Abstract
We have produced a micelle nanoparticle with intrinsic pH response, which is formed by self-assembled amphiphilic polyethylene glycol-Schiff-doxorubicin (PEG-Schiff-DOX) prodrug. These nanoparticles can maintain stability well under normal conditions and last for more than a week, but they will rapidly decompose in slightly acidic environments. The concentration of DOX in the nano solution is high with the drug loading ratio of 49.4%. This pH-responsive drug release behavior may lead to higher intracellular drug concentrations and prolonged action times. CCK-8 assays have shown that the nanosuspension exhibits superior anti-tumor activity against HeLa cells compared to free DOX. It is believed that these nanoparticle-based prodrug have great potential for developing DOX formulations for cancer therapy.
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