描述和预测COAD中MUC突变导致的新抗原
Min Chen1, Xin Zhang2, Zihe Ming3
1Clinical Central Research Core, Shanxi Bethune Hospital, Shanxi Medical University, Taiyuan, Shanxi, China. mchenst@outlook.com.
Journal of translational medicine
|March 28, 2024
概括
这项研究确定了在结肠腺癌 (COAD) 中具有治疗潜力的新型MUCmut新抗原. 这些MUCmut新抗原具有免疫原性,可以提高COAD患者的免疫疗法的有效性.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 生物信息学是一种生物信息学.
背景情况:
- 结肠腺癌 (COAD) 免疫疗法面临着影响治疗有效性的挑战.
- 新抗原由于其瘤特异性和免疫性,是癌症免疫治疗的关键标.
- 确定MUC体突变 (MUCmut) 作为COAD中潜在的瘤抗原是一个关键的研究领域.
研究的目的:
- 识别和预测来自COAD中MUC体突变 (MUCmut) 的潜在瘤抗原.
- 评估MUCmut与瘤特征,预后和瘤微环境之间的关联.
- 预测来自MUCmut的高可靠性新酸,用于潜在的免疫疗法应用.
主要方法:
- 利用TCGA,TIMER2.0和cBioPortal数据库对2242名COAD患者进行关联分析.
- 在531名COAD患者中使用TSNAdb和差异性亚格托皮性指数 (DAI) 来预测MUCmut中的新.
- 通过比较MUCmutHLA与野生类型的结合亲和力来计算DAI.
主要成果:
- 在MUC16,MUC17,MUC5B,MUC2,MUC4和MUC6中,突变频率很高.
- MUC16和MUC4突变与较长的DFS和PFS相关;MUC13和MUC20与较短的OS相关.
- 突变MUC家族成员与更高的TMB,MSI,淋巴细胞透和免疫检查点基因表达有关.
- 确定了452个SNV,57个SNV,1个Q-frame转移和157个MUCmut的INDEL,其中10个由DAI预测的高可信度新.
结论:
- 突变MUC家族衍生的新抗原显示出显著的免疫性和治疗潜力.
- 结合TSNAdb和DAI,成功发现了新的MUCmut新抗原.
- 这些已识别的MUCmut新抗原代表了推进COAD免疫治疗的有希望的目标.
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