A new role of NUAK1: directly phosphorylating p53 and regulating cell proliferation

It has been suggested that adenosine monophosphate-activated protein kinase (AMPK) and 12 AMPK-related kinases (ARK), including novel (nua) kinase family 1 (NUAK1), are activated by master kinase LKB1, a major tumor suppressor. Apart from evidence to suggest that NUAK1 participates in induction of t...

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Veröffentlicht in:Oncogene 2011-06, Vol.30 (26), p.2933-2942
Hauptverfasser: Hou, X, Liu, J-E, Liu, W, Liu, C-Y, Liu, Z-Y, Sun, Z-Y
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container_issue 26
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container_title Oncogene
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creator Hou, X
Liu, J-E
Liu, W
Liu, C-Y
Liu, Z-Y
Sun, Z-Y
description It has been suggested that adenosine monophosphate-activated protein kinase (AMPK) and 12 AMPK-related kinases (ARK), including novel (nua) kinase family 1 (NUAK1), are activated by master kinase LKB1, a major tumor suppressor. Apart from evidence to suggest that NUAK1 participates in induction of tumor survival, invasion and p53-independent cellular senescence, its detailed biological functions remain unclear. Here we showed that in the presence of wild-type LKB1, NUAK1 directly interacts with and phosphorylates p53 in vitro and in vivo . The phosphorylation of p53 induced by LKB1 required the kinase activity of NUAK1 and phosphorylation of NUAK1 at Thr211 by LKB1 was essential for its kinase activity, which leads to the conclusion that LKB1 activates NUAK1 and regulates phosphorylation of p53 through the NUAK1 kinase, at least partially. LKB1/NUAK1 activation leads to cell cycle arrest at the G 1 /S border by inducing expression of p21/WAF1. Under the regulation of LKB1, NUAK1 interacts with p53 in the nucleus and binds to the p53-responsive element of p21/WAF1 promoter. These findings have highlighted a novel role for NUAK1 in LKB1-related signaling pathways; NUAK1 can regulate cell proliferation and exert tumor suppression through direct interaction with p53.
doi_str_mv 10.1038/onc.2011.19
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subjects 631/136/2091
631/67/581
631/80/86
Adenosine kinase
AMP
Apoptosis
Biological and medical sciences
Cell activation
Cell Biology
Cell cycle
Cell Cycle - genetics
Cell Cycle - physiology
Cell growth
Cell Nucleus - genetics
Cell Nucleus - metabolism
Cell physiology
Cell Proliferation
Cell transformation and carcinogenesis. Action of oncogenes and antioncogenes
Cells, Cultured
Cyclin-dependent kinase inhibitor p21
Cyclin-Dependent Kinase Inhibitor p21 - genetics
Cyclin-Dependent Kinase Inhibitor p21 - metabolism
Cyclin-Dependent Kinase Inhibitor p21 - physiology
Fundamental and applied biological sciences. Psychology
Gene expression
Genes, Tumor Suppressor - physiology
Genetic aspects
HeLa Cells
Human Genetics
Humans
Internal Medicine
Kinases
LKB1 protein
Medicine
Medicine & Public Health
Molecular and cellular biology
Neoplasms - genetics
Neoplasms - metabolism
Oncology
original-article
p53 Protein
Phosphorylation
Physiological aspects
Promoter Regions, Genetic
Protein Binding - physiology
Protein kinase
Protein Kinases - genetics
Protein Kinases - metabolism
Protein Kinases - physiology
Regulatory sequences
Repressor Proteins - genetics
Repressor Proteins - metabolism
Repressor Proteins - physiology
Senescence
Signal transduction
Signal Transduction - genetics
Signal Transduction - physiology
Tumor proteins
Tumor suppressor genes
Tumor Suppressor Protein p53 - metabolism
Tumors
title A new role of NUAK1: directly phosphorylating p53 and regulating cell proliferation
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