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Dai X, Yuan M, Yang Y, Dang M, Yang J, Shi J, Liu D, Li M, Yao H, Fei W. Dual cross-linked COL1/HAp bionic gradient scaffolds containing human amniotic mesenchymal stem cells promote rotator cuff tendon-bone interface healing. BIOMATERIALS ADVANCES 2024; 158:213799. [PMID: 38364326 DOI: 10.1016/j.bioadv.2024.213799] [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: 09/06/2023] [Revised: 01/17/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024]
Abstract
The tendon-bone interface heals through scar tissue, while the lack of a natural interface gradient structure and collagen fibre alignment leads to the occurrence of retearing. Therefore, the promotion of tendon healing has become the focus of regenerative medicine. The purpose of this study was to develop a gradient COL1/ hydroxyapatite (HAp) biomaterial loaded with human amniotic mesenchymal stem cells (hAMSCs). The performance of common cross-linking agents, Genipin, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide (EDC/NHS), and dual cross-linked materials were compared to select the best cross-linking mechanism to optimize the biological and mechanical properties of the scaffold. The optimal COL1/HAp-loaded with hAMSCs were implanted into the tendon-bone rotator cuff interfaces in rats and the effect on the tendon-bone healing was assessed by micro-CT, histological analysis, and biomechanical properties. The results showed that Genipin and EDC/NHS dual cross-linked COL1/HAp had good biological activity and mechanical properties and promoted the proliferation and differentiation of hAMSCs. Animal experiments showed that the group using a scaffold loaded with hAMSCs had excellent continuity and orientation of collagen fibers, increased fibrocartilage and bone formation, and significantly higher biomechanical functions than the control group at the interface at 12 weeks post operation. This study demonstrated that dual cross-linked gradient COL1/HAp-loaded hAMSCs could promote interface healing, thereby providing a feasible strategy for tendon-bone interface regeneration.
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Affiliation(s)
- Xiaomei Dai
- School of Nursing and School of Public Health, Yangzhou University, Yangzhou 225001, PR China; Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China
| | - Meijuan Yuan
- School of Nursing and School of Public Health, Yangzhou University, Yangzhou 225001, PR China; Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China
| | - Yuxia Yang
- Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China; Medical College, Yangzhou University, Yangzhou 225001, PR China
| | - Mengbo Dang
- Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China; Dalian Medical University, Dalian 116044, PR China
| | - Jian Yang
- Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China; Medical College, Yangzhou University, Yangzhou 225001, PR China
| | - Junli Shi
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, PR China
| | - Dianwei Liu
- Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China; Dalian Medical University, Dalian 116044, PR China
| | - Mingjun Li
- Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China; Dalian Medical University, Dalian 116044, PR China
| | - Hang Yao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, PR China.
| | - Wenyong Fei
- Department of Orthopedics and Sports Medicine, Northern Jiangsu People's Hospital, Affiliated to Yangzhou University, Yangzhou 225001, PR China.
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Natural Degradation: Polymer Degradation under Different Conditions. Polymers (Basel) 2022; 14:polym14173595. [PMID: 36080670 PMCID: PMC9459705 DOI: 10.3390/polym14173595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 08/26/2022] [Indexed: 12/03/2022] Open
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