Minimally Invasive Injectable Gel for Local Immunotherapy of Liver and Gastric Cancer

医学 癌症 免疫疗法 侵入性外科 外科 转移 内科学
作者
Xinghui Si,Guofeng Ji,Sheng Ma,Zichao Huang,Taiyuan Liu,Zhiyuan Shi,Yu Zhang,Jia Li,Wantong Song,Xuesi Chen
出处
期刊:Advanced Science [Wiley]
标识
DOI:10.1002/advs.202405935
摘要

Abstract Local immunotherapy represents a promising solution for preventing tumor recurrence and metastasis post tumor surgical resection by eliminating residue tumor cells as well as eliciting tumor‐specific immune responses. Minimally invasive surgery has become a mainstream surgical method worldwide due to its advantages of aesthetics and rapid postoperative recovery. Unfortunately, the currently reported local immunotherapy strategies are mostly designed to be used after open laparotomy, which go against the current surgical philosophy of minimally invasive therapy and is not suitable for clinical translation. Aiming at this problem, a minimally invasive injectable gel (MIGel) is herein reported loaded with immunotherapeutic agents for gastric and liver cancer postoperative treatment. The MIGel is formed by crosslinking between oxidized dextran (ODEX) and 4‐arm polyethylene glycol hydroxylamine (4‐arm PEG‐ONH 2 ) through oxime bonds, which can be injected through a clinic‐used minimally invasive drainage tube and adhered tightly to the tissue. The loaded oxaliplatin (OxP) and resiquimod (R848) can be released constantly over two weeks and resulted in over 75% cure rate in orthotopic mouse gastric and liver cancer model. Collectively, a concept of minimally invasive local immunotherapy is proposed and MIGel is designed for local intraperitoneal cancer immunotherapy through minimally invasive surgery, with good clinical translation potential.
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