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Ganabady K, Contessi Negrini N, Scherba JC, Nitschke BM, Alexander MR, Vining KH, Grunlan MA, Mooney DJ, Celiz AD. High-Throughput Screening of Thiol-ene Click Chemistries for Bone Adhesive Polymers. ACS APPLIED MATERIALS & INTERFACES 2023; 15:50908-50915. [PMID: 37905511 PMCID: PMC10636719 DOI: 10.1021/acsami.3c12072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 11/02/2023]
Abstract
Metal surgical pins and screws are employed in millions of orthopedic surgical procedures every year worldwide, but their usability is limited in the case of complex, comminuted fractures or in surgeries on smaller bones. Therefore, replacing such implants with a bone adhesive material has long been considered an attractive option. However, synthesizing a biocompatible bone adhesive with a high bond strength that is simple to apply presents many challenges. To rapidly identify candidate polymers for a biocompatible bone adhesive, we employed a high-throughput screening strategy to assess human mesenchymal stromal cell (hMSC) adhesion toward a library of polymers synthesized via thiol-ene click chemistry. We chose thiol-ene click chemistry because multifunctional monomers can be rapidly cured via ultraviolet (UV) light while minimizing residual monomer, and it provides a scalable manufacturing process for candidate polymers identified from a high-throughput screen. This screening methodology identified a copolymer (1-S2-FT01) composed of the monomers 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TATATO) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP), which supported highest hMSC adhesion across a library of 90 polymers. The identified copolymer (1-S2-FT01) exhibited favorable compressive and tensile properties compared to existing commercial bone adhesives and adhered to bone with adhesion strengths similar to commercially available bone glues such as Histoacryl. Furthermore, this cytocompatible polymer supported osteogenic differentiation of hMSCs and could adhere 3D porous polymer scaffolds to the bone tissue, making this polymer an ideal candidate as an alternative bone adhesive with broad utility in orthopedic surgery.
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Affiliation(s)
- Kavya Ganabady
- Department
of Bioengineering, Imperial College London, London W12 0BZ, U.K.
| | | | - Jacob C. Scherba
- Wyss
Institute for Biologically Inspired Engineering and Harvard John A.
Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Brandon M. Nitschke
- Department
of Biomedical Engineering, Texas A&M
University, College
Station, Texas 77843-3120, United States
| | | | - Kyle H. Vining
- School
of Dental Medicine and Department of Materials Science, School of
Engineering and Applied Science, University
of Pennsylvania, Philadelphia, Pennsylvania 19104-6030, United States
| | - Melissa A. Grunlan
- Department
of Biomedical Engineering, Texas A&M
University, College
Station, Texas 77843-3120, United States
| | - David J. Mooney
- Wyss
Institute for Biologically Inspired Engineering and Harvard John A.
Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Adam D. Celiz
- Department
of Bioengineering, Imperial College London, London W12 0BZ, U.K.
- Francis
Crick Institute, London NW1 1AT, U.K.
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Liao Z, Zhang L, Lan W, Du J, Hu Y, Wei Y, Hang R, Chen W, Huang D. In situ titanium phosphate formation on a titanium implant as ultrahigh bonding with nano-hydroxyapatite coating for rapid osseointegration. Biomater Sci 2023; 11:2230-2242. [PMID: 36748838 DOI: 10.1039/d2bm01886a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Titanium (Ti) has been widely used as a dental implant material due to its excellent mechanical property and good biocompatibility. However, its poor biological activity severely limits its ability to bond with bony tissues. To ameliorate this situation, a preparation method of ultra-high bonding nano-hydroxyapatite (n-HA) coating on the Ti surface is urgently needed. Here, Ti phosphate/n-HA (TiP-Ca) composite coatings with ultra-high bonding were prepared by a two-step hydrothermal treatment. The TiP coating was first formed in situ on the pure Ti substrate and then n-HA crystals further grew on the TiP surface. The formation mechanism of composite coating and reasons for increased bonding strength were systematically investigated. The results show that the TiP-Ca coating remains stable and exhibits an ultra-high bonding strength with the Ti implant (up to 783.30 ± 207.46 N). An effective solution was designed to address the problems of easy peel off. Cell experiments showed that TiP-Ca could promote the adhesion of MC3T3-E1 and expression of OCN, Runx2, and ALP. In vivo evaluation further confirmed that the TiP-Ca composite coating significantly enhanced osseointegration. The designed coating shows great potential in clinical application of implants.
