articleNature CommunicationsNov 1, 2023GOLD OA

Nanosensitizer-mediated augmentation of sonodynamic therapy efficacy and antitumor immunity

Brigham and Women's Hospital · Harvard University · +5 more institutions

PubMed
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Abstract

Abstract The dense stroma of desmoplastic tumor limits nanotherapeutic penetration and hampers the antitumor immune response. Here, we report a denaturation-and-penetration strategy and the use of tin monosulfide nanoparticles (SnSNPs) as nano-sonosensitizers that can overcome the stromal barrier for the management of desmoplastic triple-negative breast cancer (TNBC). SnSNPs possess a narrow bandgap (1.18 eV), allowing for efficient electron (e − )-hole (h + ) pair separation to generate reactive oxygen species under US activation. More importantly, SnSNPs display mild photothermal properties that can in situ denature tumor collagen and facilitate deep penetration into the tumor mass upon near-infrared…

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