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Cancer Lett. 2007 Dec 8;258(1):31-7. Epub 2007 Sep 14.

Up-regulation of LOX-1 expression by TNF-alpha promotes trans-endothelial migration of MDA-MB-231 breast cancer cells.

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  • 1Center for Biomedical Research, University of Texas Health Center at Tyler, Tyler, TX 75708, USA.

Abstract

Adhesion of cancer cell to endothelial cells and the subsequent trans-endothelial migration are key steps in metastasis. However, the identities of the molecules mediating cancer cell/endothelial cell interaction are still not fully understood. In this study, we tested the hypothesis that lectin-like oxidized-low-density lipoprotein (oxLDL) receptor-1 (LOX-1), a key mediator of vascular inflammation and atherosclerosis expressed on endothelial cell surface, mediates breast cancer cell/endothelial cell interactions. We showed that up-regulation of endothelial LOX-1 by TNF-alpha promoted the adhesion and trans-endothelial migration of MDA-MB-231 breast cancer cells. Thus, endothelial LOX-1 could present a novel pathway in breast cancer metastasis.

PMID:
17868983
DOI:
10.1016/j.canlet.2007.08.003
[PubMed - indexed for MEDLINE]
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