Cited by 654T-cell and B-cell ImmunologyProtein Kinase Regulation and GTPase SignalingDevelopmental Biology and Gene Regulation

Defective Thymocyte Maturation in p44 MAP Kinase (Erk 1) Knockout Mice

Pagès, Gilles, Guérin, Sandrine, Grall, Dominique, Bonino, Frédéric, Smith, Austin, Anjuere, Fabienne, Auberger, Patrick, Pouysségur, Jacques·1999·Science

Abstract

The p42 and p44 mitogen-activated protein kinases (MAPKs), also called Erk2 and Erk1, respectively, have been implicated in proliferation as well as in differentiation programs. The specific role of the p44 MAPK isoform in the whole animal was evaluated by generation of p44 MAPK-deficient mice by homologous recombination in embryonic stem cells. The p44 MAPK –/– mice were viable, fertile, and of normal size. Thus, p44 MAPK is apparently dispensable and p42 MAPK (Erk2) may compensate for its loss. However, in p44 MAPK −/− mice, thymocyte maturation beyond the CD4 + CD8 + stage was reduced by half, with a similar diminution in the thymocyte subpopulation expressing high levels of T cell receptor (CD3 high ). In p44 MAPK −/− thymocytes, proliferation in response to activation with a monoclonal antibody to the T cell receptor in the presence of phorbol myristate acetate was severely reduced even though activation of p42 MAPK was more sustained in these cells. The p44 MAPK apparently has a specific role in thymocyte development.

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Crossref · 10.1126/science.286.5443.1374

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Authors
Pagès, G., Guérin, S., Grall, D., Bonino, F., Smith, A., Anjuere, F., Auberger, P., & Pouysségur, J.
Affiliations
  • Institute of Signaling, Developmental Biology and Cancer Research, CNRS UMR 6543, Centre A. Lacassagne, 33 Avenue de Valombrose, 06189 Nice, France.
  • Faculté de Medecine, INSERM U364 and CJF 96.05, Avenue de Valombrose, 06107 Nice, France.
  • Centre National de la Recherche Scientifique (FR)
  • University of Edinburgh (GB)
  • Inserm (FR)
Venue
Science
Published
1999-11-12
Volume
286
Issue
5443
Pages
1374-1377
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1967400782
Cited by
654
References
23
Citations by year
2026: 3 · 2025: 5 · 2024: 3 · 2023: 10 · 2022: 13 · 2021: 14 · 2020: 12 · 2019: 12 · 2018: 16 · 2017: 26 · 2016: 19 · 2015: 29 · 2014: 23 · 2013: 22 · 2012: 48
FWCI
8.78
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
ERK1, ERK2, p42 MAP kinase, T cell development, knockout mice, T cell receptor signaling, thymocyte proliferation, CD4+CD8+ thymocytes, compensatory function
MeSH terms
Animals, Antibodies, Monoclonal, Cell Differentiation, Cell Division, Cells, Cultured, DNA, Enzyme Activation, Isoenzymes, Phosphorylation, Polymorphism, Restriction Fragment Length, Tetradecanoylphorbol Acetate, Thymus Gland, Antigens, CD, T-Lymphocyte Subsets, Receptors, Antigen, T-Cell, alpha-beta, CD3 Complex, Mice, Knockout, Gene Targeting, Mitogen-Activated Protein Kinase 1, Mitogen-Activated Protein Kinases, Mitogen-Activated Protein Kinase 3, Mice

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