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Inhibition of adrenocortical carcinoma by diphtheria toxin mutant CRM197. | LitMetric

Inhibition of adrenocortical carcinoma by diphtheria toxin mutant CRM197.

Chemotherapy

Department of Experimental Medicine and Public Health, University of Camerino, Camerino, Italy. daniele.martarelli @ unicam.it

Published: March 2010

Background: In this study, we investigated the effect of CRM197 treatment in human adrenocortical carcinoma (AC) implanted in nude mice. CRM197 is a non-toxic mutant of diphtheria toxin that binds heparin-binding epidermal growth factor-like growth factor (HB-EGF) which is implicated in the proliferative activity of several tumor cells.

Methods: HB-EGF expression in AC cells was evaluated by reverse transcription PCR and Western blot. AC tumors were implanted in nude mice and then treated with CRM197. Effects of treatment on angiogenesis and apoptosis were investigated by immunohistochemistry and Western blot. The effects on cell invasion and migration were investigated with a matrigel invasion assay.

Results: We demonstrated that human AC cells express HB-EGF. A treatment with CRM197 blocked growth, reduced angiogenesis and induced apoptosis in AC tumors implanted in nude mice. CRM197 also inhibited invasion and migration of these tumor cells.

Conclusions: These data support the evidence for anticancer properties of CRM197 in AC tumors.

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Source
http://dx.doi.org/10.1159/000264689DOI Listing

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