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Molecular Pharmacology

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Research ArticleArticle

Transcriptional Response to Corticotropin-Releasing Factor in AtT-20 Cells

Pieter J. Peeters, Hinrich W. Göhlmann, Ilse Van den Wyngaert, Sigrid M. Swagemakers, Luc Bijnens, Stefan U. Kass and Thomas Steckler
Molecular Pharmacology November 2004, 66 (5) 1083-1092; DOI: https://doi.org/10.1124/mol.104.000950
Pieter J. Peeters
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Hinrich W. Göhlmann
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Ilse Van den Wyngaert
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Sigrid M. Swagemakers
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Luc Bijnens
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Stefan U. Kass
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Thomas Steckler
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Abstract

Corticotropin-releasing factor (CRF) plays a central role in the regulation of the hypothalamic-pituitary-adrenal axis, mediating endocrine and behavioral responses to various stressors. Two high-affinity receptors for CRF have been described. Although many of the intracellular signaling pathways activated by CRF have been studied extensively, our knowledge of transcriptional responses downstream of the CRF receptor 1 (CRFR1) is still limited. To elucidate gene networks regulated by CRF and CRFR1, we applied microarray technology to explore transcriptional response to CRF stimulation. Therefore, mouse pituitary-derived AtT-20 cells were exposed continuously to CRF either in the presence or absence of the specific CRFR1 antagonist R121919. Transcriptional responses to different treatments were studied in a time course ranging from 0.5 to 24 h. Microarray data were analyzed using classic microarray data analysis tools such as correspondence factor analysis, cluster analysis, and fold-change filtering. Furthermore, spectral map analysis was applied, a recently introduced unsupervised multivariate analysis method. A broad and transient transcriptional response to CRF was identified that could be blocked by the antagonist. This way, several known CRF-induced target genes and novel CRF responsive genes were identified. These include transcription factors such as cAMP-responsive element modulator (7× increased), secreted peptides such as cholecystokinin (1.5×), and proteins involved in modulating intracellular signaling, such as regulator of G-protein signaling 2 (11×). Up-regulation of many of these genes can be explained as negative feedback, attenuating CRF-activated pathways. In addition, spectral map analysis proved to be a promising new tool for microarray data analysis.

  • Received April 1, 2004.
  • Accepted July 22, 2004.
  • The American Society for Pharmacology and Experimental Therapeutics
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Molecular Pharmacology: 66 (5)
Molecular Pharmacology
Vol. 66, Issue 5
1 Nov 2004
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Research ArticleArticle

Transcriptional Response to Corticotropin-Releasing Factor in AtT-20 Cells

Pieter J. Peeters, Hinrich W. Göhlmann, Ilse Van den Wyngaert, Sigrid M. Swagemakers, Luc Bijnens, Stefan U. Kass and Thomas Steckler
Molecular Pharmacology November 1, 2004, 66 (5) 1083-1092; DOI: https://doi.org/10.1124/mol.104.000950

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Research ArticleArticle

Transcriptional Response to Corticotropin-Releasing Factor in AtT-20 Cells

Pieter J. Peeters, Hinrich W. Göhlmann, Ilse Van den Wyngaert, Sigrid M. Swagemakers, Luc Bijnens, Stefan U. Kass and Thomas Steckler
Molecular Pharmacology November 1, 2004, 66 (5) 1083-1092; DOI: https://doi.org/10.1124/mol.104.000950
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