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【IF 12.8】载有活化 gasdermin D 的转基因细胞外囊泡可能抑制前列腺特异性膜抗原阳性前列腺癌的生长并增强免疫治疗

分类:引用文献   发布时间 2024/10/29   阅读: 322
杂志名称:Biomaterials
影响因子:12.8
文章题目:Genetically modified extracellular vesicles loaded with activated gasdermin D potentially inhibit prostate-specific membrane antigen-positive prostate carcinoma growth and enhance immunotherapy
DOI:https://doi.org/10.1016/j.biomaterials.2024.122894
第一作者:Ke Gao, Wenjin Xi, Jianxin Ni, Jun Jiang, Yonghua Lei, Lin Li, Jie Chu, Ruixiao Li, Yongpan An, Yanan Ouyang, Ruiping Su, Rui Zhang, Guojun Wu
作者单位:
西安市人民医院(西安市第四医院)泌尿外科西北大学生命科学与医学学院
空军医科大学免疫学系肿瘤生物学国家重点实验室
西安空军医科大学卫生服务基地
延安大学基础医学院免疫学系
空军医科大学生物化学与分子生物学教研室肿瘤生物学国家重点实验室


引用YOBIBIO产品:
U96-3660E  Human IFN-γ Elisa Kit
U96-1521E  Human IL-12 P70 ELISA Kit
U96-1497E  Human IL-2 ELISA Kit
U96-1088E  Human IL-10 ELISA Kit
U96-6012E  Human HMGB1 ELISA kit
U96-1492E  Human IL-1β ELISA Kit
U96-1964E  Human IL-18 ELISA Kit

文章摘要:
Prostate cancer (PCa) is associated with poor immunogenicity and lymphocytic infiltration, and immunotherapy effective against PCa remains unavailable. Pyroptosis, a novel immunotherapeutic modality for cancer, promotes systemic immune responses leading to immunogenic cell death in solid tumors. This paper describes the preparation and analysis of PSMAscFv-EVN-GSDMD; this genetically engineered recombinant extracellular vesicle (EV) expresses a single-chain variable antibody fragment (scFv) with high affinity for prostate-specific membrane antigen (PSMA) on their surfaces and is loaded with the N-terminal domain of gasdermin D (GSDMD). Both in vitro and in vivo, PSMAscFv-EVN-GSDMD effectively targeted PSMA-positive PCa cells and induced pyroptosis through the carrier properties of EVs and the specificity of PSMAscFv. In the 22RV1 and PSMA-transfected RM-1-inoculated PCa mouse models, PSMAscFv-EVN-GSDMD efficiently inhibited tumor growth and promoted tumor immune responses. In conclusion, PSMAscFv-EVN-GSDMD can convert the immunosuppressive “cold” tumor microenvironment of PCa into an immunogenic “hot” tumor microenvironment.

前列腺癌 (PCa) 与免疫原性差和淋巴细胞浸润有关,目前仍无法获得对 PCa 有效的免疫疗法。焦亡是一种新型癌症免疫治疗方式,可促进全身免疫反应,导致实体瘤中的免疫原性细胞死亡。本文介绍了 PSMAscFv-EV N-GSDMD 的制备和分析;这种基因工程重组细胞外囊泡 (EV) 表达对其表面的前列腺特异性膜抗原 (PSMA) 具有高亲和力的单链可变抗体片段 (scFv),并加载了 gasdermin D (GSDMD) 的 N 端结构域。PSMAscFv-EV N-GSDMD 在体外和体内均有效靶向 PSMA 阳性 PCa 细胞,并通过 EVs 的载体特性和 PSMAscFv 的特异性诱导细胞焦亡。在 22RV1 和 PSMA 转染的 RM-1 接种的 PCa 小鼠模型中,PSMAscFv-EV N-GSDMD 有效抑制肿瘤生长并促进肿瘤免疫反应。总之,PSMAscFv-EV N-GSDMD 可以将 PCa 的免疫抑制性“冷”肿瘤微环境转化为免疫原性“热”肿瘤微环境。