Protective effects of Lycium barbarum polysaccharide on 6-OHDA-induced apoptosis in PC12 cells through the ROS-NO pathway.

Protective effects of Lycium barbarum polysaccharide on 6-OHDA-induced apoptosis in PC12 cells through the ROS-NO pathway.
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枸杞多糖通过ROS-NO途径对6-OHDA诱导的PC12细胞凋亡的保护作用。

DOI:
10.3390/molecules20010293
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发表时间:
2014-12-24
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Wen A
Wen A
中科院分区:
其他
文献类型:
--
作者:
Gao K;Liu M;Cao J;Yao M;Lu Y;Li J;Zhu X;Yang Z;Wen A

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氧化应激在帕金森病和其他神经退行性疾病中起着重要作用。枸杞多糖(Lycium barbarum polysaccharides,LBP)是从枸杞果实中提取的主要活性成分,已被证明是一种有效的抗氧化剂。在本研究中,我们研究了LBP对6-羟基多巴胺(6-OHDA)诱导的PC12细胞凋亡的保护作用及其可能的作用机制。我们的数据表明,LBP显着逆转6-OHDA诱导的细胞活力下降,防止6-OHDA诱导的浓缩核的变化,并以剂量依赖性方式降低凋亡细胞的百分比。此外,枸杞多糖还能抑制细胞内活性氧(ROS)和一氧化氮(NO)的积累,降低蛋白结合3-硝基酪氨酸(3-NT)和细胞内游离Ca~(2+)水平,抑制核因子-κ B(NF-κ B)、神经元型一氧化氮合酶(nNOS)和诱导型一氧化氮合酶(iNOS)的过度表达。这些结果表明,LBP防止6-OHDA诱导的PC12细胞凋亡,至少部分通过ROS-NO途径。
Oxidative stress plays an important role in Parkinson’s disease and other neurodegenerative disorders. Lycium barbarum polysaccharides (LBP), the main active ingredients extracted from the fruits of Lycium barbarum L., have been shown to be a potent antioxidant. In the present study, we investigated the protective effects, and the possible mechanism of action of LBP against 6-hydroxydopamine (6-OHDA)-induced apoptosis in PC12 cells. Our data demonstrated that LBP significantly reversed the 6-OHDA-induced decrease in cell viability, prevented 6-OHDA-induced changes in condensed nuclei and decreased the percentage of apoptotic cells in a dose-dependent manner. Furthermore, LBP also slowed the accumulation of reactive oxygen species (ROS) and nitric oxide (NO), decreased the level of protein-bound 3-nitrotyrosine (3-NT) and intracellular free Ca2+, and inhibiting the overexpression of nuclear factor κB (NF-κB), neuronal nitric oxide synthase (nNOS) and inducible nitric oxide synthase (iNOS). These results demonstrate that LBP prevents 6-OHDA-induced apoptosis in PC12 cells, at least in part through the ROS-NO pathway.
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