Molecular mimicry between Helicobacter pylori antigens and H+, K+ --adenosine triphosphatase in human gastric autoimmunity.
Molecular mimicry between Helicobacter pylori antigens and H+, K+ --adenosine triphosphatase in human gastric autoimmunity.
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DOI:
10.1084/jem.20030530
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发表时间:
2003-10-20
影响因子:
15.3
通讯作者:
Del Prete, G
中科院分区:
文献类型:
--
作者:
Amedei, A;Bergman, MP;Appelmelk, BJ;Azzurri, A;Benagiano, M;Tamburini, C;van der Zee, R;Telford, JL;Vandenbroucke-Grauls, CMJE;D'Elios, MM;Del Prete, G
Autoimmune gastritis and Helicobacter pylori–associated gastric atrophy develop through similar mechanisms involving the proton pump H+,K+–adenosine triphosphatase as autoantigen. Here, we report that H. pylori–infected patients with gastric autoimmunity harbor in vivo–activated gastric CD4+ T cells that recognize both H+,K+–adenosine triphosphatase and H. pylori antigens. We characterized the submolecular specificity of such gastric T cells and identified cross-reactive epitopes from nine H. pylori proteins. Cross-reactive H. pylori peptides induced T cell proliferation and expression of T helper type 1 functions. We suggest that in genetically susceptible individuals, H. pylori infection can activate cross-reactive gastric T cells leading to gastric autoimmunity via molecular mimicry.
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通讯作者:
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