当前位置:首页>南京>IF52.7 恭喜南京医科大学孙跃明团队斩获《STTT》!单细胞+虚拟筛选挖出抗转移新靶点!

IF52.7 恭喜南京医科大学孙跃明团队斩获《STTT》!单细胞+虚拟筛选挖出抗转移新靶点!

  • 2026-05-30 17:06:01
IF52.7 恭喜南京医科大学孙跃明团队斩获《STTT》!单细胞+虚拟筛选挖出抗转移新靶点!

引言

结直肠癌肝转移5年生存率低于20%,现有靶向及免疫治疗效果有限,仍需揭示其分子机制。

2026年,南京医科大学孙跃明团队《Signal Transduction and Targeted Therapy》发表研究,细胞测序、虚拟筛选与经典分子验证完美结合,发现ENO2阳性癌细胞通过稳定MIF蛋白诱导M2型巨噬细胞极化,从而促进肝转移;小分子抑制剂吡硫醇可有效阻断这一过程。

这波操作有点东西!团队先用单细胞+空间转录组直接锁定了ENO2⁺癌细胞是肝转移的“幕后黑手”,再靠分子对接+动力学模拟从六千多化合物中精准钓出吡硫醇,专拆ENO2和MIF的CP,堵死M2极化通路。

手头有单细胞数据的话,照着做一轮CellChat和虚拟筛选,说不定下一个靶点就是你的~想复现却摸不到头绪?欢迎后台私信,发送关键词“思路”,获取最新发文风向!

文章核心架构速览

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文献解读

标题:ENO2驱动肿瘤细胞诱导的M2巨噬细胞极化促进结直肠癌癌症肝转移

发表期刊Signal Transduction And Targeted Therapy

发表时间:2026年5月

影响因子:IF52.7

思路解读

这篇文献的核心生信是单细胞测序 + 模块化分析:先用scRNA-seq描出CRLM的细胞图谱,再搞了一个“Module 11”基因集,精准锁定ENO2⁺的癌细胞亚群。接着用CellChat发现ENO2⁺细胞通过MIF通路疯狂“勾搭”巨噬细胞,诱导M2极化。

把代谢酶ENO2的非代谢“兼职”功能挖出来了,还筛到一个小分子抑制剂吡硫醇,干湿结合极度舒适,复现价值拉满。

材料与方法

数据来源:对3例非转移性CRC和3例CRLM患者的15份组织(原发灶、癌旁、肝转移灶)进行scRNA-seq;外部验证采用TCGA-COAD、GSE41258及TNMplot数据库。

分析设计:通过模块化分析筛选转移相关基因集(Module 11);利用CellChat解析细胞间通讯;Co-IP、GST pull-down及分子模拟验证蛋白互作;体内外(小鼠模型、类器官)及抑制剂实验进行功能验证。

设计理由:配对样本可特异识别转移相关变化;模块化分析比单基因筛选更稳健;多层面验证确保机制可靠性。

担心这类算法、工具和技术上手门槛太高、自己不好把控?完全可以交给筑梦科研专业团队来搞定,扫描下方二维码,我们资深生信老师随时在线,等你来咨询~

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研究结果

01

单细胞图谱揭示肝转移灶中恶性程度增强

scRNA-seq显示,肝转移灶癌细胞相比原发灶具有更高的CNV评分、增殖能力和缺氧适应能力(图1)。

图1 单细胞图谱揭示肝转移灶恶性程度增强

采用了配对样本的单细胞设计,能直接比较原发与转移灶,这一点很聪明。但只有3例CRLM患者,建议再用公共单细胞数据验证一下,避免过拟合。

02

基于模块的转移起始癌细胞亚群发现

模块分析识别出Module 11基因集,富集于转移相关亚群,与不良预后相关(图2e)。亚群3具有显著EMT特征,可能是转移起始亚群(图2h-i)。

图2 基于模块的转移前癌细胞亚群发现

 模块+预后筛选的思路很清晰。不过我觉得可以进一步分析Module 11的转录因子调控网络,这样能更清楚地解释它为什么驱动转移。

03

ENO2驱动转移进展并作为治疗靶点

ENO2是唯一与预后相关的候选基因(图3b),在肝转移中高表达(图3c)。ENO2敲除抑制肿瘤生长和肝转移(图3e-f),ENOblock有效(图3g),且与E-cadherin↓/vimentin↑相关(图3h)。