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Affiliation(s)
- Ziming Liao
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Luyao Zhang
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Weiwei Lan
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. .,Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
| | - Jingjing Du
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. .,Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China.,Analytical & Testing Center, Hainan University, Haikou 570028, China
| | - Yinchun Hu
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. .,Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
| | - Yan Wei
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. .,Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
| | - Ruiqiang Hang
- Shanxi Key Laboratory of Biomedical Metal Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Weiyi Chen
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. .,Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
| | - Di Huang
- Research Center for Nano-Biomaterials & Regenerative Medicine, Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. .,Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030060, China
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3
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Gao M, He D, Cui L, Ma L, Tan Z, Zhou Z, Guo X. Investigation on the Microstructure and Mechanical Properties of the Ti-Ta Alloy with Unmelted Ta Particles by Laser Powder Bed Fusion. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2208. [PMID: 36984086 PMCID: PMC10051491 DOI: 10.3390/ma16062208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
Titanium-tantalum (Ti-Ta) alloy has excellent biomechanical properties with high strength and low Young's modulus, showing great application potential in the biomedical industry. In this study, Ti-Ta alloy samples were prepared by laser powder bed fusion (LPBF) technology with mixed pure 75 wt.% Ti and 25 wt.% Ta powders as the feedstock. The maximum relative density of Ti-Ta samples prepared by LPBF reached 99.9%. It is well-accepted that four nonequilibrium phases, namely, α', α″ and metastable β phase exist in Ti-Ta alloys. The structure of α', α″ and β are hexagonal close-packed (HCP), base-centered orthorhombic (BCO) and body-centered cubic (BCC), respectively. X-ray Diffraction (XRD) analysis showed that the α' phase transformed to the α″ phase with the increase of energy density. The lamellar α'/α″ phases and the α″ twins were generated in the prior β phase. The microstructure and mechanical properties of the Ti-Ta alloy were optimized with different LPBF processing parameters. The samples prepared by LPBF energy density of 381 J/mm3 had a favorable ultimate strength (UTS) of 1076 ± 2 MPa and yield strength of 795 ± 16 MPa. The samples prepared by LPBF energy density of 76 had excellent ductility, with an elongation of 31% at fracture.
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Affiliation(s)
- Mu Gao
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Dingyong He
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
- Beijing Engineering Research Center of Eco-Materials and LCA, Beijing 100124, China
| | - Li Cui
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Lixia Ma
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Zhen Tan
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Zheng Zhou
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Xingye Guo
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
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Sigston EAW. How 3D Printing Is Reshaping Translational Research. Front Bioeng Biotechnol 2021; 9:640611. [PMID: 34957060 PMCID: PMC8703123 DOI: 10.3389/fbioe.2021.640611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 11/23/2021] [Indexed: 11/13/2022] Open
Abstract
"Translational Research" has traditionally been defined as taking basic scientific findings and developing new diagnostic tools, drugs, devices and treatment options for patients, that are translated into practice, reach the people and populations for whom they are intended and are implemented correctly. The implication is of a unidirectional flow from "the bench to bedside". The rapidly emergent field of additive manufacturing (3D printing) is contributing to a major shift in translational medical research. This includes the concept of bidirectional or reverse translation, early collaboration between clinicians, bio-engineers and basic scientists, and an increasingly entrepreneurial mindset. This coincides with, and is strongly complemented by, the rise of systems biology. The rapid pace at which this type of translational research can occur brings a variety of potential pitfalls and ethical concerns. Regulation surrounding implantable medical devices is struggling to keep up. 3D printing has opened the way for personalization which can make clinical outcomes hard to assess and risks putting the individual before the community. In some instances, novelty and hype has led to loss of transparency of outcomes with dire consequence. Collaboration with commercial partners has potential for conflict of interest. Nevertheless, 3D printing has dramatically changed the landscape of translational research. With early recognition and management of the potential risks, the benefits of reshaping the approach to translational research are enormous. This impact will extend into many other areas of biomedical research, re-establishing that science is more than a body of research. It is a way of thinking.
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Affiliation(s)
- Elizabeth A W Sigston
- Monash Institute of Medical Engineering, Monash University, Melbourne, VIC, Australia.,Department of Surgery, School of Clinical Sciences at Monash Health, Monash University Melbourne, Melbourne, VIC, Australia.,Department of Otolaryngology, Head and Neck Surgery, Monash Health, Melbourne, VIC, Australia
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