul 136-703, Korea
| | - Suk-Wha Kim
- Department of Reconstructive and Plastic Surgery, Seoul National University Hospital , Seoul 110-744, Korea
| | - Ji-Ung Park
- Department of Plastic and Reconstructive Surgery, Seoul National University Boramae Hospital , Seoul 156-707, Korea
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University , Seoul 151-742, Korea.,Biomedical Implant Convergence Research Center, Advanced Institutes of Convergence Technology , Suwon 443-270, Korea
| | - Juha Song
- Department of Materials Science and Engineering, Seoul National University , Seoul 151-742, Korea.,Biomedical Implant Convergence Research Center, Advanced Institutes of Convergence Technology , Suwon 443-270, Korea
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40
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Du J, Xu S, Feng S, Yu L, Wang J, Liu Y. Tough dual nanocomposite hydrogels with inorganic hybrid crosslinking. SOFT MATTER 2016; 12:1649-1654. [PMID: 26758500 DOI: 10.1039/c5sm02790j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A dual nanocomposite hydrogel with inorganic hybrid crosslinking was fabricated through a simultaneous sol-gel technique and free radical polymerization. Due to the multi-strengthening mechanism of the dual nanocomposite, the hydrogel was super tough and strong with a compressive stress of 32.00 MPa without rupture even at 100% strain, while it exhibited excellent fatigue resistant properties.
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Affiliation(s)
- Juan Du
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, People's Republic of China.
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41
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Bjørnøy SH, Bassett DC, Ucar S, Andreassen JP, Sikorski P. Controlled mineralisation and recrystallisation of brushite within alginate hydrogels. Biomed Mater 2016; 11:015013. [DOI: 10.1088/1748-6041/11/1/015013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Li Z, Su Y, Xie B, Liu X, Gao X, Wang D. A novel biocompatible double network hydrogel consisting of konjac glucomannan with high mechanical strength and ability to be freely shaped. J Mater Chem B 2015; 3:1769-1778. [DOI: 10.1039/c4tb01653j] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel physically linked double-network (DN) hydrogel was prepared by natural polymer KGM and synthetic polymer PAAm. The DN hydrogels exhibit good mechanical properties, cell adhesion properties, and can be freely shaped, making such hydrogels promising for tissue engineering scaffolds.
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Affiliation(s)
- Zhiyong Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Baoquan Xie
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xianggui Liu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xia Gao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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43
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Shi FK, Wang XP, Guo RH, Zhong M, Xie XM. Highly stretchable and super tough nanocomposite physical hydrogels facilitated by the coupling of intermolecular hydrogen bonds and analogous chemical crosslinking of nanoparticles. J Mater Chem B 2015; 3:1187-1192. [DOI: 10.1039/c4tb01654h] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Nanocomposite physical hydrogels fabricated by a one-step polymerization show ultra-extensibility and toughness due to an effective strengthening mechanism.
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Affiliation(s)
- Fu-Kuan Shi
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- PR China
| | - Xi-Ping Wang
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- PR China
| | - Ruo-Hai Guo
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- PR China
| | - Ming Zhong
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- PR China
| | - Xu-Ming Xie
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- PR China
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44
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Tan Y, Wu R, Li H, Ren W, Du J, Xu S, Wang J. Electric field-induced gradient strength in nanocomposite hydrogel through gradient crosslinking of clay. J Mater Chem B 2015; 3:4426-4430. [DOI: 10.1039/c5tb00506j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanocomposite gradient hydrogels with adjustable mechanical strength and network sizes were synthesized by electric field-induced gradient crosslinking polymerization.
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Affiliation(s)
- Yun Tan
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
| | - Ronglan Wu
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
| | - Huili Li
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
| | - Wenchen Ren
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
| | - Juan Du
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
| | - Shimei Xu
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals
- Ministry of Education and Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi
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45
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Maas M, Hess U, Rezwan K. The contribution of rheology for designing hydroxyapatite biomaterials. Curr Opin Colloid Interface Sci 2014. [DOI: 10.1016/j.cocis.2014.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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46
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Li Z, Mi W, Wang H, Su Y, He C. Nano-hydroxyapatite/polyacrylamide composite hydrogels with high mechanical strengths and cell adhesion properties. Colloids Surf B Biointerfaces 2014; 123:959-64. [DOI: 10.1016/j.colsurfb.2014.10.050] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 10/22/2014] [Accepted: 10/25/2014] [Indexed: 11/16/2022]
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47
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Wang C, Shen H, Tian Y, Xie Y, Li A, Ji L, Niu Z, Wu D, Qiu D. Bioactive nanoparticle-gelatin composite scaffold with mechanical performance comparable to cancellous bones. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13061-8. [PMID: 25046034 DOI: 10.1021/am5029582] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Mechanical properties are among the most concerned issues for artificial bone grafting materials. The scaffolds used for bone grafts are either too brittle (glass) or too weak (polymer), and therefore composite scaffolds are naturally expected as the solution. However, despite the intensive studies on composite bone grafting materials, there still lacks a material that could be matched to the natural cancellous bones. In this study, nanosized bioactive particles (BP) with controllable size and good colloidal stability were used to composite with gelatin, forming macroporous scaffolds. It was found that the mechanical properties of obtained composite scaffolds, in terms of elastic modulus, compressive strength, and strain at failure, could match to that of natural cancellous bones. This is ascribed to the good distribution of particle in matrix and strong interaction between particle and gelatin. Furthermore, the incorporation of BPs endues the composite scaffolds with bioactivity, forming HA upon reacting with simulated body fluid (SBF) within days, thus stimulating preosteoblasts attachment, growth, and proliferation in these scaffolds. Together with their good mechanical properties, these composite scaffolds are promising artificial bone grating materials.
