Purpose: To explore the significance of
GTP-binding protein 4 (GTPBP4) in
breast cancer. Methods: Firstly, GTPBP4 expression analysis was performed in TIMER and UALCAN databases. Subsequently, the TCGA cohort and multiple Gene Expression Omnibus Cohorts were used as validation for GTPBP4 expression. Besides, we also evaluated the diagnostic value of GTPBP4 in TCGA Cohort and multiple GEO Cohorts. The predictive effect of GTPBP4 in
breast cancer was then assessed using survival analysis. Then we look at the role of GTPBP4 in the immune milieu and create a Nomogram to help patients with
breast cancer understand their prognosis. Finally, in vitro tests were carried out to look at GTPBP4 expression and function in
breast cancer cell lines. Results: GTPBP4 is an independent
breast cancer prognostic factor that is upregulated in the disease (p < 0.05). Enrichment analysis showed that GTPBP4 was associated with multiple functions and pathways. In addition, GTPBP4 is associated with a variety of immune cell types (p < 0.05). PCR assay showed that GTPBP4 expression was up-regulated in
breast cancer cell lines. The activity, migration, and proliferation of
breast cancer cells were considerably reduced after GTPBP4 knockdown in the
CCK-8, Transwell, and Scratch assays. Conclusions: Our research discovered a new
breast cancer biomarker that can be used as a guide for
breast cancer diagnosis and treatment.