Hypoxia-specific metal-organic frameworks combined with lactate immunometabolism regulation augment anti-tumor immunity of HIFU.

ABSTRACT: High-intensity focused ultrasound (HIFU) has emerged as one of the preferred modalities for breast-conserving oncotherapy, and immune response it triggers is key to prognosis. Nevertheless, its immunotherapy efficacy is often compromised by the postoperative tumor microenvironment (TME) featured by severe hypoxia and lactate accumulation, leading to subsequent tumor recurrence and metastasis. In this work, we designed hypoxia-specific metal-organic frameworks (AMCMOFs) that co-deliver the hypoxia-activated prodrug AQ4N and CaCO₃, aiming to enhance tumor immunogenicity and reversing immunosuppression brought by severe hypoxia and elevated lactate in the TME after HIFU surgery. AMCMOFs utilize hypoxia aggravated by HIFU to activate AQ4N, ultimately inducing immunogenic cell death.

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC12775925 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature