Cited by 250Protein Tyrosine PhosphatasesCytokine Signaling Pathways and InteractionsSignaling Pathways in Disease

The nuclear isoform of protein-tyrosine phosphatase TC-PTP regulates interleukin-6-mediated signaling pathway through STAT3 dephosphorylation

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Yamamoto, Tetsuya, Sekine, Yuichi, Kashima, Keiichi, Kubota, Atsuko, Sato, Noriko, Aoki, Naohito, Matsuda, Tadashi·2002·Biochemical and Biophysical Research Communications

Abstract

In the previous study, we demonstrated that the nuclear isoform of T-cell protein-tyrosine phosphatase (TC-PTP) dephosphorylated and deactivated signal transducer and activator of transcription 5a (STAT5a) and STAT5b, thereby negatively regulating prolactin (PRL)-mediated signaling pathway. In this study, we examined the involvement of the nuclear isoform of TC-PTP in interleukin-6 (IL-6)-mediated signaling pathway. IL-6 is a multifunctional cytokine that plays important roles in the immune system, hematopoiesis, and acute phase reactions, and has also implicated in IL-6-related diseases. Here, we demonstrate that IL-6-induced tyrosine-phosphorylation and activation of STAT3 were suppressed by overexpression of the nuclear isoform of TC-PTP in 293T cells. Tyrosine-phosphorylated STAT3 directly interacted with a substrate-trapping mutant of TC-PTP. Furthermore, retrovirus-mediated overexpression of the nuclear isoform of TC-PTP suppressed the IL-6-induced growth arrest of myeloid leukemia M1 cells. Endogenous TC-PTP complexed with STAT3 in the nucleus of M1 cells. These results strongly suggest that the nuclear isoform of TC-PTP may serve as a negative regulator of IL-6-mediated signaling pathway.

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  1. T. Matsuda, T. Hirano, Interleukin 6 in Cytokine Reference (Oppenheim, J., J., and Feldmann, M., eds), (2000) pp537-563, Academic Press, London
  2. D. E. Cool, N. K. Tonks, H. Charbonneau, K. A. Walsh, E. . Fischer, E. G. Krebs, cDNA isolated from a human T-cell library encodes a member of the protein-tyrosine-phosphatase family, Proc. Natl. Acad. Sci. USA 86 (1989) 5257-5261.
  3. D. E. Cool, , N. K. Tonks, H. Charbonneau, E. H. Fischer, E. G. Krebs, Expression of a human T-cell protein-tyrosine-phosphatase in baby hamster kidney cells, Proc. Natl. Acad. Sci. USA 87 (1990) 7280-7284.
  4. B. Mosinger. Jr., U. Tillmann, H. Westphal, M. L. Tremblay, Cloning and characterization of a mouse cDNA encoding a cytoplasmic protein-tyrosine-phosphatase, Proc. Natl. Acad. Sci. USA 89 (1992) 499-503.

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Authors
Yamamoto, T., Sekine, Y., Kashima, K., Kubota, A., Sato, N., Aoki, N., & Matsuda, T.
Affiliations
  • Hokkaido University (JP)
  • Nagoya University (JP)
Corresponding author
Matsuda, Tadashi
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2002-10
Volume
297
Issue
4
Pages
811-817
ISSN
0006-291X (ISSN-L)
OpenAlex
W2167070735
Cited by
250
References
4
Citations by year
2026: 6 · 2025: 5 · 2024: 5 · 2023: 9 · 2022: 6 · 2021: 13 · 2020: 12 · 2019: 12 · 2018: 9 · 2017: 11 · 2016: 13 · 2015: 9 · 2014: 11 · 2013: 15 · 2012: 29
FWCI
2.49
Type
journal article
Language
en
Open access
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion)
  • Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Signaling Pathways in Disease
Keywords
TCPTP, IL-6 signaling, STAT3 dephosphorylation, STAT3 tyrosine phosphorylation, negative regulation of cytokine signaling
MeSH terms
Acute-Phase Proteins, Animals, Cell Division, Cell Line, Cell Nucleus, DNA-Binding Proteins, Humans, Isoenzymes, Kinetics, Luciferases, Phosphorylation, Recombinant Proteins, Substrate Specificity, Transfection, Tumor Cells, Cultured, Signal Transduction, Trans-Activators, Interleukin-6, Polymerase Chain Reaction, Protein Tyrosine Phosphatases, Genes, Reporter, STAT3 Transcription Factor, Mice, Protein Tyrosine Phosphatase, Non-Receptor Type 2

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