Thromboxane A2 is a mediator of cyclooxygenase-2-dependent endothelial migration and angiogenesis.

Abstract:

:Cyclooxygenase-2 (COX-2) inhibitors reduce angiogenic responses to a variety of stimuli, suggesting that products of COX-2 may mediate critical steps. Here, we show that thromboxane A2 (TXA2) is one of several eicosanoid products generated by activated human microvascular endothelial cells. Selective COX-2 antagonists inhibit TXA2 production, endothelial migration, and fibroblast growth factor-induced corneal angiogenesis. Endothelial migration and corneal angiogenesis are similarly inhibited by a TXA2 receptor antagonist, SQ29548. A TXA2 agonist, U46619, reconstitutes both migration and angiogenesis responses under COX-2-inhibited conditions. These findings identify TXA2 as a COX-2 product that functions as a critical intermediary of angiogenesis.

journal_name

Cancer Res

journal_title

Cancer research

authors

Daniel TO,Liu H,Morrow JD,Crews BC,Marnett LJ

subject

Has Abstract

pub_date

1999-09-15 00:00:00

pages

4574-7

issue

18

eissn

0008-5472

issn

1538-7445

journal_volume

59

pub_type

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