Interleukin 1 Induces β-Endorphin Secretion via Fos and Jun in AtT-20 Pituitary Cells

Previous work had shown that interleukin 1 (IL-1), after a long period of treatment, stimulates β-endorphin release and potentiates the effects of secretagogues in AtT-20 cells, a mouse anterior pituitary cell line. Treatment of AtT-20 cells with IL-1 induced a transient and early stimulation of mRN...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 1990-10, Vol.87 (20), p.7871-7874
Hauptverfasser: Fagarasan, Mirela O., Aiello, Francesca, Muegge, Katherin, Durum, Scott, Axelrod, Julius
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container_end_page 7874
container_issue 20
container_start_page 7871
container_title Proceedings of the National Academy of Sciences - PNAS
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creator Fagarasan, Mirela O.
Aiello, Francesca
Muegge, Katherin
Durum, Scott
Axelrod, Julius
description Previous work had shown that interleukin 1 (IL-1), after a long period of treatment, stimulates β-endorphin release and potentiates the effects of secretagogues in AtT-20 cells, a mouse anterior pituitary cell line. Treatment of AtT-20 cells with IL-1 induced a transient and early stimulation of mRNA expression by both immediate-early protooncogenes Fos and Jun (mouse c-fos and c-jun). The effect appeared within 30 min, and returned to basal levels after 2 hr. Desensitization of protein kinase C by phorbol ester pretreatment had no effect on the ability of IL-1 to induce Fos and Jun mRNA expression. Somatostatin, an inhibitor of cAMP and β-endorphin secretion, did not reduce the IL-1 effect on Fos and Jun mRNA expression. Addition to AtT-20 cells of antisense oligonucleotides to Fos and Jun abolished the secretion induced by IL-1. These results indicate that immediate-early signals Fos and Jun are involved in IL-1-induced β-endorphin secretion in AtT-20 cells.
doi_str_mv 10.1073/pnas.87.20.7871
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Psychology</topic><topic>Genes</topic><topic>Interleukin-1 - pharmacology</topic><topic>Interleukins</topic><topic>Messenger RNA</topic><topic>Mice</topic><topic>Molecular Sequence Data</topic><topic>Oligonucleotide Probes</topic><topic>Oligonucleotides</topic><topic>Phorbol esters</topic><topic>Pituitary Gland, Anterior</topic><topic>Protein hormones. Growth factors. 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Treatment of AtT-20 cells with IL-1 induced a transient and early stimulation of mRNA expression by both immediate-early protooncogenes Fos and Jun (mouse c-fos and c-jun). The effect appeared within 30 min, and returned to basal levels after 2 hr. Desensitization of protein kinase C by phorbol ester pretreatment had no effect on the ability of IL-1 to induce Fos and Jun mRNA expression. Somatostatin, an inhibitor of cAMP and β-endorphin secretion, did not reduce the IL-1 effect on Fos and Jun mRNA expression. Addition to AtT-20 cells of antisense oligonucleotides to Fos and Jun abolished the secretion induced by IL-1. These results indicate that immediate-early signals Fos and Jun are involved in IL-1-induced β-endorphin secretion in AtT-20 cells.</abstract><cop>Washington, DC</cop><pub>National Academy of Sciences of the United States of America</pub><pmid>1978316</pmid><doi>10.1073/pnas.87.20.7871</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record>
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subjects Analytical, structural and metabolic biochemistry
Animals
Base Sequence
beta-Endorphin - metabolism
Biological and medical sciences
Cell Line
Cell lines
Cells
DNA-Binding Proteins - genetics
Fundamental and applied biological sciences. Psychology
Genes
Interleukin-1 - pharmacology
Interleukins
Messenger RNA
Mice
Molecular Sequence Data
Oligonucleotide Probes
Oligonucleotides
Phorbol esters
Pituitary Gland, Anterior
Protein hormones. Growth factors. Cytokines
Protein Kinase C - metabolism
Protein-Tyrosine Kinases - genetics
Proteins
Proto-Oncogene Proteins - genetics
Proto-Oncogene Proteins c-fos
Proto-Oncogene Proteins c-jun
Proto-Oncogenes - drug effects
RNA
Secretion
Somatostatin - pharmacology
T lymphocytes
Transcription Factors - genetics
title Interleukin 1 Induces β-Endorphin Secretion via Fos and Jun in AtT-20 Pituitary Cells
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