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Updated: Dec 16, 2025

A High-Throughput Luciferase Assay to Evaluate Proteolysis of the Single-Turnover Protease PCSK9
Published on: August 28, 2018
Evolocumab, a PCSK9 inhibitor, protects human endothelial cells against H2O2-induced oxidative stress
Leila Safaeian1, Mina Mirian2, Shahryar Bahrizadeh1
1Department of Pharmacology and Toxicology, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
Context:
Recent surveys have shown an association between proprotein convertase subtilisin/kexin type 9 (PCSK9) and oxidative stress.
Objective:
In this investigation, the effect of evolocumab an anti-PCSK9 antibody was assessed against oxidative damage caused by hydrogen peroxide (H2O2) in human umbilical vein endothelial cells (HUVEC).
Material And Methods:
Viability of HUVEC was measured by MTT assay. Hydroperoxides and malondialdehyde (MDA) levels, and ferric reducing antioxidant power (FRAP) were detected in HUVEC that pre-treated with evolocumab and, then exposed to H2O2.
Results:
Evolocumab significantly prevented the cytotoxicity induced by H2O2 at the concentrations of 5-100 µg/ml. Pre-treatment of HUVEC with evolocumab reduced hydroperoxides and MDA levels and also increased FRAP value in intra- and extra-cellular mediums compared with H2O2 stimulated cells at different concentration ranges.
Conclusion:
This study displayed anti-oxidative and cytoprotective activities of evolocumab against oxidative damage caused by H2O2 in endothelial cells.
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