期刊文献+

幽门螺杆菌VacA重组蛋白对SGC7901胃癌细胞的作用 被引量:4

Effect of recombinant VacA protein of Helicobacter pylori on gastric cancer cell line SGC7901
下载PDF
导出
摘要 目的:研究幽门螺杆菌空泡毒素(VacA)编码基因在大肠杆菌中的表达产物对SGC7901胃癌细胞的作用.方法:常规培养pET32a-vacA-E.coliBL21(DE3)工程菌株,IPTG诱导重组蛋白表达,产物纯化后作用于胃癌细胞,倒置显微镜及电镜等检测细胞生长情况.结果:重组蛋白作用于胃癌细胞后,倒置显微镜下观察,细胞生长受抑制,其细胞空泡毒作用减弱甚至消失,电镜下可见10%-20%左右细胞呈现轻度空泡变,仅少数细胞空泡变明显,细胞表面微绒毛消失,少量细胞体积减小,并出现了早期核着边固缩等凋亡改变.结论:重组VacA蛋白对胃癌细胞的生长具有抑制作用,空泡毒作用减弱. AIM: To explore the effect of the recombinant protein expressed by Helicobacter pylori (H pylori) VacA gene in E.coli on the gastric cancer cell line SGC7901. METHODS: The engineered bacteria pET32a-VacA-E.coli BL21 (DE3) was cultured and analyzed. The isopropyl-β-D-thiogalactopyranoside (IPTG) was used to induce the expression of the recombinant protein. Then the purified protein was added into the gastric cancer cells, and the growth and morphological changes of the cell were observed by the inverted microscope and electron microscope. RESULTS: The proliferation of the gastric cancer cells was inhibited after the recombinant protein was added. The effect of VacA was reduced or even failed. About 10%-20% SGC cells were lightly vacuolated, and only a few of them were severely vacuolated. The microvilli on the cell surface disappeared, and the volume of some cells was decreased. Apoptosis was induced by the recombinant VacA in some SGC cells. CONCLUSION: The recombinant protein can inhibit the proliferation of gastric cancer cell, and the vacuolated effect becomes weakened and even fails.
出处 《世界华人消化杂志》 CAS 北大核心 2006年第1期92-95,共4页 World Chinese Journal of Digestology
基金 江苏省科技厅资助项目 No.BS2004021 江苏大学高级人才资助项目 No.JDG2004008~~
关键词 幽门螺杆菌 空泡毒素 重组蛋白 胃癌细胞 Helicobacter pylori Vacuolate cytotoxin Recombinant protein Gastric cancer cell
  • 相关文献

参考文献4

二级参考文献24

  • 1Fu-Bo Xue~1 Yong-Yong Xu~1 Yi Wan~1 Bo-Rong Pan~2 Jun Ren~2 Dai-Ming Fan~3 1 Department of Health Statistics,Department of2 Oncology3 Gastroenterology of XiJing Hospital,the Fourth Military Medical University,Xi’an 710032,Shaanxi Province,China.Association of H.pylori infection with gastric carcinoma:a Meta analysis[J].World Journal of Gastroenterology,2001,7(6):801-804. 被引量:66
  • 2[1]Parsonnet J,Friedman GD,Vandersteen DP.Helicobacter pylori infection and the risk of gastric carcinoma.New Engl J Med,1991; 325:1127 - 1131
  • 3[2]Parsonnet J,Hansen S,Rodriguez L.Helicobacter pylori infection and gastric lymphorma.NewEnglJMed,1994;330:1267-1271
  • 4[3]Wotherspoon AC.Gastric MALT lymphoma and Helicobacter pylori.Yale J Biol Med,1997;69:61-68
  • 5[4]The European Helicobacter pylori study Group (EHPSA).Current european concepts in the management of Helicobacter pylori infection-the Maastricht consensus report.Gut,1997;41:8 - 13
  • 6[7]Hansson LE,Nyren O,Hsing AW.The risk of stomach cancer in patients with gastric cancer or duodenal ulcer disease.New Engl J Med,1996; 335:242 - 249
  • 7[8]Cerutti PA.Oxy-radicals and cancer.Lancet,1994;344:862-863
  • 8[9]Renault B,Van den Broek M,Fodde R.Base transitions are the most frequent genetic changes at p53 in gastric cancer.Cancer Res,1993; 53:2614 - 2617
  • 9[10]Hongyo T,Buzard GS,Palli D.Mutations of the K-ras and p53 genes in gastric edenocarcinoma from a hign-incidence ragion around Florence,Italy.Cancer Res,1995; 55:2665 - 2672
  • 10[11]Imazeki F,Omata M,Nose H,Ohto M,Isono K.p53 gene mutations in gastric and esophagel Cancers.Gastroenterology,1992; 103:892 - 896

共引文献83

同被引文献42

  • 1周军,曾浔,尹焱,郭欣,张建中.幽门螺杆菌cagA基因及蛋白序列多态性分析[J].世界华人消化杂志,2004,12(6):1307-1312. 被引量:4
  • 2邵世和,刘继斌,段秀杰,王华.亚硒酸钠对幽门螺杆菌所致小鼠胃黏膜组织损伤的免疫保护作用[J].营养学报,2005,27(5):394-396. 被引量:3
  • 3党双锁,王宏仓,贾晓黎,袁利超,王宝峰,张欣,张正国,程延安.幽门螺杆菌vacA基因重组表达的包涵体复性及ELISA方法的建立[J].世界华人消化杂志,2005,13(20):2500-2503. 被引量:9
  • 4段秀杰,邵世和,闻平,王文凯.幽门螺杆菌VacA重组蛋白表达、纯化及鉴定[J].中国微生态学杂志,2006,18(1):27-28. 被引量:2
  • 5赵刚,詹文华,严燕国,马晋平,彭俊生,董文广,蔡世荣,何裕隆.靶向siRNA抑制幽门螺杆菌vacA表达[J].世界华人消化杂志,2006,14(5):470-475. 被引量:4
  • 6HIYAMA T, HARUMA K, KITADAI Y, et al. Clinicopathological features of gastric mucosa associated lymphoid tissue lymphoma: a comparison with diffuse large B-cell lymphoma without a mucosa-associated lymphoid tissue lymphoma component[J]. Journal of Gastroenterology and Hepatology, 2001, 16(7): 734-739.
  • 7DELCHIER J C, LAMARQUE D, LEVY M, et al. Helicobacter pylori and gastric lymphoma: high seroprevalence of CagA in diffuse large B-cell lymphoma but not in low-grade lymphoma of mucosaassociated lymphoid tissue type[J]. American Journal of Gastroenterology, 2001, 96(8): 2 324-2 328.
  • 8MORGNER A, MIEHLKE St FISCHBACH W, et al. Complete remission of primary high-grade B-cell gastric lymphoma after cure of Helicobacter pylori infection[J]. Journal of Clinical Oncology, 2001, 19(7): 2 041-2 048.
  • 9MARCHI U D, CAMPELLO S, SZABO I, et al. Bax does not directly participate in the Ca^2+-induced permeability transition of isolated mitochondria[J]. Journal of Biological Chemistry, 2004, 279(36): 37415-37 422.
  • 10GALMICHE A, RASSOW J, DOYE A, et al. The Nterminal 34 kD fragment of Helicobacter pylori vacuolating cytotoxin targets mitochondria and induces cytochrome c release[J]. Journal of European Molecular Biology Organization, 2000, 19(23): 6361- 6 370.

引证文献4

二级引证文献11

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部