当前位置:首页>郑州>郑州大学刘灶渠等团队Cancer Research!巨噬细胞催生衰老成纤维细胞,揭开结直肠癌化疗耐药核心机制

郑州大学刘灶渠等团队Cancer Research!巨噬细胞催生衰老成纤维细胞,揭开结直肠癌化疗耐药核心机制

  • 2026-08-10 10:24:17
郑州大学刘灶渠等团队Cancer Research!巨噬细胞催生衰老成纤维细胞,揭开结直肠癌化疗耐药核心机制

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结直肠癌常年位列全球高发恶性肿瘤榜单,同时是致死率第二的癌症类型,外科手术联合化疗是现阶段标准一线干预方案,但化疗耐药会大幅削弱治疗效果、缩短患者生存期,是临床亟待攻克的难题。近年研究证实,肿瘤微环境内部各类细胞的交叉通讯,是诱发耐药、推动肿瘤恶化的核心诱因。肿瘤相关巨噬细胞可释放多种细胞因子、趋化因子重塑微环境,促进肿瘤侵袭与药物抵抗;癌症相关成纤维细胞作为间质核心细胞,也能通过多条通路提升癌细胞化疗耐受。细胞衰老本是机体阻断突变细胞增殖的保护机制,但衰老细胞会启动 SASP 分泌程序,释放大量炎症、促瘤因子,反向构建利于肿瘤进展的微环境。现有研究已证实肿瘤细胞、免疫细胞衰老会造成治疗失效,不过癌症相关成纤维细胞存在高度异质性,衰老型 CAFs 在结直肠癌中的功能、调控通路尚不清晰,且行业缺少精准识别衰老 CAFs 的统一标志物,极大限制了相关机制与靶向疗法的探索,基于多组学、动物模型系统解析衰老 CAFs 的上游诱导通路与下游耐药效应,具备重要临床转化价值。

在这项研究中,研究人员联合郑州大学、武汉大学、伦敦大学多机构团队,近日于《Cancer Research》刊发完整研究成果。团队整合 12 种机器学习算法搭建细胞衰老预测模型 CSPM,依托单细胞转录组数据实现衰老型癌症相关成纤维细胞(sCAFs)精准鉴定,临床样本分析证实结直肠癌病灶内 sCAFs 数量越多,患者化疗应答越差、远期预后越不理想。研究人员依托皮下移植瘤、患者来源类器官、类器官异种移植瘤、原位肿瘤四类临床前模型开展功能验证,确认 sCAFs 依靠 SASP 表型诱导化疗抵抗,IL6、CXCL12 是介导耐药的关键分泌分子。空间转录组与多重免疫组化结果显示,分泌 IL1B 的巨噬细胞和携带 IL1R1 受体的 sCAFs 在肿瘤间质紧密相邻,存在直接信号交流;研究构建成纤维细胞特异性 Il1r1 基因敲除小鼠,从基因层面证实巨噬细胞分泌的 IL1B 与成纤维细胞表面 IL1R1 结合后,会诱导 CAFs 进入衰老状态,持续累积的 sCAFs 依靠 SASP 通路最终造成结直肠癌化疗失效,完整理清了巨噬细胞调控基质细胞衰老、介导耐药的完整分子链条。

该系列研究完整阐明了结直肠癌微环境中巨噬细胞、衰老型成纤维细胞的互作致病通路,明确 sCAFs 是调控化疗敏感性、决定患者预后的关键间质细胞亚群,填补了衰老 CAFs 在结直肠癌耐药领域的机制空白。从基础机制层面,研究证实 IL1B-IL1R1 信号轴是巨噬细胞诱导 CAFs 衰老的核心通路,IL6 与 CXCL12 是衰老细胞释放、介导化疗抵抗的核心效应分子,空间共定位证据进一步支撑两类细胞存在稳定、直接的信号交互。从临床转化层面,CSPM 机器学习模型可依托单细胞测序数据快速识别 sCAFs,有望成为评估结直肠癌患者化疗获益、预判预后的新型工具;成纤维细胞 Il1r1 敲除动物实验证明,阻断 IL1B 与 IL1R1 的相互作用能够抑制 CAFs 衰老、逆转肿瘤化疗耐药。该成果提示靶向 IL1B-IL1R1 信号通路、清除衰老基质细胞、抑制 SASP 因子释放三类干预思路,均可用于优化结直肠癌化疗方案,为开发新型联合抗肿瘤疗法提供可靠实验依据,也为后续衰老靶向药物、炎症通路抑制剂的临床应用奠定理论基础。

自然基金本子没思路,不知道怎么写?强烈推荐自然基金项目申报书参考范文合集。
1.靶向线粒体钙单向转运体MCU调控肿瘤铁死亡诱导巨噬细胞极化增强抗肿瘤免疫的机制研究
2. 骨髓微环境中TLR2-MyD88信号调控BMDC亚群极化及Treg功能失调在再生障碍性贫血发病中的作用及机制研究
3. 肿瘤细胞支链酮酸通过代谢重编程髓系来源抑制细胞促进肿瘤免疫逃逸的分子机制研究
4. 酶响应脂质体透软骨递送及骨关节炎软骨降解微环境协同调控治疗研究

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  1. CONNECT:[ UseTime:0.001296s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.002351s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000635s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000530s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001742s ]
  6. SELECT * FROM `set` [ RunTime:0.000460s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001588s ]
  8. SELECT * FROM `article` WHERE `id` = 574591 LIMIT 1 [ RunTime:0.000424s ]
  9. UPDATE `article` SET `lasttime` = 1786410517 WHERE `id` = 574591 [ RunTime:0.003517s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000580s ]
  11. SELECT * FROM `article` WHERE `id` < 574591 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000761s ]
  12. SELECT * FROM `article` WHERE `id` > 574591 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000662s ]
  13. SELECT * FROM `article` WHERE `id` < 574591 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001209s ]
  14. SELECT * FROM `article` WHERE `id` < 574591 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001063s ]
  15. SELECT * FROM `article` WHERE `id` < 574591 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000981s ]
0.075827s