Journal of Ginseng Research

The Korean Society of Ginseng (고려인삼학회)
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Ginsenoside compound K protects human umbilical vein endothelial cells against oxidized low-density lipoprotein-induced injury via inhibition of nuclear factor-κB, p38, and JNK MAPK pathways

  • Lu, Shan (Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences) ;
  • Luo, Yun (Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences) ;
  • Zhou, Ping (Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences) ;
  • Yang, Ke (Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences) ;
  • Sun, Guibo (Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences) ;
  • Sun, Xiaobo (Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences)
  • Received : 2017.03.15
  • Accepted : 2017.09.04
  • Published : 2019.01.15
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Abstract

Background: Oxidized low-density lipoprotein (ox-LDL) causes vascular endothelial cell inflammatory response and apoptosis and plays an important role in the development and progression of atherosclerosis. Ginsenoside compound K (CK), a metabolite produced by the hydrolysis of ginsenoside Rb1, possesses strong anti-inflammatory effects. However, whether or not CK protects ox-LDL-damaged endothelial cells and the potential mechanisms have not been elucidated. Methods: In our study, cell viability was tested using a 3-(4, 5-dimethylthiazol-2yl-)-2,5-diphenyl tetrazolium bromide (MTT) assay. Expression levels of interleukin-6, monocyte chemoattractant protein-1, tumor necrosis factor-${\alpha}$, intercellular adhesion molecule-1, and vascular cell adhesion molecule-1 were determined by enzyme-linked immunosorbent assay and Western blotting. Mitochondrial membrane potential (${\Delta}{\Psi}m$) was detected using JC-1. The cell apoptotic percentage was measured by the Annexin V/ propidium iodide (PI) assay, lactate dehydrogenase, and caspase-3 expression. Apoptosis-related proteins, nuclear factor $(NF)-{\kappa}B$, and mitogen-activated protein kinases (MAPK) signaling pathways protein expression were quantified by Western blotting. Results: Our results demonstrated that CK could ameliorate ox-LDL-induced human umbilical vein endothelial cells (HUVECs) inflammation and apoptosis, $NF-{\kappa}B$ nuclear translocation, and the phosphorylation of p38 and c-Jun N-terminal kinase (JNK). Moreover, anisomycin, an activator of p38 and JNK, significantly abolished the anti-apoptotic effects of CK. Conclusion: These results demonstrate that CK prevents ox-LDL-induced HUVECs inflammation and apoptosis through inhibiting the $NF-{\kappa}B$, p38, and JNK MAPK signaling pathways. Thus, CK is a candidate drug for atherosclerosis treatment.

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References

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