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Related Experiment Video

Updated: Mar 15, 2026

Generation, Purification, and Characterization of Cell-invasive DISC1 Protein Species
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Generation, Purification, and Characterization of Cell-invasive DISC1 Protein Species

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Cell Type-Specific Effects of Mutant DISC1: A Proteomics Study.

Meng Xia1, Jantine A C Broek2, Yan Jouroukhin3

  • 1Departments of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Md., USA; Preclinical College, Guangxi University of Chinese Medicine, Nanning, PR China.

Molecular Neuropsychiatry
|September 9, 2016
PubMed
Summary

Genetic risk factors for schizophrenia, like mutant DISC1, impact brain cells differently. This study reveals cell-specific molecular changes in neurons and astrocytes, highlighting diverse pathways in psychiatric disorders.

Keywords:
AstrocytesBiomarkersDISC1NeuronsProteomicsPsychiatric disorders

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Area of Science:

  • Neuroscience
  • Genetics
  • Cell Biology

Background:

  • Psychiatric genetics research has advanced, yet glial cell genetic risk factors remain understudied.
  • Glial cells, distinct from neurons, may harbor unique molecular pathologies relevant to psychiatric disorders.

Purpose of the Study:

  • To investigate the cell-type-specific effects of mutant DISC1, a schizophrenia risk gene, in neurons and astrocytes.
  • To identify molecular pathways perturbed by DISC1 variants in different brain cell types.

Main Methods:

  • Utilized primary neuron and astrocyte cultures.
  • Employed an unbiased mass spectrometry-based proteomic approach to analyze protein expression changes.

Main Results:

  • Mutant DISC1 in neurons altered proteins involved in neuronal development and vesicular transport (e.g., SOX1, Rab proteins).
  • Mutant DISC1 in astrocytes affected mitochondrial, nuclear, and cell adhesion proteins (e.g., GDPM, TMM43, ECM2).

Conclusions:

  • DISC1 variants exert cell type-specific molecular effects in the brain.
  • These distinct perturbations in neurons and astrocytes contribute to psychiatric disorders through heterogeneous mechanisms.