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Transcription profiling of mouse SCN after 30-min light pulse

ABSTRACT: The transmission of information about the photic environment to the circadian clock involves a complex array of neurotransmitters, receptors, and second messenger systems. Using laser capture microscopy and microarray analysis, a population of genes rapidly induced by light in the suprachiasmatic nucleus is identified. Experiment Overall Design: Mice were exposed starting at 1 hour after lights off to a 30-minute light pulse. At the end of the light pulse, mice were euthanized and the brains extracted. Cells from the suprachiasmatic nucleus were extracted using laser capture microscopy and gene expression was quantified using Affymetrix microarrays. Genes showing a significant increase in expression following the light pulse as compared to a sham light pulse were identified.

ORGANISM(S): Mus musculus

SUBMITTER: Eric Mintz

PROVIDER: E-GEOD-6904 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Identification of novel light-induced genes in the suprachiasmatic nucleus.

Porterfield Veronica M VM Piontkivska Helen H Mintz Eric M EM

BMC neuroscience 20071119

<h4>Background</h4>The transmission of information about the photic environment to the circadian clock involves a complex array of neurotransmitters, receptors, and second messenger systems. Exposure of an animal to light during the subjective night initiates rapid transcription of a number of immediate-early genes in the suprachiasmatic nucleus of the hypothalamus. Some of these genes have known roles in entraining the circadian clock, while others have unknown functions. Using laser capture mi ...[more]

PMID: 18021443

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