Multidrug Resistance in Cancer Circumvented Using a Cytosolic Drug Reservoir
Publication in refereed journal


摘要It is discovered that sustained cytosolic drug release at a sufficient concentration is an effective mechanism to circumvent multidrug resistance and consequently enhance antitumor drug efficacy. It is showed that a simple way to enable this mechanism is to reach an intracellular kinetic balance of the drug movement between the drug released from the carrier into the cytosol and the one removed from the cell interior. By adopting nanoparticle (NP) as the drug carrier, a reservoir of drug can be maintained inside the cells upon effective cellular uptake of these NPs via endocytosis. This study shows that gradual release of the drug from the NP carrier provides a feasible scheme for sustained drug release in cells, resulting in relatively stable cytosolic drug concentration level, particularly in the drug resistant case. By implementing an “optical switch” with light irradiation on photosensitizer in the same nanoparticle carrier, cytosolic drug release is further promoted, which increases cytosolic drug concentration with good concentration retention. Enhanced drug efficacy in drug sensitive as well as resistant models is demonstrated both in vitro and in vivo. Such a mechanism is shown to efficiently circumvent multidrug resistance, and at the same time largely reduce the systemic toxicity of the anticancer drug.
著者Fan L, Zhang SL, Zhang CY, Yin C, Chu ZQ, Song CJ, Lin G, Li Q
期刊名稱Advanced Science
關鍵詞circumventing multidrug resistance,cytosolic drug concentration,cytosolic drug release,optical switches,self-decomposable nanoparticles
Web of Science 學科類別Chemistry, Multidisciplinary;Nanoscience & Nanotechnology;Materials Science, Multidisciplinary;Chemistry;Science & Technology - Other Topics;Materials Science

上次更新時間 2021-16-09 於 01:13