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Nucleosomes activate NF-κB in endothelial cells for induction of the proangiogenic cytokine IL-8

✍ Scribed by Jerome E. Tanner

Publisher
John Wiley and Sons
Year
2004
Tongue
French
Weight
250 KB
Volume
112
Category
Article
ISSN
0020-7136

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✦ Synopsis

Abstract

Solid tumors often exhibit regions undergoing apoptosis and necrosis, also referred to as “aponecrosis”, juxtaposed to sites of active angiogenesis. We explored whether nucleosomes resulting from aponecrosis induced the angiogenic factor IL‐8 in vascular endothelial cells. Results indicate that nucleosomes induced IL‐8. Nucleosomes increased IL‐6 and IL‐8 mRNA but not IL‐10, TNF‐α, VEGF or FGF‐2 mRNA. Induction of IL‐8 by nucleosomes in endothelial cells appeared to be the result of NF‐κB/RelA transcription factor activation. The increased expression of IL‐8 in vascular endothelial cells following nucleosome stimulation suggests that aponecrosis could play an important role in the promotion of tumor angiogenesis. © 2004 Wiley‐Liss, Inc.

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