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Updated: Jun 1, 2026
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Measuring Synaptic Vesicle Endocytosis in Cultured Hippocampal Neurons
Published on: September 4, 2017
DISC1 regulates synaptic vesicle transport via a lithium-sensitive pathway
Rafael Flores1, Yuki Hirota, Brian Armstrong
1Department of Neurosciences, Beckman Research Institute of City of Hope, 1500 E. Duarte Rd., Duarte, CA 91010, USA.
Neuroscience Research
|June 14, 2011
Summary
Disrupted-in-Schizophrenia 1 (DISC1) impacts neuron function by regulating synaptic vesicle transport. Lithium treatment can correct DISC1-related transport defects, offering therapeutic potential for mental illnesses.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Disrupted-in-Schizophrenia 1 (DISC1) is linked to major mental illnesses like schizophrenia and bipolar disorder.
- While DISC1's role in neural development is known, the mechanisms behind associated neuropsychiatric symptoms are unclear.
Purpose of the Study:
- To investigate the role of DISC1 in synaptic vesicle transport.
- To elucidate the molecular mechanisms of DISC1 dysfunction in neurons.
- To explore lithium's therapeutic potential for DISC1-related neuronal transport defects.
Main Methods:
- Knockdown of DISC1 expression in primary cortical neurons.
- Expression of a dominant-negative DISC1 mutant.
- Analysis of vesicle transport along microtubules.
- Investigation of protein interactions (FEZ1, Synaptotagmin-1) and effects of lithium.
Main Results:
- DISC1 enhances synaptic vesicle transport; its knockdown attenuates this process.
- A dominant-negative DISC1 mutant disrupts FEZ1 and Synaptotagmin-1 assembly, impairing vesicle transport.
- Lithium treatment restores FEZ1-Synaptotagmin-1 assembly and normalizes transport in mutant DISC1 neurons.
Conclusions:
- DISC1 plays a crucial role in neuronal organelle transport.
- Dysfunctional DISC1 disrupts synaptic vesicle transport via altered protein complex assembly.
- Targeting DISC1-mediated transport pathways offers a potential therapeutic strategy for neuropsychiatric diseases.
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