Abstract
Photothermal therapy (PTT) has been extensively developed as an effective approach against cancer. However, PTT can trigger inflammatory responses, in turn simulating tumor regeneration and hindering subsequent therapy. A therapeutic strategy was developed to deliver enhanced PTT and simultaneously inhibit PTT-induced inflammatory response. 1-Pyrene methanol was utilize to synthesize the anti-inflammatory prodrug pyrene-aspirin (P-aspirin) with a cleavable ester bond and also facilitate loading the prodrug on gold nanorod (AuNR)-encapsulated graphitic nanocapsule (AuNR@G), a photothermal agent, through π-π interactions. Such AuNR@G-P-aspirin complexes were used for near-infrared laser-triggered photothermal ablation of solid tumor and simultaneous inhibition of PTT-induced inflammation through the release of aspirin in tumor milieu. This strategy showed excellent effects in vitro and in vivo.
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