您的位置:山东大学 -> 科技期刊社 -> 《山东大学学报(医学版)》

山东大学学报(医学版) ›› 2016, Vol. 54 ›› Issue (3): 9-13.doi: 10.6040/j.issn.1671-7554.0.2015.750

• • 上一篇    下一篇

幽门螺杆菌对NLRP3炎症小体的活化作用

刘正美,姜琼,周建奖,官志忠,赵艳,熊林,谢渊   

  1. 贵州医科大学分子生物学重点实验室, 贵州 贵阳 550004
  • 收稿日期:2015-08-10 出版日期:2016-03-10 发布日期:2016-03-10
  • 通讯作者: 谢渊. E-mail:xieyuan1974@163.com E-mail:xieyuan1974@163.com
  • 基金资助:
    国家自然科学基金(81260303);贵州省“2011协同创新中心”(黔教合协同创新中心[2014]06)

Effect of Helicobacter pylori infection on NLRP3 inflammasome activation

LIU Zhengmei, JIANG qiong, ZHOU Jianjiang, GUAN Zhizhong, ZHAO Yan, XIONG Lin, XIE Yuan   

  1. Key Laboratory of Molecular Biology, Guizhou Medical University, Guiyang 550004, Guizhou, China
  • Received:2015-08-10 Online:2016-03-10 Published:2016-03-10

摘要: 目的 研究幽门螺杆菌(Helicobacter pylori, H.pylori)感染对NLRP3炎症小体相关蛋白的活化作用,探讨NLRP3炎症小体在H.pylori感染中的作用。 方法 培养H.pylori国际标准株NCTC11639,感染胃黏膜上皮细胞株GES-1和胃癌细胞株MKN-45,细菌数∶细胞数(感染复数)为100∶1和200∶1,于6 h和12 h收集细胞,提取总蛋白。Western blotting检测炎症小体中NLRP3及Caspase-1蛋白的表达水平,ELISA法检测细胞中IL-1β的含量。 结果 H.pylori感染GES-1细胞后, NLRP3、Caspase-1以及IL-1β的表达随着感染复数的增加而增加,差异均具有统计学意义(P<0.05);感染MKN-45细胞后,NLRP3的蛋白表达随着感染复数的增加而增加,而Caspase-1及IL-1β的表达随着感染复数的增加而降低,差异均有统计学意义(P<0.05);相同感染复数的H.pylori感染GES-1细胞和MKN-45细胞,6 h和12 h之间NLRP3、Caspase-1以及IL-1β的表达差异均无统计学意义(P>0.05)。 结论 H.pylori感染在体外能活化GES-1细胞中NLRP3炎症小体相关蛋白NLRP3和Caspase-1,活化MKN-45细胞中NLRP3蛋白的表达,抑制Caspase-1蛋白的表达;促进上皮细胞GES-1中IL-1β炎症因子的表达, 抑制肿瘤细胞MKN-45中IL-1β炎症因子的表达。

关键词: 幽门螺杆菌, IL-1β, NLRP3, Caspase-1

Abstract: Objective To study the impact of Helicobacter pylori(H.pylori) infection on NLRP3 inflammasome associated proteins expression and activation in gastric epithelial cells and gastric cancer cells, and further discuss the role of NLRP3 inflammasome when gastric cells were infected by H.pylori. Methods The gastric epithelial cell line GES-1 and gastric cancer cell line MKN-45 were infected by H.pylori NCTC11639 at a multiplicity of infection(MOI)of 100 or 200. At 6 h or 12 h after infection, the cells were harvested and the total proteins were extracted. Then the expressions of NLRP3 and Caspase-1 were analyzed by Western blotting and the level of IL-1β secretion was detected by ELISA. Results The expressions of NLRP3 and Caspase-1 and the secretion of IL-1β were increased with the increase of NCTC11639 MOI in GES-1 cells(P<0.05). Although the expression of NLRP3 was increased, the expression of Caspase-1 and the secretion of IL-1β were decreased with the increase of NCTC11639 MOI in MKN-45 cells(P<0.05). In addition, the expressions of NLRP3 and Caspase-1 and the secretion of IL-1β were not significantly different in GES-1 or MKN-45 infected by H.pylori for 6 h and 12 h with the same MOI(P>0.05). Conclusion H.pylori infection promotes the expressions and activations of NLRP3, Caspase-1 and IL-1β in gastric epithelial cells. However, H.pylori infection facilitates the expression of NLRP3 but inhibits the expressions and activations of Caspase-1 and IL-1β in gastric cancer cells.

