Ultrasound-induced reactive oxygen species generation and mitochondria-specific damage by sonodynamic agent/metal ion-doped mesoporous silica.

Designing tumor microenvironment (TME)-specific active nanoparticles with minimum side effects for synergistic cancer therapy has become a hot topic in the recent decades. Aiming at further enhancing the therapeutic efficacy, an -induced mitochondrial dysfunction is a very promising strategy. To achieve these goals, a nano-sono-chemodynamic agent denoted as TPP-Cu@HMS, which integrated hematoporphyrin monomethyl ether (HMME), mPEG-NHS, triphenylphosphonium (TPP)-decorated mesoporous silica (MS) and coordinatively bound Cu ions for mitochondria-specific sonodynamic-chemodynamic therapy (SDT-CDT) of cancer, was designed.