图3 ENO2驱动转移性进展并可作为治疗靶点

验证链条很完整,从组织到动物再到抑制剂。但如果再分析一下ENO2在泛癌中的免疫浸润相关性,那会更出彩。

04

ENO2通过与MIF直接相互作用协调M2巨噬细胞极化

CellChat显示ENO2+癌细胞经MIF通路与巨噬细胞强交流(图4a-c)。Co-IP、GST pull-down和分子对接证实ENO2与MIF直接结合(图4e-i)。

图4 ENO2通过与 MIF 直接相互作用调控M2型巨噬细胞极化

 干湿结合做得真漂亮,CellChat预测+Co-IP验证无缝衔接。不过MIF的受体在巨噬细胞上的表达模式,或许可以在单细胞数据里再挖一下。

05

ENO2通过抑制泛素介导的降解稳定MIF

ENO2敲低降低MIF蛋白并增强其泛素化,MG132可恢复(图5a-d)。ENO2突变无法稳定MIF(图5e-f)。ENO2调控下游p-STAT3和p-P65(图5g)。

图5 ENO2通过抑制泛素介导的降解作用稳定 MIF

泛素化实验做得很扎实。如果能再做一个CHIP-seq排除转录调控的干扰,结论会更加无懈可击。

06

ENO2诱导M2巨噬细胞极化以驱动肝转移

空间转录组显示ENO2+M2巨噬细胞共定位(图6a)。共培养、PDO和体内模型证实ENO2促进M2极化(CD86↓/CD206↑)。MIF抑制剂或M2抑制剂可逆转转移(图6b-f)。

图6 ENO2诱导M2型巨噬细胞极化以促进肝脏转移

空间转录组+PDO+多重拯救实验,证据链强得没话说。使用了多种干预手段(抑制剂、激动剂、过表达),这让因果关系非常牢固。

07

ENO2招募HSP90拮抗CHIP介导的MIF泛素化降解

ENO2结合HSP90并增强其与MIF的关联(图7a-d)。CHIP敲低可恢复ENO2缺失导致的MIF下降(图7e-g)。MIF的K66位点是CHIP介导泛素化的关键(图7h-i)。

图7 ENO2招募HSP90以拮抗CHIP介导的 MIF 泛素化及降解过程

研究团队把这个机制挖到了E3连接酶和具体的泛素化位点,功力很深。如果后续能做个复合物结构模拟,我觉得发更高分都不是问题!

08

吡硫辛作为ENO2-MIF相互作用抑制剂的鉴定及其体内抗转移效果

虚拟筛选出吡硫辛(pyrithioxin)(图8a-b),Co-IP验证其破坏ENO2-MIF结合(图8c)。分子动力学显示结合稳定(图8d-e)。口服吡硫辛显著减少小鼠肝转移,下调MIF/p-STAT3/p-P65(图8f-h)。

图8 吡硫氧辛作为ENO2- MIF 相互作用抑制剂的鉴定与验证及其体内抗转移作用

虚拟筛选→分子动力学→体内验证,药物发现流程很标准。不过吡硫辛的靶点选择性和初步毒理数据,这是临床转化的关键。

文章小结

这篇研究最让人眼前一亮的是,它用配对单细胞测序把原发灶和肝转移灶的“对话密码”给解了出来,再通过模块筛选精准锁定了ENO2这个兼具代谢和免疫调控的“双面间谍”。

更绝的是,虚拟筛选直接把ENO2‑MIF界面变成了可靶向的“药靶开关”——相当于给抗转移药物设计装了个分子对接GPS。想复现?从自己的单细胞数据里跑一遍CellChat+模块共表达,你也能找到下一个“ENO2”!

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  1. CONNECT:[ UseTime:0.000371s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000527s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.008998s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002377s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000549s ]
  6. SELECT * FROM `set` [ RunTime:0.000250s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000711s ]
  8. SELECT * FROM `article` WHERE `id` = 564717 LIMIT 1 [ RunTime:0.000566s ]
  9. UPDATE `article` SET `lasttime` = 1780489632 WHERE `id` = 564717 [ RunTime:0.007916s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000617s ]
  11. SELECT * FROM `article` WHERE `id` < 564717 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001934s ]
  12. SELECT * FROM `article` WHERE `id` > 564717 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.018619s ]
  13. SELECT * FROM `article` WHERE `id` < 564717 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.026753s ]
  14. SELECT * FROM `article` WHERE `id` < 564717 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.082705s ]
  15. SELECT * FROM `article` WHERE `id` < 564717 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.052573s ]
0.293321s