Article (Scientific journals)
Interleukin-1 beta and lipopolysaccharide decrease soluble guanylyl cyclase in brain cells: NO-independent destabilization of protein and NO-dependent decrease of mRNA.
Pedraza, Carlos E; Baltrons, María Antonia; HENEKA, Michael et al.
2003In Journal of Neuroimmunology, 144 (1-2), p. 80 - 90
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Keywords :
Interleukin-1; Lipopolysaccharides; Protein Subunits; RNA, Messenger; Nitric Oxide; Mitogen-Activated Protein Kinases; Guanylate Cyclase; Cyclic GMP; Animals; Astrocytes/enzymology; Astrocytes/immunology; Astrocytes/metabolism; Brain/cytology; Brain/enzymology; Brain/immunology; Cells, Cultured; Cerebellum/enzymology; Cerebellum/immunology; Cyclic GMP/antagonists & inhibitors; Cyclic GMP/metabolism; Down-Regulation/genetics; Down-Regulation/immunology; Enzyme Stability/genetics; Enzyme Stability/immunology; Guanylate Cyclase/antagonists & inhibitors; Guanylate Cyclase/genetics; Guanylate Cyclase/metabolism; Half-Life; Interleukin-1/administration & dosage; Interleukin-1/pharmacology; Lipopolysaccharides/administration & dosage; Lipopolysaccharides/pharmacology; Mitogen-Activated Protein Kinases/physiology; Nitric Oxide/physiology; Protein Biosynthesis/immunology; Protein Subunits/antagonists & inhibitors; Protein Subunits/metabolism; RNA, Messenger/antagonists & inhibitors; RNA, Messenger/metabolism; Rats; Rats, Sprague-Dawley; Solubility; Transcription, Genetic/immunology; Astroglia; CGMP; Interleukin-1β; Lipopolysaccharide; Soluble guanylyl cyclase; Immunology and Allergy; Immunology; Neurology; Neurology (clinical); interleukin-1 beta
Abstract :
[en] We previously showed that soluble guanylyl cyclase (sGC) is down-regulated in astroglial cells after exposure to LPS. Here, we show that this effect is not mediated by released IL-1beta but that this cytokine is also able to decrease NO-dependent cGMP accumulation in a time- and concentration-dependent manner. The effect of IL-1beta is receptor-mediated, mimicked by tumor necrosis factor-alpha and involves a decrease in sGC activity and protein. IL-1beta and LPS decrease the half-life of the sGC beta1 subunit by a NO-independent but transcription- and translation-dependent mechanism. Additionally, both agents induce a NO-dependent decrease of sGC subunit mRNA. Decreased sGC subunit protein and mRNA levels are also observed in adult rat brain after focal injection of IL-1beta or LPS.
Disciplines :
Neurology
Author, co-author :
Pedraza, Carlos E;  Institute of Biotechnology and Biomedicine V. Villar Palasi, and Department of Biochemistry and Molecular Biology, Autonomous University of Barcelona, 08193 Bellaterra, Spain
Baltrons, María Antonia;  Inst. Biotech./Biomed. 'V. V.', Dept. of Biochem./Molecular Biology, Autonomous University of Barcelona, 08193 Bellaterra, Spain
HENEKA, Michael  ;  Department of Neurology, University of Bonn, 53105 Bonn, Germany
García, Agustina;  Inst. Biotech./Biomed. 'V. V.', Dept. of Biochem./Molecular Biology, Autonomous University of Barcelona, 08193 Bellaterra, Spain ; Inst. Biotecnologia/Biomedicina 'V.', Univ. Autónoma de Barcelona, 08193 Bellaterra, Spain
External co-authors :
yes
Language :
English
Title :
Interleukin-1 beta and lipopolysaccharide decrease soluble guanylyl cyclase in brain cells: NO-independent destabilization of protein and NO-dependent decrease of mRNA.
Publication date :
November 2003
Journal title :
Journal of Neuroimmunology
ISSN :
0165-5728
eISSN :
1872-8421
Publisher :
Elsevier, Netherlands
Volume :
144
Issue :
1-2
Pages :
80 - 90
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
We thank F. Garcı́a for assistance in preparation of cultures and A. Segura for technical assistance. We also thank Dr. D. Feinstein (University of Illinois, USA) for advice in the RT-PCR experiments. This work was supported by SAF2001-2540, SGR2001-212, Fundació La Marató TV3 (1008/97) grants to A.G. and a DFG (SFB 400, A8) grant to M.T.H. C.E. Pedraza was the recipient of a predoctoral fellowship from Ministerio de Educación y Cultura (Spain).
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