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首页> 外文期刊>Journal of stroke and cerebrovascular diseases: The official journal of National Stroke Association >Bone Marrow Stromal Cell Transplantation Drives Molecular Switch from Autophagy to the Ubiquitin-Proteasome System in Ischemic Stroke Mice
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Bone Marrow Stromal Cell Transplantation Drives Molecular Switch from Autophagy to the Ubiquitin-Proteasome System in Ischemic Stroke Mice

机译:骨髓基质细胞移植驱动缺血性卒中小鼠中的泛素 - 蛋白酶体系的分子切换

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摘要

Background: Bone marrow stromal cell (BMSC) transplantation is a promising therapeutic approach for cerebral ischemia, as it elicits multiple neuroprotective effects. However, it remains unclear how BMSC transplantation modulates the ubiquitin-proteasome system (UPS) and autophagy under cerebral ischemia. Methods: In the present study, an intermediate level of cerebral ischemia (30 minutes) was chosen to examine the effect of BMSC transplantation on the molecular switch regulating UPS and autophagy. BMSC or vehicle was stereotactically injected into the penumbra 15 minutes after sham operation or transient middle cerebral artery occlusion (tMCAO). Results: Thirty minutes of tMCAO artery occlusion significantly increased TUNEL-, ubiquitin-, and p62-positive cells (which peaked at 72 hours, 2 hours, and 2 hours after reperfusion, respectively) and ratios of both BAG3/BAG1 and LC3-II/LC3-I at 24 hours after reperfusion. However, intracerebral injection of BMSCs significantly reduced infarct volume and numbers of TUNEL- and p62-positive cells, and improved BAG3/BAG1 and LC3-II/LC3-I ratios. In addition, observed increases in ubiquitin-positive cells 2 hours after reperfusion were slightly suppressed by BMSC transplantation. Conclusions: These data suggest a protective role of BMSC transplantation, which drove the molecular switch from autophagy to UPS in a murine model of ischemic stroke.
机译:背景:骨髓基质细胞(BMSC)移植具有多种神经保护作用,是治疗脑缺血的一种有前途的方法。然而,目前尚不清楚BMSC移植如何在脑缺血条件下调节泛素-蛋白酶体系统(UPS)和自噬。方法:在本研究中,选择中等程度的脑缺血(30分钟),观察骨髓基质细胞移植对调节UPS和自噬的分子开关的影响。假手术或暂时性大脑中动脉闭塞(tMCAO)15分钟后,将BMSC或载体立体定向注射到半影区。结果:tMCAO动脉阻断30分钟后,TUNEL、泛素和p62阳性细胞(分别在再灌注后72小时、2小时和2小时达到峰值)以及再灌注后24小时BAG3/BAG1和LC3-II/LC3-I的比率显著增加。然而,脑内注射BMSCs可显著减少梗死体积和TUNEL-和p62阳性细胞的数量,并改善BAG3/BAG1和LC3-II/LC3-I比率。此外,再灌注2小时后观察到泛素阳性细胞的增加被BMSC移植轻微抑制。结论:这些数据表明BMSC移植具有保护作用,在小鼠缺血性中风模型中,BMSC移植促使分子从自噬转变为UPS。

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  • 作者单位

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

    Okayama Univ Dept Neurol Dent &

    Pharmaceut Sci Grad Sch Med Kita Ku 2-5-1 Shikata Cho Okayama;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 神经病学与精神病学;
  • 关键词

    Autophagy; bone marrow stromal cells; transient middle cerebral artery occlusion; ubiquitin-proteasome system;

    机译:自噬;骨髓基质细胞;短暂性大脑中动脉闭塞;泛素-蛋白酶体系统;

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