Dual surface-functionalized Janus nanocomposites of polystyrene/Fe₃O₄@SiO₂ for simultaneous tumor cell targeting and stimulus-induced drug release.

Wang, Feng; Pauletti, Giovanni M; Wang, Juntao; Zhang, Jiaming; Ewing, Rodney C; Wang, Yilong; Shi, Donglu · Adv Mater · 2013

basic_science · Level V

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Abstract

Folic acid (FA) and doxorubicin (DOX) are coupled separately onto Fe3 O4 @SiO2 and polystyrene surfaces of a unique polystyrene/Fe3 O4 @SiO2 Janus structure. This super-paramagnetic, dual-functionalized Janus nanocomposite enables effective tumor cell targeting and internalization via the folate receptor, and induces significant cancer cell death by controlled, stimulus-induced drug release under acidic conditions in endosomal compartments.

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