Endothelial monocyte activating polypeptide ii induces endothelial cell apoptosis and may inhibit tumor angiogenesis

Adam C. Berger, H. Richard Alexander, Guangquing Tang, Peter S. Wu, Stephen M. Hewitt, Ewa Turner, Erwin Kruger, William D. Figg, Andrew Grove, Elise Kohn, David Stern, Steven K. Libutti

Research output: Contribution to journalArticle

83 Scopus citations

Abstract

Endothelial monocyte activating polypeptide II (EMAP-II) is a tumor-derived cytokine with potent effects on endothelial cells in vitro and in vivo including upregulation of tissue factor and the sensitization of human melanoma to systemic TNF treatment via its effects on the tumor vasculature. We investigated the effects of EMAP-II on tumor growth, angiogenesis, vasculogenesis, and apoptosis. EMAP-II inhibited endothelial cell proliferation, vasculogenesis, and neovessel formation. In vivo growth of human melanoma lines expressing high amounts of EMAP-II demonstrated slower growth, smaller tumors, and increased amounts of tumor necrosis than those expressing lower amounts of EMAP-II. EMAP-II induced endothelial-cell-specific apoptosis via a pathway that includes upregulation of the Fas-associated death domain and downregulation of Bcl-2. EMAP-II appears to have important effects on angiogenesis and may play a role in regulating tumor vascular growth.

Original languageEnglish (US)
Pages (from-to)70-80
Number of pages11
JournalMicrovascular Research
Volume60
Issue number1
DOIs
StatePublished - Jul 2000

Keywords

  • Angiogenesis
  • Apoptosis
  • EMAP-II
  • Necrosis
  • Tumor

ASJC Scopus subject areas

  • Biochemistry
  • Cardiology and Cardiovascular Medicine
  • Cell Biology

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    Berger, A. C., Alexander, H. R., Tang, G., Wu, P. S., Hewitt, S. M., Turner, E., Kruger, E., Figg, W. D., Grove, A., Kohn, E., Stern, D., & Libutti, S. K. (2000). Endothelial monocyte activating polypeptide ii induces endothelial cell apoptosis and may inhibit tumor angiogenesis. Microvascular Research, 60(1), 70-80. https://doi.org/10.1006/mvre.2000.2249