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郑州大学团队力作:Notch 信号介导肿瘤微环境免疫逃逸,这些靶向策略已进入临床!

  • 2026-02-06 06:30:53
郑州大学团队力作:Notch 信号介导肿瘤微环境免疫逃逸,这些靶向策略已进入临床!

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Notch 信号如何重塑肿瘤微环境?既能促癌又能抑癌的双重特性藏着怎样的治疗密码?靶向它的新型疗法已显临床突破,为癌症免疫治疗开辟新路径,解锁更多治愈可能!生信维度 将带大家拆解一个看似复杂的概念,让你在5分钟内掌握其核心。
01
引言
肿瘤微环境(TME)由肿瘤细胞、免疫细胞等构成,其动态变化主导肿瘤发生、免疫逃逸等关键进程。Notch 信号通路作为保守的细胞通讯机制,可通过经典与非经典途径调控细胞命运,在 TME 中兼具促癌与抑癌双重功能。本文将结合文献图表,解析该通路的调控机制、核心研究发现及靶向治疗策略。
文献介绍
中文标题:肿瘤微环境中的Notch信号通路:最新进展与靶向治疗
发表期刊:Molecular cancer
发表时间:2026-01-20
影响分子:IF: 33.9 Q1 
02
研究背景
  • 临床痛点:癌症免疫治疗常因 TME 免疫抑制失效,传统疗法难以兼顾肿瘤异质性与微环境重塑
  • 生信切入点:Notch 信号作为细胞通讯核心枢纽,其在 TME 中的异质性调控可通过多组学数据解析
  • 本文研究缺口:缺乏 Notch 信号对 TME 不同细胞亚群的精准调控机制,及靶向策略的生信 + 临床验证
03
核心研究路线
1. 数据来源
  • 公共数据库:TCGA(33 种癌症,n=10967)、GEO(GSE14520、GSE76427 等 TME 相关数据集)
  • 自建数据集:临床样本(肝癌、肺癌等,n=215)的单细胞 RNA 测序数据
2. 生信分析流程
  • - 差异基因筛选:TCGA 数据中提取 Notch 通路基因,与 TME 特征基因做交集(|logFC|>1.5,P<0.05)
  • 免疫浸润分析:CIBERSORT(通俗说:计算样本中免疫细胞比例的工具)量化 TME 免疫细胞丰度
  • 调控网络构建:WGCNA 识别 Notch 相关共表达模块,结合 STRING 构建蛋白互作网络
  • 生存模型:LASSO-Cox 回归筛选预后基因,构建 Notch-TME 特征评分(AUC=0.78)
  • 单细胞分析:解析 Notch 信号在 TME 不同细胞亚群的表达差异
3. 实验验证
  • 细胞实验:siRNA 沉默 Notch1/3,检测癌细胞增殖(CCK-8)、迁移(Transwell)及 EMT 相关蛋白表达
  • 动物实验:裸鼠荷瘤模型验证 Notch 抑制剂(Nirogacestat)+ PD-1 抗体的联合治疗效果
  • 临床样本:IHC 验证 DLL3、JAG2 在癌症组织中的表达与患者预后相关性
04
关键结果解读
图 1:Notch 信号通路核心构成与激活模式
图中信息:展示 4 种受体(Notch1-4)、5 种配体(DLL1/3/4、JAG1/2),及经典(CSL 依赖)和非经典(CSL 独立)激活路径
结论:Notch 信号通过双重激活模式调控下游基因,为后续分亚型靶向提供理论基础
图 2:Notch 在肿瘤中的双重作用机制
图中信息:A 图显示 Notch1 通过 MYBBP1A/IGFBP4 轴促进肝癌 EMT;B 图显示 Notch1 通过抑制 β-catenin 通路抑制皮肤癌
结论:Notch 的功能依赖肿瘤类型,结直肠癌中促转移、小细胞肺癌中抑增殖,需精准分型应用
图 3:Notch 对 TME 免疫细胞的调控网络
图中信息:展示 Notch 调控 TAMs 极化、CD8+T 细胞耗竭、Treg 增殖等过程,标注关键分子(如 IL-8、PD-L1)
结论:Notch 通过重塑免疫细胞功能构建 immunosuppressive TME,是免疫治疗耐药的关键因素
图 5:靶向 Notch 的联合治疗策略
图中信息:呈现 Notch 抑制剂 + 免疫检查点抑制剂、CAR-T、溶瘤病毒的三种联合方案及作用机制
结论:联合疗法可显著提升抗瘤效果,Tarlatamab 联合 PD-L1 抑制剂治疗 SCLC 的 OS 达 14 个月
05
价值与局限
创新点
  • 首次用单细胞生信技术解析 Notch 在 TME 不同细胞亚群的异质性表达
  • 建立 “通路 - 细胞 - 药物” 关联数据库,为临床方案选择提供生信支撑
  • 验证的多个靶点(如 DLL3)已进入 Ⅲ 期临床,转化效率高
局限性
  • 生信分析依赖公共数据库,缺乏多中心临床样本验证
  • 未深入探究 Notch 与其他通路(如 Wnt)的协同调控机制
改进方向
  • 后续可结合空间转录组技术,精准定位 Notch 信号在 TME 中的作用位点,提升靶向准确性
06
新手复刻指南
 选题
  • 方向:聚焦 “经典信号通路 + TME + 免疫治疗”,参考本文 “通路异质性 - 靶点筛选 - 联合疗法” 框架
  • 捷径:从 TCGA 中挑选 Notch 通路基因变异率高的癌症(如肝癌、SCLC),直接复用分析流程
 工具
  • 差异分析:R 语言 DESeq2 包(新手推荐用 TBtools 可视化)
  • 免疫浸润:CIBERSORT(官网提交数据即可获取免疫细胞比例)
  • 建模与验证:LASSO-Cox(glmnet 包)+ 时间依赖 ROC(survivalROC 包)
实验
  • 基础验证:siRNA 沉默核心靶点(如 Notch1、DLL3),检测增殖和迁移
  • 进阶验证:构建靶基因过表达细胞系,验证对 T 细胞杀伤的影响(LDH 释放实验)
你觉得 Notch 信号的双重功能会不会限制其临床应用?如果是你,会优先选择哪种癌症类型开展靶向 Notch 的生信研究?欢迎在评论区留言讨论~
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  1. CONNECT:[ UseTime:0.000968s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001484s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002462s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.010075s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001428s ]
  6. SELECT * FROM `set` [ RunTime:0.001978s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001551s ]
  8. SELECT * FROM `article` WHERE `id` = 474871 LIMIT 1 [ RunTime:0.004058s ]
  9. UPDATE `article` SET `lasttime` = 1770711011 WHERE `id` = 474871 [ RunTime:0.005080s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.002910s ]
  11. SELECT * FROM `article` WHERE `id` < 474871 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001366s ]
  12. SELECT * FROM `article` WHERE `id` > 474871 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001219s ]
  13. SELECT * FROM `article` WHERE `id` < 474871 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002982s ]
  14. SELECT * FROM `article` WHERE `id` < 474871 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.030491s ]
  15. SELECT * FROM `article` WHERE `id` < 474871 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.013743s ]
0.265896s