TY - JOUR
T1 - Rosuvastatin-regulated post-translational phosphoproteome in human umbilical vein endothelial cells
AU - Huang, Bin
AU - Wu, Chien Hsing
AU - Li, Fu An
AU - Liang, Shih Shin
AU - Shieh, Ying Hua
AU - Wang, Ling Danny
PY - 2013/7
Y1 - 2013/7
N2 - Statins, 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors, are widely prescribed as cholesterol-lowering drugs. Statins have recently been found to have pleiotropic effects that are independent of their lipid-lowering properties. Phosphorylation of serine, threonine, and tyrosine residues of functional proteins are considered to be important in the endothelial signaling cascade. In this study, protein phosphorylation status in human umbilical vein endothelial cells (ECs) after rosuvastatin treatment was examined. The proteins were collected from rosuvastatin-treated ECs and then the phosphorylated peptides purified by a Fe3+-immobilized metal-affinity chromatography bead system were examined by liquid chromatography-tandem mass spectrometry analysis. Alterations of the phosphorylation status of proteins were noticed after rosuvastatin treatment. There were 277 and 530 phosphorylated proteins identified from the control and rosuvastatin-treated ECs, respectively. Among those proteins, T78, in addition to S156 of the Ras-GTPase-activating protein, was phosphorylated after rosuvastatin treatment. Rosuvastatin reduced the phosphorylation of Y455 in HSP90 protein. Decreased phosphorylation of T211 with a concurrent increase in the T291 phosphorylation of Akt1 was observed under rosuvastatin treatment. Increased S633 phosphorylation was detected in endothelial nitric oxide synthase. Western blot analysis further showed an earlier and greater S633 phosphorylation than that of S1177 in endothelial nitric oxide synthase after rosuvastatin treatment. Changes in the phosphorylation status of these proteins may alter the protein's function and affect endothelial physiology. The current study provides new insights leading to a better understanding of the pleiotropic effects of statins on the vascular system
AB - Statins, 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors, are widely prescribed as cholesterol-lowering drugs. Statins have recently been found to have pleiotropic effects that are independent of their lipid-lowering properties. Phosphorylation of serine, threonine, and tyrosine residues of functional proteins are considered to be important in the endothelial signaling cascade. In this study, protein phosphorylation status in human umbilical vein endothelial cells (ECs) after rosuvastatin treatment was examined. The proteins were collected from rosuvastatin-treated ECs and then the phosphorylated peptides purified by a Fe3+-immobilized metal-affinity chromatography bead system were examined by liquid chromatography-tandem mass spectrometry analysis. Alterations of the phosphorylation status of proteins were noticed after rosuvastatin treatment. There were 277 and 530 phosphorylated proteins identified from the control and rosuvastatin-treated ECs, respectively. Among those proteins, T78, in addition to S156 of the Ras-GTPase-activating protein, was phosphorylated after rosuvastatin treatment. Rosuvastatin reduced the phosphorylation of Y455 in HSP90 protein. Decreased phosphorylation of T211 with a concurrent increase in the T291 phosphorylation of Akt1 was observed under rosuvastatin treatment. Increased S633 phosphorylation was detected in endothelial nitric oxide synthase. Western blot analysis further showed an earlier and greater S633 phosphorylation than that of S1177 in endothelial nitric oxide synthase after rosuvastatin treatment. Changes in the phosphorylation status of these proteins may alter the protein's function and affect endothelial physiology. The current study provides new insights leading to a better understanding of the pleiotropic effects of statins on the vascular system
KW - Human umbilical vein endothelial cells
KW - Phosphorylation
KW - Pleiotropic effect
KW - Proteomics
KW - Rosuvastatin
UR - http://www.scopus.com/inward/record.url?scp=84879100719&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879100719&partnerID=8YFLogxK
U2 - 10.1016/j.kjms.2012.06.002
DO - 10.1016/j.kjms.2012.06.002
M3 - Article
C2 - 23768697
AN - SCOPUS:84879100719
VL - 29
SP - 347
EP - 352
JO - Gaoxiong yi xue ke xue za zhi = The Kaohsiung journal of medical sciences
JF - Gaoxiong yi xue ke xue za zhi = The Kaohsiung journal of medical sciences
SN - 1607-551X
IS - 7
ER -