Abstract:
BACKGROUND AND AIMS:Recent studies have unveiled an association between ADAMTS7 gene variation and coronary artery disease (CAD) caused by atherosclerosis. We investigated if the ADAMTS7 Serine214-to-Proline substitution arising from a CAD-associated variant affected angiogenesis, since neovascularization plays an important role in atherosclerosis. METHODS AND RESULTS:ADAMTS7 knockdown in vascular endothelial cells (ECs) attenuated their angiogenesis potential, whereas augmented ADAMTS7-Ser214 expression had the opposite effect, leading to increased ECs migratory and tube formation ability. Proteomics analysis showed an increase in thrombospondin-1, a reported angiogenesis inhibitor, in culture media conditioned by ECs with ADAMTS7 knockdown and a decrease of thrombospondin-1 in media conditioned by ECs with ADAMTS7-Ser214 overexpression. Cleavage assay indicated that ADAMTS7 possessed thrombospondin-1 degrading activity, which was reduced by the Ser214-to-Pro substitution. The pro-angiogenic effect of ADAMTS7-Ser214 diminished in the presence of a thrombospondin-1 blocking antibody. CONCLUSIONS:The ADAMTS7 Ser217-to-Pro substitution as a result of ADAMTS7 polymorphism affects thrombospondin-1 degradation, thereby promoting atherogenesis through increased EC migration and tube formation.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Pu X,Chan K,Yang W,Xiao Q,Zhang L,Moore AD,Liu C,Webb TR,Caulfield MJ,Samani NJ,Zhu J,Ye Sdoi
10.1016/j.atherosclerosis.2020.01.015subject
Has Abstractpub_date
2020-03-01 00:00:00pages
11-17eissn
0021-9150issn
1879-1484pii
S0021-9150(20)30031-9journal_volume
296pub_type
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