当前位置:
X-MOL 学术
›
J. Am. Chem. Soc.
›
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.)
Photoactivatable Immunostimulatory Nanomedicine for Immunometabolic Cancer Therapy
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2022-10-10 , DOI: 10.1021/jacs.2c07872 Wencheng Wu 1 , Yinying Pu 2 , Bangguo Zhou 2 , Yucui Shen 3 , Shuang Gao 3 , Min Zhou 3 , Jianlin Shi 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2022-10-10 , DOI: 10.1021/jacs.2c07872 Wencheng Wu 1 , Yinying Pu 2 , Bangguo Zhou 2 , Yucui Shen 3 , Shuang Gao 3 , Min Zhou 3 , Jianlin Shi 1
Affiliation
A rationally designed immunostimulant (CC@SiO2-PLG) with a photoactivatable immunotherapeutic function for synergetic tumor therapy is reported. This CC@SiO2-PLG nanoplatform comprises catalase and a photosensitizer (Ce6) co-encapsulated in a silica capsule, to which an immunostimulant is conjugated through a reactive oxygen species-cleavable linker. After accumulating in tumor tissue, CC@SiO2-PLG generates O2 to relieve tumor hypoxia and promotes the production of singlet oxygen (1O2) upon laser irradiation, resulting in not only tumor destruction but also the release of tumor-associated antigens (TAAs). Simultaneously, the linker breakage by the photoproduced 1O2 leads to the remote-controlled release of conjugated indoleamine 2,3-dioxygenase (IDO) inhibitor from CC@SiO2-PLG and consequent immunosuppressive tumor microenvironment reversion. The released TAAs in conjunction with the inhibition of the IDO-mediated tryptophan/kynurenine metabolic pathway induced a boosted antitumor immune response to the CC@SiO2-PLG-mediated phototherapy. Therefore, the growth of primary/distant tumors and lung metastases in a mouse xenograft model was greatly inhibited, which was not achievable by phototherapy alone.
中文翻译:
用于免疫代谢癌症治疗的光活化免疫刺激纳米药物
报道了一种合理设计的免疫刺激剂 (CC@SiO 2 -PLG) 具有可光激活的免疫治疗功能,可用于协同肿瘤治疗。这种 CC@SiO 2 -PLG 纳米平台包含共同封装在二氧化硅胶囊中的过氧化氢酶和光敏剂 (Ce6),免疫刺激剂通过活性氧可裂解接头与二氧化硅胶囊结合。CC@SiO 2 -PLG在肿瘤组织中蓄积后,产生O 2缓解肿瘤缺氧,并在激光照射下促进单线态氧(1 O 2)的产生,不仅破坏肿瘤,还释放肿瘤相关抗原(TAA)。同时,光产生的1连接器断裂O 2导致从 CC@SiO 2 -PLG 远程控制释放共轭吲哚胺 2,3-双加氧酶 (IDO) 抑制剂以及随之而来的免疫抑制性肿瘤微环境逆转。释放的 TAA 与 IDO 介导的色氨酸/犬尿氨酸代谢途径的抑制相结合,诱导了对 CC@SiO 2 -PLG 介导的光疗的增强抗肿瘤免疫反应。因此,小鼠异种移植模型中原发性/远处肿瘤和肺转移瘤的生长受到极大抑制,这是仅靠光疗无法实现的。
更新日期:2022-10-10
中文翻译:
用于免疫代谢癌症治疗的光活化免疫刺激纳米药物
报道了一种合理设计的免疫刺激剂 (CC@SiO 2 -PLG) 具有可光激活的免疫治疗功能,可用于协同肿瘤治疗。这种 CC@SiO 2 -PLG 纳米平台包含共同封装在二氧化硅胶囊中的过氧化氢酶和光敏剂 (Ce6),免疫刺激剂通过活性氧可裂解接头与二氧化硅胶囊结合。CC@SiO 2 -PLG在肿瘤组织中蓄积后,产生O 2缓解肿瘤缺氧,并在激光照射下促进单线态氧(1 O 2)的产生,不仅破坏肿瘤,还释放肿瘤相关抗原(TAA)。同时,光产生的1连接器断裂O 2导致从 CC@SiO 2 -PLG 远程控制释放共轭吲哚胺 2,3-双加氧酶 (IDO) 抑制剂以及随之而来的免疫抑制性肿瘤微环境逆转。释放的 TAA 与 IDO 介导的色氨酸/犬尿氨酸代谢途径的抑制相结合,诱导了对 CC@SiO 2 -PLG 介导的光疗的增强抗肿瘤免疫反应。因此,小鼠异种移植模型中原发性/远处肿瘤和肺转移瘤的生长受到极大抑制,这是仅靠光疗无法实现的。