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Affiliation(s)
- Chen Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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48
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Bialorucki C, Subramanian G, Elsaadany M, Yildirim-Ayan E. In situ osteoblast mineralization mediates post-injection mechanical properties of osteoconductive material. J Mech Behav Biomed Mater 2014; 38:143-53. [PMID: 25051152 DOI: 10.1016/j.jmbbm.2014.06.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/24/2014] [Accepted: 06/30/2014] [Indexed: 12/14/2022]
Abstract
The objective of this study was to understand the temporal relationship between in situ generated calcium content (mineralization) and the mechanical properties of an injectable orthobiologic bone-filler material. Murine derived osteoblast progenitor cells were differentiated using osteogenic factors and encapsulated within an injectable polycaprolactone nanofiber-collagen composite scaffold (PN-COL +osteo) to evaluate the effect of mineralization on the mechanical properties of the PN-COL scaffold. A comprehensive study was conducted using both an experimental and a predictive analytical mechanical analysis for mechanical property assessment as well as an extensive in vitro biological analysis for in situ mineralization. Cell proliferation was evaluated using a PicoGreen dsDNA quantification assay and in situ mineralization was analyzed using both an alkaline phosphatase (ALP) assay and an Alizarin Red stain-based assay. Mineralized matrix formation was further evaluated using energy dispersive x-ray spectroscopy (EDS) and visualized using SEM and histological analyses. Compressive mechanical properties of the PN-COL scaffolds were determined using a confined compression stress-relaxation protocol and the obtained data was fit to the standard linear solid viscoelastic material mathematical model to demonstrate a relationship between increased in situ mineralization and the mechanical properties of the PN-COL scaffold. Cell proliferation was constant over the 21 day period. ALP activity and calcium concentration significantly increased at day 14 and 21 as compared to PN-COL -osteo with undifferentiated osteoblast progenitor cells. Furthermore, at day 21 EDS, SEM and von Kossa histological staining confirmed mineralized matrix formation within the PN-COL scaffolds. After 21 days, compressive modulus, peak stress, and equilibrium stress demonstrate significant increases of 3.4-fold, 3.3-fold, and 4.0-fold respectively due to in situ mineralization. Viscoelastic parameters calculated through the standard linear solid mathematical model fit to the stress-relaxation data also indicate improved mechanical properties after in situ mineralization. This investigation clearly demonstrates that in situ mineralization can increase the mechanical properties of an injectable orthobiologic scaffold and can possibly guide the design of an effective osteoconductive injectable material.
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Affiliation(s)
- Callan Bialorucki
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA
| | - Gayathri Subramanian
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA
| | - Mostafa Elsaadany
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA
| | - Eda Yildirim-Ayan
- Department of Bioengineering, College of Engineering, University of Toledo, Toledo, OH 43606, USA; Department of Orthopaedic Surgery, University of Toledo Medical Center, Toledo, OH 43614, USA.
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49
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Zhao X. Multi-scale multi-mechanism design of tough hydrogels: building dissipation into stretchy networks. SOFT MATTER 2014; 10:672-87. [PMID: 24834901 PMCID: PMC4040255 DOI: 10.1039/c3sm52272e] [Citation(s) in RCA: 608] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
As swollen polymer networks in water, hydrogels are usually brittle. However, hydrogels with high toughness play critical roles in many plant and animal tissues as well as in diverse engineering applications. Here we review the intrinsic mechanisms of a wide variety of tough hydrogels developed over the past few decades. We show that tough hydrogels generally possess mechanisms to dissipate substantial mechanical energy but still maintain high elasticity under deformation. The integrations and interactions of different mechanisms for dissipating energy and maintaining elasticity are essential to the design of tough hydrogels. A matrix that combines various mechanisms is constructed for the first time to guide the design of next-generation tough hydrogels. We further highlight that a particularly promising strategy for the design is to implement multiple mechanisms across multiple length scales into nano-, micro-, meso-, and macro-structures of hydrogels.
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Affiliation(s)
- Xuanhe Zhao
- Soft Active Materials Laboratory, Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA.
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50
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Li Z, Wen T, Su Y, Wei X, He C, Wang D. Hollow hydroxyapatite spheres fabrication with three-dimensional hydrogel template. CrystEngComm 2014. [DOI: 10.1039/c3ce42517g] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Flower-like porous hollow HAp spheres were obtained by diffusion of phosphate ions into PAAm hydrogels containing calcium ions by both an electrophoresis approach and an ion diffusion method.
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Affiliation(s)
- Zhiyong Li
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, PR China
| | - Tao Wen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, PR China
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, PR China
| | - Xiaoxiao Wei
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, PR China
| | - Changcheng He
- College of Chemistry
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- Beijing Normal University
- Beijing 100875, PR China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, PR China
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