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一种基于LCMV的复制疫苗用于治疗固体瘤

Mette-Triin Purde¹, Jovana Cupovic¹, Yannick A Palmowski²

¹Institute of Immunobiology, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland.

Molecular therapy : the journal of the American Society of Gene Therapy

|December 7, 2023

概括

复制病毒载体是打破对瘤相关抗原的免疫耐受性的关键,提高了癌症疫苗的疗效. 在临床前模型中,将这些疫苗与采用性T细胞疗法结合起来,导致瘤完全被排斥.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
病毒学病毒学

背景情况:

有效的癌症免疫疗法需要向瘤抗原,包括自我抗原,这些抗原通常受到免疫耐受性的影响.
克服对自身抗原的免疫耐受性是当前癌症免疫疗法的重大挑战.
诱导针对瘤相关抗原的强有力的免疫反应仍然很困难.

研究的目的:

在临床前黑色素瘤模型中研究编码瘤相关自身抗原 (TRP2) 的基于病毒载体的癌症疫苗的疗效.
确定病毒载体复制在破坏对自我抗原的免疫耐受性方面的作用.
评估复制病毒载体与采用T细胞治疗的组合.

主要方法:

利用了基于淋巴细胞冠状腺炎病毒 (LCMV) 的载体编码TRP2自身抗原.
在已建立的黑色素瘤小鼠模型中使用复制和非复制病毒载体.
结合病毒载体免疫与TRP2特异性T细胞的采用转移.

主要成果:

基于LCMV的载体的复制对于打破免疫耐受性和诱导CD8+ T细胞对自身抗原的反应至关重要.
用复制载体进行免疫接种,结合采用T细胞移植,导致瘤完全被排斥.
复制载体促进了抗原持久性,高效的T细胞原始化,以及"冷"瘤转化为"热"瘤.

结论:

在癌症疫苗中,复制病毒载体对于克服自身抗原耐受性至关重要.
复制病毒载体和采用T细胞转移的组合疗法在治疗已建立的黑色素瘤方面显示出显著的前景.
这些发现为设计下一代针对固体癌症的免疫疗法提供了见解.

关键词:

收养细胞转移的收养细胞转移癌症免疫疗法免疫疗法黑色素瘤是一种黑色素瘤.自己抗原的自我抗原.基于病毒载体的疫苗.

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