当前位置:首页>南京>IF14.1!南京中医药大学程海波团队“老药新用”登顶《AS》!靠“靶点-免疫”双效机制,把中药单体做成了抗瘤明星分子!

IF14.1!南京中医药大学程海波团队“老药新用”登顶《AS》!靠“靶点-免疫”双效机制,把中药单体做成了抗瘤明星分子!

  • 2026-07-17 05:33:23
IF14.1!南京中医药大学程海波团队“老药新用”登顶《AS》!靠“靶点-免疫”双效机制,把中药单体做成了抗瘤明星分子!

引言:

🔍在结直肠癌(CRC)“免疫荒漠”里,M2型肿瘤相关巨噬细胞(TAMs)就像一群“叛徒”——它们不仅不杀敌,反而分泌IL-10、TGF-β帮肿瘤逃避免疫攻击。如何把这些“叛徒”掰回成M1型的“战士”,一直是免疫治疗的难点。

✅ 2025年3月,南京中医药大学程海波团队《Advanced Science》(IF=14.1)发表研究,发现中药山梗菜中的活性单体洛贝林(lobeline) 能精准“卡住”癌细胞内的MAPK14蛋白,阻止其进入细胞核,从而解除p53对Slurp1基因的转录压制。Slurp1蛋白一分泌出去,就把TAM们从M2“掰”成M1,同时激活CD8⁺ T细胞,让冷肿瘤变热。最漂亮的是,洛贝林和抗PD-1联用,效果直接翻倍

文献解读

中文标题:通过叶状腺素靶向MAPK14,上调Slurp1介导的TAM替代激活抑制,并减缓结直肠癌生长

发表期刊:Advanced Science

发表时间:2025年3月

影响因子:14.1/Q1

研究背景

结直肠癌(CRC)的“免疫荒漠”里,M2型肿瘤相关巨噬细胞(TAMs)就像一群披着羊皮的“叛徒”——它们不仅不攻击肿瘤,反而分泌IL-10、TGF-β等抑制性因子,把CD8⁺ T细胞按在地上摩擦。

研究方法

体内药效:

  • MC38/CT26荷瘤小鼠模型证实,洛贝林抑瘤效果媲美5-Fu,初步锁定成药潜力。

靶点机制:

  • 利用TRAP技术捕获直接结合蛋白SLURP1,经质谱与MST验证亲和力;CRISPR敲除及双荧光素酶实验,确立SLURP1-p53-MAPK14为核心通路。

免疫重塑:

  • 单细胞测序结合流式验证,洛贝林驱动巨噬细胞由M2向M1极化,IHC显示增殖抗原PCNA下调、效应分子Granzyme B上调,证实其通过激活免疫微环境发挥疗效。

研究结果

1

洛贝林剂量依赖地抑制MC38移植瘤和CRC类器官

洛贝林(12.5、25、50 mg/kg)显著抑制MC38荷瘤小鼠的肿瘤体积和重量,效果与5-Fu相当,且PCNA蛋白表达随剂量升高而下降。在人源CRC类器官中同样看到生长被抑制。

图1.洛贝林可减少MC38异种移植C57BL/6小鼠和结直肠癌类器官的肿瘤负荷

复现建议:

如果你想筛自己的小分子,可以先用类器官做高通量——KingBiotech的商用类器官培养基和Matrigel体系很成熟,复现成本不高。

2

单细胞测序揭示洛贝林重塑肿瘤微环境

对PBS和洛贝林组肿瘤做scRNA-seq,注释出3大类细胞:癌细胞、成纤维细胞、免疫细胞。洛贝林治疗后,癌细胞比例从53.67%降至50.74%,免疫细胞比例从9.65%升至10.48%。在免疫细胞中,M1巨噬细胞、CD14⁺单核细胞、DC、CD8⁺ T细胞增加,而M2巨噬细胞减少。通路富集显示T细胞功能活化、胶原相关通路改变

图2.ScRNA-seq分析显示,罗布麻碱能够延缓小鼠移植结直肠癌的生长

复现建议:

  1. scRNA-seq数据分析门槛高,建议先用公开数据做in silico验证,再决定是否送测。本文数据已上传GSE247841,可以直接拿来二次挖掘。

  2. 如果经费有限,可以用流式替代单细胞测序来验证关键免疫亚群的变化——省钱又快速。

3

洛贝林促进Slurp1的转录和翻译

从scRNA-seq差异基因中,Slurp1是上调最显著的基因之一。洛贝林组的肿瘤组织中Slurp1 mRNA和蛋白水平均显著升高。亚组分析显示Slurp1主要在癌细胞中表达,且每个癌细胞亚群在洛贝林治疗后Slurp1都升高。

图3.SLURP1的转录和翻译受到罗贝林的促进

复现建议:

  1. 如果你发现某个小分子上调了一个分泌蛋白,建议做ELISA检测上清中的蛋白浓度,并用中和抗体或CRISPR敲除来证明该蛋白确实是功能执行者。

  2. qPCR和WB的引物/抗体要跨物种验证——本文用的是小鼠模型,人源SLURP1有同源性,但检测时抗体不一定通用。

4

Slurp1敲除完全逆转洛贝林的抗肿瘤效果

用CRISPR构建Slurp1敲除的MC38细胞(Slurp1⁻/⁻),皮下接种后洛贝林治疗。结果:Slurp1⁻/⁻组的肿瘤体积和重量与PBS组无差异,洛贝林完全失效。IHC证实敲除组SLURP1蛋白几乎消失,PCNA高表达。

