Abstract:
:A circadian clock regulates a number of diverse physiological functions in the vertebrate eye. In this study, we show that mRNA for the red-sensitive cone pigment, iodopsin, fluctuates with a circadian rhythm in chicken retina. Transcript levels increase in the late afternoon just prior to the time of cone disc shedding. Furthermore, iodopsin mRNA levels are regulated similarly by a circadian oscillator in primary cultures of dispersed embryonic chick retina. Nuclear run-on experiments show that the circadian regulation of iodopsin transcript abundance occurs at the level of gene transcription. Our results provide a demonstration of clock-regulated gene expression in a vertebrate preparation maintained in cell culture.
journal_name
Neuronjournal_title
Neuronauthors
Pierce ME,Sheshberadaran H,Zhang Z,Fox LE,Applebury ML,Takahashi JSdoi
10.1016/0896-6273(93)90161-jsubject
Has Abstractpub_date
1993-04-01 00:00:00pages
579-84issue
4eissn
0896-6273issn
1097-4199pii
0896-6273(93)90161-Jjournal_volume
10pub_type
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