鉴定HPV16阳性宫癌子集,其特征是异异的免疫和瘤原体表型,对免疫治疗有潜在影响
Abhisikta Ghosh1, Arnab Ghosh1, Abarna Sinha1
1National Institute of Biomedical Genomics, Kalyani, West Bengal, India.
概括
这项研究在HPV16阳性宫癌 (CaCx) 中确定了两种免疫亚型. 代表41%的患者的B亚型显示免疫丰富和攻击性特征,表明免疫治疗可能有好处.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 基因组学就是基因组学.
背景情况:
- 宫癌 (CaCx) 呈现出显著的分子异质性,影响治疗反应,特别是免疫治疗.
- 发展中国家的高CaCx死亡率与由于查有限而导致的晚期诊断有关,需要新的治疗策略,如免疫疗法.
研究的目的:
- 为了研究HPV16阳性CaCx.的瘤免疫异质性.
- 识别基于免疫基因的生物标志物,用于异质性和对免疫治疗有反应的患者子集.
- 描述与癌症相关的表型,包括病毒载量,以及它们与瘤免疫性和瘤性之间的关系.
主要方法:
- 44名HPV16阳性CaCx患者的RNA测序 (RNA-seq) 分析.
- 无监督的等级聚类,以根据基因表达识别免疫亚型.
- 通过估计RNA转录的相对子集的细胞类型识别 (CIBERSORT) 来量化免疫细胞透.
- 差异基因表达,通路丰富和qRT-PCR用于病毒载荷分析.
主要成果:
- 确定了两种不同的CaCx免疫亚型:A亚型 (59%) 和B亚型 (41%).
- 与A亚型相比,B亚型的免疫基因表达,CD8+T细胞透和PD-1/PD-L1联合表达显著提高.
- 一个由十个基因组成的小组被确定为分类这些亚型的潜在生物标志物,B亚型显示较低的病毒载量,但更具侵略性的表型.
- 亚型B表现出表明生物攻击性增加和癌症进展的特征.
结论:
- 在印度,大约41%的HPV16阳性CaCx患者出现了免疫丰富的,攻击性的瘤表型.
- 这些已识别的亚型是受益于针对免疫检查点或瘤透淋巴细胞的免疫疗法的强有力的候选人.
- 这项研究为改善印度和其他发展中国家侵略性CaCx的治疗策略提供了途径.
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