Related Experiment Video
Updated: Nov 22, 2025
Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
MORC1 methylation and BDI are associated with microstructural features of the hippocampus and medial prefrontal
Annakarina Mundorf1, Judith Schmitz2, Karola Hünten1
1Division of Experimental and Molecular Psychiatry, Department of Psychiatry, Psychotherapy and Preventive Medicine, LWL University Hospital, Ruhr-University Bochum, Germany.
Background:
Alterations in the hippocampus and prefrontal cortex (PFC) have frequently been reported in depressed patients. These parameters might prove to be a consistent finding in depression. In addition, peripheral DNA methylation of the MORC1 gene promoter showed stable associations with depression across independent samples. However, the question arises whether MORC1, supposedly acting as transcription factor, might also be involved in neurobiological alterations accompanying depression. This study further analyses the role of MORC1 in depression by investigating a potential correlation between peripheral MORC1 DNA methylation and neuronal structural properties previously associated with depression in humans.
Methods:
Beck Depression Inventory (BDI) was assessed in 52 healthy participants. DNA was extracted from buccal cells and MORC1 methylation correlated with micro- and macrostructural properties derived from magnetic resonance imaging (MRI) and neurite orientation dispersion and density imaging (NODDI) in the hippocampus and medial prefrontal cortex (mPFC).
Results:
MORC1 methylation was associated with volume reduction and neurite orientation dispersion and density markers in the hippocampus and mPFC. BDI was positively associated with neurite orientation dispersion and density markers in the hippocampus.
Limitations:
The study was conducted in a small sample of healthy participants with subclinical depressive symptoms. Peripheral tissue was analyzed.
Conclusion:
We found significant negative associations between peripheral MORC1 methylation and macro- and microstructural markers in the hippocampus and mPFC. Thus, MORC1 might be involved in neurobiological properties. Studies investigating neuronal methylation patterns of MORC1 are needed to support this hypothesis.
Insights
Peripheral MORC1 gene methylation is linked to brain structure changes in the hippocampus and medial prefrontal cortex, suggesting a role in depression neurobiology.
Area of Science:
- Neuroscience
- Genetics
- Psychiatry
Background:
- Depression is associated with alterations in the hippocampus and prefrontal cortex (PFC).
- Peripheral DNA methylation of the MORC1 gene promoter has shown stable associations with depression.
- The role of MORC1 in depression-related neurobiological alterations requires further investigation.
Purpose of the Study:
- To investigate the correlation between peripheral MORC1 DNA methylation and neuronal structural properties in the hippocampus and medial prefrontal cortex (mPFC).
- To explore the potential role of MORC1 in the neurobiology of depression.
Main Methods:
- Assessed Beck Depression Inventory (BDI) in 52 healthy participants.
- Extracted DNA from buccal cells to analyze MORC1 methylation.
- Correlated MORC1 methylation with micro- and macrostructural properties using MRI and neurite orientation dispersion and density imaging (NODDI) in the hippocampus and mPFC.
Main Results:
- MORC1 methylation was negatively associated with volume reduction and neurite orientation dispersion and density markers in the hippocampus and mPFC.
- BDI scores positively correlated with neurite orientation dispersion and density markers in the hippocampus.
Conclusions:
- Peripheral MORC1 methylation is significantly associated with macro- and microstructural brain markers in the hippocampus and mPFC.
- MORC1 may play a role in the neurobiological underpinnings of depression.
- Further research into neuronal methylation patterns of MORC1 is warranted.
