A transcription factor response element for gene expression during circadian night

Mammalian circadian clocks consist of complex integrated feedback loops that cannot be elucidated without comprehensive measurement of system dynamics and determination of network structures. To dissect such a complicated system, we took a systems-biological approach based on genomic, molecular and...

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Bibliographic Details
Published in:Nature (London) 2002-08, Vol.418 (6897), p.534-539
Main Authors: Ueda, Hiroki R, Shigeyoshi, Yasufumi, Chen, Wenbin, Adachi, Akihito, Wakamatsu, Hisanori, Hayashi, Satoko, Takasugi, Tomohiro, Nagano, Mamoru, Nakahama, Ken-ichi, Suzuki, Yutaka, Sugano, Sumio, Iino, Masamitsu, Hashimoto, Seiichi
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Bioluminescence
Cell Line
Circadian rhythm
Circadian Rhythm - genetics
Circadian rhythms
Computational Biology
Darkness
Fibroblasts
Fundamental and applied biological sciences. Psychology
Gene expression
Gene Expression Profiling
Gene Expression Regulation
Genes
Genomics
Humans
Light
Liver - metabolism
Luminescent Measurements
Male
Mice
Mice, Inbred BALB C
Molecular and cellular biology
Molecular genetics
Promoter Regions, Genetic - genetics
Rats
Reproducibility of Results
Response Elements - genetics
RNA, Messenger - genetics
RNA, Messenger - metabolism
Suprachiasmatic Nucleus - metabolism
Transcription Factors - metabolism
Transcription Initiation Site
Transfection
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Summary:Mammalian circadian clocks consist of complex integrated feedback loops that cannot be elucidated without comprehensive measurement of system dynamics and determination of network structures. To dissect such a complicated system, we took a systems-biological approach based on genomic, molecular and cell biological techniques. We profiled suprachiasmatic nuclei and liver genome-wide expression patterns under light/dark cycles and constant darkness. We determined transcription start sites of human orthologues for newly identified cycling genes and then performed bioinformatical searches for relationships between time-of-day specific expression and transcription factor response elements around transcription start sites. Here we demonstrate the role of the Rev-ErbA/ROR response element in gene expression during circadian night, which is in phase with Bmal1 and in antiphase to Per2 oscillations. This role was verified using an in vitro validation system, in which cultured fibroblasts transiently transfected with clock-controlled reporter vectors exhibited robust circadian bioluminescence.
ISSN:0028-0836
1476-4687
DOI:10.1038/nature00906