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- W4376138503 abstract "Abstract Blocking the binding of PD-1/PD-L1 has become an effective strategy in inhibition of tumor immune escape. At present, it mainly depends on the employment of macromolecular antibodies, which target PD-1/PD-L1 protein through binding one of PD-1 or PD-L1 domains. In this study, we present a different strategy, an aptamer modified molecularly imprinted polymer layer (APD–PD-L1–MIPL), to break PD-1/PD-L1 binding for the inhibition of tumor immune escape. The APD–PD-L1–MIPL is prepared by a MIP layer on the surface of CaCO 3 nanospheres using the peptide segment of the PD-L1 protein as a template. The subsequent removal of CaCO 3 nanospheres core formats the MIP layer, to ensure high specifically matching capacity and short equilibrium time. A PD-L1 antagonistic DNA aptamer, is modified into the MIP layer to enhance recognition capacity, resulting in dual-targeting functionality. The APD–PD-L1–MIPL is able to bind PD-L1 and allow suppressing the engagement of PD-L1 with PD-1, inducing to block of the downstream signaling pathways and, therefore, restore T cell function and inhibition of cancer growth. The APD–PD-L1–MIPL can quantitatively detect the bound proteins and the LOD of APD–PD-L1–MIPL is 0.003 mg mL −1 . This strategy enables provide a new idea for tumor immunotherapy." @default.
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- W4376138503 date "2023-05-11" @default.
- W4376138503 modified "2023-09-25" @default.
- W4376138503 title "Inhibition of tumor immune escape by blocking PD-1/PD-L1 engagement with dual-targeting molecularly imprinted polymer layer" @default.
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- W4376138503 doi "https://doi.org/10.1186/s12645-023-00209-3" @default.
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