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HDAC6 interacts with PTPN1 to enhance melanoma cells progression.

Biochem. Biophys. Res. Commun.2018 Jan 22;495(4):2630-2636. Epub 2017 Dec 24
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摘要


Histone deacetylase 6 (HDAC6) plays an important role in oncogenic transformation and cancer metastasis. Our previous study has demonstrated that HDAC6 was highly expressed in melanoma cells, and contributed to the proliferation and metastasis of melanoma cells. However, the underlying mechanism of HDAC6 in melanoma metastasis and progression remains largely unclear. In this study, we reported that HDAC6 directly interacted with Tyrosine-protein phosphatase non-receptor type 1 (PTPN1) by performing co-immunoprecipitation (Co-IP) combined with liquid chromatography tandem mass spectrometry (LC-MS/MS). HDAC6 increased the protein level of PTPN1 independent of histone modifying activity. In addition, PTPN1 promoted proliferation, colony formation and migration while decreased apoptosis of melanoma cells through activating extracellular signal-regulated kinase 1/2 (ERK1/2). Furthermore, we found that matrix metallopeptidase 9 (MMP9) was increased by HDAC6/PTPN1/ERK1/2 axis, which might serve as a mechanism for melanoma invasion and metastasis. In conclusion, HDAC6 might enhance aggressive melanoma cells progression via interacting with PTPN1, which was independent of its histone modifying activity.

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