OTUD3 is a deubiquitinase that hydrolyzes Lys-6- and Lys-11-linked polyubiquitin chains, modulating protein stability. Its roles are context-dependent:
Tumor Suppression: Stabilizes PTEN in breast cancer, inhibiting PI3K/AKT signaling .
Oncogenic Activity: Stabilizes ACTN4 in hepatocellular carcinoma (HCC), promoting metastasis .
Glioma Pathogenesis: Low OTUD3 expression correlates with reduced PTEN levels and poor patient survival .
Specificity: Recognizes the central region (192-220AA) or full-length OTUD3 (108-398AA) .
Sensitivity: Detects OTUD3 at concentrations as low as 1:2000 dilution in WB .
Functional Assays: Validated in xenograft models to study OTUD3’s role in tumor growth and metastasis .
Glioma: OTUD3 mRNA and protein levels are significantly reduced in glioma cells compared to normal astrocytes, correlating with PTEN downregulation and shorter survival .
HCC: OTUD3 stabilizes ACTN4 via deubiquitination, driving tumor proliferation and metastasis .
Antibody Utility: Enables precise detection of OTUD3 in diverse cancer models, supporting mechanistic and prognostic studies .