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8 results on '"Kerbel, Robert S."'

3. Rapid Chemotherapy-Induced Acute Endothelial Progenitor Cell Mobilization: Implications for Antiangiogenic Drugs as Chemosensitizing Agents

Author

Shaked, Yuval, Henke, Erik, Roodhart, Jeanine M.L., Mancuso, Patrizia, Langenberg, Marlies H.G., Colleoni, Marco, Daenen, Laura G., Man, Shan, Xu, Ping, Emmenegger, Urban, Tang, Terence, Zhu, Zhenping, Witte, Larry, Strieter, Robert M., Bertolini, Francesco, Voest, Emile E., Benezra, Robert, and Kerbel, Robert S.

Published
2008
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8. Genetic heterogeneity of the vasculogenic phenotype parallels angiogenesis Implications for cellular surrogate marker analysis of antiangiogenesis

Author

Shaked, Yuval, Bertolini, Francesco, Man, Shan, Rogers, Michael S., Cervi, Dave, Foutz, Thomas, Rawn, Kimberley, Voskas, Daniel, Dumont, Daniel J., Ben-David, Yaacov, Lawler, Jack, Henkin, Jack, Huber, Jim, Hicklin, Daniel J., D'Amato, Robert J., and Kerbel, Robert S.

Abstract

Development of antiangiogenic therapies would be significantly facilitated by quantitative surrogate pharmacodynamic markers. Circulating peripheral blood endothelial cells (CECs) and/or their putative progenitor subset (CEPs) have been proposed but not yet fully validated for this purpose. Herein, we provide such validation by showing a striking correlation between highly genetically heterogeneous bFGF- or VEGF-induced angiogenesis and intrinsic CEC or CEP levels measured by flow cytometry, among eight different inbred mouse strains. Moreover, studies using genetically altered mice showed that levels of these cells are affected by regulators of angiogenesis, including VEGF, Tie-2, and thrombospondin-1. Finally, treatment with a targeted VEGFR-2 antibody caused a dose-dependent reduction in viable CEPs that precisely paralleled its previously and empirically determined antitumor activity.

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