Lysosomal Rupture‐Mediated "Broken Window Effect" to Amplify Cuproptosis and Pyroptosis for High‐Efficiency Cancer Immunotherapy.

Autophagy, a lysosome‐involved degradation pathway, as a self‐protective cellular process, always weakens the efficiency of tumor therapies. Herein, for the first time, the biodegradable copper (Cu) ions doped layered double hydroxide (Cu‐LDH) nanoparticles are reported for cancer immunotherapy via lysosomal rupture‐mediated "Broken Window Effect". Only injection of Cu‐LDH single therapeutic agent achieves various organelles destruction after lysosomal rupture, as well as the abnormal aggregation of Cu ions in tumor cells for cuproptosis and pyroptosis. More importantly, autophagy inhibition caused by lysosomal rupture improves Cu ions overload‐mediated cuproptosis and pyroptosis by blocking the lysosome‐mediated bulk degradation pathway, leading to good anti‐tumor immune responses and ultimately high‐efficiency tumor growth inhibition. This lysosomal rupture‐mediated "Broken Window Effect" provides a new paradigm for the autophagy enhanced tumor therapy. [ABSTRACT FROM AUTHOR]