APP intracellular domain acts as a transcriptional regulator of miR-663 suppressing neuronal differentiation

  • R. Shu
  • , W. Wong
  • , Q. H. Ma
  • , Z. Z. Yang
  • , H. Zhu
  • , F. J. Liu
  • , P. Wang
  • , J. Ma
  • , S. Yan
  • , J. M. Polo
  • , C. C.A. Bernard
  • , L. W. Stanton
  • , G. S. Dawe
  • , Z. C. Xiao*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Amyloid precursor protein (APP) is best known for its involvement in the pathogenesis of Alzheimer's disease. We have previously demonstrated that APP intracellular domain (AICD) regulates neurogenesis; however, the mechanisms underlying AICD-mediated regulation of neuronal differentiation are not yet fully characterized. Using genome-wide chromatin immunoprecipitation approaches, we found that AICD is specifically recruited to the regulatory regions of several microRNA genes, and acts as a transcriptional regulator for miR-663, miR-3648 and miR-3687 in human neural stem cells. Functional assays show that AICD negatively modulates neuronal differentiation through miR-663, a primate-specific microRNA. Microarray data further demonstrate that miR-663 suppresses the expression of multiple genes implicated in neurogenesis, including FBXL18 and CDK6. Our results indicate that AICD has a novel role in suppression of neuronal differentiation via transcriptional regulation of miR-663 in human neural stem cells.

Original languageEnglish
Article numbere1651
JournalCell Death and Disease
Volume6
Issue number2
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

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