Asymmetric synthesis and evaluation of danshensu-cysteine conjugates as novel potential anti-apoptotic drug candidates.

Asymmetric synthesis and evaluation of danshensu-cysteine conjugates as novel potential anti-apoptotic drug candidates.
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丹参素-半胱氨酸缀合物作为新型潜在抗凋亡候选药物的不对称合成及评价

DOI:
10.3390/ijms16010628
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发表时间:
2014-12-29
影响因子:
5.6
通讯作者:
Zhu YZ
Zhu YZ
中科院分区:
生物学2区
文献类型:
--
作者:
Pan LL;Wang J;Jia YL;Zheng HM;Wang Y;Zhu YZ

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我们先前曾报道,丹参素 - 半胱氨酸偶联物N - ((R)-3 - 苄硫基 - 1 - 甲氧基 - 1 - 氧代 - 2 - 丙酰基)-2 - 乙酰氧基 - 3 - (3,4 - 二乙酰氧基苯基)丙酰胺(DSC)是一种有效的抗氧化和抗凋亡剂。在此,我们进一步设计并不对称合成了DSC的两种非对映异构体,并探索它们潜在的生物活性。我们的结果表明,DSC及其两种非对映异构体在过氧化氢(H₂O₂)诱导的SH - SY5Y细胞损伤中发挥相似的保护作用,这表现为细胞活力、超氧化物歧化酶(SOD)和还原型谷胱甘肽(GSH)活性以及谷胱甘肽过氧化物酶(GPx)表达的增加,以及细胞形态变化和核浓缩、乳酸脱氢酶(LDH)释放和丙二醛(MDA)产生的减少。在过氧化氢刺激的人脐静脉内皮细胞(HUVEC)中,DSC浓度依赖性地减轻过氧化氢诱导的细胞死亡、LDH释放、线粒体膜电位崩溃,并调节凋亡相关蛋白(Bcl - 2、Bax、caspase - 3和caspase - 9)的表达。我们的结果有力地证明,DSC及其两种非对映异构体具有相似的抗氧化活性,并且DSC至少部分通过抑制凋亡和调节内源性抗氧化酶发挥显著的血管保护作用。
We have previously reported that the danshensu-cysteine conjugate N-((R)-3-benzylthio-1-methoxy-1-oxo-2-propanyl)-2-acetoxy-3-(3,4-diacetoxyphenyl) propanamide (DSC) is a potent anti-oxidative and anti-apoptotic agent. Herein, we further design and asymmetrically synthesize two diastereoisomers of DSC and explore their potential bioactivities. Our results show that DSC and its two diastereoisomers exert similar protective effects in hydrogen peroxide (H2O2)-induced cellular injury in SH-SY5Y cells, as evidenced by the increase of cell viability, superoxide dismutase (SOD), and reduced glutathione (GSH) activity, and glutathione peroxidase (GPx) expression, and the decrease of cellular morphological changes and nuclear condensation, lactate dehydrogenase (LDH) release, and malondialdehyde (MDA) production. In H2O2-stimulated human umbilical vein endothelial cells (HUVEC), DSC concentration-dependently attenuates H2O2-induced cell death, LDH release, mitochondrial membrane potential collapse, and modulates the expression of apoptosis-related proteins (Bcl-2, Bax, caspase-3, and caspase-9). Our results provide strong evidence that DSC and its two diastereoisomers have similar anti-oxidative activity and that DSC exerts significant vascular-protective effects, at least in part, through inhibition of apoptosis and modulation of endogenous antioxidant enzymes.
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