针对Ca2+储存介导的Ca2+释放和储存操作的进入的联合治疗减少了二次轴突退化,并改善了SCI后的功能结果
Emma Jones1, Spencer O Ames1, Jesse Brooks1
1Kentucky Spinal Cord Injury Research Center, University of Louisville School of Medicine, Louisville, KY 40202, USA.
Experimental neurology
|February 5, 2025
概括
通过STIM1/Orai解和IP3R抑制抑制储存运行的入 (SOCE),可以改善脊髓损伤 (SCI) 后的神经恢复和轴突生存. 这种新的治疗方法针对二次轴突退化,以获得更好的结果.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 储存运行的入 (SOCE) 对细胞平衡至关重要,但其失调有助于神经系统疾病和中枢神经系统创伤.
- 连接不受控制的SOCE与神经损伤的确切机制,特别是脊髓损伤 (SCI),仍然不完全理解.
- 电流相互作用分子 (STIM) 和Orai通道是SOCE的关键调节者,它们在SCI病原发生中的作用需要进一步研究.
研究的目的:
- 调查神经元STIM1和SOCE在性脊髓损伤 (SCI) 后神经恢复中的作用.
- 确定是否抑制SOCE,特别是通过向STIM1/Orai相互作用或IP3R,可以增强SCI后的恢复和轴突生存.
- 评估一种结合STIM/Orai功能解和IP3R抑制用于SCI治疗的新型治疗策略.
主要方法:
- 利用条件神经元Stim1淘汰赛 (Stim1KO) 的小鼠 (雄性和雌性) 来评估神经元STIM1删除对SCI结果的影响.
- 给药的药理学药物:2-APB (IP3R抑制剂) 和DPB162-AE (STIM/Orai解器) 在各种组合下给Thy1YFP+和C57BL/6J小鼠,其次是SCI.
- 采用肠道显微镜,行为评估和免疫组织化学分析,以评估轴突存活率,神经功能,星球化和免疫细胞透在受伤后的不同时间点.
主要成果:
- 神经元特异性Stim1KO显著增加了SCI后的轴突生存率.
- STIM1/Orai的药理解,有或没有IP3R抑制,在受伤后24小时增强了轴突存活率,在雄性和雌性小鼠中.
- 使用DPB162-AE和2-APB的联合治疗改善了长期的神经恢复,促进了轴突节约,增加了星化,并减少了受伤部位的微质/巨质密度.
结论:
- 神经性STIM1在SCI后的二次轴突退化中发挥着关键作用.
- 通过功能地解STIM/Orai通道和抑制IP3R来准SOCE是一个有希望的治疗策略,可以改善脊髓损伤后的结果.
- DPB162-AE和2-APB的组合提供了一种新的方法来减轻神经元损伤并促进SCI的恢复.
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