MiR-107 is reduced in Alzheimer's disease brain neocortex: validation study

J Alzheimers Dis. 2010;21(1):75-9. doi: 10.3233/JAD-2010-091603.

Abstract

MiR-107 is a microRNA (miRNA) that we reported previously to have decreased expression in the temporal cortical gray matter early in the progression of Alzheimer's disease (AD). Here we study a new group of well-characterized human temporal cortex samples (N=19). MiR-107 expression was assessed, normalized to miR-124 and let-7a. Correlation was observed between decreased miR-107 expression and increased neuritic plaque counts (P< 0.05) and neurofibrillary tangle counts (P< 0.02) in adjacent brain tissue. Adjusted miR-107 and BACE1 mRNA levels tended to correlate negatively (trend with regression P< 0.07). In sum, miR-107 expression tends to be lower relative to other miRNAs as AD progresses.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Aged, 80 and over
  • Alzheimer Disease / pathology*
  • Disease Progression
  • Down-Regulation / physiology*
  • Female
  • Humans
  • Male
  • MicroRNAs / genetics*
  • MicroRNAs / metabolism*
  • Neocortex / metabolism*
  • Validation Studies as Topic

Substances

  • MIRN107 microRNA, human
  • MicroRNAs