Chronic gastritis, the hallmark of Helicobacter pylori pathology, is mostly induced by CagA-dependent activation of canonical NF-κB signaling. This study reveals that lymphotoxin released by H. pylori infected gastric epithelial cells upon canonical NF-κB activation, acts both in an autocrine manner and in trans on bystander epithelial cells to induce a CagA-independent activation of alternative NF-κB signaling via LTβR. This feed-forward mechanism is further enhanced by an H. pylori infection-driven cell-intrinsic expression of LIGHT, resulting in exacerbated gastritis.
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Chronic gastritis, the hallmark of Helicobacter pylori pathology, is mostly induced by CagA-dependent activation of canonical NF-κB signaling. This study reveals that lymphotoxin released by H. pylori infected gastric epithelial cells upon canonical NF-κB activation, acts both in an autocrine manner and in trans on bystander epithelial cells to induce a CagA-independent activation of alternative NF-κB signaling via LTβR. This feed-forward mechanism is further enhanced by an H. pylori infection-d...
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