Abstract:
:Nocturnin has been identified as a clock-controlled gene based on its rhythmic expression and night-time peak of transcript level in Xenopus retina. Further studies show that the widespread expression and rhythmicity of nocturnin mRNA level parallel the expression of clock genes. In Xenopus, nocturnin transcription is regulated by cAMP response element-binding protein (CREB) binding the nocturnin element (NE). However, mechanism(s) underlying the regulation of nocturnin transcription in human cells is unknown at present. In this study, we demonstrated that the transcription of human nocturnin gene displayed circadian oscillations in Huh7 cells (a human hepatoma cell line) and was regulated by CLOCK/BMAL1 heterodimer via the E-box of nocturnin promoter. In addition, E-box2 is more efficient than E-box1 in the regulation of CLOCK/BMAL1 on nocturnin transcription in vitro.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Li R,Yue J,Zhang Y,Zhou L,Hao W,Yuan J,Qiang B,Ding JM,Peng X,Cao JMdoi
10.1007/s11010-008-9846-xsubject
Has Abstractpub_date
2008-10-01 00:00:00pages
169-77issue
1-2eissn
0300-8177issn
1573-4919journal_volume
317pub_type
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