Cited by 298Protein Kinase Regulation and GTPase SignalingMetabolism, Diabetes, and CancerProtein Tyrosine Phosphatases

Modulation of Insulin Receptor Substrate-1 Tyrosine Phosphorylation and Function by Mitogen-activated Protein Kinase

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De Fea, Kathryn, Roth, Richard A.·1997·Journal of Biological Chemistry

Abstract

Increased serine phosphorylation of insulin receptor substrate-1 (IRS-1) has been observed in several systems to correlate with a decreased ability of the insulin receptor to tyrosine-phosphorylate this endogenous substrate and to inhibit its subsequent association with phosphatidylinositol 3-kinase. In the present studies we have examined the potential role of the mitogen-activated protein (MAP) kinase in the increased serine phosphorylation of IRS-1 observed in human embryonic kidney cells treated with an activator of protein kinase C, phorbol 12-myristate 13-acetate. First, recombinantly produced kinase was shown to phosphorylate intact IRS-1 in a way that decreased the ability of isolated insulin receptor to phosphorylate the tyrosines recognized by the SH2 domains of the phosphatidylinositol 3-kinase. Second, an inhibitor of MAP kinase activation, PD98059, blocked the phorbol 12-myristate 13-acetate-induced inhibition of the insulin-stimulated increase in IRS-1 associated phosphatidylinositol 3-kinase. Third, activation of MAP kinase in intact cells via a regulatable upstream kinase, a RAF:estrogen receptor construct, could also inhibit the insulin-stimulated increase in IRS-1-associated phosphatidylinositol 3-kinase. Fourth, an in gel kinase assay showed that MAP kinase was the primary renaturable kinase in cell extracts capable of phosphorylating an IRS-1 fusion protein. Finally, IRS-1 was found to associate in coprecipitation studies with endogenous MAP kinase. These studies implicate MAP kinase as one of the kinases capable of phosphorylating and regulating IRS-1 tyrosine phosphorylation.

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  • Activation of these protein kinases phosphorylates IRS-1 at serine residue(s), which further interrupts tyrosine phosphorylation on IRS-1 and suppresses downstream insulin signaling.

    “Other studies demonstrated that activation of these protein kinases phosphorylates IRS-1 at its serine residue(s), which further interrupts tyrosine phosphorylation on IRS-1 and suppresses downstream insulin signaling (12).”

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Research works printed but not linked: 3

  1. Ruderman, N. B., Kapeller, R., White, M. F., and Cantley, L. C. (1990) Proc. Natl. Acad. Sci. U. S. A. 87, 1411-1415
  2. Pear, W. S., Nolan, G. P., Scott, M. L., and Baltimore, D. (1993) Proc. Natl. Acad. Sci. U. S. A. 90, 8392-8396
  3. Hsiao, K. M., Chou, S. Y., Shih, S. J., and Ferrell, J. E. Jr. (1994) Proc. Natl. Acad. Sci. U. S. A. 91, 5480 -5484

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Authors
De Fea, K., & Roth, R. A.
Affiliations
Stanford Medicine (US)
Corresponding author
Roth, Richard A.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1997-12
Volume
272
Issue
50
Pages
31400-31406
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2147825853
Cited by
298
References
36
Citations by year
2025: 2 · 2023: 3 · 2022: 4 · 2021: 7 · 2020: 4 · 2019: 5 · 2018: 2 · 2017: 4 · 2016: 2 · 2015: 9 · 2014: 10 · 2013: 4 · 2012: 9
FWCI
4.98
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1f32dk009310-01, DK 34926)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK34926, DK09310)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
IRS-1, serine phosphorylation, tyrosine phosphorylation, mitogen-activated protein kinase, phosphatidylinositol 3-kinase, insulin receptor, phorbol myristate acetate, protein kinase C, PD98059, SH2 domain, insulin signaling
MeSH terms
Animals, Enzyme Activation, Cricetinae, Humans, Kidney, Phosphoproteins, Phosphorylation, Protein-Tyrosine Kinases, Recombinant Proteins, Serine, Tetradecanoylphorbol Acetate, Tyrosine, CHO Cells, Protein Serine-Threonine Kinases, Calcium-Calmodulin-Dependent Protein Kinases, Phosphatidylinositol 3-Kinases, Mitogen-Activated Protein Kinase 1, Mitogen-Activated Protein Kinases, Mitogen-Activated Protein Kinase Kinases, Mitogen-Activated Protein Kinase 3, MAP Kinase Kinase 1, Insulin Receptor Substrate Proteins

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