Cited by 85Schizophrenia research and treatmentCellular transport and secretionNeuroscience and Neuropharmacology Research

Quantitative Proteomic and Genetic Analyses of the Schizophrenia Susceptibility Factor Dysbindin Identify Novel Roles of the Biogenesis of Lysosome-Related Organelles Complex 1

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Gokhale, Avanti, Larimore, Jennifer, Werner, Erica, So, Lomon, Moreno-De-Luca, Andres, Lese-Martin, Christa, Lupashin, Vladimir V., Smith, Yoland +1 more·2012·The Journal of Neuroscience

Abstract

The Biogenesis of Lysosome-Related Organelles Complex 1 (BLOC-1) is a protein complex containing the schizophrenia susceptibility factor dysbindin, which is encoded by the gene DTNBP1 . However, mechanisms engaged by dysbindin defining schizophrenia susceptibility pathways have not been quantitatively elucidated. Here, we discovered prevalent and novel cellular roles of the BLOC-1 complex in neuronal cells by performing large-scale Stable Isotopic Labeling of Cells in Culture (SILAC) quantitative proteomics combined with genetic analyses in dysbindin-null mice ( Mus musculus ) and the genome of schizophrenia patients. We identified 24 proteins that associate with the BLOC-1 complex, many of which were altered in content/distribution in cells or tissues deficient in BLOC-1. New findings include BLOC-1 interactions with the COG complex, a Golgi apparatus tether, and antioxidant enzymes peroxiredoxins 1–2. Importantly, loci encoding eight of the 24 proteins are affected by genomic copy number variation in schizophrenia patients. Thus, our quantitative proteomic studies expand the functional repertoire of the BLOC-1 complex and provide insight into putative molecular pathways of schizophrenia susceptibility.

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Authors
Gokhale, A., Larimore, J., Werner, E., So, L., Moreno-De-Luca, A., Lese-Martin, C., Lupashin, V. V., Smith, Y., & Faundez, V.
Affiliations
  • Emory University (US)
  • University of Arkansas for Medical Sciences (US)
Venue
The Journal of Neuroscience
Published
2012-03-14
Volume
32
Issue
11
Pages
3697-3711
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2058428720
Cited by
85
References
72
Citations by year
2024: 3 · 2023: 2 · 2022: 4 · 2021: 3 · 2020: 4 · 2019: 2 · 2018: 4 · 2017: 7 · 2016: 5 · 2015: 16 · 2014: 13 · 2013: 16 · 2012: 6
FWCI
11.61
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Emory University (P30NS055077)
  • National Institutes of Health (NS42599)
  • School of Medicine, Emory University (P30NS055077)
  • National Institute of General Medical Sciences (GM077569, R01GM077569, GM083144, R01GM083144, K12GM000680)
  • National Institute of Neurological Disorders and Stroke (R56NS042599, NS-42599, R01NS042599, P30NS055077)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
dysbindin, DTNBP1, BLOC-1, lysosome-related organelles, schizophrenia susceptibility, COG complex, peroxiredoxin, antioxidant enzymes, copy number variation, neurons
MeSH terms
Dysbindin, Animals, Carrier Proteins, Humans, Mice, Inbred C57BL, Mice, Transgenic, Nerve Tissue Proteins, Schizophrenia, Mice, Knockout, Genetic Predisposition to Disease, Proteomics, Cell Line, Tumor, Dystrophin-Associated Proteins, Mice, Genetic Association Studies, HEK293 Cells

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