ArticleHereditas2024
DNA hypomethylation of INHBA promotes tumor progression and predicts prognosis and immune status of gastric cancer.
Article in Hereditas, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveGastric cancer (GC) is characterized by its high malignancy and poor prognosis. However, the role of Inhibin subunit beta A (INHBA) in GC remains insufficiently understood. This study aims to comprehensively evaluate the clinical significance, biological roles, and possible mechanisms of INHBA in GC.
methodsExpression levels and survival analyses of the Inhibin beta family were assessed using online databases. A prediction model based on INHBA was developed. In addition, the associations between INHBA expression and immune status, and chemotherapy sensitivity were explored. In vitro experiments were conducted to investigate the biological impact of INHBA on GC cells. Pyrosequencing and the DNA methylation inhibitor, 5-AZA-2'-deoxycytidine (5-AZA-dC) were employed to elucidate the mechanisms underlying INHBA function.
resultsOur findings revealed that INHBA exhibited high expression in GC patients, and elevated INHBA expression correlated with worse outcomes. We developed a novel nomogram incorporating INHBA, age, and tumor node metastasis (TNM) stage to predict the prognosis of GC patients. Additionally, INHBA was found to be associated with suppressed infiltration of immune cells and chemosensitivity. Functionally, INHBA promoted the proliferation and invasiveness of GC cells. Mechanistically, pyrosequencing revealed DNA Hypomethylation of INHBA in the first exon region, and the effects of INHBA silencing were rescued by 5-AZA-dC treatment.
conclusionOur study suggests that DNA hypomethylation of INHBA contributes to the progression of GC. Furthermore, INHBA holds promise as a valuable biomarker for prognostic evaluation and immune status prediction in GC patients.
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