Attenuated palmitoylation of serotonin receptor 5-HT1A affects receptor function and contributes to depression-like behaviors

Nataliya Gorinski, Monika Bijata, Sonal Prasad, Alexander Wirth, Dalia Abdel Galil, Andre Zeug, Darla Bazovkina, Elena Kondaurova, Elizabeth Kulikova, Tatiana Ilchibaeva, Monika Zareba-Koziol, Francesco Papaleo, Diego Scheggia, Gaga Kochlamazashvili, Alexander Dityatev, Ian Smyth, Adam Krzystyniak, Jakub Wlodarczyk, Diethelm W. Richter, Tatyana StrekalovaStephan Sigrist, Claudia Bang, Lisa Hobuss, Jan Fiedler, Thomas Thum, Vladimir S. Naumenko*, Ghanshyam Pandey*, Evgeni Ponimaskin*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The serotonergic system and in particular serotonin 1A receptor (5-HT1AR) are implicated in major depressive disorder (MDD). Here we demonstrated that 5-HT1AR is palmitoylated in human and rodent brains, and identified ZDHHC21 as a major palmitoyl acyltransferase, whose depletion reduced palmitoylation and consequently signaling functions of 5-HT1AR. Two rodent models for depression-like behavior show reduced brain ZDHHC21 expression and attenuated 5-HT1AR palmitoylation. Moreover, selective knock-down of ZDHHC21 in the murine forebrain induced depression-like behavior. We also identified the microRNA miR-30e as a negative regulator of Zdhhc21 expression. Through analysis of the post-mortem brain samples in individuals with MDD that died by suicide we find that miR-30e expression is increased, while ZDHHC21 expression, as well as palmitoylation of 5-HT1AR, are reduced within the prefrontal cortex. Our study suggests that downregulation of 5-HT1AR palmitoylation is a mechanism involved in depression, making the restoration of 5-HT1AR palmitoylation a promising clinical strategy for the treatment of MDD.

Original languageEnglish
Article number3924
Number of pages14
JournalNature Communications
Volume10
DOIs
Publication statusPublished - 2 Sept 2019

Keywords

  • PREFRONTAL CORTEX
  • MAJOR DEPRESSION
  • 5-HYDROXYTRYPTAMINE(1A) RECEPTOR
  • PROTEIN PALMITOYLATION
  • CODING REGION
  • MICE LACKING
  • 1A BINDING
  • STRESS
  • EXPRESSION
  • MICRORNAS

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