当前位置: X-MOL 学术ACS Nano › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Immunosonodynamic Therapy Designed with Activatable Sonosensitizer and Immune Stimulant Imiquimod
ACS Nano ( IF 15.8 ) Pub Date : 2022-06-17 , DOI: 10.1021/acsnano.2c03395
Huali Lei 1 , Ji Hyeon Kim 2 , Subin Son 2 , Linfu Chen 1 , Zifan Pei 1 , Yuqi Yang 1 , Zhuang Liu 1 , Liang Cheng 1 , Jong Seung Kim 2
Affiliation  

Sonodynamic therapy (SDT) has garnered extensive attention as a noninvasive treatment for deep tumors. Furthermore, imiquimod (R837), an FDA-approved toll-like receptor 7 agonist, is commonly used in clinical settings as an immune adjuvant. We prepared an activatable sonodynamic sensitizer platform (MR) based on glutathione-sensitive disulfide bonds linking Leu-MB, the reduced form of methylene blue (MB), and R837 to achieve efficient combinatory SDT and immunotherapy for tumors without harming normal tissues. We also used the amphiphilic polymer C18PMH-PEG to create self-assembled MB-R837-PEG (MRP) nanoparticles for immunosonodynamic therapy (iSDT). iSDT is a cancer treatment that combines activatable SDT and immunotherapy. Our iSDT demonstrated an excellent sonodynamic effect only at the tumor site, demonstrating high specificity in killing tumor cells when compared to SDT reported in the literature. The iSDT improves its tumor-killing effect by inducing an immune response, which is accomplished by secreted immune adjuvants in the tumor site. MRP was selectively activated by glutathione in the tumor microenvironment to release MB and R837, exhibiting excellent antitumor sonodynamic and immune responses. In addition, when combined with an α-PD-L1 antibody for immune checkpoint blockade, this therapy effectively inhibited tumor metastasis. Furthermore, mice treated with iSDT and α-PD-L1 antibody did not develop tumors even after tumor reinoculation, indicating that long-term immune memory was achieved. The concept of sonodynamic sensitizer preparation as a next-generation iSDT based on a noninvasive synergistic therapeutic modality applicable in the near future is presented in this study.

中文翻译:

用可激活声敏剂和免疫刺激剂咪喹莫特设计的免疫声动力学疗法

声动力疗法 (SDT) 作为一种深部肿瘤的无创治疗方法受到广泛关注。此外,咪喹莫特 (R837) 是一种经 FDA 批准的 toll 样受体 7 激动剂,通常在临床环境中用作免疫佐剂。我们制备了一种基于谷胱甘肽敏感二硫键连接 Leu-MB、亚甲蓝 (MB) 的还原形式和 R837 的可激活声动力学增敏剂平台 (MR),以实现肿瘤的高效联合 SDT 和免疫治疗,而不伤害正常组织。我们还使用了两亲聚合物 C 18PMH-PEG 创建用于免疫声动力学治疗 (iSDT) 的自组装 MB-R837-PEG (MRP) 纳米粒子。iSDT 是一种结合可激活 SDT 和免疫疗法的癌症治疗方法。我们的 iSDT 仅在肿瘤部位表现出出色的声动力学效果,与文献报道的 SDT 相比,在杀死肿瘤细胞方面表现出高特异性。iSDT 通过诱导免疫反应来提高其肿瘤杀伤效果,这是通过肿瘤部位分泌的免疫佐剂来实现的。MRP 在肿瘤微环境中被谷胱甘肽选择性激活以释放 MB 和 R837,表现出出色的抗肿瘤声动力学和免疫反应。此外,当与 α-PD-L1 抗体联合用于免疫检查点阻断时,该疗法可有效抑制肿瘤转移。此外,用 iSDT 和 α-PD-L1 抗体治疗的小鼠即使在重新接种肿瘤后也没有长出肿瘤,表明实现了长期免疫记忆。本研究提出了基于无创协同治疗方式的声动力敏化剂制备作为下一代 iSDT 的概念,适用于不久的将来。
更新日期:2022-06-17
down
wechat
bug