乳腺癌免疫体含有众多共享的瘤抗原
Eralda Kina1,2, Jean-Philippe Laverdure1, Chantal Durette1
1Institute for Research in Immunology and Cancer (IRIC), and.
The Journal of clinical investigation
|October 31, 2023
概括
研究人员在激素受体阳性 (HR+) 和三阴性乳腺癌 (TNBC) 中表征了瘤抗原. 他们在TNBC中更频繁地确定了瘤特异性抗原 (TSA),与更好的生存率相关,并支持免疫治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 蛋白质组学是指蛋白质组学.
背景情况:
- 激素受体阳性 (HR+) 乳腺癌在免疫学上是"冷"的,对当前的免疫疗法没有反应.
- 三阴性乳腺癌 (TNBC) 显示出更高的免疫细胞透率,并从检查点阻塞疗法中获益.
- CD8+ T 细胞在瘤细胞上识别主要基因相容性复杂I相关 (MAP).
研究的目的:
- 在HR+和TNBC亚型中对MAP的曲目进行描述.
- 为癌症免疫治疗确定潜在的瘤特异性抗原 (TSA) 和瘤相关抗原 (TAA).
- 研究抗原流行,免疫透和患者存活率之间的相关性.
主要方法:
- 质谱法被用来识别和量化26个原发性乳腺癌样本的MAP.
- 生物信息分析被用于从已识别的MAP中识别TSA和TAA.
- 进行了体外T细胞测试,以确认已识别的抗原的免疫性.
主要成果:
- 确定了超过57,000个独特的MAP,其中HR+和TNBC之间的源基因在很大程度上重叠.
- 确定了25个TSA,主要在TNBC中,并且在癌症基因组图谱 (TCGA) 数据库中的TNBC样本中更普遍.
- 在TNBC中TSA患病率与白细胞透和整体存活率正相关,表明体内免疫性.
结论:
- 该研究确定了HR+和TNBC的乳腺癌免疫治疗的众多潜在目标.
- 在TNBC中,共享的TSA的流行率更高,为其对检查点封锁免疫疗法的反应提供了强有力的理由.
- 已识别的TSA和TAA在体外表现出免疫性,支持它们作为治疗点的潜力.
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