Immunogenic cell death, triggered by photothermal therapy or specific chemotherapy, strives to establish a positive feedback loop in cancer immunotherapy. This loop is characterized by the rapid release of antigens and adenosine triphosphate (ATP), ultimately leading to accelerated T cell infiltration. However, this loop is hindered by T cell exhaustion caused by adenosine originating from ATP and glucose deprivation in the immunosuppressive microenvironment. To overcome this challenge, we developed a pH-low insertion peptide-functionalized mesoporous-polydopamine-based nanoadjuvant that incorporates adenosine deaminase and doxorubicin (termed as PPMAD). PPMAD aimed to overcome T cell exhaustion by reducing adenosine consumption and providing an alternative carbon source for CD8