کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2047574 | 1073994 | 2015 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Protein phosphatase PP1-NIPP1 activates mesenchymal genes in HeLa cells Protein phosphatase PP1-NIPP1 activates mesenchymal genes in HeLa cells](/preview/png/2047574.png)
• NIPP1 activates mesenchymal genes in HeLa cells.
• NIPP1 endows HeLa cells with contractile properties.
• The NIPP1-induced transdifferentiation is mediated by protein phosphatase 1.
The deletion of the protein phosphatase-1 (PP1) regulator known as Nuclear Inhibitor of PP1 (NIPP1) is embryonic lethal during gastrulation, hinting at a key role of PP1-NIPP1 in lineage specification. Consistent with this notion we show here that a mild, stable overexpression of NIPP1 in HeLa cells caused a massive induction of genes of the mesenchymal lineage, in particular smooth/cardiac-muscle and matrix markers. This reprogramming was associated with the formation of actin-based stress fibers and retracting filopodia, and a reduced proliferation potential. The NIPP1-induced mesenchymal transition required functional substrate and PP1-binding domains, suggesting that it involves the selective dephosphorylation of substrates of PP1-NIPP1.
Journal: FEBS Letters - Volume 589, Issue 12, 22 May 2015, Pages 1314–1321