Key result
Antisense Nox4 downregulation reduces endothelial superoxide production, suggesting a major NADPH oxidase catalytic role.
Why the study?
The precise molecular structure and activation mechanism of endothelial NAD(P)H oxidase, a major source of reactive oxygen species, remained poorly understood.
Does downregulation of Nox4 reduce superoxide production in endothelial cells?
Does downregulation of Nox4 reduce superoxide production in endothelial cells?
Nox4 is abundantly expressed in endothelial cells and functions as the major catalytic component of endothelial NAD(P)H oxidase, contributing to superoxide production.
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Hypothesis-generating for Nox4 targeting in endothelial oxidative stress; leaves open translation to human cardiovascular disease.
Ago et al. (2004) studied this question. Downregulation of Nox4 by an antisense oligonucleotide was evaluated on Superoxide production in endothelial cells. Downregulation of Nox4 by an antisense oligonucleotide reduced superoxide production in endothelial cells in vivo and in vitro, suggesting Nox4 is the major catalytic component of endothelial NAD(P)H oxidase.
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