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He Z, Li H, Zhang Y, Gao S, Liang K, Su Y, Du Y, Wang D, Xing D, Yang Z, Lin J. Enhanced bone regeneration via endochondral ossification using Exendin-4-modified mesenchymal stem cells. Bioact Mater 2024; 34:98-111. [PMID: 38186959 PMCID: PMC10770633 DOI: 10.1016/j.bioactmat.2023.12.007] [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: 09/07/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/09/2024] Open
Abstract
Nonunions and delayed unions pose significant challenges in orthopedic treatment, with current therapies often proving inadequate. Bone tissue engineering (BTE), particularly through endochondral ossification (ECO), emerges as a promising strategy for addressing critical bone defects. This study introduces mesenchymal stem cells overexpressing Exendin-4 (MSC-E4), designed to modulate bone remodeling via their autocrine and paracrine functions. We established a type I collagen (Col-I) sponge-based in vitro model that effectively recapitulates the ECO pathway. MSC-E4 demonstrated superior chondrogenic and hypertrophic differentiation and enhanced the ECO cell fate in single-cell sequencing analysis. Furthermore, MSC-E4 encapsulated in microscaffold, effectively facilitated bone regeneration in a rat calvarial defect model, underscoring its potential as a therapeutic agent for bone regeneration. Our findings advocate for MSC-E4 within a BTE framework as a novel and potent approach for treating significant bone defects, leveraging the intrinsic ECO process.
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Affiliation(s)
- Zihao He
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Hui Li
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Yuanyuan Zhang
- Department of Biomedical Engineering, School of Medicine, Tsinghua-Peking Center for Life Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Shuang Gao
- Department of Biomedical Engineering, School of Medicine, Tsinghua-Peking Center for Life Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Kaini Liang
- Department of Biomedical Engineering, School of Medicine, Tsinghua-Peking Center for Life Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Yiqi Su
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Yanan Du
- Department of Biomedical Engineering, School of Medicine, Tsinghua-Peking Center for Life Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Du Wang
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Dan Xing
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Zhen Yang
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Jianhao Lin
- Arthritis Clinic & Research Center, Peking University People's Hospital, Peking University, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
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