Reduced VIP Expression Affects Circadian Clock Function in VIP-IRES-CRE Mice (JAX 010908).
Reduced VIP Expression Affects Circadian Clock Function in VIP-IRES-CRE Mice (JAX 010908).
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DOI:
10.1177/0748730420925573
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发表时间:
2020-08
影响因子:
3.5
通讯作者:
Evans, Jennifer A.
中科院分区:
文献类型:
--
作者:
Joye, Deborah A. M.;Rohr, Kayla E.;Keller, Danielle;Inda, Thomas;Telega, Adam;Pancholi, Harshida;Carmona-Alcocer, Vania;Evans, Jennifer A.
关键词:
Circadian rhythms are programmed by the suprachiasmatic nucleus (SCN), which relies on neuropeptide signaling to maintain daily timekeeping. Vasoactive intestinal polypeptide (VIP) is critical for SCN function, but the precise role of VIP neurons in SCN circuits is not fully established. To interrogate their contribution to SCN circuits, VIP neurons can be manipulated specifically using the DNA-editing enzyme Cre recombinase. Although the Cre transgene is assumed to be inert by itself, we find that VIP expression is reduced in both heterozygous and homozygous adult VIP-IRES-Cre mice (JAX 010908). Compared with wild-type mice, homozygous VIP-Cre mice display faster reentrainment and shorter free-running period but do not become arrhythmic in constant darkness. Consistent with this phenotype, homozygous VIP-Cre mice display intact SCN PER2∷LUC rhythms, albeit with altered period and network organization. We present evidence that the ability to sustain molecular rhythms in the VIP-Cre SCN is not due to residual VIP signaling; rather, arginine vasopressin signaling helps to sustain SCN function at both intracellular and intercellular levels in this model. This work establishes that the VIP-IRES-Cre transgene interferes with VIP expression but that loss of VIP can be mitigated by other neuropeptide signals to help sustain SCN function. Our findings have implications for studies employing this transgenic model and provide novel insight into neuropeptide signals that sustain daily timekeeping in the master clock.
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影响因子:
16.2
作者:
Evans JA;Leise TL;Castanon-Cervantes O;Davidson AJ
通讯作者:
Davidson AJ
DOI:
10.1523/jneurosci.3801-08.2009
发表时间:
2009-02-11
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Ciarleglio CM;Gamble KL;Axley JC;Strauss BR;Cohen JY;Colwell CS;McMahon DG
通讯作者:
McMahon DG
影响因子:
3.5
作者:
Cheng, Arthur H.;Fung, Samuel W.;Cheng, Hai-Ying Mary
通讯作者:
Cheng, Hai-Ying Mary
影响因子:
4.1
作者:
Hoffmann, Hanne M.;Larder, Rachel;Mellon, Pamela L.
通讯作者:
Mellon, Pamela L.
影响因子:
5.3
作者:
Hughes, AT;Fahey, B;Piggins, HD
通讯作者:
Piggins, HD