Oncology Central

Tetraiodothyroacetic acid-conjugated PLGA nanoparticles: a nanomedicine approach to treat drug-resistant breast cancer

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Aim: The aim was to evaluate tetraiodothyroacetic acid (tetrac), a thyroid hormone analog of l-thyroxin, conjugated to poly(lactic-co-glycolic acid) nanoparticles (T-PLGA-NPs) both in vitro and in vivo for the treatment of drug-resistant breast cancer. Materials & methods: The uptake of tetrac and T-PLGA-NPs in doxorubicin-resistant MCF7 (MCF7-Dx) cells was evaluated using confocal microscopy. Cell proliferation assays and a chick chorioallantoic membrane model of FGF2-induced angiogenesis were used to evaluate the anticancer effects of T-PLGA-NPs. In vivo efficacy was examined in a MCF7-Dx orthotopic tumor BALBc nude mouse model.

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