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Nature子刊|南昌大学一附院乳酸化介导 H3K18la 修饰驱动 CXCL1 转录,揭示胰腺癌中性粒细胞浸润与免疫逃逸全新机制

  • 2026-03-24 02:42:40
Nature子刊|南昌大学一附院乳酸化介导 H3K18la 修饰驱动 CXCL1 转录,揭示胰腺癌中性粒细胞浸润与免疫逃逸全新机制

胰腺癌素有“癌王”之称,免疫治疗长期无效,核心困境在于极度免疫抑制的肿瘤微环境。中性粒细胞大量浸润、CD8+杀伤性T细胞匮乏,是胰腺癌进展快、易耐药、预后差的关键原因。

南昌大学第一附属医院张呈生教授团队发表于Nature Communications的重磅研究,运用大数据分析、质谱流式、CUT&Tag、分子对接、动物模型等核心技术,首次揭示一条全新代谢-表观-免疫调控轴:肿瘤糖酵解产生乳酸,经PCAF催化组蛋白H3K18乳酸化(H3K18la),直接转录激活CXCL1,招募大量促癌中性粒细胞,最终诱发免疫逃逸。

该研究不仅破解胰腺癌免疫抑制底层逻辑,更证实PCAF抑制剂联合抗PD-1可强效激活抗肿瘤免疫,为冷肿瘤胰腺癌带来颠覆性联合治疗策略!

标题:Histone lactylation increases CXCL1 expression for neutrophil infiltration and immune escape in pancreatic cancer.

译名:组蛋白乳酸化通过上调 CXCL1 表达促进胰腺癌中性粒细胞浸润与免疫逃逸

期刊:Nature communications

影响因子:IF=15.7

发表时间:2026.2.9

通讯作者: Chengsheng Zhang 

集思从集思专业从事大数据分析、质谱流式、CUT&Tag、分子对接、动物模型,生信分析和课题设计服务,需要的老师长按下面二维码联系。

研究思路

  1. 团队先通过TCGA、CPTAC泛癌数据锁定高糖酵解-高中性粒细胞-差预后的关联;
  2. 再利用糖酵解抑制剂、LDH敲低、中性粒细胞敲除等手段,证实糖酵解通过中性粒细胞介导免疫抑制;
  3. 随后经RNA-seq、CUT&Tag、ChIP-qPCR定位CXCL1为关键趋化因子,明确H3K18la直接激活其转录;
  4. 通过分子对接、体外乳酸化实验、抑制剂筛选鉴定PCAF为H3K18la核心乳酸转移酶;
  5. 最终在皮下与原位胰腺癌模型中,验证PCAF抑制剂+抗PD-1的协同治疗效果,完整搭建乳酸-PCAF-H3K18la-CXCL1-中性粒细胞调控网络。

文章主要内容

1:高糖酵解招募中性粒细胞,加速胰腺癌进展

生物信息学与动物实验证实:

  • 胰腺癌糖酵解活性越高,中性粒细胞浸润越多、CD8+T细胞越少,患者生存期越短

  • 抑制糖酵解(2DG、LDH敲低)可显著减少中性粒细胞、增加CD8+T细胞,抑制肿瘤生长

  • 清除中性粒细胞可逆转糖酵解介导的免疫抑制,恢复CD8+T细胞杀伤功能直接证明糖酵解-中性粒细胞轴是胰腺癌免疫逃逸核心推手。

图 1 糖酵解招募中性粒细胞,促进胰腺癌进展

2:CXCL1是糖酵解招募中性粒细胞的关键趋化因子

RNA-seq筛选与功能实验显示:

  • CXCL1是糖酵解调控最显著的趋化因子,在胰腺癌中高表达且预示不良预后

  • 抑制糖酵解可显著降低CXCL1的mRNA与蛋白水平

  • 回补CXCL1能恢复中性粒细胞浸润,抵消糖酵解抑制的抑癌效果

  • CXCL1通过CXCR1/2介导中性粒细胞趋化,是肿瘤的“中性粒细胞磁铁”。

图 2 糖酵解通过上调 CXCL1 表达增强中性粒细胞浸润

3:乳酸诱导H3K18la,直接转录激活CXCL1

机制核心发现:

  • 糖酵解产物乳酸是组蛋白乳酸化的直接供体,显著提升H3K18la水平

  • H3K18la直接结合CXCL1启动子,强力驱动其转录

  • 2DG、LDH敲低降低H3K18la与CXCL1,补充乳酸可完全恢复

  • 临床样本中H3K18la与CXCL1表达显著正相关首次建立乳酸→H3K18la→CXCL1的表观转录调控通路。

图 3 糖酵解来源的乳酸增强 H3K18la 修饰并促进 CXCL1 表达

4:PCAF是催化H3K18la的关键乳酸转移酶

突破性靶点发现:

  • 筛选证实PCAF抑制剂(Bromosporine)可显著降低H3K18la水平

  • 分子对接显示PCAF可结合乳酰-CoA,体外实验直接证实PCAF催化H3K18乳酸化

  • 敲低或抑制PCAF,同步降低H3K18la、CXCL1与中性粒细胞浸润

  • 临床样本中PCAF与H3K18la表达正相关明确PCAF为胰腺癌H3K18la的核心“书写酶”,成为全新可药用靶点。

图 4 PCAF 作为胰腺癌中 H3K18 的组蛋白乳酸转移酶

5:PCAF抑制剂联合抗PD-1,协同攻克胰腺癌

最具转化价值的结果:

