对S100A9的病毒纳米粒子疫苗可以减少肺瘤的播种和转移
Young Hun Chung1,2, Oscar A Ortega-Rivera3, Britney A Volckaert3
1Department of Bioengineering, University of California, San Diego, CA 92093.
概括
一种针对S100A9的新型疫苗在小鼠模型中有效地防止癌症转移到肺部. 这种S100A9疫苗通过调节免疫反应来减少瘤的扩散,提供了对转移性疾病的有希望的策略.
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:
- 转移性癌症是癌症死亡的主要原因,这对治疗提出了重大挑战.
- S100A9被确定为炎症的关键调节剂,也是建立肺部前转移性利基的关键因素.
研究的目的:
- 开发和评估针对S100A9的新型候选疫苗,以预防癌症转移.
- 调查S100A9疫苗在临床前癌症模型中减少肺转移的疗效.
主要方法:
- 使用植物病毒衍生和病毒类粒子平台开发S100A9疫苗.
- 在多个癌症转移的小鼠模型中测试疫苗的疗效,包括乳腺癌和黑色素瘤.
- 在接种疫苗和对照组中分析免疫反应,细胞因子概况和免疫细胞种群.
主要成果:
- 在转移性小鼠模型中,S100A9疫苗显著降低了肺瘤的播种和生长.
- 疫苗引起的抗体对S100A9表现出高特异性,没有对S100A8.8的交叉反应.
- 接种疫苗导致S100A9水平降低,免疫刺激性细胞因子 (IL-12,IFN-γ) 增加,免疫抑制性细胞因子 (IL-10,TGF-β) 减少,以及肺部髓质衍生抑制细胞减少.
结论:
- 在临床前模型中,S100A9疫苗有效预防和减少肺转移.
- 用疫苗准S100A9调节瘤微环境,以促进抗瘤免疫反应.
- 这些发现支持开发针对S100A9的疫苗,作为对抗癌症转移的潜在疗法,因为S100A9在各种癌症中的过度表达.
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