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- W2895720129 abstract "Chronic inflammation from reflux disease has been implicated as part of the development of esophageal adenocarcinoma. Toll-like receptors (TLRs), a component of the innate immune system, have been implicated in mediating hyperplasia and metaplasia in response to inflammatory stimuli. Increased TLR4 in human esophageal cancer has been correlated with its carcinogenesis. We hypothesized that TLR4 mediates proliferation of human esophageal adenocarcinoma cells.Normal human esophageal (HET1A) and adenocarcinoma (OE33, FLO-1) cell lines were cultured using standard techniques. TLR4 was measured at baseline and in response to reflux stimuli. All cell lines were treated with the TLR4 agonist lipopolysaccharide for 48 hours, and growth response was measured. Changes in myeloid differentiation primary response 88 (MyD88), tumor necrosis factor receptor associated factor 6 (TRAF6), and nuclear factor-κB (NF-κB) activity were measured during lipopolysaccharide treatment. All cell lines had NF-κB inhibited, and growth rate response was measured.TLR4 was expressed in all cell lines, with increased baseline expression in adenocarcinoma cell lines (p < 0.05). Reflux stimuli increased TLR4 expression (p < 0.01) in normal esophageal cells. After treatment with lipopolysaccharide, all cell lines showed significant increases in proliferation (p < 0.05) due to the NF-κB pathway, and their growth rate was reduced with NF-κB inhibition (p < 0.05).TLR4 is consistently detectable in esophageal cell lines and most highly expressed in adenocarcinoma. TLR4 expression increases in an inflammatory model of reflux disease. TLR4 activation results in increased proliferation due to the TLR4-MyD88-TRAF6-NF-κB signaling pathway, and inhibition of NF-κB leads to decreased esophageal cell growth. These findings suggest TLR4 may be a target to suppress esophageal cancer growth." @default.
- W2895720129 created "2018-10-12" @default.
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- W2895720129 date "2019-01-01" @default.
- W2895720129 modified "2023-10-16" @default.
- W2895720129 title "Toll-Like Receptor-4 Is a Mediator of Proliferation in Esophageal Adenocarcinoma." @default.
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- W2895720129 doi "https://doi.org/10.1016/j.athoracsur.2018.08.014" @default.
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