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Hsp90 inhibition by NVP-AUY922 and NVP-BEP800 decreases migration and invasion of irradiated normoxic and hypoxic tumor cell lines.

Abstract
This study explores the impact of Hsp90 inhibitors NVP-AUY922 and NVP-BEP800 in combination with ionizing radiation (IR) on the migration and invasion of lung carcinoma A549 and glioblastoma SNB19 cells, under normoxia or hypoxia. Independent of oxygen concentration, both drugs decreased the migration and invasion rates of non-irradiated tumor cells. Combined drug-IR treatment under hypoxia inhibited cell invasion to a greater extent than did each treatment alone. Decreased migration of cells correlated with altered expression of several matrix-associated proteins (FAK/p-FAK, Erk2, RhoA) and impaired F-actin modulation. The anti-metastatic efficacy of the Hsp90 inhibitors could be useful in combinational therapies of cancer.
AuthorsSusanne Hartmann, Nadine Günther, Marlene Biehl, Astrid Katzer, Sebastian Kuger, Eike Worschech, Vladimir L Sukhorukov, Georg Krohne, Heiko Zimmermann, Michael Flentje, Cholpon S Djuzenova
JournalCancer letters (Cancer Lett) Vol. 331 Issue 2 Pg. 200-10 (May 01 2013) ISSN: 1872-7980 [Electronic] Ireland
PMID23340178 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2013 Elsevier Ireland Ltd. All rights reserved.
Chemical References
  • 5-(2,4-dihydroxy-5-isopropylphenyl)-4-(4-morpholin-4-ylmethylphenyl)isoxazole-3-carboxylic acid ethylamide
  • HSP90 Heat-Shock Proteins
  • Isoxazoles
  • NVP-BEP800
  • Pyrimidines
  • Resorcinols
Topics
  • Blotting, Western
  • Brain Neoplasms (pathology)
  • Carcinoma, Non-Small-Cell Lung (pathology)
  • Cell Hypoxia
  • Cell Line, Tumor
  • Cell Movement (drug effects)
  • Flow Cytometry
  • Glioblastoma (pathology)
  • HSP90 Heat-Shock Proteins (antagonists & inhibitors)
  • Humans
  • Isoxazoles (pharmacology)
  • Lung Neoplasms (pathology)
  • Microscopy, Electron, Scanning
  • Neoplasm Invasiveness (prevention & control)
  • Pyrimidines (pharmacology)
  • Resorcinols (pharmacology)
  • Wound Healing (drug effects)

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