实用医学杂志 ›› 2022, Vol. 38 ›› Issue (22): 2787-2794.doi: 10.3969/j.issn.1006⁃5725.2022.22.005

• 基础研究 • 上一篇    下一篇

具核梭杆菌诱导自噬调控蛋白LC3高表达在食管鳞癌中的临床意义 

何珂瑶1 刘怡文2 张哲源2 张家豪1 代宁涛3 杨海军3 孔金玉2 周福有1,4    

  1. 1 新乡医学院第三附属医院胸外科(河南新乡 453003);2 河南科技大学临床医学院,河南科技大学第一附 属医院,河南科技大学肿瘤研究所,河南省肿瘤表观遗传重点实验室(河南洛阳 471003);3 安阳市肿瘤医 院病理科(河南安阳 455000);4 安阳市肿瘤医院胸外科,河南省食管癌精准防治医学重点实验室(河南安 455000)

  • 出版日期:2022-11-25 发布日期:2022-11-25
  • 通讯作者: 周福有 E⁃mail:zhoufuyouhn@163.com
  • 基金资助:
    河南省科技攻关项目(编号:202102310129,212102310670);河南省医学科技攻关省部共建项目(编号:LH⁃GJ20200806,LHGJ20200811,SBGJ202103099,SBGJ202103100);安阳市科技计划项目(编号:ZDKJJH2020006)

The clinical significance of high expression of autophagy regulatory protein LC3 induced by Fn in ESCC

HE Keyao*,LIU Yiwen,ZHANG Zheyuan,ZHANG Jiahao,DAI Ningtao,YANG Haijun,KONG Jinyu,ZHOU Fuyou.   

  1. Department of Thoracic Surgery,the Third Affiliated Hospital of Xinxiang Medical University,Xinxiang 453003,China

  • Online:2022-11-25 Published:2022-11-25
  • Contact: ZHOU Fuyou E⁃mail:zhoufuyouhn@163.com

摘要:

目的 分析具核梭杆菌(Fn)对食管鳞癌(ESCC)细胞中自噬调控蛋白 LC3 的诱导效应,并探讨其临床意义。方法 建立 LC3 敲降的 KYSE150 细胞系。采用 Western blot、平板克隆、划痕实验及 Tran⁃ swell 检测 Fn LC3 KYSE150 细胞恶性生物学行为的影响。通过 RNAscope 及免疫组化检测 ESCC 组织 Fn感染及LC3表达情况。采用Kaplan⁃Meier法分析二者对患者生存期的影响。结果 KYSE150细胞感染 Fn 时,LC3 表达量增加,恶性生物学行为增强;LC3 敲降时恶性生物学行为减弱(均 P < 0.05)。ESCC 组织 Fn 感染与 LC3 高表达具有一致性(P < 0.05)。Fn 感染及 LC3 表达阳性组患者生存期缩短(P < 0.05)。 结论 Fn可通过诱导ESCC细胞中LC3高表达,富集自噬小体,为自身定植提供条件,促进ESCC恶性进展。

关键词:

食管鳞癌, 具核梭杆菌, 自噬小体, LC3, 预后

Abstract:

Objective To analyze the induction effect of Fusobacterium nucleatum(Fn)on autophagy regulatory protein LC3 in esophageal squamous cell carcinoma(ESCC)cells and explore its clinical significance. Methods The KYSE150 cell line with LC3 knockdown was established. Western blot,plate cloning,scratch test and Transwell were used to detect the effects of Fn and LC3 on the malignant biological behavior of KYSE150 cells. Fn infection and LC3 expression in ESCC tissues were detected by RNAscope and immunohistochemistry. Kaplan⁃ Meier method was used to analyze the effects of Fn infection and LC3 expression on the survival phasein patients. Results As KYSE150 cells were infected with Fn,the expression of LC3 increased and the malignant biological behavior enhanced;following LC3 was knocked down,the malignant biological behavior reduced(P < 0.05). Infection of Fn in ESCC tissues was consistent with high expression of LC3(P < 0.05). The survival phase was shortened in the patients with both Fn infection and positive expression of LC3(P < 0.05). Conclusions Fn can accelerate malignant progression of ESCC by inducing high LC3 expression in ESCC cells,enriching autophago⁃ somes,and providing conditions for self⁃colonization.

Key words:

esophageal squamous cell carcinoma, Fusobacterium nucleatum, autophagosome, LC3, prognosis