STING1 and cancer: Similarly, Sun and colleagues developed a biomimetic nanoplatform, termed CMM‐DiR, using a cancer cell membrane to co‐encapsulate the photothermal agent (DiR) and manganese dioxide nanoparticles (MnO2 NPs) for in situ immunization.[114b] In this system, the DiR‐mediated photothermal effect facilitated the release of TAAs, while manganese ions served as immune adjuvants to activate the STING pathway.