北京大学学报(医学版) ›› 2022, Vol. 54 ›› Issue (2): 203-208. doi: 10.19723/j.issn.1671-167X.2022.02.001
• 论著 • 下一篇
DING Ting-ting,ZENG Chu-xiong,HU Li-na,YU Ming-hua()
摘要:
目的: 研究结直肠癌组织的免疫细胞浸润与临床预后之间的相关性。方法: 从癌症基因组图谱(the can-cer genome atlas,TCGA)中提取结直肠癌数据,基于反卷积算法(CIBERSORT)分析评估结直肠癌组织中22种肿瘤浸润性免疫细胞(tumor-infiltrating immune cells,TIICs)的浸润模式,以确定不同TIICs表达程度与5年生存率之间的关联。使用条形图展示结直肠癌样本中TIICs比例,绘制矩阵图分析不同TIICs之间的相关性。结果: 共从 TCGA数据库中提取了473例结直肠癌组织和41个正常对照组织,对比分析表明,结直肠癌组织中各种TIICs比例存在差异。在研究的细胞亚群中,结直肠癌组织中M0、M1和M2巨噬细胞和单核细胞的比例相对较高,而B细胞和中性粒细胞的比例相对较低。TIICs的比例与患者的TNM分期及临床分级显著相关:静息NK细胞、CD8+T细胞、浆细胞与T期相关,活化树突状细胞与N期相关,嗜酸性粒细胞、M1巨噬细胞及活化肥大细胞与M期相关,M1巨噬细胞和单核细胞与临床分级相关。生存分析结果显示,活化的树突状细胞与结直肠癌患者的5年生存率呈正相关,幼稚CD4+T细胞与5年生存率呈负相关。结论: 分析结直肠癌患者肿瘤组织TIICs亚群比例具有潜在的临床预后价值,可通过其识别可能从化疗中受益的患者,并预测新药的可能靶点。
中图分类号:
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