Abstract
Combination chemotherapy administering multiple chemo-agents is widely exploited for the treatment of various cancers in the clinic. Specially for hepatocellular carcinoma (HCC), one of the most common malignancies, a co-administration of combinational cytostatic multi-kinase inhibitors and cytotoxic chemo-agents has been suggested as a potential curative approach. Here, Janus microcarriers were developed for the controlled local combination chemotherapy of HCC. The Janus microcarriers are composed of polycaprolactone (PCL) compartment and magnetic nanoparticles-loaded poly(lactide-co-glycolic acid) (PLGA) compartment which contain hydrophobic regorafenib and hydrophilic doxorubicin, respectively. Exploiting the magnetic anisotropy, rotational motion of the Janus microcarriers is controlled with magnetic field, which enables the active co-release of dual chemo-agents. Furthermore, Janus microcarriers exhibit magnetic resonance (MR) contrast effect, supporting the successful transcatheter intra-arterial delivery of the combination chemo-agents loaded the microcarriers to the targeted tumor. This Janus microcarriers potentially serve as a general combinational chemo-therapeutic platform for the co-delivery of various combinations of multi-chemo-agents.
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