雜志名稱:Biomaterials
影響因子:12.8
文章題目: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
作者單位:
西安市人民醫(yī)院(西安市第四醫(yī)院)泌尿外科西北大學生命科學與醫(yī)學學院
空軍醫(yī)科大學免疫學系腫瘤生物學國家重點實驗室
西安空軍醫(yī)科大學衛(wèi)生服務基地
延安大學基礎醫(yī)學院免疫學系
空軍醫(yī)科大學生物化學與分子生物學教研室腫瘤生物學國家重點實驗室
引用YOBIBIO產(chǎn)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) 與免疫原性差和淋巴細胞浸潤有關,目前仍無法獲得對 PCa 有效的免疫療法。焦亡是一種新型癌癥免疫治療方式,可促進全身免疫反應,導致實體瘤中的免疫原性細胞死亡。本文介紹了 PSMAscFv-EV N-GSDMD 的制備和分析;這種基因工程重組細胞外囊泡 (EV) 表達對其表面的前列腺特異性膜抗原 (PSMA) 具有高親和力的單鏈可變抗體片段 (scFv),并加載了 gasdermin D (GSDMD) 的 N 端結構域。PSMAscFv-EV N-GSDMD 在體外和體內(nèi)均有效靶向 PSMA 陽性 PCa 細胞,并通過 EVs 的載體特性和 PSMAscFv 的特異性誘導細胞焦亡。在 22RV1 和 PSMA 轉染的 RM-1 接種的 PCa 小鼠模型中,PSMAscFv-EV N-GSDMD 有效抑制腫瘤生長并促進腫瘤免疫反應?傊,PSMAscFv-EV N-GSDMD 可以將 PCa 的免疫抑制性“冷”腫瘤微環(huán)境轉化為免疫原性“熱”腫瘤微環(huán)境。