» Articles » PMID: 18408738

P27 Kip1 Nuclear Localization and Cyclin-dependent Kinase Inhibitory Activity Are Regulated by Glycogen Synthase Kinase-3 in Human Colon Cancer Cells

Overview
Specialty Cell Biology
Date 2008 Apr 15
PMID 18408738
Citations 19
Authors
Affiliations
Soon will be listed here.
Abstract

The cellular mechanisms regulating intestinal differentiation are poorly understood. Sodium butyrate (NaBT), a short-chain fatty acid, increases p27 Kip1 expression and induces cell cycle arrest associated with intestinal cell differentiation. Here, we show that treatment of intestinal-derived cells with NaBT induced G0/G1 arrest and intestinal alkaline phosphatase, a marker of differentiation, activity and mRNA expression; this induction was attenuated by inhibition of glycogen synthase kinase-3 (GSK-3). Moreover, treatment with NaBT increased the nuclear, but not the cytosolic, expression and activity of GSK-3beta. NaBT decreased cyclin-dependent kinase CDK2 activity and induced p27 Kip1 expression; inhibition of GSK-3 rescued NaBT-inhibited CDK2 activity and blocked NaBT-induced p27 Kip1 expression in the nucleus but not in the cytoplasm. In addition, we demonstrate that NaBT decreased the expression of S-phase kinase-associated protein 2 (Skp2), and this decrease was attenuated by GSK-3 inhibition. Furthermore, NaBT increased p27 Kip1 binding to CDK2, which was completely abolished by GSK-3 inhibition. Overexpression of an active form of GSK-3beta reduced Skp2 expression, increased p27 Kip1 in the nucleus and increased p27 Kip1 binding to CDK2. Our results suggest that GSK-3 not only regulates nuclear p27 Kip1 expression through the downregulation of nuclear Skp2 expression but also functions to regulate p27 Kip1 assembly with CDK2, thereby playing a critical role in the G0/G1 arrest associated with intestinal cell differentiation.

Citing Articles

miR-27a-3p regulates intestinal cell proliferation and differentiation through Wnt/β-catenin signalling.

Li C, Zhou Y, Jiang Y, Yin Z, Weiss H, Wang Q Cell Prolif. 2024; 58(2):e13757.

PMID: 39329245 PMC: 11839187. DOI: 10.1111/cpr.13757.


Targeting cell death pathways in intestinal ischemia-reperfusion injury: a comprehensive review.

Wang F, Huang H, Wei X, Tan P, Wang Z, Hu Z Cell Death Discov. 2024; 10(1):112.

PMID: 38438362 PMC: 10912430. DOI: 10.1038/s41420-024-01891-x.


Repurposing Niclosamide for Targeting Pancreatic Cancer by Inhibiting Hh/Gli Non-Canonical Axis of Gsk3β.

Kaushal J, Bhatia R, Kanchan R, Raut P, Mallapragada S, Ly Q Cancers (Basel). 2021; 13(13).

PMID: 34206370 PMC: 8269055. DOI: 10.3390/cancers13133105.


miR-422a inhibits cell proliferation in colorectal cancer by targeting AKT1 and MAPK1.

Wei W, Nian X, Wang S, Jiao H, Wang Y, Xiao Z Cancer Cell Int. 2017; 17:91.

PMID: 29118671 PMC: 5664829. DOI: 10.1186/s12935-017-0461-3.


Epidermal Growth Factor Receptor Cell Proliferation Signaling Pathways.

Wee P, Wang Z Cancers (Basel). 2017; 9(5).

PMID: 28513565 PMC: 5447962. DOI: 10.3390/cancers9050052.


References
1.
Evers B, Ko T, Li J, Thompson E . Cell cycle protein suppression and p21 induction in differentiating Caco-2 cells. Am J Physiol. 1996; 271(4 Pt 1):G722-7. DOI: 10.1152/ajpgi.1996.271.4.G722. View

2.
Zavitz K, Zipursky S . Controlling cell proliferation in differentiating tissues: genetic analysis of negative regulators of G1-->S-phase progression. Curr Opin Cell Biol. 1998; 9(6):773-81. DOI: 10.1016/s0955-0674(97)80077-4. View

3.
Espinosa L, Ingles-Esteve J, Aguilera C, Bigas A . Phosphorylation by glycogen synthase kinase-3 beta down-regulates Notch activity, a link for Notch and Wnt pathways. J Biol Chem. 2003; 278(34):32227-35. DOI: 10.1074/jbc.M304001200. View

4.
Phiel C, Klein P . Molecular targets of lithium action. Annu Rev Pharmacol Toxicol. 2001; 41:789-813. DOI: 10.1146/annurev.pharmtox.41.1.789. View

5.
Forde J, Dale T . Glycogen synthase kinase 3: a key regulator of cellular fate. Cell Mol Life Sci. 2007; 64(15):1930-44. PMC: 11136264. DOI: 10.1007/s00018-007-7045-7. View