Infection with wild-type H. pylori resulted in a reduction of Wnt/β-catenin activity in nonpolar gastric cancer cells. By transfection and transduction, this was, in a dose-dependent manner, attributable to CagA’s C-terminus, with its high affinity for the plasma membrane. The N-terminus represented a functional counterpart and was diffusely present in the cytosol. Methodological limitations became apparent; in addition to polarity, interpretation required consideration of the intrinsic Wnt/β-catenin activity level and the intracellular CagA concentration range.
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Infection with wild-type H. pylori resulted in a reduction of Wnt/β-catenin activity in nonpolar gastric cancer cells. By transfection and transduction, this was, in a dose-dependent manner, attributable to CagA’s C-terminus, with its high affinity for the plasma membrane. The N-terminus represented a functional counterpart and was diffusely present in the cytosol. Methodological limitations became apparent; in addition to polarity, interpretation required consideration of the intrinsic Wnt/β-c...
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