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Am J Physiol Cell Physiol. 2002 Apr;282(4):C917-25.

Differential roles of ICAM-1 and E-selectin in polymorphonuclear leukocyte-induced angiogenesis.

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1
Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.

Abstract

Ets-1, which stimulates metalloproteinase gene transcription, has a key role in angiogenesis. We first examined whether activated polymorphonuclear leukocytes (PMNs) enhanced angiogenesis through the induction of Ets-1. Addition of activated PMNs to endothelial cells stimulated both in vitro angiogenesis in collagen gel and Ets-1 expression. Both angiogenesis and Ets-1 expression induced by PMNs were reduced by ets-1 antisense oligonucleotide, suggesting that Ets-1 is an important factor in PMN-induced angiogenesis. Although intercellular adhesion molecule (ICAM)-1 and E-selectin are involved in PMN-induced angiogenesis, the mechanisms underlying their roles in angiogenesis have yet to be elucidated. PMN-induced Ets-1 expression was reduced by a monoclonal antibody against ICAM-1 but not E-selectin despite the inhibition of PMN-induced angiogenesis by both antibodies. Moreover, the stimulation of angiogenesis by H(2)O(2) without PMNs was inhibited by a monoclonal antibody to E-selectin but not ICAM-1. These findings suggested that ICAM-1 in endothelial cells may act as a signaling receptor to induce Ets-1 expression, whereas E-selectin seems to function in the formation of tubelike structures in vascular endothelial cell cultures.

PMID:
11880280
DOI:
10.1152/ajpcell.00223.2001
[Indexed for MEDLINE]
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