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Huang EE, Zhang N, Ganio EA, Shen H, Li X, Ueno M, Utsunomiya T, Maruyama M, Gao Q, Su N, Yao Z, Yang F, Gaudillière B, Goodman SB. Differential dynamics of bone graft transplantation and mesenchymal stem cell therapy during bone defect healing in a murine critical size defect. J Orthop Translat 2022; 36:64-74. [PMID: 35979174 PMCID: PMC9357712 DOI: 10.1016/j.jot.2022.05.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/22/2022] [Accepted: 05/27/2022] [Indexed: 10/24/2022] Open
Abstract
Background A critical size bone defect is a clinical scenario in which bone is lost or excised due to trauma, infection, tumor, or other causes, and cannot completely heal spontaneously. The most common treatment for this condition is autologous bone grafting to the defect site. However, autologous bone graft is often insufficient in quantity or quality for transplantation to these large defects. Recently, tissue engineering methods using mesenchymal stem cells (MSCs) have been proposed as an alternative treatment. However, the underlying biological principles and optimal techniques for tissue regeneration of bone using stem cell therapy have not been completely elucidated. Methods In this study, we compare the early cellular dynamics of healing between bone graft transplantation and MSC therapy in a murine chronic femoral critical-size bone defect. We employ high-dimensional mass cytometry to provide a comprehensive view of the differences in cell composition, stem cell functionality, and immunomodulatory activity between these two treatment methods one week after transplantation. Results We reveal distinct cell compositions among tissues from bone defect sites compared with original bone graft, show active recruitment of MSCs to the bone defect sites, and demonstrate the phenotypic diversity of macrophages and T cells in each group that may affect the clinical outcome. Conclusion Our results provide critical data and future directions on the use of MSCs for treating critical size defects to regenerate bone.Translational Potential of this article: This study showed systematic comparisons of the cellular and immunomodulatory profiles among different interventions to improve the healing of the critical-size bone defect. The results provided potential strategies for designing robust therapeutic interventions for the unmet clinical need of treating critical-size bone defects.
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Affiliation(s)
- Elijah Ejun Huang
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Ning Zhang
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Edward A. Ganio
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA, USA
| | - Huaishuang Shen
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Xueping Li
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Masaya Ueno
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Takeshi Utsunomiya
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Masahiro Maruyama
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Qi Gao
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Ni Su
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Zhenyu Yao
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | - Fan Yang
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Brice Gaudillière
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA, USA
| | - Stuart B. Goodman
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
- Department of Bioengineering, Stanford University, Stanford, CA, USA
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