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IF 11.3 南京大学团队凭借“网络毒理学+多组学”拿下双一区

  • 2026-05-28 03:05:56
IF 11.3 南京大学团队凭借“网络毒理学+多组学”拿下双一区
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引言

邻苯二甲酸酯作为典型环境内分泌干扰物,虽流行病学提示其与子宫内膜异位症风险相关,但介导这一关联的微观机制尚不明确,尤其是铁死亡在其中的作用缺乏系统研究。

2026年,南京大学团队在《Journal of Hazardous Materials》发表研究,整合网络毒理学、多组学与单细胞转录组,首次揭示ARF6是PAEs暴露下调控铁死亡的关键基因,并构建“腔上皮+纤毛上皮→成纤维细胞”的EMT模型;ARF6通过耗竭氧化应激相关通路,驱动上皮-间质转化,最终提出“PAEs—铁死亡—EMT—子宫内膜异位症”致病轴,为EM的环境暴露预防及靶向治疗提供了新视角。

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文章核心架构速览
文献解读

标题:邻苯二甲酸盐暴露促进子宫内膜异位症的机制研究:基于铁磷灭症的视角

发表期刊:《Journal of Hazardous Materials》

发表时间:2026年

影响因子:IF 11.3

01
研究背景

邻苯二甲酸酯作为广泛使用的工业增塑剂,易从塑料产品中浸出并进入环境介质,人类通过吸入、摄入和皮肤接触等多途径暴露。流行病学证据表明PAEs暴露与子宫内膜异位症风险增加存在关联,但具体分子机制尚不明确。铁死亡已被确定为EM的关键病理驱动因素,然而关于PAEs暴露、铁死亡与EM之间相互作用的研究仍不充分。现有研究缺乏从系统层面揭示PAEs如何通过铁死亡调控EM的发生发展。

02
研究思路

1、通过网络毒理学和多组学分析,整合EM相关的bulk RNA-seq、单细胞RNA测序和空间转录组数据,筛选PAEs暴露下EM中异常表达的铁死亡相关基因,并进行功能富集分析。

2、采用12种机器学习方法识别关键FRG——ARF6,通过免疫浸润分析、单细胞转录组注释、伪时间轨迹分析和GSVA等,探究ARF6在EM免疫微环境紊乱及上皮-间充质转化中的作用,构建“Luminal + Ciliated → Fibros”的EMT模型。

3、利用scTenifoldKnk算法对ARF6进行虚拟敲除,分析其对下游铁死亡基因的扰动效应,并通过分子对接模拟PAEs与ARF6的结合能力;最后,采用临床样本的免疫组化和免疫荧光验证ARF6的表达及其与EMT标志物的共定位,提出“PAEs-铁死亡-EMT-子宫内膜异位症”调控轴。

研究结果
01
研究总体流程图

 本图展示了研究的完整技术路线:从PAEs靶点与EM靶点筛选,到bulk RNA-seq差异分析、WGCNA、铁死亡基因交集,再到机器学习筛选关键基因ARF6,随后通过单细胞RNA-seq、空间转录组、虚拟基因敲除及分子对接进行多维度验证,最后结合临床样本免疫组化/免疫荧光确认,系统阐明PAEs暴露促进EM的分子机制。

图1

02
PAEs/EM-铁死亡相关基因的识别与功能富集

 通过PAEs靶点、EM靶点、差异表达基因及WGCNA的turquoise模块,最终筛选出10个PAEs/EM-FRGs。GO富集显示这些基因主要参与氧化应激和EMT相关通路;KEGG富集涉及子宫内膜癌、铁死亡等。基因共表达分析提示它们协同参与EM进展。

图2

03
机器学习筛选关键铁死亡基因ARF6

采用12种机器学习算法的82种组合,确定XGBoost+Lasso+RF为最优模型,最终三个算法共同识别出ARF6为关键FRG。临床样本免疫组化和免疫荧光验证显示,ARF6在EM组织中显著高表达,而在正常内膜中低表达,表明ARF6是PAEs暴露下促进EM的核心枢纽基因。

图3

04
单细胞转录组揭示ARF6在EM中的细胞定位

通过scRNA-seq鉴定出7种主要细胞类型。EM组织中间充质干细胞富集,而上皮细胞减少。ARF6在Epi和MSCs中均有表达。免疫荧光共定位显示:对照组中ARF6与上皮标志物EPCAM共定位,而EM组中ARF6与间质标志物COL1A1共定位,提示ARF6参与EMT过程中的表型转换。

