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Sun W, Gao C, Liu H, Zhang Y, Guo Z, Lu C, Qiao H, Yang Z, Jin A, Chen J, Dai Q, Liu Y. Scaffold-Based Poly(Vinylidene Fluoride) and Its Copolymers: Materials, Fabrication Methods, Applications, and Perspectives. ACS Biomater Sci Eng 2024; 10:2805-2826. [PMID: 38621173 DOI: 10.1021/acsbiomaterials.3c01989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Tissue engineering involves implanting grafts into damaged tissue sites to guide and stimulate the formation of new tissue, which is an important strategy in the field of tissue defect treatment. Scaffolds prepared in vitro meet this requirement and are able to provide a biochemical microenvironment for cell growth, adhesion, and tissue formation. Scaffolds made of piezoelectric materials can apply electrical stimulation to the tissue without an external power source, speeding up the tissue repair process. Among piezoelectric polymers, poly(vinylidene fluoride) (PVDF) and its copolymers have the largest piezoelectric coefficients and are widely used in biomedical fields, including implanted sensors, drug delivery, and tissue repair. This paper provides a comprehensive overview of PVDF and its copolymers and fillers for manufacturing scaffolds as well as the roles in improving piezoelectric output, bioactivity, and mechanical properties. Then, common fabrication methods are outlined such as 3D printing, electrospinning, solvent casting, and phase separation. In addition, the applications and mechanisms of scaffold-based PVDF in tissue engineering are introduced, such as bone, nerve, muscle, skin, and blood vessel. Finally, challenges, perspectives, and strategies of scaffold-based PVDF and its copolymers in the future are discussed.
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Affiliation(s)
- Wenbin Sun
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Chuang Gao
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Huazhen Liu
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Yi Zhang
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Zilong Guo
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Chunxiang Lu
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Hao Qiao
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Zhiqiang Yang
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Aoxiang Jin
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Jianan Chen
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Qiqi Dai
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Yuanyuan Liu
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- School of Medicine, Shanghai University, Shanghai 200444, China
- Wenzhou Institute of Shanghai University, Wenzhou, 325000, China
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Panda AK, Basu B. Regenerative bioelectronics: A strategic roadmap for precision medicine. Biomaterials 2023; 301:122271. [PMID: 37619262 DOI: 10.1016/j.biomaterials.2023.122271] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/30/2023] [Accepted: 08/06/2023] [Indexed: 08/26/2023]
Abstract
In the past few decades, stem cell-based regenerative engineering has demonstrated its significant potential to repair damaged tissues and to restore their functionalities. Despite such advancement in regenerative engineering, the clinical translation remains a major challenge. In the stance of personalized treatment, the recent progress in bioelectronic medicine likewise evolved as another important research domain of larger significance for human healthcare. Over the last several years, our research group has adopted biomaterials-based regenerative engineering strategies using innovative bioelectronic stimulation protocols based on either electric or magnetic stimuli to direct cellular differentiation on engineered biomaterials with a range of elastic stiffness or functional properties (electroactivity/magnetoactivity). In this article, the role of bioelectronics in stem cell-based regenerative engineering has been critically analyzed to stimulate futuristic research in the treatment of degenerative diseases as well as to address some fundamental questions in stem cell biology. Built on the concepts from two independent biomedical research domains (regenerative engineering and bioelectronic medicine), we propose a converging research theme, 'Regenerative Bioelectronics'. Further, a series of recommendations have been put forward to address the current challenges in bridging the gap in stem cell therapy and bioelectronic medicine. Enacting the strategic blueprint of bioelectronic-based regenerative engineering can potentially deliver the unmet clinical needs for treating incurable degenerative diseases.
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Affiliation(s)
- Asish Kumar Panda
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bengaluru, 560012, India
| | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bengaluru, 560012, India; Centre for Biosystems Science and Engineering, Indian Institute of Science, Bengaluru, 560012, India.
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Chen Y, Chen Y, Xiong X, Cui R, Zhang G, Wang C, Xiao D, Qu S, Weng J. Hybridizing gellan/alginate and thixotropic magnesium phosphate-based hydrogel scaffolds for enhanced osteochondral repair. Mater Today Bio 2022; 14:100261. [PMID: 35494405 PMCID: PMC9046447 DOI: 10.1016/j.mtbio.2022.100261] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/26/2022] [Accepted: 04/10/2022] [Indexed: 11/16/2022]
Abstract
Osteochondral defects include the damage of cartilage and subchondral bone, which are still clinical challenges. The general replacements are difficult to simultaneously repair cartilage and subchondral bone due to their various requirements. Moreover, appropriate printable bioactive materials were needed for 3D bioprinting personalized scaffolds for osteochondral repairing. Herein, the novel hydrogel was developed by hybridizing the alginate sodium (SA) and gellan gum (GG) with the inorganic thixotropic magnesium phosphate-based gel (TMP-BG) in the pre-crosslinking of Mg2+ to enhance osteochondral repairing. SA-GG/TMP-BG hybrid hydrogels possessed controllable rheological, injectable, mechanical properties and porosities by tuning their ratio. The shear-thinning of SA-GG/TMP-BG was responsible for its excellent injectability. SA-GG/TMP-BG hybrid hydrogels displayed good cell compatibility, on which MG-63 and BMSCs cells attached and spread well with the high proliferation and up-regulated osteogenic genes. In addition, the inorganic TMP-BG gel hybridized with SA-GG hydrogel released Mg2+ was conducive to recruiting BMSCs and promoting the osteogenic and chondrogenic differentiation of BMSCs. Histological results confirmed that SA-GG/TMP6040 significantly promoted the osteogenesis of subchondral bone and then further facilitated the cartilage repairing after being implanted in osteochondral defects of rabbits for 6 and 12 weeks. Our finding revealed that the inorganic TMP-BG endowed the excellent osteogenic activity of the hybrid hydrogels, which played a key role in successful osteochondral repairing. The newly SA-GG/TMP-BG hybrid hydrogels appeared to be promising materials for osteochondral repairing and the further 3D bioprinting.
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