Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2002-5-16
pubmed:abstractText
The signaling pathways that couple light photoreception to entrainment of the circadian clock have yet to be deciphered. Two prominent groups of candidates for the circadian photoreceptors are opsins (e.g., melanopsin) and blue-light photoreceptors (e.g., cryptochromes). We have previously showed that the zebrafish is an ideal model organism in which to study circadian regulation and light response in peripheral tissues. Here, we used the light-responsive zebrafish cell line Z3 to dissect the response of the clock gene zPer2 to light. We show that the MAPK (mitogen-activated protein kinase) pathway is essential for this response, although other signaling pathways may also play a role. Moreover, action spectrum analyses of zPer2 transcriptional response to monochromatic light demonstrate the involvement of a blue-light photoreceptor. The Cry1b and Cry3 cryptochromes constitute attractive candidates as photoreceptors in this setting. Our results establish a link between blue-light photoreceptors, probably cryptochromes, and the MAPK pathway to elicit light-induced transcriptional activation of clock genes.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Cryptochromes, http://linkedlifedata.com/resource/pubmed/chemical/Drosophila Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Eye Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Fish Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Flavoproteins, http://linkedlifedata.com/resource/pubmed/chemical/Mitogen-Activated Protein Kinases, http://linkedlifedata.com/resource/pubmed/chemical/Period Circadian Proteins, http://linkedlifedata.com/resource/pubmed/chemical/RNA, Messenger, http://linkedlifedata.com/resource/pubmed/chemical/Receptors, G-Protein-Coupled, http://linkedlifedata.com/resource/pubmed/chemical/Zebrafish Proteins, http://linkedlifedata.com/resource/pubmed/chemical/cryptochrome protein, Drosophila
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0960-9822
pubmed:author
pubmed:issnType
Print
pubmed:day
14
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
844-8
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:12015122-Adaptation, Ocular, pubmed-meshheading:12015122-Animals, pubmed-meshheading:12015122-Biological Clocks, pubmed-meshheading:12015122-Cell Line, pubmed-meshheading:12015122-Circadian Rhythm, pubmed-meshheading:12015122-Color, pubmed-meshheading:12015122-Cryptochromes, pubmed-meshheading:12015122-Drosophila Proteins, pubmed-meshheading:12015122-Eye Proteins, pubmed-meshheading:12015122-Fish Proteins, pubmed-meshheading:12015122-Flavoproteins, pubmed-meshheading:12015122-Gene Expression Profiling, pubmed-meshheading:12015122-Gene Expression Regulation, pubmed-meshheading:12015122-Light, pubmed-meshheading:12015122-MAP Kinase Signaling System, pubmed-meshheading:12015122-Mitogen-Activated Protein Kinases, pubmed-meshheading:12015122-Period Circadian Proteins, pubmed-meshheading:12015122-Photoreceptor Cells, Invertebrate, pubmed-meshheading:12015122-RNA, Messenger, pubmed-meshheading:12015122-Receptors, G-Protein-Coupled, pubmed-meshheading:12015122-Time Factors, pubmed-meshheading:12015122-Zebrafish, pubmed-meshheading:12015122-Zebrafish Proteins
pubmed:year
2002
pubmed:articleTitle
Light induction of a vertebrate clock gene involves signaling through blue-light receptors and MAP kinases.
pubmed:affiliation
Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS - INSERM - ULP, BP 10142, 67404, Illkirch-Strasbourg, France.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't