Proteomics approaches shed new light on hibernation physiology

KR Grabek, SL Martin, AG Hindle - Journal of Comparative Physiology B, 2015 - Springer
The broad phylogenetic distribution and rapid phenotypic transitions of mammalian hibernators
imply that hibernation is accomplished by differential expression of common genes. …

Metabolic changes associated with the long winter fast dominate the liver proteome in 13-lined ground squirrels

AG Hindle, KR Grabek, LE Epperson… - Physiological …, 2014 - journals.physiology.org
Small-bodied hibernators partition the year between active homeothermy and hibernating
heterothermy accompanied by fasting. To define molecular events underlying hibernation that …

[HTML][HTML] Genetic variation drives seasonal onset of hibernation in the 13-lined ground squirrel

KR Grabek, TF Cooke, LE Epperson, KK Spees… - Communications …, 2019 - nature.com
Hibernation in sciurid rodents is a dynamic phenotype timed by a circannual clock. When
housed in an animal facility, 13-lined ground squirrels exhibit variation in seasonal onset of …

Enhanced stability and polyadenylation of select mRNAs support rapid thermogenesis in the brown fat of a hibernator

KR Grabek, C Diniz Behn, GS Barsh, JR Hesselberth… - Elife, 2015 - elifesciences.org
10.7554/eLife.04517.001 During hibernation, animals cycle between torpor and arousal.
These cycles involve dramatic but poorly understood mechanisms of dynamic physiological …

Multistate proteomics analysis reveals novel strategies used by a hibernator to precondition the heart and conserve ATP for winter heterothermy

KR Grabek, A Karimpour-Fard… - Physiological …, 2011 - journals.physiology.org
The hibernator's heart functions continuously and avoids damage across the wide
temperature range of winter heterothermy. To define the molecular basis of this phenotype, we …

[HTML][HTML] Dynamic RNA regulation in the brain underlies physiological plasticity in a hibernating mammal

R Fu, AE Gillen, KR Grabek, KA Riemondy… - Frontiers in …, 2021 - frontiersin.org
Hibernation is a physiological and behavioral phenotype that minimizes energy expenditure.
Hibernators cycle between profound depression and rapid hyperactivation of multiple …

Comparative tissue transcriptomics highlights dynamic differences among tissues but conserved metabolic transcript prioritization in preparation for arousal from …

LK Bogren, KR Grabek, GS Barsh, SL Martin - Journal of Comparative …, 2017 - Springer
During the hibernation season, 13-lined ground squirrels spend days to weeks in torpor with
body temperatures near freezing then spontaneously rewarm. The molecular drivers of the …

Replication and further characterization of a Type 1 diabetes‐associated locus at the telomeric end of the major histocompatibility complex

…, JC Siebert, JM Jasinski, KR Grabek… - Journal of …, 2011 - Wiley Online Library
Background: We recently reported an association between Type 1 diabetes and the telomeric
major histocompatibility complex (MHC) single nucleotide polymorphism (SNP) rs1233478…

Daily rhythms of PERIOD protein in the eyestalk of the American lobster, Homarus americanus

KR Grabek, CC Chabot - Marine and freshwater behaviour and …, 2012 - Taylor & Francis
The daily rhythm of PERIOD (PER) protein expression is an integral component of the circadian
clock, which is found among a broad range of animal species including fruit flies, marine …

Genetic architecture drives seasonal onset of hibernation in the 13-lined ground squirrel

KR Grabek, TF Cooke, LE Epperson, KK Spees… - bioRxiv, 2017 - biorxiv.org
Hibernation is a highly dynamic phenotype whose timing, for many mammals, is controlled
by a circannual clock and accompanied by rhythms in body mass and food intake. When …