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Updated: Aug 5, 2026
10:38
Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
Published on: September 27, 2012
Mood and Psychosis Risk-Associated Genes Regulate Neuronal Circadian Rhythms Across the Transcriptome
Xiangning Xue1, Zoe Adelsheim2, Michael T Gorczyca1
1University of Pittsburgh, Department of Psychiatry, Pittsburgh, PA 15213.
Biological Psychiatry
|July 27, 2026
Summary
Mood and psychosis risk-associated genes (MPRGs) significantly impact neuronal circadian rhythms. Disruptions in these genetic pathways may underlie biological changes seen in psychiatric disorders.
Area of Science:
- Neuroscience
- Genetics
- Chronobiology
Background:
- Circadian rhythm disruptions are linked to mood and psychotic disorders.
- The role of mood and psychosis risk-associated genes (MPRGs) in cellular circadian rhythms is not well understood.
Purpose of the Study:
- Investigate how MPRGs influence temporal gene expression dynamics.
- Determine the contribution of MPRGs to molecular clock pathways and cellular circadian rhythms.
Main Methods:
- Knockdown of specific MPRGs (ARNTL, ANK3, CACNA1C, TCF4) in human neuronal precursor cells.
- Whole-transcriptome RNA sequencing over 24 hours to analyze gene expression patterns.
- Rhythm and pathway analyses to identify rhythmic genes and affected pathways.
Main Results:
- MPRG knockdown altered the phase and amplitude of rhythmic genes.
- ARNTL knockdown led to widespread loss and gain of gene rhythms.
- CACNA1C knockdown increased the number of rhythmic genes, while ANK3 and TCF4 caused phase shifts.
- Affected genes are involved in synaptic transmission, cellular stress, and ion channels.
Conclusions:
- MPRGs play a significant role in regulating neuronal circadian rhythms across the transcriptome.
- Altered circadian rhythms driven by MPRGs may contribute to the pathophysiology of psychiatric disorders.
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