一种基于Accum-E7蛋白质的工程疫苗,具有双重抗宫癌活性
Jean-Pierre Bikorimana1, Jamilah Abusarah2, Marina Gonçalves3
1Department of Microbiology, Infectious Diseases and Immunology, Université de Montréal, Montréal, Quebec, Canada.
Cancer science
|January 30, 2024
概括
一种新型的Accum-E7疫苗 (aE7) 显示出对小鼠宫癌的完全保护,并有效地控制了瘤的治疗生长. 这种工程蛋白质疫苗展示了临床开发的预防和治疗潜力.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 疫苗开发 疫苗开发
背景情况:
- 由于HPV疫苗,子宫癌发病率有所下降,但现有的治疗方法对已建立的瘤缺乏有效性,导致并发症.
- 目前的预防性疫苗对已建立的瘤无效,造成治疗选择的未满足的医疗需求.
研究的目的:
- 设计和评估一种基于E7蛋白质的新型疫苗配方 (Accum-E7,aE7),使用AccumTM技术增强蛋白质输送.
- 在临床前模型中评估aE7疫苗对宫癌的预防和治疗疗效.
主要方法:
- 小鼠被预防性地用aE7接种疫苗,并用C3.43宫癌细胞挑战.
- 在携带瘤的小鼠中评估治疗疗效,这些小鼠单独接受aE7治疗或与免疫检查点阻断剂 (anti-PD-1,anti-CTLA4,anti-CD47) 结合治疗.
- 分析了幽默和细胞免疫反应,机械学研究确定了关键的免疫细胞.
主要成果:
- 预防性aE7疫苗接种对小鼠的宫癌提供了完全的保护.
- aE7疫苗诱导了强大的幽默反应,优于裸体E7蛋白,并在体外抑制了C3.43细胞的增殖.
- 用aE7与免疫检查点阻断剂协同治疗,以控制瘤生长,需要CD8 T细胞,树突细胞,CD4+和CD19+淋巴细胞.
- 实验室良好实践研究证实了aE7在小鼠中的免疫性,耐受性和安全性.
结论:
- 艾库姆-E7疫苗 (aE7) 显示出作为预防性和治疗性宫癌剂的巨大潜力.
- 由于其双重活性和有利的安全性,aE7代表了进一步临床开发的有希望的疫苗候选者.
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