辛迪康1
硫酸乙酰肝素
细胞生物学
化学
蛋白多糖
佩莱肯
p38丝裂原活化蛋白激酶
MAPK/ERK通路
糖胺聚糖
生物化学
信号转导
细胞外基质
生物
细胞
作者
Takato Hara,Hiroko Tatsuishi,Tomomi Banno,Tomoya Fujie,Chika Yamamoto,Hiroshi Naka,Toshiyuki Kaji
摘要
Proteoglycans synthesized by vascular endothelial cells are important for regulating cell function and the blood coagulation-fibrinolytic system. Since we recently reported that copper(II) bis(diethyldithiocarbamate) (Cu(edtc)2) modulates the expression of some molecules involving the antioxidant and blood coagulation systems, we hypothesized that Cu(edtc)2 may regulate the expression of proteoglycans and examined this hypothesis using a bovine aortic endothelial cell culture system. The experiments showed that Cu(edtc)2 induced the expression of syndecan-4, a transmembrane heparan sulfate proteoglycan, in a dose- and time-dependent manner. This induction required the whole structure of Cu(edtc)2—the specific combination of intramolecular copper and a diethyldithiocarbamate structure—as the ligand. Additionally, the syndecan-4 induction by Cu(edtc)2 depended on the activation of p38 mitogen-activated protein kinase (MAPK) but not the Smad2/3, NF-E2-related factor2 (Nrf2), or epidermal growth factor receptor (EGFR) pathways. p38 MAPK may be a key molecule for inducing the expression of syndecan-4 in vascular endothelial cells.
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