Proteomic Study on the Protective Effect of Tanshinone IIA Against Oxidative Injury to Human Umbilical Vein Endothelial Cells by Hydrogen Peroxide
Atherosclerosis is considered a chronic inflammatory disease and injury to vascular endothelial cells is an
important event at the onset of its pathogenesis. Oxidative stress is regarded as a pivotal pathogenic factor in the development
of endothelial cell injury and apoptosis. Tanshinone IIA is considered the main active lipophilic component of
the traditional Chinese medicine Danshen. It has been demonstrated that Tanshinone IIA protects endothelial cells from
oxidative stress-triggered injury and apoptosis, but many of its anti-oxidant and anti-apoptotic mechanisms still remain to
In this paper, our results show that HUVECs incubated with 1.1mM H2O2 for 12h had significantly decreased the viability
of endothelial cells, which was accompanied with obviously cell apoptosis. However, treatment with Tanshinone IIA (8
mM, 24h) resulted in a significant resistance to H2O2-induced apoptosis. We used 2D-DIGE (Difference in Gel Electrophoresis)
analysis followed by MALDI-TOF-TOF-MS to identify the proteins differentially expressed after human
umbilical vein endothelial cells (HUVECs) were protected with Tanshinone IIA against oxidative damage by hydrogen
peroxide. There were various differently expressed proteins, we picked out 32 proteins to analysis, and discovered that
Tanshinone IIA could protect endothelial cells by its anti-inflammatory or antioxidant effects, regulating proliferation and
differentiation, maintaining the cytoskeleton, and maintaining intracellular calcium homeostasis.
Keywords: HUVEC, H2O2, atherosclerosis, proteome, Tanshinone IIA.
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