Involvement of Gadd153 in the pathogenic action of presenilin-1 mutations

Ollivier Milhavet, Jennifer L. Martindale, Simonetta Camandola, Sic L. Chan, Devin S. Gary, Aiwu Cheng, Nikki J. Holbrook, Mark P. Mattson

Research output: Contribution to journalArticlepeer-review

Abstract

Mutations in the presenilin-1 (PS1) gene cause early onset familial Alzheimer's disease (FAD) by a mechanism believed to involve perturbed endoplasmic reticulum (ER) function and altered proteolytic processing of the amyloid precursor protein. We investigated the molecular mechanisms underlying cell death and ER dysfunction in cultured cells and knock-in mice expressing FAD PS1 mutations. We report that PS1 mutations cause a marked increase in basal protein levels of the pro-apoptotic transcription factor Gadd153. PS1 mutations increase Gadd153 protein translation without affecting mRNA levels, while decreasing levels of the anti-apoptotic protein Bcl-2. Moreover, an exaggerated Gadd153 response to stress induced by ER stress agents was observed in PS1 mutant cells. Cell death in response to ER stress is enhanced by PS1 mutations, and this endangering effect is attenuated by antisense-mediated suppression of Gadd153 production. An abnormality in the translational regulation of Gadd153 may sensitize cells to the detrimental effects of ER stress and contribute to the pathogenic actions of PS1 mutations in FAD.

Original languageEnglish (US)
Pages (from-to)673-681
Number of pages9
JournalJournal of Neurochemistry
Volume83
Issue number3
DOIs
StatePublished - Nov 2002

Keywords

  • Alzheimer's disease
  • Apoptosis
  • ER stress
  • ElF2α
  • Gadd153
  • Presenilin-1

ASJC Scopus subject areas

  • Biochemistry
  • Cellular and Molecular Neuroscience

Fingerprint

Dive into the research topics of 'Involvement of Gadd153 in the pathogenic action of presenilin-1 mutations'. Together they form a unique fingerprint.

Cite this