Journal
NATURE MEDICINE
Volume 14, Issue 7, Pages 723-730Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nm1784
Keywords
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Funding
- NIA NIH HHS [R21 AG029290-02, R21 AG029290, AG 029290] Funding Source: Medline
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Recent efforts have revealed that numerous protein-coding messenger RNAs have natural antisense transcript partners, most of which seem to be noncoding RNAs. Here we identify a conserved noncoding antisense transcript for beta-secretase-1 (BACE1), a crucial enzyme in Alzheimer's disease pathophysiology. The BACE1-antisense transcript (BACE1-AS) regulates BACE1 mRNA and subsequently BACE1 protein expression in vitro and in vivo. Upon exposure to various cell stressors including amyloid-beta 1-42 (A beta 1-42), expression of BACE1-AS becomes elevated, increasing BACE1 mRNA stability and generating additional A beta 1-42 through a post-transcriptional feed-forward mechanism. BACE1-AS concentrations were elevated in subjects with Alzheimer's disease and in amyloid precursor protein transgenic mice. These data show that BACE1 mRNA expression is under the control of a regulatory noncoding RNA that may drive Alzheimer's disease-associated pathophysiology. In summary, we report that a long noncoding RNA is directly implicated in the increased abundance of A beta 1-42 in Alzheimer's disease.
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