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T细胞原始化转录基因标记:免疫组异质性对精密免疫疗法的影响
Hirotaka Miyashita1, Razelle Kurzrock2,3, Nicholas J Bevins4
1Department of Hematology and Oncology, Dartmouth Cancer Center, Lebanon, NH, USA. miyashita.hirotaka@gmail.com.
NPJ genomic medicine
|August 8, 2023
概括
向T细胞原始标记物 (TPM) 可能增强癌症免疫疗法. 多种TPM表达模式与PD-L1,MSI-H和TMB等生物标志物相关,这表明可以为优化治疗选择个性化的患者.
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:
- 免疫检查点封锁 (ICB) 仅对一小部分癌症患者有益.
- 准T细胞原始标记物 (TPM) 显示有可能提高ICB的疗效.
- 由于瘤免疫异质性,TPM的临床应用是复杂的.
研究的目的:
- 为了分析15个TPMs在泛癌队列中的表达.
- 研究TPM表达和关键癌症生物标志物之间的相关性.
- 探索TPM免疫基因配置文件优化癌症免疫疗法的潜力.
主要方法:
- 在30种癌症类型的514名患者中对15个TPM进行了转录组分析.
- 与组织类型,微卫星不稳定性高 (MSI-H),瘤突变负担 (TMB) 和PD-L1表达的相关性分析.
- 基于TPM表达的层次分类,将瘤分为"热"",混合"或"冷".
主要成果:
- TPM表达与组织学类型没有显著的关联.
- 在MSI-H,高TMB (≥10突变/mb) 和PD-L1表达 (≥1%) 的瘤中,GZMB和IFNG表达更高.
- PD-L1表达 (≥1%) 与较高的CD137,GITR和ICOS表达相关. 瘤被分为不同的免疫学群,其中"冷"的群具有较少的PD-L1表达.
结论:
- 在癌症中存在不同的TPM表达模式,独立于组织学.
- TPM 概况与已确定的免疫疗法生物标志物 (PD-L1,MSI-H,TMB) 相对应.
- 基于TPM免疫学概况的个性化患者选择可能会提高免疫治疗结果.
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