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Enhanced anti-tumor activity by the combination of a conditionally replicating adenovirus mediated interleukin-24 and dacarbazine against melanoma cells via induction of apoptosis

Enhanced anti-tumor activity by the combination of a conditionally replicating adenovirus mediated interleukin-24 and dacarbazine against melanoma cells via induction of apoptosis

Cancer Letters 294(2): 220-228

Malignant melanoma is one of the most lethal and aggressive human malignancies. It is notoriously resistant to all of the current therapeutic modalities, including chemotherapy. Suppressed apoptosis and extraordinary invasiveness are the distinctive features that contribute to the malignancy of melanoma. Dacarbazine (DTIC) has been considered as the gold standard for melanoma treatment with a response rate of 15-20%. Unfortunately, the resistance to this chemotherapeutic agent occurs frequently. ZD55-IL-24 is a selective conditionally replicating adenovirus that can mediate the expression of interleukin-24 (IL-24) gene, which has a strong anti-tumor effect. In this study, we hypothesized that a combination of ZD55-IL-24-mediated gene virotherapy and chemotherapy using DTIC would produce an increased cytotoxicity against human melanoma cells in comparison with these agents alone. Our results showed that the combination of ZD55-IL-24 and DTIC significantly enhanced the anti-tumor activity by more effectively inducing apoptosis in melanoma cells than either agent used alone without any overlapping toxicity against normal cells. This additive or synergistic effect of ZD55-IL-24 in combination with DTIC in killing human malignant melanoma cells implies a promising novel approach for melanoma therapy.

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Accession: 052982018

Download citation: RISBibTeXText

PMID: 20189296

DOI: 10.1016/j.canlet.2010.02.003

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