The Akt/GSK-3β axis as a new signaling pathway of the histamine H 3 receptor

Gerold Bongers, Tina Sallmen, Maria Beatrice Passani, Chiara Mariottini, Dominique Wendelin, Adrian Lozada, André Van Marle, Marjon Navis, Patrizio Blandina, Remko A. Bakker, Pertti Panula, Rob Leurs

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Drugs targeting the histamine H3 receptor (H3R) are suggested to be beneficial for the treatment of neurodegenerative diseases, such as Alzheimer's and Parkinson's disease. The H3R activates G i/o-proteins to inhibit adenylyl cyclase activity and modulates phospholipase A2 and MAPK activity. Herein we show that, in transfected SK-N-MC cells, the H3R modulates the activity of the Akt/Glycogen synthase kinase 3β (GSK-3β) axis both in a constitutive and agonist-dependent fashion. H3R stimulation with the H 3R agonist immepip induces the phosphorylation of both Ser473 and Thr308 on Akt, a serine/threonine kinase that is important for neuronal development and function. The H3R-mediated activation of Akt can be inhibited by the H3R inverse agonist thioperamide, and by Wortmannin, LY294002 and PTX, suggesting the observed Akt activation occurs via a G i/o-mediated activation of phosphoinositide-3-kinase. H3R activation also results in the phosphorylation of Ser9 on GSK-3β, which acts downstream of Akt and has a prominent role in brain function. In addition, we show the H3R-mediated phosphorylation of Akt at Ser473 to occur in primary rat cortical neurons and in rat brain slices. The discovery of this signaling property of the H3R adds new understanding to the roles of histamine and the H3R in brain function and pathology.

Original languageEnglish
Pages (from-to)248-258
Number of pages11
JournalJournal of Neurochemistry
Volume103
Issue number1
DOIs
StatePublished - Oct 2007
Externally publishedYes

Keywords

  • Akt
  • G protein-coupled receptor
  • Glycogen synthase kinase 3β
  • Histamine H receptor
  • Protein kinase B
  • Signaling

Fingerprint

Dive into the research topics of 'The Akt/GSK-3β axis as a new signaling pathway of the histamine H 3 receptor'. Together they form a unique fingerprint.

Cite this