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Mol. Cell. Biol., 10 1997, 5719-5726, Vol 17, No. 10
J Alonso, L Sanchez de Miguel, M Monton, S Casado and A Lopez-Farre
Changes in endothelial nitric oxide synthase (eNOS) expression may be
involved in the endothelium-dependent vasorelaxation dysfunction associated
with several vascular diseases. In the present work, we demonstrate that
eNOS mRNA contains a previously undescribed cis element in the 3'
untranslated region (3' UTR). A U+C-rich segment in the 3' UTR is critical
in complex formation with bovine aortic endothelial cell cytosolic
proteins. Tumor necrosis factor alpha (TNF- alpha), which destabilizes eNOS
mRNA, increased the binding activity of the cytosolic proteins in a
time-dependent manner. These data suggest that endothelial cytosolic
proteins bind to the 3' UTR of eNOS mRNA. These proteins may play a role in
TNF-alpha-induced eNOS mRNA destabilization.
Copyright © 1997, American Society for Microbiology
Endothelial cytosolic proteins bind to the 3' untranslated region of endothelial nitric oxide synthase mRNA: regulation by tumor necrosis factor alpha
Nephrology, Hypertension and Cardiovascular Research Laboratory, Instituto de Investigaciones Medicas, Fundacion Jimenez Diaz, Madrid, Spain.
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