Gene therapy can offer an effective treatment for drug-resistant radio-insensitive cancer. However, progress has been hampered by the difficulties in developing an appropriate delivery mechanism. Now researchers have demonstrated for the first time that magnetic nanoparticles provide safe, effective and targeted "suicide-gene" delivery to cells of a particularly prevalent and highly resilient type of liver cancer. Because the nanoparticles are magnetic they can also be used for hyperthermia treatments, where magnetic energy is converted into heat to elevate the temperature of the surrounding cancerous tissue, increasing the overall therapeutic effect of the gene therapy. "Our in vivo and in vitro experiments showed that the gene therapy combined with the heating treatment was very effective," explains Chenyan Yuan, a researcher from Southeast University in China. "In mice, we saw that the tumour growth rate, volume and mass were significantly less in the combined treatment group compared to gene therapy and hyperthermia therapy alone." Yuan and colleagues from the Affiliated Zhong Da Hospital of Southeast University and Jiangsu Key Laboratory for Biomaterials and Devices in China equipped the magnetic nanoparticles with a tumour-specific promoter gene to specifically tackle hepatocellular carcinoma, which is the most common form of liver cancer and causes more … Continue reading
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