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Photobiomodulation therapy facilitates transplantation of dental pulp stem cells for spinal cord injury

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机构： [1]Department of Stomatology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China [2]Department of Stomatology, Fuxing Hospital, Capital Medical University, Beijing 100045, China [3]Department of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing 100053, China

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关键词： Photobiomodulation therapy Dental pulp stem cells Transplantation Spinal cord injury

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While dental pulp stem cells (DPSCs) show therapeutic potential for spinal cord injury (SCI), post-traumatic oxidative stress and mitochondrial dysfunction critically compromise grafted cell survival. Photobiomodulation therapy (PBMT) is a noninvasive approach that may enhance regenerative efficacy. This study investigates whether PBMT improves the survival and neural differentiation of transplanted DPSCs in SCI models.In vitro, the anti-apoptotic effects of PBMT were investigated in H2O2-induced DPSCs injury model via TUNEL staining, flow cytometry, biochemical assays and transmission electron microscopy. In vivo, spinal cord restoration was evaluated using behavioral tests and histological staining, and the survival status and neural differentiation of grafted DPSCs were respectively tracked through bioluminescence imaging and immunofluorescent staining in DPSCs co-expressing luciferin and green fluorescent protein (Luc-GFP-DPSCs) transplanted SCI mice with/without PBMT.PBMT demonstrated protective effects by relieving apoptosis and oxidative stress in engrafted DPSCs in vitro. Furthermore, PBMT-assisted DPSCs transplantation significantly promoted cell survival and neural differentiation, achieving superior functional recovery compared to transplantation alone.PBMT facilitates DPSCs transplantation in SCI through mitigation of oxidative apoptosis and enhancement of grafted cell survival and differentiation.Copyright © 2025. Published by Elsevier B.V.

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出版当年[2025]版：

大类 | 3 区医学

小类 | 4 区肿瘤学

最新[2025]版：

大类 | 3 区医学

小类 | 4 区肿瘤学

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第一作者机构： [1]Department of Stomatology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China

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