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- W4224251368 endingPage "121528" @default.
- W4224251368 startingPage "121528" @default.
- W4224251368 abstract "Immunotherapy maintains the cancer-immunity cycle via re-activating the immune system, so as to achieve the purpose of anti-tumor. However, the response rate of current tumor immunotherapy strategies is still low. Even the most reported immune checkpoint block (ICB), the objective response rate (ORR) is only about 10-30%. Here, aiming at obtaining a higher response rate, we designed a cascade amplification nanocomposite consisting of the immune adjuvant polyinosinic:polycytidylic acid [Poly (I:C)] and aggregation-induced emission luminogen (AIEgen)-modified modular peptide (named PMRA). The PMRA includes: DPPA-1 peptide (P), an immune checkpoint inhibitor; PLGLAG peptide (M), a matrix metalloproteinase 2 (MMP-2) responsive sequence to promote the release of DPPA-1; RRRRRRRR peptide (R), for loading the Poly (I:C); PyTPA (A), a photosensitizer with AIE property. In cancer-immunity cycle, photodynamic therapy (PDT) mediated by PyTPA promotes the release of tumor-associated antigens (TAAs), and primes T lymphocytes. The cytokines coming from the stimulation of PDT and Poly (I:C) promote the activation of T lymphocytes. The high level of chemokines in tumor microenvironment promotes immune cells migration and infiltration in tumor with the assistance of PDT. Finally, through ICB with DPPA-1 peptide, T lymphocytes enhance the recognition of tumor cells and killing tumor cells. Immunogenic cell death induces the release of more TAAs, which will enter the next cycle and complete the full-loop again. Taking advantages of whole cancer-immunity cycle, the cascade amplification nanocomposite achieved almost 100% ORR in vivo. This concept of whole cancer-immunity cycle enhanced immunotherapy provides a novel perspective for tumor treatment." @default.
- W4224251368 created "2022-04-26" @default.
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- W4224251368 date "2022-06-01" @default.
- W4224251368 modified "2023-10-14" @default.
- W4224251368 title "A peptide-AIEgen nanocomposite mediated whole cancer immunity cycle-cascade amplification for improved immunotherapy of tumor" @default.
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- W4224251368 doi "https://doi.org/10.1016/j.biomaterials.2022.121528" @default.
- W4224251368 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35487065" @default.
- W4224251368 hasPublicationYear "2022" @default.
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