The VPAC(2) receptor is essential for circadian function in the mouse suprachiasmatic nuclei - PubMed (original) (raw)

. 2002 May 17;109(4):497-508.

doi: 10.1016/s0092-8674(02)00736-5.

Hugh M Marston, Sanbing Shen, Christopher Spratt, Katrine M West, W John Sheward, Christine F Morrison, Julia R Dorin, Hugh D Piggins, Jean Claude Reubi, John S Kelly, Elizabeth S Maywood, Michael H Hastings

Affiliations

Free article

The VPAC(2) receptor is essential for circadian function in the mouse suprachiasmatic nuclei

Anthony J Harmar et al. Cell. 2002.

Free article

Abstract

The neuropeptides pituitary adenylate cyclase-activating polypeptide (PACAP) and vasoactive intestinal peptide (VIP) are implicated in the photic entrainment of circadian rhythms in the suprachiasmatic nuclei (SCN). We now report that mice carrying a null mutation of the VPAC(2) receptor for VIP and PACAP (Vipr2(-/-)) are incapable of sustaining normal circadian rhythms of rest/activity behavior. These mice also fail to exhibit circadian expression of the core clock genes mPer1, mPer2, and mCry1 and the clock-controlled gene arginine vasopressin (AVP) in the SCN. Moreover, the mutants fail to show acute induction of mPer1 and mPer2 by nocturnal illumination. This study highlights the role of intercellular neuropeptidergic signaling in maintenance of circadian function within the SCN.

PubMed Disclaimer

Publication types

MeSH terms

Substances

LinkOut - more resources