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Electrochemotherapy for Colorectal Cancer with Commonly Used Chemotherapeutic Agents in a Mouse Model

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Abstract

We examined here the usefulness of electrochemotherapy against colorectal cancer (CRC) using a mouse model. Electropermeabilization profoundly increased the sensitivity of murine CRC, Colon 26, and MC38 cells to bleomycin (BLM) but not to 5-fluorouracil (5-FU) or to cisplatin (CDDP) in vitro. In vivo experiments revealed that electrochemotherapy with 5-FU, CDDP, or BLM was much more effective against CRC compared with the treatment of the drug alone. Electrochemotherapy with BLM or CDDP exhibited profound antitumor effects on subcutaneously established CRC in mice, and complete tumor regression was observed in five and four of eight animals, respectively. Electrochemotherapy with 5-FU also had an impact on CRC development, and complete cure was observed in one of eight animals. Subsequent analyses revealed that electropermeabilization significantly increased intratumoral amounts of BLM and CDDP but not 5-FU. These results indicate that electrochemotherapy may be a promising treatment modality against CRC.

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Kuriyama, S., Matsumoto, M., Mitoro, A. et al. Electrochemotherapy for Colorectal Cancer with Commonly Used Chemotherapeutic Agents in a Mouse Model. Dig Dis Sci 45, 1568–1577 (2000). https://doi.org/10.1023/A:1005565027969

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