基础医学与临床 ›› 2016, Vol. 36 ›› Issue (4): 480-485.

• 研究论文 • 上一篇    下一篇

长链非编码RNA LINC00260抑制幽门螺杆菌感染胃上皮细胞系引起的炎性反应和细胞迁移

李凌雪1,韩涛涛1,刘彦信2,郑德先2,周保国3,史娟2   

  1. 1. 中国医学科学院 基础医学研究所
    2. 中国医学科学院基础医学研究所
    3. 哈尔滨医科大学附属第一医院
  • 收稿日期:2015-12-08 修回日期:2016-01-16 出版日期:2016-04-05 发布日期:2016-03-29
  • 通讯作者: 史娟 E-mail:shijuantt@163.com
  • 基金资助:
    国家自然科学基金;国家自然科学基金

Long non-coding RNA LINC00260 inhibits inflammatory response and cell migration in Helicobacter pylori infected gastric epithelial cell line

  • Received:2015-12-08 Revised:2016-01-16 Online:2016-04-05 Published:2016-03-29

摘要: 目的 探讨长链非编码RNA-LINC00260在幽门螺杆菌(Helicobacter pylori, HP)感染引起的胃癌中的作用及可能机制。方法 实时荧光定量 PCR 检测LINC00260在HP感染的胃黏膜正常上皮细胞(gastric epithelial cell, GES1)中的表达,在胃癌细胞系SGC-7901中通过瞬时转染siRNA敲低LINC00260后与HP共培养,用qPCR检测炎症相关细胞因子肿瘤坏死因子α(TNF-α)、白介素1β(IL-1β)、白介素6(IL-6)及白介素8(IL-8)的表达;在敲低LINC00260的表达后,通过划痕愈合实验,观察对胃癌细胞迁移能力的影响。结果 1)HP感染细胞后,GES1和SGC-7901细胞形态学改变;2) LINC00260在HP感染的胃黏膜正常上皮细胞表达显著下降(P<0.05);3)敲低LINC00260可抑制HP引起的炎症相关因子TNF-α、IL-1β、IL-6和IL-8的表达;4)敲低LINC00260抑制胃癌细胞的迁移能力。结论 LINC00260可能是一个癌基因,在HP感染引起的胃癌中发挥重要作用。

关键词: 长链非编码RNA, 幽门螺杆菌, 炎症细胞因子, 胃癌

Abstract: Objective To study the function and potential mechanism of long non-coding RNA LINC00260 in gastric cancer infected by Helicobacter pylori. Methods Quantitative real-time PCR was used to analyze the differential expression of LINC00260 in normal gastric epithelial cell GES-1 infected with HP. Gastric cancer cell line SGC-7901 was transient transfected with siRNA to down-regulate LINC00260 and co-cultured with HP, and then the inflammatory cytokines such as TNF-α, IL-1β, IL-6 and IL-8 were detected; Gastric cancer cell migration was detected by cell scratch assay after LINC00260 was knocked down. Results 1) The morphology of GES1 and SGC-7901 cells were changed after HP infection; 2) The expression level of LINC00260 was significantly reduced in gastric epithelial cells infected with HP (P<0.05); 3) The expression level of inflammatory cytokines such as TNF-α, IL-1β, IL-6 and IL-8 were down-regulated in cells co-cultured with HP following LINC00260 inhibition. 4) Knocking down the expression of LINC00260 retarded the speed of cell migration. Conclusion LINC00260 might be an oncogene which plays an important role in gastric cancer caused by HP.

Key words: Long non-coding RNA, Helicobacter pylori, inflammatory cytokine, gastric cancer

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