In vivo imaging of clock gene expression in multiple tissues of freely moving mice.

Abstract:

:Clock genes are expressed throughout the body, although how they oscillate in unrestrained animals is not known. Here, we show an in vivo imaging technique that enables long-term simultaneous imaging of multiple tissues. We use dual-focal 3D tracking and signal-intensity calibration to follow gene expression in a target area. We measure circadian rhythms of clock genes in the olfactory bulb, right and left ears and cortices, and the skin. In addition, the kinetic relationship between gene expression and physiological responses to experimental cues is monitored. Under stable conditions gene expression is in phase in all tissues. In response to a long-duration light pulse, the olfactory bulb shifts faster than other tissues. In Cry1(-/-) Cry2(-/-) arrhythmic mice circadian oscillation is absent in all tissues. Thus, our system successfully tracks circadian rhythms in clock genes in multiple tissues in unrestrained mice.

journal_name

Nat Commun

journal_title

Nature communications

authors

Hamada T,Sutherland K,Ishikawa M,Miyamoto N,Honma S,Shirato H,Honma K

doi

10.1038/ncomms11705

subject

Has Abstract

pub_date

2016-06-10 00:00:00

pages

11705

issn

2041-1723

pii

ncomms11705

journal_volume

7

pub_type

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