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WANG Xiaoying, WANG Xiaying, QIU Liangzhen, OUYANG Huizhi, XU Wei. Cytotoxicity and cellular uptake of paclitaxel-loaded carboxymethyl chitosan-rhein polymeric micelles in MCF-7 cells[J]. Journal of China Pharmaceutical University, 2020, 51(1): 33-37. DOI: 10.11665/j.issn.1000-5048.20200106
Citation: WANG Xiaoying, WANG Xiaying, QIU Liangzhen, OUYANG Huizhi, XU Wei. Cytotoxicity and cellular uptake of paclitaxel-loaded carboxymethyl chitosan-rhein polymeric micelles in MCF-7 cells[J]. Journal of China Pharmaceutical University, 2020, 51(1): 33-37. DOI: 10.11665/j.issn.1000-5048.20200106
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Cytotoxicity and cellular uptake of paclitaxel-loaded carboxymethyl chitosan-rhein polymeric micelles in MCF-7 cells

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  • In this study, in vitro cytotoxicity of carboxymethyl chitosan-rhein conjugate(CR conjugate)and paclitaxel-loaded carboxymethyl chitosan-rhein polymeric micelles(PTX/CR PMs)was evaluated by MTT method in MCF-7 cells. The results showed that CR conjugate displayed good security; PTX/CR PMs in 24 h showed better antitumor activity than Taxol® . Environment-responsive fluorescent probe P4 was used to determine the cellular uptake of PTX/CR PMs in MCF-7 cells. The results also showed that P4 and PTX co-loaded carboxymethyl chitosan-rhein polymeric micelles ［(P4+PTX)/CR PMs］ could be taken up by MCF-7 cells. There was no difference between(P4+PTX)/CR PMs group and(P4+PTX)/CR PMs with verapamil group, suggesting that CR PMs could protect fluorescent probe and/or drugs in their cores avoiding efflux by P-glycoprotein. These results will contribute to in vivo study of CR conjugate and PTX/CR PMs in the future.
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