The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Regulation of epithelial tight junction assembly and disassembly by AMP-activated protein kinase
Open accessAbstract
AMP-activated protein kinase (AMPK) is a serine/threonine protein kinase that plays an important role in maintaining cellular energy balance. The activity of AMPK is modulated both by the cellular AMP-to-ATP ratio and by upstream kinases. Recently, AMPK was shown to be phosphorylated and activated by LKB1, a protein kinase that plays a conserved role in epithelial polarity regulation in mammals and Drosophila . Here, we investigate the involvement of AMPK in the regulation of epithelial tight junction assembly and cell polarization in MDCK cells. We show that the level of AMPK phosphorylation increases during calcium-induced tight junction assembly and cell polarization and that this increase depends on the kinase activity of LKB1. Expression of a kinase-dead mutant of AMPK inhibits tight junction assembly as indicated by measurement of transepithelial resistance and analysis of ZO-1 localization to the tight junction after calcium switch. Conversely, 5-aminoimidizole-4-carboxamide riboside, an activator of AMPK, promotes transepithelial resistance development and tight junction assembly upon calcium switch. Furthermore, 5-aminoimidizole-4-carboxamide riboside partially protects the tight junctions from disassembly induced by calcium depletion. These results support an important role of AMPK in the regulation of epithelial tight junction assembly and disassembly and suggest an intriguing link between cellular energy status and tight junction function.
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Cites
TSC2 Mediates Cellular Energy Response to Control Cell Growth and Survival
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JUNCTIONAL COMPLEXES IN VARIOUS EPITHELIA
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Self-citationHawley, S. A., Boudeau, J., Reid, J. L., Mustard, K. J., Udd, L., Mäkelä, T. P., Alessi, D. R., & Hardie, D. G. (2003) · Journal of Biology · doi:10.1186/1475-4924-2-28 · Cited by 1,665
LKB1 is the upstream kinase in the AMP-activated protein kinase cascade
Woods, A., Johnstone, S. R., Dickerson, K., Leiper, F. C., Fryer, L. G. D., Neumann, D., Schlattner, U., Wallimann, T., Carlson, M., & Carling, D. (2003) · Current Biology · doi:10.1016/j.cub.2003.10.031 · Cited by 1,650
AMP-activated protein kinase induces a p53-dependent metabolic checkpoint
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LKB1 is a master kinase that activates 13 kinases of the AMPK subfamily, including MARK/PAR‐1
Lizcano, J. M., Göransson, O., Toth, R., Deak, M., Morrice, N. A., Boudeau, J., Hawley, S. A., Udd, L., Mäkelä, T. P., Hardie, D. G., et al. (2004) · The EMBO Journal · doi:10.1038/sj.emboj.7600110 · Cited by 1,381
Cited by
The AMPK signalling pathway coordinates cell growth, autophagy and metabolism
Mihaylova, M. M., & Shaw, R. J. (2011) · Nature Cell Biology · doi:10.1038/ncb2329 · Cited by 2,923
Peng, L., Li, Z.-R., Green, R. S., Holzmanr, I. R., & Lin, J. (2009) · The Journal of Nutrition · doi:10.3945/jn.109.104638 · Cited by 2,130
The LKB1-AMPK pathway: metabolism and growth control in tumour suppression
Shackelford, D. B., & Shaw, R. J. (2009) · Nature Reviews Cancer · doi:10.1038/nrc2676 · Cited by 1,943
AMP-activated protein kinase: an energy sensor that regulates all aspects of cell function
Hardie, D. G. (2011) · Genes & Development · doi:10.1101/gad.17420111 · Cited by 1,638
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Metadata
- Authors
- Zheng, B., & Cantley, L. C.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2007-01-16
- Volume
- 104
- Issue
- 3
- Pages
- 819-822
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2049713190
- Cited by
- 278
- References
- 29
- FWCI
- 11.33
- Type
- journal article
- Language
- en
- Open access
- green
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