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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 Strekalova
  • Stephan 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
Issue number1
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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