A tumor‐targeting nano‐adjuvant for in situ vaccine based on ultrasound therapy

Autor: Linjie Cui, Haochen Yao, Fuxin Xue, Jiali Sun, Xitong Ren, Mengfei Zheng, Zhilin Liu, Zhaohui Tang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Aggregate, Vol 5, Iss 3, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2692-4560
DOI: 10.1002/agt2.504
Popis: Abstract Ultrasound‐generated antigens combined with TLR7/8 agonists as adjuvants have demonstrated significant anti‐tumor efficacy as an in‐situ vaccine. However, the use of TLR7/8 agonists can cause severe inflammatory responses. In this study, we present a novel tumor‐targeting nano‐adjuvant termed aPDL1‐PLG/R848 NPs, which are composed of aPDL1 antibody, Fc‐III‐4C peptide linker (Fc‐linker) and poly(L‐glutamic acid)‐grafted‐R848. Under ultrasound irradiation, antigen‐presenting cells activate immune mechanisms in vivo under dual stimulation of in situ antigens and immune adjuvants. The strategy inhibits primary tumor growth and induces a strong antigen‐specific immune memory effect to prevent tumor recurrence in vivo. This work offers a safe and potent platform for an in situ cancer vaccine based on ultrasound therapy.
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