一种个性化癌症疫苗,可诱导协同作用的先天性和自适应性免疫反应
Da-Sol Kuen1, Jihye Hong2, Suyoung Lee1
1Laboratory of Immune Regulation, Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 08826, Seoul, Republic of Korea.
Advanced materials (Deerfield Beach, Fla.)
|May 30, 2023
概括
来自急性髓性白血病 (AML) 细胞的细胞外纳米纤维激活先天性和适应性免疫力,提供个性化癌症疫苗. 这种方法绕过了新抗原的识别,减少了AML的负担,改善了生存率.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 纳米技术 纳米技术
背景情况:
- 有效的癌症疫苗需要激活先天性和适应性免疫细胞.
- 个性化癌症疫苗面临的挑战是由于癌细胞异质性和需要新抗原鉴定.
- 目前针对急性髓性白血病 (AML) 的治疗策略存在局限性.
研究的目的:
- 作为个性化治疗疫苗,提供来自α-galactosylceramide结合的异体AML细胞 (ECNV-αGC) 衍生的细胞外纳米纤维.
- 为了证明ECNV-αGC可以在没有新抗原识别的情况下激活先天性和适应性免疫反应.
- 评估ECNV-αGC在减少AML负担和改善小鼠生存的疗效.
主要方法:
- 从与α-galactosylceramide相结合的自身AML细胞中产生ECNV-αGC的发展.
- 在 AML 的小鼠体内研究,以评估免疫细胞激活 (iNKT 细胞和 CD8+ T 细胞) 和抗白血病作用.
- 评估ECNV-αGC的抗原呈现能力和人类样本中iNKT细胞的激活.
主要成果:
- 在患有AML的小鼠中,ECNV-αGC疫苗接种激活了不变天然杀手T (iNKT) 细胞和白血病特异性CD8+ T细胞,促进了长期免疫记忆.
- ECNV-αGC作为抗原呈现平台,直接激活抗原特异性CD8+ T细胞,独立于树突细胞.
- 用ECNV-αGC接种疫苗显著降低了AML负担,并增加了在接受细胞胺治疗的小鼠中无白血病生存率.
- 人类AML衍生的ECNV-αGCs在健康个体和AML患者中激活了iNKT细胞,而不管先前的治疗反应如何.
结论:
- 自主AML衍生ECNV-αGCs代表了AML的一个有前途的个性化治疗疫苗策略.
- 这种方法通过激活先天性和适应性免疫反应,有效地建立了AML特异性的长期免疫力.
- ECNV-αGC绕过了新抗原识别的需要,简化了个性化癌症疫苗的开发.
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