A “dual lock-and-key” engineered intracellular synthesis for high-precision cancer therapy
摘要
Therapeutic biosynthesis has emerged as a cutting-edge technology for precision medicine. However, achieving the highly-controlled synthesis of abiotic matter at the tumor location for efficient therapy remains an ongoing challenge. Here, we develop a “dual lock-and-key” system to accomplish tumor cell-specific intracellular synthesis for accurate cancer therapy. The proposed precursor structure (“dual-lock”) can be activated in target cancer cells by two endogenously overexpressed enzymes (“dual key”), azor-eductase (AzoR) and nitroreductase (NTR), to initiate a condensation reaction for the in situ synthesis of fibrous mesh covalent organic polymers (Fm-COPs). The synthesized Fm-COPs demonstrate an excellent ability to disrupt the cytoskeleton, thereby inhibiting cell migration, suppressing cell invasion, and inducing apoptosis. Importantly, by leveraging the dual enzyme-responsive mechanism and small-molecule precursors the proposed intracellular synthesis strategy performs well on specific enrichment and tumor penetration, resulting in effective inhibition of tumor proliferation without side effects. Our findings suggest that this “dual lock-and-key” engineered intracellular synthesis represents a promising next-generation option for high-precision cancer therapies.