The pathophysiological function of Helicobacter pylori CagA oncoprotein that is processed in gastric epithelial cells
The pathophysiological function of Helicobacter pylori CagA oncoprotein that is processed in gastric epithelial cells
批准号:
23890037
负责人:
SAITO Yasuhiro
金额:
$2.08万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Research Activity Start-up
财政年份:
2011
资助国家:
日本
项目状态:
已结题
起止时间:
2011 至 2012
中文摘要
CagA阳性幽门螺杆菌的感染与胃癌的发生有关。CagA阳性的幽门螺杆菌在细菌细胞中产生CagA蛋白,并将其注入胃上皮细胞。易位的CagA靶向SHP2癌蛋白,解除对SHP2功能的调控。本研究观察了CagA在胃上皮细胞中的亚细胞分布,并观察到CagA在胞核和胞膜中的分布。由于核SHP2激活了Wnt信号,这一结果暗示核CagA通过解除核SHP2的调控而异常激活Wnt通路。
英文摘要
Infection of the cagA-positive Helicobacter pylori relates to the induction of gastric cancer. The cagA-positive H. pylori produces CagA protein in the bacterial cells and injects it into gastric epithelial cells. The translocated CagA targets SHP2 oncoprotein and deregulates the function of SHP2. The subcellular distribution of CagA in gastric epithelial cells was investigated in this study and CagA was observed in the nucleus as well as cytoplasmic membrane. Since nuclear SHP2 activates Wnt signaling, the results implicate that nuclear CagA aberrantly activates the Wnt pathway via deregulation of nuclear SHP2.
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Polarity-regulating kinase partitioning-defective 1b (PAR1b) phosphorylates guanine nucleotide exchange factor H1 (GEF-H1) to regulatRhoA-dependent actin cytoskeletal reorganization
极性调节激酶分配缺陷 1b (PAR1b) 磷酸化鸟嘌呤核苷酸交换因子 H1 (GEF-H1) 以调节 RhoA 依赖性肌动蛋白细胞骨架重组
DOI:
--
发表时间:
2011
期刊:
J. Biol. Chem
影响因子:
--
作者:
[Yamahashi Y, Saito Y, Murata-Kamiya N, Hatakeyama M]
通讯作者:
Hatakeyama M
Interaction of the Helicobacter pylori CagA oncoprotein with SHP2 in the nucleus
幽门螺杆菌 CagA 癌蛋白与细胞核中 SHP2 的相互作用
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
[Kuwahara, M., Iwamura, C., Shinoda, K.,Tofukuji, S., Suzuki, J., Nakayama, T., andYamashita, M., 齊藤康弘]
通讯作者:
齊藤康弘
Involvement of multiple tyrosine kinases in antagonizing parafibromin-mediated activation of Wnt signaling by SHP2 複数のチロシンキナーゼによる SHP2/parafibromin 依存的 Wnt シグナル活性化の拮抗制御
多种酪氨酸激酶参与 SHP2 拮抗副纤维蛋白介导的 Wnt 信号传导激活 多种酪氨酸激酶对 SHP2/副纤维蛋白依赖性 Wnt 信号激活的竞争性调节
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
[高橋昌史, 齊藤康弘, 畠山昌則]
通讯作者:
畠山昌則
Pragmin is a human EPIYA-containing protein targeted by H.pylori CagA oncoprotein
Pragmin 是一种含有 EPIYA 的人类蛋白,被幽门螺杆菌 CagA 癌蛋白靶向
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[Abe H, Maeda D, Hino R, Otake Y, Isogai M, Ushiku AS, Matsusaka K,Kunita A, Ushiku T, Uozaki H,Tateishi Y, Hishima T, Iwasaki Y, Ishikawa S, Fukayama M, サファリファテメ]
通讯作者:
サファリファテメ
Helicobacter pylori CagA oncoprotein targets epithelial polarity to elicit aberrant cell proliferation.Helicobacter pylori CagA は上皮細胞極性破 壊により異常な細胞増殖を誘導する
幽门螺杆菌 CagA 癌蛋白以上皮极性为目标,引发异常细胞增殖。幽门螺杆菌 CagA 通过破坏上皮细胞极性来诱导异常细胞增殖。
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[齊藤康弘, 紙谷尚子, 畠山昌則]
通讯作者:
畠山昌則
共 8 条
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