CagA promotes proliferation and inhibits apoptosis of GES-1 cells by upregulating TRAF1/4-1BB.

CagA promotes proliferation and inhibits apoptosis of GES-1 cells by upregulating TRAF1/4-1BB.
复制标题

CagA通过上调TRAF1/4-1BB促进GES-1细胞增殖并抑制凋亡

DOI:
10.3892/mmr.2017.6757
复制
发表时间:
2017-08
影响因子:
3.4
通讯作者:
Yuan Y
Yuan Y
中科院分区:
医学4区
文献类型:
--
作者:
Wang F;Qu N;Peng J;Yue C;Yuan L;Yuan Y

文献摘要

参考文献

被引文献

相似文献

细胞毒素相关基因 A (CagA) 是幽门螺杆菌最重要的毒力因子之一,在幽门螺杆菌介导的胃癌肿瘤发生中发挥作用。然而,潜在的分子机制仍有待阐明。本研究旨在探讨CagA对GES-1细胞增殖和凋亡的影响及其机制。构建CagA真核表达质粒并转染GES-1细胞。分别使用逆转录定量聚合酶链反应和蛋白质印迹分析测定 CagA、肿瘤坏死因子受体相关因子 1 (TRAF1) 和肿瘤坏死因子受体超家族成员 9 (4-1BB) 的 mRNA 和蛋白水平。 Western blot和ELISA分析用于检测白细胞介素(IL)-8的释放。 MTT 测定和流式细胞术分析分别用于评估细胞活力和细胞凋亡。 CagA 的异位表达显着增加了 GES-1 细胞中 TRAF1 和 4-1BB mRNA 和蛋白水平。 CagA 增加 GES-1 细胞中 IL-8 的表达和释放。 CagA表达显着促进GES-1细胞增殖(P<0.05),抑制细胞凋亡(P<0.05)。总之,CagA上调TRAF1/4-1BB,从而促进GES-1细胞的增殖并抑制其凋亡。
Cytotoxin-associated gene A (CagA) is one of the most important virulence factors of Helicobacter pylori, and serves a role in H. pylori-mediated tumorigenesis in gastric cancer. However, the underlying molecular mechanism remains to be elucidated. The present study aimed to investigate the effects of CagA on the proliferation and apoptosis of GES-1 cells, and the underlying mechanism. A CagA eukaryotic expression plasmid was constructed and transfected into GES-1 cells. The mRNA and protein levels of CagA, tumor necrosis factor receptor-associated factor 1 (TRAF1) and tumor necrosis factor receptor superfamily member 9 (4–1BB) were determined using the reverse transcription-quantitative polymerase chain reaction and western blot analysis, respectively. Western blot and ELISA analysis was used to detect the release of interleukin (IL)-8. An MTT assay and flow cytometric analysis was used to assess cell viability and apoptosis, respectively. Ectopic expression of CagA markedly increased TRAF1 and 4-1BB mRNA and protein levels in GES-1 cells. CagA increased the expression and release of IL-8 in GES-1 cells. The expression of CagA significantly promoted the proliferation (P<0.05) and inhibited the apoptosis (P<0.05) of GES-1 cells. In conclusion, CagA upregulated TRAF1/4-1BB, thereby promoting the proliferation and inhibiting the apoptosis of GES-1 cells.
DOI: 10.1038/srep25526
发表时间: 2016-05-06
期刊: Scientific reports
影响因子: 4.6
作者:
Kim CM;Choi JY;Bhat EA;Jeong JH;Son YJ;Kim S;Park HH
通讯作者: Park HH
DOI: 10.18632/oncotarget.7125
发表时间: 2016-03-01
期刊: Oncotarget
影响因子: --
作者:
Zhang BG;Hu L;Zang MD;Wang HX;Zhao W;Li JF;Su LP;Shao Z;Zhao X;Zhu ZG;Yan M;Liu B
通讯作者: Liu B
DOI: 10.1038/embor.2009.210
发表时间: 2009-11-01
期刊: EMBO REPORTS
影响因子: 7.7
作者:
Lamb, Acacia;Yang, Xiao-Dong;Chen, Lin-Feng
通讯作者: Chen, Lin-Feng
DOI: 10.1002/jcb.24389
发表时间: 2013-03
影响因子: 4
作者:
Lamb, Acacia;Chen, Lin-Feng
通讯作者: Chen, Lin-Feng
DOI: 10.1073/pnas.93.13.6721
发表时间: 1996-06-25
影响因子: 11.1
作者:
Song, HY;Rothe, M;Goeddel, DV
通讯作者: Goeddel, DV