Publications by authors named "Chiara De Vellis"

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Radiosensitisation of Hepatocellular Carcinoma Cells by Vandetanib.

Cancers (Basel) 2020 Jul 13;12(7). Epub 2020 Jul 13.

University College London Cancer Institute, University College London, London WC1E 6BT, UK.

Hepatocellular Carcinoma (HCC) is increasing in incidence worldwide and requires new approaches to therapy. The combination of anti-angiogenic drug therapy and radiotherapy is one promising new approach. The anti-angiogenic drug vandetanib is a tyrosine kinase inhibitor of vascular endothelial growth factor receptor-2 (VEGFR-2) and RET proto-oncogene with radio-enhancement potential. To explore the benefit of combined vandetanib and radiotherapy treatment for HCC, we studied outcomes following combined treatment in pre-clinical models.

Methods: Vandetanib and radiation treatment were combined in HCC cell lines grown and . In addition to 2D migration and clonogenic assays, the combination was studied in 3D spheroids and a syngeneic mouse model of HCC.

Results: Vandetanib IC 50 s were measured in 20 cell lines and the drug was found to significantly enhance radiation cell kill and to inhibit both cell migration and invasion . , combination therapy significantly reduced cancer growth and improved overall survival, an effect that persisted for the duration of vandetanib treatment.

Conclusion: In 2D and 3D studies and in a syngeneic model , the combination of vandetanib plus radiotherapy was more efficacious than either treatment alone. This new combination therapy for HCC merits evaluation in clinical trials.
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July 2020