Abstract
AbstractChemodynamic therapy (CDT) has great potential in cancer treatment, but its efficacy is limited due to non‐specificity, insufficient hydrogen peroxide (H2O2), and excessive glutathione (GSH) within the tumor microenvironment (TME). Here, an intelligent nanoplatform (Fe3O4@MnO2@NO@Au NPs, abbreviated as CD44FMNA) is reported for the treatment of breast cancer, which is constructed with Fe3O4 nanoparticles (NPs) as the core coated with manganese dioxide (MnO2) nanoshells encapsulating NO donors and gold nanoparticles (Au NPs) within the pores of MnO2, followed by the conjugation of targeting ligand anti‐CD44 mAb. The fabricated CD44FMNA initially remains inactive in normal cells, but after CD44 receptor ‐mediated MDA‐MB‐231 cell‐specific endocytosis, acidic TME can induce the decomposition of the MnO2 shell to release NO donors, thereby dually depleting the existing GSH in cells and enhancing the Fenton‐like reaction in a cascade manner. The generation of hydroxyl radicals (·OH) and the dual depletion of GSH can significantly weaken the GSH‐related antioxidant defense system (ADS) within MDA‐MB‐231 cells, accelerating apoptosis and cell death via the mitochondrial pathway. In addition, in vivo studies demonstrate that CD44FMNA can effectively inhibit tumor growth with good biosafety. Therefore, this nanoplatform may provide an effective therapy for the treatment of breast cancer.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
