Angiostatin Induces Mitotic Cell Death of Proliferating Endothelial Cells

Angiostatin is an inhibitor of tumor angiogenesis that induces regression of experimental tumors and enhances the antitumor effects of radiation therapy. We report that the cytotoxic effects of angiostatin are restricted to the proliferating endothelial cell population. In addition, angiostatin and...

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Veröffentlicht in:Molecular cell biology research communications 2000-05, Vol.3 (5), p.277-282
Hauptverfasser: Hari, Danielle, Beckett, Michael A., Sukhatme, Vikas P., Dhanabal, Mohanraj, Nodzenski, Edwardine, Lu, Hua, Mauceri, Helena J., Kufe, Donald W., Weichselbaum, Ralph R.
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container_end_page 282
container_issue 5
container_start_page 277
container_title Molecular cell biology research communications
container_volume 3
creator Hari, Danielle
Beckett, Michael A.
Sukhatme, Vikas P.
Dhanabal, Mohanraj
Nodzenski, Edwardine
Lu, Hua
Mauceri, Helena J.
Kufe, Donald W.
Weichselbaum, Ralph R.
description Angiostatin is an inhibitor of tumor angiogenesis that induces regression of experimental tumors and enhances the antitumor effects of radiation therapy. We report that the cytotoxic effects of angiostatin are restricted to the proliferating endothelial cell population. In addition, angiostatin and ionizing radiation (IR) interact by inducing death of dividing endothelial cells. We also show that angiostatin and IR interact to inhibit endothelial cell migration. These findings demonstrate that angiostatin targets the proliferating tumor vasculature and provide a mechanistic basis for the cytotoxic interaction of angiostatin and IR.
doi_str_mv 10.1006/mcbr.2000.0222
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subjects Angiogenesis Inhibitors - metabolism
Angiogenesis Inhibitors - pharmacology
Angiostatins
Animals
Antineoplastic Agents - metabolism
Antineoplastic Agents - pharmacology
Aorta - cytology
Cattle
Cell Death - drug effects
Cell Division - drug effects
Cell Migration Inhibition
Cells, Cultured
Endothelium, Vascular - cytology
Endothelium, Vascular - physiology
Endothelium, Vascular - radiation effects
Humans
Mitosis
Peptide Fragments - genetics
Peptide Fragments - metabolism
Peptide Fragments - pharmacology
Plasminogen - genetics
Plasminogen - metabolism
Plasminogen - pharmacology
Radiation, Ionizing
Recombinant Proteins - metabolism
Umbilical Veins - cytology
title Angiostatin Induces Mitotic Cell Death of Proliferating Endothelial Cells
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