图4.Slurp1缺失逆转了洛贝林对肿瘤负荷的改善作用

复现建议:

体内实验每组6只小鼠,样本量够,但没提随机分组和盲法。你自己做的时候一定要随机分组,否则审稿人会质疑。

5

癌细胞来源的SLURP1介导洛贝林对巨噬细胞极化的调控

洛贝林强势重编程TAMs:单细胞测序显示其显著上调CD86、IL-12等M1标签,打压CD206、Arg1等M2标签,拟时序分析证实驱动M1极化。

虽然流式验证了表型,但我建议补个iNOS双染,毕竟CD206偶尔也会在M1上“诈尸”;要是能再加个癌细胞上清共培养,把这股“极化力”直接可视化,故事就更硬了。

图5.结肠癌细胞衍生的SLURP1参与了洛贝林调节巨噬细胞极化的过程

复现建议:

巨噬细胞极化实验,建议先用BMDM体外验证:用LPS+IFN-γ诱导M1,IL-4诱导M2,然后加洛贝林或Slurp1重组蛋白,看极化标志物变化——更干净。

6

MAPK14是洛贝林的直接靶蛋白

利用TRAP技术从MC38细胞中钓出16个潜在结合蛋白,其中MAPK14的肽段富集最显著。ITC验证结合亲和力Kd=16.6 nmol/L,非常强。分子对接预测A34、R57、R67、R173是关键残基,点突变后亲和力下降近百倍。同时排除了已知靶点CHRNA2/CHRNA4和VMAT2在MC38中的作用。

图6.MAPK14是宿黄素的靶蛋白

复现建议:

  1. TRAP技术需要质谱平台和数据分析能力,普通实验室可改用DARTS或CETSA来初步确认靶点。

  2. 如果你有目标蛋白但不知道配体,可以反向用分子对接虚拟筛选——本文用了PDB库的MAPK14晶体结构,这个思路值得借鉴。

7

MAPK14通过p53抑制Slurp1转录

siRNA敲低MAPK14后,Slurp1 mRNA和蛋白水平升高,而洛贝林处理组中敲低MAPK14不再进一步升高,说明洛贝林和MAPK14作用于同一通路。洛贝林处理后,MAPK14核内水平下降、胞质水平上升——提示它被“困”在胞质。双荧光素酶报告基因实验证明p53结合在Slurp1启动子的-1.5到-0.5 kb区域,其中第8个结合位点转录抑制最强。敲低p53可逆转MAPK14对Slurp1的抑制

图7.丝裂原活化蛋白激酶 14 通过 p53 抑制 SLURP1 的转录与翻译

复现建议:

做双荧光素酶报告基因,内参均一性是命门,强烈安利Promega的双荧光素酶试剂盒,操作省心还稳。但这只是敲门砖,真要把p53结合位点做实,必须得上ChIP-qPCR——拿p53抗体把蛋白-DNA复合物拉下来,再用覆盖预测位点的引物去扩增,这才是锁定转录调控的“金标准”组合拳。

8

洛贝林联合抗PD-1协同增效

MC38荷瘤小鼠分成5组:PBS、5-Fu、洛贝林单药、抗PD-1单药、洛贝林+抗PD-1。联合组肿瘤最小、重量最轻,显著优于单药。IHC显示联合组SLURP1最高、PCNA最低;Foxp3(Treg标志)下降,Granzyme B(CD8⁺ T细胞杀伤功能)上升。流式显示联合组M1最多、M2最少

图8.山梗菜碱与 PD1 抗体联用展现出更强的抗肿瘤效果

复现建议:

  1. 如果你想做联合用药,建议先做体外协同实验,再在体内验证。

  2. 流式检测T细胞时,除了Granzyme B,建议加IFN-γ和Ki-67,更全面反映功能。

 三

文章小结

本研究首次揭示洛贝林直接靶向MAPK14阻断其核转位,解除p53对SLURP1的转录抑制,确立完整机制。SLURP1兼具“自抑增殖”“免疫重编程”双重功能:驱动TAMs向M1极化并激活CD8⁺ T细胞,贯通固有与适应性免疫。洛贝林联合抗PD-1显著增效,为“冷肿瘤”“热”提供了极具转化潜力的口服候选策略。

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  1. CONNECT:[ UseTime:0.001065s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001580s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.016254s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.009495s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001583s ]
  6. SELECT * FROM `set` [ RunTime:0.008803s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001583s ]
  8. SELECT * FROM `article` WHERE `id` = 574600 LIMIT 1 [ RunTime:0.004120s ]
  9. UPDATE `article` SET `lasttime` = 1784287769 WHERE `id` = 574600 [ RunTime:0.021533s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.004560s ]
  11. SELECT * FROM `article` WHERE `id` < 574600 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001234s ]
  12. SELECT * FROM `article` WHERE `id` > 574600 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.010693s ]
  13. SELECT * FROM `article` WHERE `id` < 574600 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011064s ]
  14. SELECT * FROM `article` WHERE `id` < 574600 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.125581s ]
  15. SELECT * FROM `article` WHERE `id` < 574600 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.035283s ]
0.429162s