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Cited by 477

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Interleukin-22 (IL-22) Activates the JAK/STAT, ERK, JNK, and p38 MAP Kinase Pathways in a Rat Hepatoma Cell Line

Open access
Lejeune, Diane, Dumoutier, Laure, Constantinescu, Stefan, Kruijer, Wiebe, Schuringa, Jan Jacob, Renauld, Jean-Christophe·2002·Journal of Biological Chemistry

Abstract

IL (interleukin)-22 is an IL-10-related cytokine; its main biological activity known thus far is the induction of acute phase reactants in liver and pancreas. IL-22 signals through a receptor that is composed of two chains from the class II cytokine receptor family: IL-22R (also called ZcytoR11/CRF2-9) and IL-10Rbeta (CRF2-4), which is also involved in IL-10 signaling. In this report, we analyzed the signal transduction pathways activated in response to IL-22 in a rat hepatoma cell line, H4IIE. We found that IL-22 induces activation of JAK1 and Tyk2 but not JAK2, as well as phosphorylation of STAT1, STAT3, and STAT5 on tyrosine residues, extending the similarities between IL-22 and IL-10. However our results unraveled some differences between IL-22 and IL-10 signaling. Using antibodies specific for the phosphorylated form of MEK1/2, ERK1/2, p90RSK, JNK, and p38 kinase, we showed that IL-22 activates the three major MAPK pathways. IL-22 also induced serine phosphorylation of STAT3 on Ser(727). This effect, which is not shared with IL-10, was only marginally affected by MEK1/2 inhibitors, indicating that other pathways might be involved. Finally, by overexpressing a STAT3 S727A mutant, we showed that serine phosphorylation is required to achieve maximum transactivation of a STAT responsive promoter upon IL-22 stimulation.

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Metadata

Authors
Lejeune, D., Dumoutier, L., Constantinescu, S., Kruijer, W., Schuringa, J. J., & Renauld, J.-C.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2002-09
Volume
277
Issue
37
Pages
33676-33682
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2082159115
Cited by
477
References
7
FWCI
4.66
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Interleukin-22 (IL-22) Activates the JAK/STAT, ERK, JNK, and p38 MAP Kinase Pathways in a Rat Hepatoma Cell Line. https://app.cochat.ai/papers/10.1074/jbc.m204204200
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Lejeune, D., Dumoutier, L., Constantinescu, S., Kruijer, W., Schuringa, J. J., & Renauld, J.-C. (2002). Interleukin-22 (IL-22) Activates the JAK/STAT, ERK, JNK, and p38 MAP Kinase Pathways in a Rat Hepatoma Cell Line. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m204204200

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