ROS-induced NO generation for gas therapy and sensitizing photodynamic therapy of tumor

A hybrid nanomaterial with NIR-induced heat and associated hydroxyl radical generation for synergistic tumor therapy

Although photothermal therapy (PTT) and photodynamic therapy (PDT) are widely commended for tumor treatment recently, they still suffer severe challenges due to the non-specificity of photothermal agents (PTAs)/photosensitizers (PSs) and hypoxic tumor microenvironment. Here, an oxygen independent biomimetic nanoplatform based on carbon sphere dotted with cerium oxide and coated by cell membrane (MCSCe) was designed and synthesized with good biocompatibility, homologous targeting ability, and improved photophysical activity. Notably, MCSCe could realize accumulation of hydrogen peroxide (H₂O₂) in tumor cells and hyperthermia under single laser (808 nm) irradiation, which were simultaneously utilized by itself to produce more toxic hydroxyl radical (OH). Resultantly, the synergistic therapeutic effect against tumor cells was obtained under near infrared (NIR) laser irradiation.

A small-sized and stable 2D metal–organic framework: a functional nanoplatform for effective photodynamic therapy

A small-sized 2D metal–organic framework with remarkable ROS generation ability through enhanced intersystem crossing.