The sGC stimulator BAY-747 and activator runcaciguat can enhance memory in vivo via differential hippocampal plasticity mechanisms

Ellis Nelissen*, Nina Possemis, Nick P Van Goethem, Melissa Schepers, Danielle A J Mulder-Jongen, Lisa Dietz, Wiebke Janssen, Michael Gerisch, Jörg Hüser, Peter Sandner, Tim Vanmierlo, Jos Prickaerts*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Soluble guanylate cyclase (sGC) requires a heme-group bound in order to produce cGMP, a second messenger involved in memory formation, while heme-free sGC is inactive. Two compound classes can increase sGC activity: sGC stimulators acting on heme-bound sGC, and sGC activators acting on heme-free sGC. In this rodent study, we investigated the potential of the novel brain-penetrant sGC stimulator BAY-747 and sGC activator runcaciguat to enhance long-term memory and attenuate short-term memory deficits induced by the NOS-inhibitor L-NAME. Furthermore, hippocampal plasticity mechanisms were investigated. In vivo, oral administration of BAY-747 and runcaciguat to male Wistar rats enhanced memory acquisition in the object location task (OLT), while only BAY-747 reversed L-NAME induced memory impairments in the OLT. Ex vivo, both BAY-747 and runcaciguat enhanced hippocampal GluA1-containing AMPA receptor (AMPAR) trafficking in a chemical LTP model for memory acquisition using acute mouse hippocampal slices. In vivo only runcaciguat acted on the glutamatergic AMPAR system in hippocampal memory acquisition processes, while for BAY-747 the effects on the neurotrophic system were more pronounced as measured in male mice using western blot. Altogether this study shows that sGC stimulators and activators have potential as cognition enhancers, while the underlying plasticity mechanisms may determine disease-specific effectiveness.

Original languageEnglish
Article number3589
Number of pages15
JournalScientific Reports
Volume12
Issue number1
DOIs
Publication statusPublished - 4 Mar 2022

Keywords

  • AMPA RECEPTORS
  • BDNF
  • CHRONIC INHIBITION
  • EXPRESSION
  • FULL-LENGTH
  • L-ARGININE
  • NITRIC-OXIDE SYNTHESIS
  • RATS
  • SOLUBLE GUANYLYL CYCLASE
  • TRUNCATED TRKB RECEPTORS

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