The cytosolic domain of APP induces the relocalization of dynamin 3 in hippocampal neurons

X. Meckler, E. Bertandeau, M. A. McNiven, B. Allinquant, A. Hémar

Research output: Contribution to journalArticle

Abstract

Amyloid precursor protein (APP) has been the subject of intense research to uncover its implication in Alzheimer's disease. Its physiological function is, however, still poorly understood. Herein, we investigated its possible influence on the development of cultured hippocampal neurons. A peptide corresponding to the APP intracellular domain linked to a cell-penetrating peptide was used to alter the interactions of APP with its cytosolic partners. This treatment promoted the concentration of the cytosolic GTPase dynamin 3 (Dyn3) in neurite segments when most untreated cells displayed a homogenous punctate distribution of Dyn3. The Dyn3-labelled segments were excluded from those revealed by APP staining after aldehyde fixation. Interestingly, after aldehyde fixation MAP2 also labelled segments excluded from APP-stained segments. Thus APP is also a marker for the spacing pattern of neurites demonstrated by Taylor & Fallon (2006) J. Neurosci., 26, 1154-4463.

Original languageEnglish (US)
Pages (from-to)2439-2443
Number of pages5
JournalEuropean Journal of Neuroscience
Volume24
Issue number9
DOIs
StatePublished - Nov 1 2006

Keywords

  • Alzheimer's disease
  • Cultured hippocampal neurons
  • Penetratin
  • Rat

ASJC Scopus subject areas

  • Neuroscience(all)

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