IL-12和PD-1的组合基因疗法用于治疗黑色素瘤
Loree C Heller1, Guilan Shi1, Amanda Sales Conniff1
1Department of Medical Engineering, University of South Florida, Morsani College of Medicine and College of Engineering, 12901 Bruce B. Downs Blvd., MDC111, Tampa, FL 33612, USA.
Molecular therapy. Nucleic acids
|August 23, 2024
概括
介素-12基因电转移 (GET) 显示出固体瘤回归的前景. 将IL-12 GET与PD-1/PD-L1阻断结合起来,可以增强治疗效果,提供一种潜在的新型癌症治疗方法.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 介素-12基因电转移 (GET) 有效地诱导各种固体瘤的瘤回归.
- 免疫检查点抑制剂,如抗编程细胞死亡蛋白1 (PD-1) 抗体,增强治疗疗效.
- 结合IL-12等离子体GET (pIL-12 GET) 与抗PD-1抗体已经进入临床试验阶段.
研究的目的:
- 设计可编码PD-1联体1 (PD-L1) 结合区域的和质粒,其结合区域同类于pembrolizumab和nivolumab.
- 为了研究内的表达是否可以阻止PD-1/PD-L1结合,以实现成本效益的癌症治疗.
- 评估pIL-12 GET和质体的组合,以提高治疗结果.
主要方法:
- 设计的和质粒模仿pembrolizumab和nivolumab的PD-L1结合区域.
- 评估了pembrolizumab *in vitro* 的小鼠同类的PD-1/PD-L1 阻断活性.
- 输送的等离子体DNA通过内 * in vivo * 和瘤细胞 * in vitro *.
- 分析了免疫调节剂,PD-L1 mRNA,以及等离子体递送后的蛋白质表达.
- 测试了pIL-12 GET和等离子体的联合治疗.
主要成果:
- 在小鼠中,布罗利祖马布的同类药物有效地阻断了PD-1/PD-L1结合的*in vitro*.
- 内体质粒的输送导致质与瘤细胞的PD-L1结合.
- 血DNA输送上调免疫调节剂和PD-L1mRNA和蛋白质 *in vivo*和 *in vitro*.
- 结合pIL-12 GET和pembrolizumab同源等离子体,增强了治疗疗效.
结论:
- 内表达PD-L1结合区域是一种可行的策略来阻止PD-1/PD-L1相互作用.
- 塑DNA输送增强了抗瘤免疫力和PD-L1表达,增强了治疗.
- 将pIL-12 GET与编码PD-1/PD-L1阻断的等离子体结合起来,为固体瘤治疗提供了一个有前途的策略.
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