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BIOMARKER:
PTP4A3 overexpression
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Other names: PTP4A3, Protein Tyrosine Phosphatase 4A3, Protein-Tyrosine Phosphatase Of Regenerating Liver 3, Protein Tyrosine Phosphatase Type IVA, Member 3, Protein Tyrosine Phosphatase Type IVA 3, Phosphatase Of Regenerating Liver 3, PRL-3, PRL-R, PRL3, Potentially Prenylated Protein Tyrosine Phosphatase, Protein-Tyrosine Phosphatase 4a3
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This study indicated that elevated USP4 predicted a poor index for gastric cancer patients, and mediated gastric cancer cell growth by regulating PRL-3/NF-κB signaling, which suggested USP4 may be a novel therapeutic target for gastric cancer.
Taken together , our study revealed that PRL-3 may be involved in migration and invasion of glioma by dephosphorylating β3-tubulin. It is tempting to speculate that dephosphorylation of β3-tubulin by PRL-3 results in assembly of the cytoskeleton and facilitate the cell migration and/or tumor metastasis.
Furthermore, the p38 and PI3K/AKT pathways were observed to mediate the PRL-3-induced expression of TGFB1 and the subsequent activation of FAK, while the activation of FAK in turn stimulated activation of the p38 and PI3K/AKT pathways, forming a PRL-3-triggered AKT/p38/TGFB1/FAK positive feedback loop. Collectively, our findings indicate that the PTP PRL-3 plays a crucial role in the progression of HCC and provides an example of how co-amplified genes work together in HCC.