Por favor, use este identificador para citar o enlazar este Item:http://hdl.handle.net/20.500.12105/8537
Título
Monitoring vascular normalization induced by antiangiogenic treatment with (18)F-fluoromisonidazole-PET
Autor(es)
Hernandez-Agudo, Elena CNIO | Mondejar, Tamara | Soto-Montenegro, Maria Luisa | Megias Vazquez, Diego CNIO | Mouron, Silvana Andrea CNIO | Sanchez, Jesus | Hidalgo, Manuel | Lopez-Casas, Pedro Pablo | Mulero Francisca, Francisca CNIO | Desco, Manuel CNIC | Quintela Fandino, Miguel Angel CNIO
Fecha de publicación
2016-05
Cita
Mol Oncol. 2016;10(5):704-18.
Idioma
Inglés
Tipo de documento
journal article
Resumen
BACKGROUND: Rationalization of antiangiogenics requires biomarkers. Vascular re-normalization is one widely accepted mechanism of action for this drug class. The interstitium of tumors with abnormal vasculature is hypoxic. We sought to track vascular normalization with (18)F-misonidazole ([18F]-FMISO, a probe that detects hypoxia) PET, in response to window-of-opportunity (WoO) treatment with the antiangiogenic dovitinib. METHODS: Two patient-derived pancreas xenografts (PDXs; Panc215 and Panc286) and the spontaneous breast cancer model MMTV-PyMT were used. Animals were treated during 1 week of WoO treatment with vehicle or dovitinib, preceded and followed by [18F]-FMISO-PET, [18F]-FDG-PET, and histologic assessment (dextran extravasation, hypoxia and microvessel staining, and necrosis, cleaved caspase-3 and Ki67 measurements). After WoO treatment, gemcitabine (pancreas)/adriamycin (breast) or vehicle was added and animals were treated until the humane endpoint. Tumor growth inhibition (TGI) and survival were the parameters studied. RESULTS: [18F]-FMISO SUV did not change after dovitinib-WoO treatment compared to vehicle-WoO (0.54 vs. 0.6) treatment in Panc215, but it decreased significantly in Panc286 (0.58 vs. 1.18; P < 0.05). In parallel, 10-KDa perivascular dextran extravasation was not reduced with dovitinib or vehicle-WoO treatment in Panc215, but it was reduced in Panc286. Whereas the addition of dovitinib to gemcitabine was indifferent in Panc215, it increased TGI in Panc286 (TGI switched from -59% to +49%). [18F]-FMISO SUV changes were accompanied by an almost 100% increase in interstitial gemcitabine delivery (665-1260 ng/mL). The results were validated in the PyMT model. CONCLUSIONS: [18F]-FMISO accurately monitored vascular re-normalization and improved interstitial chemotherapy delivery.
Palabras clave
(18)F-misonidazole-PET | Antiangiogenics | Biomarker | Breast cancer | Pancreatic cancer | Vascular normalization
MESH
Angiogenesis Inhibitors | Animals | Antimetabolites, Antineoplastic | Benzimidazoles | Breast | Breast Neoplasms | Cell Hypoxia | Cell Line, Tumor | Deoxycytidine | Female | Fluorine Radioisotopes | Humans | Mice | Mice, Nude | Misonidazole | Neovascularization, Pathologic | Pancreas | Pancreatic Neoplasms | Positron-Emission Tomography | Quinolones
Descripción
This work was supported by the following sources: Fondo de Investigacion Sanitaria (Ministry of Health, Spain; numbers FIS PI10/0288, FIS PI13/00430, FIS PI 11/00616, CPII14/00005 and FIS PI14/00860; the first two awarded to MQF and the last three to MD), and "Fondo Europeo de Desarrollo Regional (FEDER) - Una manera de hacer Europa". MQF is a recipient of a 2010 Beca-Retorno from the AECC Scientific Foundation. Rosae Foundation and AVON Espana S.A.U. contributed to this work with unrestricted donations. Dovitinib was kindly provided by Novartis.
Versión en línea
DOI
Aparece en las colecciones