Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/67129
Title: Targeting the CYP2B1/cyclophosphamide suicide system to fibroblast growth factor receptors result in a potent antitumoral response in pancreatic cancer models
Author: Huch, Meritxell
Abate-Daga, Daniel
Roig, Josep Maria
Gonzalez, Juan Ramón
Fabregat Prous, Juan
Sosnowski Bárbara
Mazo Sánchez, Adela
Fillat i Fonts, Cristina
Keywords: Càncer
Pàncrees
Cancer
Pancreas
Issue Date: 28-Dec-2006
Publisher: Mary Ann Liebert, Inc.
Abstract: The CYP2B1/cyclophosphamide (CPA) suicide gene therapy approach has been shown to be highly promising in clinical trials for the treatment of pancreatic cancer. However, delivering the therapeutic gene to a sufficient number of tumor cells able to trigger a complete response remains a challenge. Target-specific delivery of adenovirus to fibroblast growth factor receptors (FGFRs) has been obtained in a variety of tumor models and has been shown to highly increase transduction efficiency. In the present paper we have tested the therapeutic outcome of retargeting the adenoviral vector, Ad-CYP2B1, to FGFRs, using an FGF2-Fab' conjugate, in pancreatic cancer models. First, we show a heterogeneous subcellular distribution of overexpressed FGFR-1 in pancreatic cancer cells. Higher transduction efficiency was observed in five of the six cell lines studied after FGF2-AdGFPLuc infection. Interestingly, an association between FGFR-1 membrane cell expression and viral entry was found. Moreover, tumors injected with FGF2-AdGFPLuc showed enhanced and persistent transgene expression. Importantly, we demonstrate the relevant enhanced cytotoxic effect of the FGF2-Ad-CYP2B]/CPA system in four of the six cell lines studied. Moreover, retargeting Ad-CYP2B1/CPA to FGFRs resulted in a potent antitumoral effect and in an increased survival rate, in two human pancreatic xenograft models. Thus, our results indicate that redirecting adenoviruses to FGFRs highly increases the potency of the suicide system CYP2B1/CPA. Consequently, it may constitute a promising approach to the treatment of patients with pancreatic tumors, in which a high proportion of FGF receptors precisely localize to the plasma membrane.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1089/hum.2006.17.1187
It is part of: Human Gene Therapy, 2006, vol. 17, p. 1187-1200
Related resource: http://dx.doi.org/10.1089/hum.2006.17.1187
URI: http://hdl.handle.net/2445/67129
ISSN: 1043-0342
Appears in Collections:Articles publicats en revistes (Bioquímica i Biomedicina Molecular)

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