Key words: Helicobacter pylori, Caspase-1, NLRP3, IL-1β

中图分类号: 

  • R735.2
[1] Forman D, Newell DG, Fullerton F, et al. Association between infection with Helicobacter pylori and risk of gastric cancer: evidence from a prospective investigation[J]. BMJ, 1991, 302(6788):1302-1305.
[2] Kawai T, Akira S. Toll-like receptor and RIG-1-like receptor signaling[J]. Annals of the New York Academy of Sciences, 2008, 1143(1):1-20.
[3] Schroder K, Tschopp J. The inflammasomes[J]. Cell, 2010, 140(6):821-832.
[4] Plummer M, van Doorn LJ, Franceschi S, et al. Helicobacter pylori cytotoxin-associated genotype and gastric precancerous lesions[J]. J Natl Cancer Inst, 2007, 99(17):1328-1334.
[5] Jacobs SR, Damania B. NLRs, inflammasomes, and viral infection[J]. J Leukoc Biol, 2012, 92(3):469-477.
[6] Costa A, Gupta R, Signorino G, et al. Activation of the NLRP3 inflammasome by group B streptococci[J]. J Immunol, 2012, 188(4):1953-1960.
[7] Serelli-Lee V, Ling KL, Ho C, et al. Persistent Helicobacter pylori specific Th17 responses in patients with past H.pylori infection are associated with elevated gastric mucosal IL-1beta[J]. PLoS One, 2012, 7(6): e39199. doi:10.1371/journal.pone.0039199.
[8] Romero-Adrian TB, Leal-Montiel J, Monsalve-Castillo F, et al. Helicobacter pylori: bacterial factors and the role of cytokines in the immune response[J]. Curr Microbiol, 2010, 60(2):143-155.
[9] Hong SN, Jo S, Jang JH, et al. Clinical characteristics and the expression profiles of inflammatory cytokines /cytokine regulatory factors in asymptomatic patients with nodular gastritis[J]. Dig Dis Sci, 2012, 57(6):1486-1495.
[10] Brown DI, Griendling KK. Nox proteins in signal transduction[J]. Free Radic Biol Med, 2009, 47(9):1239-1253.
[11] Hitzler I, Sayi A, Kohler E, et al. Caspase-1 has both proinflammatory and regulatory properties in Helicobacter infections, which are differentially mediated by its substrates IL-1beta and IL-18[J]. J Immunol, 2012, 188(8):3594-3602.
[12] 邝玉,杨远,李婉宜,等. 幽门螺杆菌体外培养影响因素探讨[J].中国病原生物学杂志,2013,8(7):595-597. KUANG Yu, YANG Yuan, LI Wanyi, et al. Study of factors affecting the in vitro culture of Helicobacter pylori[J]. Journal of Pathogen Biology, 2013, 8(7):595-597.
[1] 于珍珍,陈慧,杨晓云,吕明. 高尿酸血症、幽门螺杆菌感染与代谢综合征的相关性[J]. 山东大学学报(医学版), 2017, 55(5): 76-80.
[2] 张钰,韩琛,王朝霞,王兆朋,张月英,周淑萍,马冉冉,王恒孝. 柽柳对小鼠酒精性肝损伤的保护作用及机制[J]. 山东大学学报(医学版), 2017, 55(2): 61-67.
[3] 徐翠, 王涛, 周平. 儿童幽门螺杆菌免疫组化染色检测分析[J]. 山东大学学报(医学版), 2014, 52(9): 81-84.
[4] 李月月, 左秀丽, 季锐, 陈飞雪, 赵宏宇, 王晗, 郭婧, 张菁媛, 付姗姗, 刘建伟, 李延青. 10天伴同、序贯及含铋剂四联方案根除幽门螺杆菌效果的随机对照研究[J]. 山东大学学报(医学版), 2014, 52(7): 45-49.
[5] 杨雪, 邱春华, 雷蕾, 胡晓. 胃息肉的特点及其与幽门螺杆菌感染的关系[J]. 山东大学学报(医学版), 2014, 52(11): 41-44.
[6] 刘伟,于晗,李玉瑭,刘旭静,李雯,单玉群,孙允东,周亚滨. 二烯丙基三硫醚对幽门螺杆菌生物膜的杀菌作用[J]. 山东大学学报(医学版), 2013, 51(10): 49-53.
[7] 张琪1,2,李延青1,张翠萍2,赵坤2,孙向红3. 活化诱导胞嘧啶核苷脱氨酶在肠型胃癌组织中的表达及与幽门螺杆菌感染的关系[J]. 山东大学学报(医学版), 2012, 50(12): 61-.
[8] 董传芳1,刘雪平1,王美霞1,徐松1,殷青青1,孙志坚1,游丽2. 糖基化终末产物对SH-SY5Y细胞氧化应激及凋亡的影响[J]. 山东大学学报(医学版), 2012, 50(1): 9-.
[9] . 青年胃癌与老年胃癌临床、内镜、病理特点分析[J]. 山东大学学报(医学版), 2009, 47(10): 83-85.
[10] 高萍,高卫,王薇,黄秀红,孙玉萍. IL-1受体拮抗剂基因多态性与胃癌易感性的相关性研究[J]. 山东大学学报(医学版), 2006, 44(10): 1069-1071.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!