图4

05
上皮亚型注释及ARF6与干细胞特性的正相关性

将上皮细胞分为SOX9、Lumenal、Glandular、Ciliated四个亚型。细胞比例分析显示Lumenal和Ciliated主要存在于对照组。CytoTRACE分析证实Lumenal和Ciliated具有高分化潜能。相关性分析表明,ARF6表达与Lumenal和Ciliated的干细胞性呈显著正相关,提示ARF6可能通过增强上皮亚型的干性来启动EMT过程。

图5

06
间充质干细胞亚型及ARF6在成纤维细胞中的高表达

将MSCs分为EnS、Fibros、SMCs三个亚型。EM组织中Fibros比例显著升高,且ARF6在Fibros中高表达。GSVA分析显示Fibros具有最高的EMT能力。这些结果表明,Fibros是ARF6介导EMT的主要效应细胞,PAEs暴露可能通过ARF6促进Fibros的富集,从而推动EM病变进展。

图6

07
伪时间轨迹证实“Luminal+Ciliated → Fibros”的EMT过程

伪时间分析揭示了从对照组的上皮亚型向EM组的成纤维细胞分化的明确轨迹。随着伪时间推移,Fibros的EMT分化水平逐渐升高,且与ARF6表达呈显著正相关。免疫荧光共定位进一步验证了ARF6与CDH2在EM组织中高度重叠,证明ARF6直接介导了该EMT过程。

图7

08
空间转录组与免疫荧光验证ARF6介导的EMT空间分子机制

 空间转录组去卷积分析定位了EMT细胞区域。ARF6在EMT区域内高表达;上皮标志物CDH1在EMT区域下调,而间质标志物CDH2上调,呈现“钙黏蛋白转换”。细胞通讯分析显示,TGFβ、WNT、NOTCH和IL6等信号通路在Epi与MSCs之间活跃,其中IL6信号特异性地介导Luminal+Ciliated与Fibros的通讯。空间距离分析表明Luminal+Ciliated与Fibros位置最近,为EMT提供了空间基础。

图8

09
ARF6虚拟敲除及与PAEs的分子对接

使用scTenifoldKnk在Fibros中虚拟敲除ARF6,导致多个铁死亡基因表达扰动,富集于氧化应激、蛋白磷酸化调控及细胞黏附等过程,证实ARF6在铁死亡-EMT中起桥梁作用。分子对接显示,PAEs与ARF6蛋白均存在自发性结合,主要通过氢键和范德华力相互作用,直接支持了“PAEs-铁死亡-EMT-EM”轴的分子基础。

图9

文章小结

本文基于网络毒理学与多组学整合分析,系统揭示了邻苯二甲酸酯暴露通过上调铁死亡相关基因ARF6,驱动“Luminal + Ciliated → Fibros”的特异性上皮-间充质转化过程,进而促进子宫内膜异位症发生发展的分子机制。最值得借鉴的是“环境暴露→关键基因筛选→多组学验证→空间机制解析”的研究路径。方法上,bulk RNA-seq、scRNA-seq、空间转录组、机器学习、虚拟基因敲除、分子对接及临床样本免疫组化/免疫荧光等均为经典分析手段。建议采用这种从环境暴露因素到细胞命运调控的系统性思路,用于探索其他内分泌干扰物相关妇科疾病的机制及干预靶点。

想了解这套思路该怎么实现复刻,欢迎后台私信,生信注释团队专业数据分析师期待为大家服务!

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  1. CONNECT:[ UseTime:0.000637s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000799s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000326s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000297s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000514s ]
  6. SELECT * FROM `set` [ RunTime:0.000240s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000571s ]
  8. SELECT * FROM `article` WHERE `id` = 568107 LIMIT 1 [ RunTime:0.000475s ]
  9. UPDATE `article` SET `lasttime` = 1780215245 WHERE `id` = 568107 [ RunTime:0.000795s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000263s ]
  11. SELECT * FROM `article` WHERE `id` < 568107 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000474s ]
  12. SELECT * FROM `article` WHERE `id` > 568107 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000423s ]
  13. SELECT * FROM `article` WHERE `id` < 568107 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005615s ]
  14. SELECT * FROM `article` WHERE `id` < 568107 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001979s ]
  15. SELECT * FROM `article` WHERE `id` < 568107 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002322s ]
0.083264s