作为一种瘤突变负担的特定基因,FAT1影响了头部和部状细胞癌症的免疫治疗效果
Haotian Cao1, Tianjun Lan1, Shijia Kuang1
1Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510010, China.
概括
瘤突变负担 (TMB) 是头癌免疫疗法的关键. 高TMB患者的FAT1基因突变表明免疫疗法耐药性和丰富的调节性T细胞,单细胞和树突细胞.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 免疫治疗是一种免疫疗法.
背景情况:
- 免疫疗法反应仍然是头部和部状细胞癌 (HNSCC) 治疗的挑战.
- 瘤突变负担 (TMB) 是一个预后指标,但缺乏精度.
- 在高TMB的HNSCC中研究基因突变和瘤微环境 (TME) 对精密治疗至关重要.
研究的目的:
- 研究TMB的分子特征及其与突变及其与HNSCC中的免疫微环境的关联.
- 为了确定特定的基因突变和TME组件,影响TMB高HNSCC患者的免疫治疗反应.
主要方法:
- 分析了33名HNSCC患者的下一代测序 (NGS) 数据,以计算TMB得分和组患者.
- 在TMB高的HNSCC中使用大量转录组和单细胞RNA测序 (scRNA-seq) 检查了免疫微环境.
- 使用癌症基因组图谱 (TCGA) 和患者队列中验证的发现,与TMB相关的突变模式.
主要成果:
- 在高TMB的HNSCC患者中,FAT1和LRP1B突变很普遍.
- FAT1突变与免疫疗法耐药性有关,并涉及与代谢相关的途径.
- 高TMB的样本显示了调节性T细胞 (Tregs),单细胞和树突细胞 (DCs) 的丰富.
结论:
- 在基于TMB的HNSCC免疫疗法中,FAT1基因可以作为预测药物耐药性的辅助生物标志物.
- Tregs,单细胞和DCs是富含高TMBHNSCC的关键免疫细胞群,影响治疗反应.
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