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OTUD7B promotes cell migration and invasion, predicting poor prognosis of gastric cancer. | LitMetric
Background : OTUD7B, a member of the ovarian tumor (OTU) protein superfamily, functions as a deubiquitinating enzyme and is associated with various biological processes and disease conditions, including tumors. In this study, we aimed to explore the expression patterns, prognostic significance, and the functional roles and underlying mechanisms of OTUD7B in gastric cancer (GC).Materials And Methods : Using a blend of bioinformatics, clinical case reviews, and molecular experiments, we evaluated the expression of OTUD7B in GC at both mRNA and protein levels. We examined the relationship between OTUD7B expression and clinicopathological characteristics of GC patients. Additionally, in vitro assays were utilized to assess the effects of OTUD7B on the migratory and invasive capabilities of GC cells. RNA sequencing analysis was conducted to identify critical genes and pathways linked to OTUD7B in GC.Results : OTUD7B was found to be significantly overexpressed in GC, both at mRNA and protein levels. Higher levels of OTUD7B were positively associated with advanced tumor TNM stage, higher histological grade, and presence of lymph/vein invasion. These correlations were indicative of poorer overall survival (OS) and disease-free survival (DFS) in GC patients. In vitro assays revealed that genetic knockout of OTUD7B markedly reduced the migration and invasion of GC cells, while overexpression of OTUD7B led to enhanced cellular migration and invasion. Furthermore, RNA sequencing and bioinformatic analyses indicated that the absence of OTUD7B suppressed signaling pathways related to cancer progression, metastasis, and metabolism. Mechanistically, OTUD7B likely promotes GC metastasis through the WNT signaling pathway, specifically targeting β-catenin.Conclusions : OTUD7B serves as a novel marker for poor prognosis in GC and actively promotes tumor metastasis. Our results shed light on the signaling pathways regulated by OTUD7B and highlight potential targets for therapeutic intervention.
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