RT Journal Article
SR Electronic
T1 ABT-898 Induces Tumor Regression and Prolongs Survival in a Mouse Model of Epithelial Ovarian Cancer
JF Molecular Cancer Therapeutics
JO Mol Cancer Ther
FD American Association for Cancer Research
SP 1876
OP 1885
DO 10.1158/1535-7163.MCT-11-0402
VO 10
IS 10
A1 Campbell, Nicole
A1 Greenaway, James
A1 Henkin, Jack
A1 Petrik, Jim
YR 2011
UL http://mct.aacrjournals.org/content/10/10/1876.abstract
AB Epithelial ovarian cancer (EOC) is the most lethal gynecologic malignancy and is often not diagnosed until late stages due to its asymptomatic nature. Women diagnosed with EOC typically undergo surgical debulking followed by chemotherapy; however, disease recurrence often occurs. In this study, we evaluated the ability of the thrombospondin-1 mimetic peptide, ABT-898, to regress established, late-stage tumors in a mouse model of human EOC. Ovarian tumors were induced and ABT-898 treatment was initiated at time points that were representative of late stages of the disease to study tumor regression. ABT-898 induced tumor regression and reduced the morbidity of treated animals compared with controls. Analysis of tumors from ABT-898–treated animals showed reduced abnormal tumor vasculature, decreased expression of the proangiogenic compound VEGF, and reduced tumor tissue hypoxia. ABT-898 treatment initiated at late-stage disease also significantly prolonged disease-free survival compared with control animals. Results from this study show that ABT-898 is capable of regressing established ovarian tumors in an animal model of the disease. As most women are detected at advanced stage EOC, ABT-898 may improve our treatment of ovarian cancer. Mol Cancer Ther; 10(10); 1876–85. ©2011 AACR. This article is featured in Highlights of This Issue, p. 1761