Granulocyte macrophage colony-stimulating factor and interleukin-5 activate STAT5 and induce CIS1 mRNA in human peripheral blood eosinophils

S. Bhattacharya, B. A. Stout, M. E. Bates, P. J. Bertics, J. S. Malter

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In these studies, we examined signaling through the transcription factor STAT5 in human peripheral blood eosinophils after treatment with granulocyte macrophage colony-stimulating factor (GM-CSF) or interleukin (IL)-5. In response to either cytokine, STAT5 was rapidly tyrosine phosphorylated and acquired interferon gamma activation site (GAS) DNA binding activity. Tyrosine-phosphorylated STAT5 was associated with both cytosolic and nuclear cell fractions. Consistent with activation, the transcription of a STAT5-dependent gene, cytokine inducible, SH2-containing protein (CIS1), was enhanced after cytokine stimulation. This is the first report of IL-5 regulation of CIS1 gene expression in any cell type. Given its role in cytokine signaling, CIS1 upregulation may serve to attenuate IL-5 and GM-CSF modulation of eosinophil function. These data suggest that active nuclear STAT5 participates in the regulation of IL-5 and GM-CSF-inducible genes in stimulated human peripheral blood eosinophils.

Original languageEnglish (US)
Pages (from-to)312-316
Number of pages5
JournalAmerican Journal of Respiratory Cell and Molecular Biology
Volume24
Issue number3
StatePublished - 2001

Fingerprint

Interleukin-5
Granulocyte-Macrophage Colony-Stimulating Factor
Eosinophils
Blood
Messenger RNA
Cytokines
Tyrosine
Genes
Chemical activation
STAT5 Transcription Factor
Gene Expression Regulation
Transcription
Gene expression
Transcriptional Activation
Interferon-gamma
Up-Regulation
Binding Sites
Modulation
DNA

ASJC Scopus subject areas

  • Cell Biology
  • Pulmonary and Respiratory Medicine
  • Molecular Biology

Cite this

Granulocyte macrophage colony-stimulating factor and interleukin-5 activate STAT5 and induce CIS1 mRNA in human peripheral blood eosinophils. / Bhattacharya, S.; Stout, B. A.; Bates, M. E.; Bertics, P. J.; Malter, J. S.

In: American Journal of Respiratory Cell and Molecular Biology, Vol. 24, No. 3, 2001, p. 312-316.

Research output: Contribution to journalArticle

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AU - Stout, B. A.

AU - Bates, M. E.

AU - Bertics, P. J.

AU - Malter, J. S.

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AB - In these studies, we examined signaling through the transcription factor STAT5 in human peripheral blood eosinophils after treatment with granulocyte macrophage colony-stimulating factor (GM-CSF) or interleukin (IL)-5. In response to either cytokine, STAT5 was rapidly tyrosine phosphorylated and acquired interferon gamma activation site (GAS) DNA binding activity. Tyrosine-phosphorylated STAT5 was associated with both cytosolic and nuclear cell fractions. Consistent with activation, the transcription of a STAT5-dependent gene, cytokine inducible, SH2-containing protein (CIS1), was enhanced after cytokine stimulation. This is the first report of IL-5 regulation of CIS1 gene expression in any cell type. Given its role in cytokine signaling, CIS1 upregulation may serve to attenuate IL-5 and GM-CSF modulation of eosinophil function. These data suggest that active nuclear STAT5 participates in the regulation of IL-5 and GM-CSF-inducible genes in stimulated human peripheral blood eosinophils.

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