Kari Hoyt

Kari Hoyt

Kari Hoyt, PhD

Unit / Department / Division
Pharmaceutics and Pharmacology
Outcomes and Translational Sciences Affiliated Faculty
412 Riffe Building
Email Address
Phone Number

Professional Interests

Professional Interests

Our research team members are engaged in pre-clinical target identification for pharmacologic treatment of neurodegenerative and psychiatric disorders. We use in vivo and in vitro high-resolution fluorescence microscopy and high-content analysis of live neurons to reveal complex interactions between signaling pathways that regulate cell survival/function and circadian clock signaling. This work is designed to identify new avenues of chronotherapeutic target development for CNS disorders. Current work focuses on two related themes:  (1) Alzheimer’s Disease and desynchronization of cortico-limbic circadian rhythms and (2) MAPK signaling: gates, oscillators and circadian timing.


  • PhD, Pharmacology, University of Pittsburgh School of Medicine


  • Dean's Innovative Research Award, 2019

Journal Articles

  • Aten S, Kalidindi A, Yoon H, Rumbaugh G, Hoyt KR, Obrietan K. SynGAP is expressed in the murine suprachiasmatic nucleus and regulates circadian-gated locomotor activity and light-entrainment capacity. Eur J Neurosci. 2020 Nov 10.
  • Aten S, Page CE, Kalidindi A, Wheaton K, Niraula A, Godbout JP, Hoyt KR, Obrietan K. miR-132/212 is induced by stress and its dysregulation triggers anxiety-related behavior. Neuropharmacology. 2018 Oct 18;144:256-270.
  • Wheaton KL, Hansen KF, Aten S, Sullivan KA, Yoon H, Hoyt KR, Obrietan K. The Phosphorylation of CREB at Serine 133 Is a Key Event for Circadian Clock Timing and Entrainment in the Suprachiasmatic Nucleus. J Biol Rhythms. 2018 Oct;33(5):497-514.
  • Aten S, Hansen KF, Snider K, Wheaton K, Kalidindi A, Garcia A, Alzate-Correa D, Hoyt KR, Obrietan K. miR-132 couples the circadian clock to daily rhythms of neuronal plasticity and cognition. Learn Mem. 2018 May;25(5):214-229.
  • Wheaton K, Aten S, Queiroz LS, Sullivan K, Oberdick J, Hoyt KR, Obrietan K. Circadian expression and functional characterization of PEA-15 within the mouse suprachiasmatic nucleus. Eur J Neurosci. 2018 Apr;47(7):845-857.
  • Choi YS, Horning P, Aten S, Karelina K, Alzate-Correa D, Arthur JSC, Hoyt KR, Obrietan K. Mitogen- and Stress-Activated Protein Kinase 1 Regulates Status Epilepticus-Evoked Cell Death in the Hippocampus. 2017 Sep-Oct;9(5):1759091417726607.
  • Choi YS, Lee B, Hansen KF, Aten S, Horning P, Wheaton KL, Impey S, Hoyt KR, Obrietan K. Status epilepticus stimulates NDEL1 expression via the CREB/CRE pathway in the adult mouse brain. Neuroscience. 2016 09 07;331:1-12.
  • Snider KH, Dziema H, Aten S, Loeser J, Norona FE, Hoyt K, Obrietan K. Modulation of learning and memory by the targeted deletion of the circadian clock gene Bmal1 in forebrain circuits. Behav Brain Res. 2016 07 15;308:222-35.
  • Kumar S, Pan CC, Shah N, Wheeler SE, Hoyt KR, Hempel N, Mythreye K, Lee NY. Activation of Mitofusin2 by Smad2-RIN1 Complex during Mitochondrial Fusion. Mol Cell. 2016 05 19;62(4):520-31.
  • Aten S, Hansen KF, Hoyt KR, Obrietan K. The miR-132/212 locus: a complex regulator of neuronal plasticity, gene expression and cognition. RNA Dis. 2016;3(2).
  • Sakamoto K, Norona FE, Alzate-Correa D, Scarberry D, Hoyt KR, Obrietan K. Clock and light regulation of the CREB coactivator CRTC1 in the suprachiasmatic circadian clock. J Neurosci. 2013 May 22;33(21):9021-7.