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Sokolova AV, Domnina AP, Mikhailov VM. Accumulation of Dystrophin-Positive Muscle Fibers and Improvement of Neuromuscular Junctions in mdx Mouse Muscles after Bone Marrow Transplantation under Different Conditions. Int J Mol Sci 2023; 24:ijms24108892. [PMID: 37240237 DOI: 10.3390/ijms24108892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/13/2023] [Accepted: 05/14/2023] [Indexed: 05/28/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe muscular disorder caused by mutations in the dystrophin gene. It leads to respiratory and cardiac failure and premature death at a young age. Although recent studies have greatly deepened the understanding of the primary and secondary pathogenetic mechanisms of DMD, an effective treatment remains elusive. In recent decades, stem cells have emerged as a novel therapeutic product for a variety of diseases. In this study, we investigated nonmyeloablative bone marrow cell (BMC) transplantation as a method of cell therapy for DMD in an mdx mouse model. By using BMC transplantation from GFP-positive mice, we confirmed that BMCs participate in the muscle restoration of mdx mice. We analyzed both syngeneic and allogeneic BMC transplantation under different conditions. Our data indicated that 3 Gy X-ray irradiation with subsequent BMC transplantation improved dystrophin synthesis and the structure of striated muscle fibers (SMFs) in mdx mice as well as decreasing the death rate of SMFs. In addition, we observed the normalization of neuromuscular junctions (NMJs) in mdx mice after nonmyeloablative BMC transplantation. In conclusion, we demonstrated that nonmyeloablative BMC transplantation could be considered a method for DMD treatment.
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Affiliation(s)
| | - Alisa P Domnina
- Institute of Cytology, Russian Academy of Sciences, 194064 Saint-Petersburg, Russia
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Zhao C, Bartock M, Jia B, Shah N, Claxton DF, Wirk B, Rakszawski KL, Nickolich MS, Naik SG, Rybka WB, Ehmann WCC, Hohl RJ, Valentin J, Bernas-Peterson M, Gerber EM, Zimmerman M, Mierski JA, Mineishi S, Zheng H. Post-transplant cyclophosphamide alters immune signatures and leads to impaired T cell reconstitution in allogeneic hematopoietic stem cell transplant. J Hematol Oncol 2022; 15:64. [PMID: 35590334 PMCID: PMC9118756 DOI: 10.1186/s13045-022-01287-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/12/2022] [Indexed: 11/24/2022] Open
Abstract
Despite the increased usage of post-transplant cyclophosphamide (PTCy) in allogeneic hematopoietic stem cell transplantation (allo-HSCT), our knowledge of immune reconstitution post-allo-HSCT in the setting of PTCy is limited. Adequate immune reconstitution is the key to a successful transplant. In this study, we aim to investigate the effect of PTCy on the reconstitution of each immune component; more focus was placed on the immunophenotype and functions of T cells. Using blood samples from patients who underwent allo-HSCT under regimens containing PTCy (n = 23) versus those who received no PTCy (n = 14), we examined the impact of PTCy on the post-transplant immune response. We demonstrated a distinct T cell immune signature between PTCy versus non-PTCy group. PTCy significantly delayed T cell reconstitution and affected the T cell subsets by increasing regulatory T cells (Treg) while reducing naïve T cells. In addition, we observed remarkable enhancement of multiple inhibitory receptors (TIGIT, PD-1, TIM-3, CD38, CD39) on both CD4+ and CD8+ T cells on day 30 post-transplantation in patients who received PTCy. Importantly, upregulation of PD-1 on CD8 T cells was persistent through day 180 and these T cells were less functional, manifested by reduced cytokine production upon anti-CD3/CD28 stimulation. Furthermore, we found a significant correlation of T cell immune phenotypes to clinical outcome (disease relapse and GVHD) in patients who received PTCy. Our novel findings provide critical information to understand the mechanism of how PTCy impacts immune reconstitution in allo-HSCT and may subsequently lead to optimization of our clinical practice using this treatment.
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Affiliation(s)
- Chenchen Zhao
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Matthew Bartock
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Bei Jia
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Neal Shah
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - David F Claxton
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Baldeep Wirk
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Kevin L Rakszawski
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Myles S Nickolich
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Seema G Naik
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Witold B Rybka
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - W Christopher C Ehmann
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Raymond J Hohl
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Jessica Valentin
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Michelle Bernas-Peterson
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Emily M Gerber
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Michele Zimmerman
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Joseph A Mierski
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Shin Mineishi
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA
| | - Hong Zheng
- Penn State Cancer Institute, Penn State University College of Medicine, 500 University Dr, PO Box 850, Hershey, PA, 17033, USA.
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