Transforming growth factor alpha stimulates prostacyclin production by cultured human vascular endothelial cells more potently than epidermal growth factor.

Abstract:

:Transforming growth factor alpha (TGF alpha) induces dose- and time-dependent stimulation of prostacyclin (PGI2) production by cultured human umbilical vein endothelial cells. The lowest stimulatory concentration of TGF alpha was 0.1 ng/ml and the maximal response, a 2.7-fold rise, was obtained with 10 ng/ml. The stimulation, which lasted at least 24 h, was blocked by cycloheximide and by indomethacin. TGF alpha induced PGI2 production at 10-100 times lower concentrations than did epidermal growth factor (EGF), although in stimulating endothelial cell growth the two factors were equipotent. This is the first demonstration that TGF alpha enhances PGI2 production by human cells. Moreover, this is the first evidence that it acts as both an agonist (growth) and a superagonist (PGI2 production) of EGF in the same cell type. I suggest that this phenomenon may be involved with the angiogenic activity of TGF alpha.

authors

Ristimäki A

doi

10.1016/s0006-291x(89)80116-0

subject

Has Abstract

pub_date

1989-05-15 00:00:00

pages

1100-5

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(89)80116-0

journal_volume

160

pub_type

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