  • 单独抗PD-1对胰腺癌几乎无效

  • PCAF抑制剂+抗PD-1联合治疗:

1.显著缩小肿瘤体积,延长小鼠生存期

2.减少肿瘤中性粒细胞浸润,增加CD8+T细胞与GZMB+杀伤性T细胞

3.降低PD-1+耗竭T细胞比例,逆转免疫抑制

4.下调H3K18la与CXCL1水平,阻断免疫逃逸通路成功将胰腺癌“冷肿瘤”转化为“热肿瘤”,实现免疫治疗增效。

图 5 PCAF 抑制剂与抗 PD-1 单抗联合治疗胰腺癌

文章总结

本研究首次在胰腺癌中完整阐明乳酸-PCAF-H3K18la-CXCL1全新代谢-表观-免疫轴:肿瘤通过高糖酵解产生乳酸,PCAF催化H3K18la转录激活CXCL1,招募中性粒细胞构建免疫抑制微环境,最终介导免疫逃逸。该成果三大核心价值:

  1. 揭示胰腺癌免疫逃逸全新表观机制,填补代谢与免疫交叉领域空白
  2. 鉴定PCAF、H3K18la、CXCL1为胰腺癌预后标志物与治疗靶点
  3. 开创PCAF抑制剂+免疫检查点抑制剂联合方案,为胰腺癌免疫治疗提供全新方向

集思从集思专业从事大数据分析、质谱流式、CUT&Tag、分子对接、动物模型,生信分析和课题设计服务,需要的老师长按下面二维码联系。

往期推荐 ·

锁定心衰元凶:复旦大学葛均波院士/孙爱军教授揭示组胺代谢酶HNMT调控组蛋白甲基化,诱发病理性心肌肥厚

IF15.4顶刊!巴豆酰化修饰组学揭秘癫痫发病新机制:重庆医科大学肖飞团队发现STXBP1巴豆酰化修饰失衡致抑制性突触传递受损加重癫痫易感性

IF=33.9重庆医科大学:KDM5B驱动代谢-表观级联通路,通过乳酸化修饰 hnRNPA1调控AR-V7剪接,破解前列腺癌恩杂鲁胺耐药难题

《PNAS》(IF=14.1)重磅发布!田恒力团队合作揭示m⁶A修饰通过SOCS3调控小胶质细胞“刹车”神经炎症,为创伤性脑损伤治疗提供新靶点

注:本文原创表明为原创编译,非声张版权,侵删!

关于集思慧远

集思慧远(GENEPIONEER)致力于将生命科学和化学相结合,助力客户达成科研创新的目标。更多信息请浏览:genepioneer.cn
南京集思慧远生物科技有限公司于2015年4月成立,是一家专业从事科研实验服务的公司。公司总部坐落在具有丰厚历史底蕴的南京,坐标在南京大学旁的江苏生命科技创新园,办公面积2000m²,员工人数100+。集思医学主营业务有:

1.基因/转录/蛋白/代谢/微生物等常规高通量组学及单细胞和空间转录组等时空组学;

2.表观组学WGBS/Ribo-seq/CUT&Tag/ATAC-seq/Hi-c/m6A/m5C/ac4C各类修饰)的表观遗传研究,助力新靶点发现、药物作用机制研究及疾病表观调控机制探索

3.蛋白修饰:磷酸化、乙酰化、泛素化、乳酸化、组蛋白甲基化等修饰

4.专业的医学方案整体设计利用生物信息学对公共数据进行深入挖掘分析,并提供干湿结合实验

5.新靶点发现及验证服务,通过ABPP/TPP/DARTS等技术加速小分子药物靶点发现

6.难成药靶点降解剂开发技术PROTAC

7.基于AI的药物筛选/设计/优化/抑制剂开发等;

8.无需抗体的临近标记PLA技术提供蛋白互作研究。

9.纳米材料递送药物系统开发,定制化纳米载体设计与制备,解决药物靶向递送至病灶组织/细胞等药物递送难题。

集思的荣誉及成果:2017获国家高新技术企业,2020众创板挂牌,2021获江苏省民营科技企业称号。2024荣膺江苏省“专精特新”中小企业、栖霞高新区TOP20明星企业称号。创始人先后获“创业南京”人才计划二等奖,“中国江苏创新创业大赛”优胜奖,“南京市创新型企业家”称号等。集思的愿景:打造生命科学行业的航空母舰,为人类生命健康保驾护航,为人类生产生活谋福祉。

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  1. CONNECT:[ UseTime:0.001018s ] mysql:host=127.0.0.1;port=3306;dbname=aa460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001858s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.004069s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000669s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001491s ]
  6. SELECT * FROM `set` [ RunTime:0.013802s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001715s ]
  8. SELECT * FROM `article` WHERE `id` = 483926 LIMIT 1 [ RunTime:0.001633s ]
  9. UPDATE `article` SET `lasttime` = 1775480723 WHERE `id` = 483926 [ RunTime:0.156308s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000720s ]
  11. SELECT * FROM `article` WHERE `id` < 483926 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002811s ]
  12. SELECT * FROM `article` WHERE `id` > 483926 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.003059s ]
  13. SELECT * FROM `article` WHERE `id` < 483926 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006845s ]
  14. SELECT * FROM `article` WHERE `id` < 483926 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017560s ]
  15. SELECT * FROM `article` WHERE `id` < 483926 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.008088s ]
0.298141s