Induction of human beta-defensin-2 mRNA expression by Helicobacter pylori in human gastric cell line MKN45 cells on cag pathogenicity island.

Induction of human beta-defensin-2 mRNA expression by Helicobacter pylori in human gastric cell line MKN45 cells on cag pathogenicity island.
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幽门螺杆菌在 cag 致病岛上的人胃细胞系 MKN45 细胞中诱导人 β-防御素-2 mRNA 表达。

DOI:
10.1006/bbrc.1999.1452
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发表时间:
1999
影响因子:
3.1
通讯作者:
Hirayama,T
Hirayama,T
中科院分区:
生物学4区
文献类型:
--
作者:
Wada,A;Mori,N;Oishi,K;Hojo,H;Nakahara,Y;Hamanaka,Y;Nagashima,M;Sekine,I;Ogushi,K;Niidome,T;Nagatake,T;Moss,J;Hirayama,T

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幽门螺杆菌是胃炎、消化性溃疡和胃癌的病原体。人β-防御素-2(human β-defensin-2,hBD-2)是一种抗菌肽,在多种上皮组织中是宿主抵抗细菌感染的重要防御系统之一。研究了H. pylori对MKN 45胃粘膜细胞hBD-2 mRNA表达的影响。H. pylori培养液可增加MKN 45细胞hBD-2 mRNA的表达,而培养滤液则无此作用;肠407细胞未检出pylori。在H. pylori菌株OHPC 0002缺乏cag致病岛(派),在MKN 45细胞中不诱导hBD-2 mRNA。这些结果表明,H. pylori cag派在MKN 45细胞中对hBD-2 mRNA的诱导起关键作用。将MKN 45细胞暴露于鼠伤寒沙门氏菌、S. S.J.伤寒沙门氏菌(S.都柏林,而不是大肠杆菌ML 35也导致hBD-2 mRNA的诱导。
Helicobacter pylori is an etiological agent of gastritis, peptic ulcer, and gastric cancer. Human β-defensin-2 (hBD-2) is an antimicrobial peptide which belongs to one of the most important host defense systems against bacterial infection in several epithelial tissues. We studied the effect of H. pylori on the expression of hBD-2 mRNA in MKN45 gastric mucosal cells. H. pylori, but not culture filtrate, increased the hBD-2 mRNA level in MKN45 cells; the inductive effect of H. pylori was not detected with Intestine 407 cells. Among H. pylori strains, strain OHPC0002, which lacks a cag Pathogenicity Island (PAI), did not induce hBD-2 mRNA in MKN45 cells. These results suggested that H. pylori cag PAI is critical for the induction of hBD-2 mRNA in MKN45 cells. Exposure of MKN45 cells to Salmonella typhimurium, S. enteritidis, S. typhi, and S. dublin, but not Escherichia coli ML35, also resulted in induction of hBD-2 mRNA.
DOI: 10.1016/0966-842x(96)81513-7
发表时间: 1996-02
影响因子: 15.9
作者:
S. C. Winans;Drusilla. Burns;P. Christie
通讯作者: S. C. Winans;Drusilla. Burns;P. Christie
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DOI: --
发表时间: 1997
影响因子: 4.4
作者:
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DOI: 10.1073/pnas.94.14.7595
发表时间: 1997-07-08
影响因子: 11.1
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通讯作者: Falkow, S
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发表时间: 1998-09-01
影响因子: 15.9
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