Protein-tyrosine phosphatase 1B is required for HER2/Neu-induced breast cancer.


The protein-tyrosine phosphatase 1B (PTP1B; PTPN1) is an important regulator of mammalian metabolism and also helps control signaling by growth factors, cytokines, and extracellular matrix. Gene knockout studies in mice established PTP1B as a key negative regulator of the insulin and leptin receptors. Experiments using PTP1B(-/-) fibroblast lines, dominant… (More)

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