当前位置:首页>南京>Cancer Res | 南京医科大学封益飞等团队锁定肿瘤“内鬼”菌:普雷沃菌既是肠癌预警标志,又是药物靶点,补充其偷走的营养可逆转免疫抑制

Cancer Res | 南京医科大学封益飞等团队锁定肿瘤“内鬼”菌:普雷沃菌既是肠癌预警标志,又是药物靶点,补充其偷走的营养可逆转免疫抑制

  • 2026-04-30 12:39:39
Cancer Res | 南京医科大学封益飞等团队锁定肿瘤“内鬼”菌:普雷沃菌既是肠癌预警标志,又是药物靶点,补充其偷走的营养可逆转免疫抑制

iNature

结直肠癌(CRC)的特征是由肠道菌群塑造的复杂肿瘤微环境(TME)。
2026127, 南京医科大学封益飞、张展及孙跃明共同通讯在Cancer Research 在线发表题为“Intratumoral P. copri Reprograms MARCO+ Tumor-Associated Macrophages by Depleting Glycerophosphocholine to Drive Colorectal Cancer Progression”的研究论文。该研究通过对CRC患者组织进行16S rRNA测序,发现普雷沃菌属,尤其是优势菌种普雷沃菌(Prevotella copri,P. copri),是关键的瘤内细菌。荧光原位杂交(FISH)证实了普雷沃菌的实质浸润,且其丰度与晚期肿瘤分期及术后血清学标志物水平相关。值得注意的是,在配对的正常组织中普雷沃菌丰度降低,提示肿瘤发生过程中可能存在细菌核转位。在多种小鼠模型中,普雷沃菌不仅加速了肿瘤生长,还将肿瘤相关巨噬细胞(TAMs)重编程为促瘤表型。
非靶向代谢组学分析显示,甘油磷酸胆碱(GPC)是普雷沃菌在小鼠模型和细菌培养物中唯一持续消耗的保守代谢物,这一发现在临床标本的空间代谢组学中得到证实。引人注目的是,补充GPC可将MARCOTAMs重编程为抗肿瘤表型,有效抵消普雷沃菌介导的肿瘤进展。总之,本研究揭示了一种CRC发病机制的新范式,即普雷沃菌通过消耗GPC来操纵巨噬细胞极化,从而创造一个免疫抑制微环境。这些发现确立了普雷沃菌作为一种非侵入性诊断标志物和潜在药物靶点的双重价值,而恢复GPC水平则代表了一种有前景的免疫代谢干预策略
结直肠癌(Colorectal Cancer, CRC)是全球范围内发病率和死亡率最高的恶性肿瘤之一。近年来,在生活方式改变和人口老龄化的驱动下,CRC的全球发病率和死亡率均呈持续上升趋势。CRC的发生发展受到肿瘤微环境(Tumor Microenvironment, TME)的影响,这是当前研究的重点领域。TME是一个复杂的生态系统,包含多种组分,如免疫细胞、基质细胞、细胞外基质以及微生物群。深入理解这些组分及其间的交互作用,对于开发针对CRC的靶向及个体化疗法、从而改善患者预后至关重要。
近年来,肿瘤内微生物群作为TME的关键组分日益受到关注。例如,乳腺癌组织中的胞内细菌已被证实与肿瘤转移密切相关。相较于在更广泛的肠道环境中运作的肠道菌群,肿瘤内微生物群具有更直接、更深入地参与肿瘤核心进程的潜力。肿瘤内微生物群的这一独特作用,对于发现诊断生物标志物和潜在治疗靶点具有重要意义。然而,肿瘤内微生物群具有高度多样性,其作用机制复杂,许多方面尚不明确。这种复杂性为深入理解CRC进展和开发有效疗法带来了机遇与挑战。
P. copri促进体内结直肠癌(CRC)进展(图片源自Cancer Research 
本研究旨在通过16S rRNA测序技术,探究CRC不同阶段的肿瘤内微生物群组成。通过比较CRC不同分期的肿瘤样本并分析癌旁正常组织,作者试图阐明与CRC进展相关的特异性微生物谱。作者的研究结果显示,普雷沃氏菌(Prevotella copri, P. copri)在CRC组织中富集,并通过代谢甘油磷酸胆碱(Glycerophosphocholine, GPC)诱导M2巨噬细胞极化,从而促进肿瘤进展。这些结果凸显了肿瘤内普雷沃菌在CRC中的关键作用,并为针对肿瘤微生物组的潜在治疗策略提供了新的见解。
原文链接:
https://doi.org/10.1158/0008-5472.CAN-25-3400

END

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  1. CONNECT:[ UseTime:0.000683s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000844s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000346s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000296s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000589s ]
  6. SELECT * FROM `set` [ RunTime:0.000243s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000569s ]
  8. SELECT * FROM `article` WHERE `id` = 491672 LIMIT 1 [ RunTime:0.003699s ]
  9. UPDATE `article` SET `lasttime` = 1777776053 WHERE `id` = 491672 [ RunTime:0.005011s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000421s ]
  11. SELECT * FROM `article` WHERE `id` < 491672 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000594s ]
  12. SELECT * FROM `article` WHERE `id` > 491672 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000477s ]
  13. SELECT * FROM `article` WHERE `id` < 491672 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000750s ]
  14. SELECT * FROM `article` WHERE `id` < 491672 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005430s ]
  15. SELECT * FROM `article` WHERE `id` < 491672 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.008906s ]
0.099192s