系统性RNA输送到树突细胞利用抗病毒防御进行癌症免疫治疗
Lena M Kranz1,2, Mustafa Diken1,3, Heinrich Haas3
1TRON-Translational Oncology at the University Medical Center of the Johannes Gutenberg University gGmbH, Freiligrathstr. 12, Mainz 55131, Germany.
Nature
|June 10, 2016
概括
静脉注射的RNA- lipoplex (RNA- LPX) 在体内有效向树突细胞 (DCs) 进行强烈的T细胞反应. 这种新型疫苗平台诱导了强大的适应性和先天性免疫力,
科学领域:
- 免疫学
- 疫苗学
- 纳米技术
背景情况:
- 淋巴体器官是T细胞培养的理想选择,但对树突细胞 (DCs) 的系统性抗原传递面临挑战.
- 在体内有效准DC对于疫苗开发至关重要.
研究的目的:
- 开发一种使用RNA-lipoplex (RNA-LPX) 的精确有效的体内定位方法.
- 评估RNA-LPX在癌症免疫治疗中的免疫性和治疗潜力.
主要方法:
- 通过静脉注射的RNA- lipoplex (RNA- LPX) 具有最佳的直流向的净电荷.
- 在淋巴细胞区内评估RNA-LPX吸收,抗原表达和免疫反应.
- 在临床前模型中评估T细胞反应和瘤排斥.
- 在黑色素瘤患者的第一阶段临床试验.
主要成果:
- 在体内,RNA-LPX有效地向DC和巨细胞,保护RNA并使抗原表达成为可能.
- RNA-LPX引发的干扰素α (IFNα) 释放,DC成熟,以及类似病毒的炎症反应.
- RNA-LPX诱导了强大的效应和记忆T细胞反应,并调解了IFNα依赖的瘤排斥.
- 早期临床试验数据显示IFNα诱导和强大的抗原特异性T细胞反应在黑色素瘤患者.
结论:
- 优化RNA-LPX代表了系统性DC向的普遍适用的疫苗类别.
- 这种平台同步了强大的适应性和I型IFN介导的先天免疫力,用于癌症免疫治疗.
- RNA-LPX显示出开发下一代癌症疫苗的巨大潜力.
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