ACS Biomaterials Science & Engineering, Journal Year: 2024, Volume and Issue: 10(11), P. 7018 - 7029
Published: Oct. 17, 2024
Photodynamic therapy (PDT) has been widely used in the clinical of various tumors, especially superficial tumors. However, tumor microenvironment presents hypoxia, as well inherent antioxidant system (e.g., Nrf2) cells limits therapeutic outcomes. Herein, a cascade-responsive "oxidative stress amplifier" (named EZ@TD) is designed by encapsulating manganese-doped carbon dots acting photosensitizer and catalase (CAT)-like nanozyme within pH-sensitive ZIF-8 Zn2+-activated DNAzyme for relieving hypoxia efficient Nrf2 gene disruption to enhance PDT. It demonstrated that EZ@TD synergistically inhibited growth activated antitumor immune response inhibiting Nrf2/ARE signaling pathway We provide new paradigm amplifying intracellular oxidative interfering with pathways.
Language: Английский