Abstract
Long noncoding RNAs (lncRNAs) play a broad range of biological roles, including regulation of expression of genes and chromosomes. Here, we present evidence that lncRNAs are involved in vertebrate circadian biology. Differential night/day expression of 112 lncRNAs (0.3 to >50 kb) occurs in the rat pineal gland, which is the source of melatonin, the hormone of the night. Approximately one-half of these changes reflect nocturnal increases. Studies of eight lncRNAs with 2- to >100-fold daily rhythms indicate that, in most cases, the change results from neural stimulation from the central circadian oscillator in the suprachiasmatic nucleus (doubling time = 0.5-1.3 h). Light exposure at night rapidly reverses (halving time = 9-32 min) levels of some of these lncRNAs. Organ culture studies indicate that expression of these lncRNAs is regulated by norepinephrine acting through cAMP. These findings point to a dynamic role of lncRNAs in the circadian system.
Original language | English |
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Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 109 |
Issue number | 33 |
Pages (from-to) | 13319-13324 |
Number of pages | 6 |
ISSN | 0027-8424 |
DOIs | |
Publication status | Published - 14 Aug 2012 |
Keywords
- Animals
- Bucladesine
- Circadian Rhythm
- Computational Biology
- Gene Expression Regulation
- Nervous System
- Norepinephrine
- Pineal Gland
- RNA, Untranslated
- Rats
- Rats, Sprague-Dawley
- Synapses