假定来自内微生物的免疫性:结直肠癌治疗的机会
Xiangyu Guan1,2,3, Fanyu Bu2, Yunyun Fu1,2
1College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
iScience
|December 6, 2024
概括
内微生物,特别是Fusobacterium nucleatum,可以产生由人类白细胞抗原 (HLA) -I在结直肠癌 (CRC) 中呈现的. 这些微生物衍生的激活CD8+T细胞反应,为癌症免疫治疗提供了新的途径.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 内微生物越来越被认可,但它们在塑造瘤免疫皮群中的作用尚不清楚.
- 免疫组,包括由人类白细胞抗原 (HLA) 分子呈现的,对于免疫监测和T细胞激活至关重要.
研究的目的:
- 开发和应用一种综合战略,用于在瘤微环境中识别微生物衍生的免疫.
- 研究这些微生物衍生在结直肠癌 (CRC) 的起源和特征.
主要方法:
- 使用综合识别策略对10名结直肠癌患者的免疫皮组进行分析.
- 基于 HLA-I 配体的质谱识别.
- 生物信息分析以区分微生物和人类衍生的.
- 通过已识别的微生物衍生来验证T细胞激活.
主要成果:
- 鉴定了154种潜在的微生物衍生的HLA-I配体,主要是细菌的.
- 来自*Fusobacterium nucleatum*,一种在CRC组织中普遍存在的细菌的的大量含量.
- 发现了20种*F.核*衍生的,其中13种是瘤特异性的.
- 实验证实,微生物衍生的可以激活CD8+ T细胞反应.
结论:
- 人类白细胞抗原 (HLA) -I分子在结直肠癌中存在来自内瘤微生物的.
- 微生物衍生的,特别是来自F.核,可以引起CD8+ T细胞的反应.
- 这些发现表明,开发针对微生物的癌症免疫疗法的新策略.
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