Chemotherapeutic drug-photothermal agent co-self-assembling nanoparticles for near-infrared fluorescence and photoacoustic dual-modal imaging-guided chemo-photothermal synergistic therapy

Journal of Controlled Release : Official Journal of the Controlled Release Society
Yang LiZhenqing Hou

Abstract

Multimodal imaging-guided synergistic combination therapy has shown great potential for cancer treatment. However, the nanocarrier-based theranostic systems suffer from batch-to-batch variation, complexity of multicomponent, poor drug loading, and carrier-related toxicity issues. To address these issues, herein we developed a novel carrier-free theranostic system with nanoscale characteristics for near-infrared fluorescence (NIRF) and photoacoustic (PA) dual-modal imaging-guided synergistic chemo-photothermal therapy (PTT). Indocyanine green (ICG) and epirubicin (EPI) could co-self-assemble into small molecular nanoparticles (NPs) in aqueous solution without any molecular precursor or excipient via collaborative interactions (electrostatic, π-π stacking, and hydrophobic interactions). The exceptionally high dual-drug loading (∼92wt%) ICG-EPI NPs showed good physiological stability, preferable photothermal response, excellent NIRF/PA imaging properties, pH-/photo-responsive drug release behavior, and promoted cellular endocytosis compared with free ICG or EPI. Importantly, the ICG-EPI NPs showed excellent tumor targeting ability with high spatial resolution and deep penetration via in vivo NIRF/PA dual-modal imaging. Moreover, i...Continue Reading

Citations

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