Abstract
Helicobacter pylori (H. pylori) infection is widely acknowledged as the primary risk factor for gastric cancer, facilitating its progression via the Correa cascade. Concurrently, Hexokinase Domain Containing 1 (HKDC1) has been implicated in the mediation of aerobic glycolysis, contributing to tumorigenesis across various cancers. However, the precise role of HKDC1 in the inflammatory transformation associated with H. pylori-induced gastric cancer remains elusive. In this study, transcriptome sequencing revealed a significant correlation between HKDC1 and H. pylori-induced gastric cancer. Subsequent validation using qRT-PCR, immunohistochemistry, and Western blot analysis confirmed elevated HKDC1 expression in both human and murine gastritis and gastric tumors. Moreover, in vitro and in vivo experiments demonstrated that H. pylori infection up-regulates TGF-β1 and p-Smad2, thereby activating the epithelial-mesenchymal transition (EMT) pathway, with HKDC1 playing a pivotal role. Suppression of HKDC1 expression or pharmacological inhibition of TGF-β1 reversed EMT activation, consequently reducing gastric cancer cell proliferation and metastasis. These results underscore HKDC1's essential contribution to H. pylori-induced gastric cancer progression via EMT activation.
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