Upregulation of human selenoprotein H in murine hippocampal neuronal cells promotes mitochondrial biogenesis and functional performance.

Upregulation of human selenoprotein H in murine hippocampal neuronal cells promotes mitochondrial biogenesis and functional performance.
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DOI:
10.1016/j.mito.2010.07.007
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发表时间:
2011-01
期刊:
影响因子:
4.4
通讯作者:
Li, P. Andy
Li, P. Andy
中科院分区:
生物学3区
文献类型:
--
作者:
Mendelev, Natalia;Mehta, Suresh L.;Witherspoon, Sam;He, Qingping;Sexton, Jonathan Z.;Li, P. Andy

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硒蛋白H(SelH)基因的过表达通过阻断线粒体启动的凋亡性细胞死亡途径对UVB诱导的神经元细胞死亡提供神经保护。本研究探讨了SelH对线粒体生物合成和线粒体功能的影响。结果表明,SelH基因在神经元HT 22细胞中的过表达可显著增加线粒体生物合成调节因子、核呼吸因子1(NRF-1)、过氧化物酶体增殖物激活受体辅激活因子1 α(PGC-1α)和线粒体转录因子A(Tfam)的水平。线粒体细胞色素c含量升高,质量增加,呼吸作用增强。SelH转染改善了紫外线B(UVB)诱导的线粒体生物发生标记物的抑制和线粒体膜电位的去极化。SelH的过表达促进线粒体生物合成并改善线粒体功能性能。
Overexpression of selenoprotein H (SelH) gene provides neuroprotection in neurons against UVB-induced cell death by blocking the mitohcondria-initiated apoptotic cell death pathway. This study examined the effects of SelH on mitochondrial biogenesis and mitochondrial function. The results demonstrated that overexpression of SelH gene in neuronal HT22 cells significantly increased the levels of mitochondrial biogenesis regulators, nuclear respiratory factor-1 (NRF-1), peroxisome proliferator-activated receptor- coactivator-1 alpha (PGC-1α) and mitochondrial transcription factor A (Tfam). Mitochondrial cytochrome c content was elevated, mass was increased and respiration was enhanced. SelH transfection ameliorated ultra violet B (UVB)-induced suppression of mitochondrial biogenesis markers and depolarization of mitochondrial membrane potential. Overexpression of SelH promotes mitochondrial biogenesis and improves mitochondrial functional performance.
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