Issue 3, 2019

Kinase network dysregulation in a human induced pluripotent stem cell model of DISC1 schizophrenia

Abstract

Protein kinases orchestrate signal transduction pathways involved in central nervous system functions ranging from neurodevelopment to synaptic transmission and plasticity. Abnormalities in kinase-mediated signaling are involved in the pathophysiology of neurological disorders, including neuropsychiatric disorders. Here, we expand on the hypothesis that kinase networks are dysregulated in schizophrenia. We investigated changes in serine/threonine kinase activity in cortical excitatory neurons differentiated from induced pluripotent stem cells (iPSCs) from a schizophrenia patient presenting with a 4 bp mutation in the disrupted in schizophrenia 1 (DISC1) gene and a corresponding control. Using kinome peptide arrays, we demonstrate large scale abnormalities in DISC1 cells, including a global depression of serine/threonine kinase activity, and changes in activity of kinases, including AMP-activated protein kinase (AMPK), extracellular signal-regulated kinases (ERK), and thousand-and-one amino acid (TAO) kinases. Using isogenic cell lines in which the DISC1 mutation is either introduced in the control cell line, or rescued in the schizophrenia cell line, we ascribe most of these changes to a direct effect of the presence of the DISC1 mutation. Investigating the gene expression signatures downstream of the DISC1 kinase network, and mapping them on perturbagen signatures obtained from the Library of Integrated Network-based Cellular Signatures (LINCS) database, allowed us to propose novel drug targets able to reverse the DISC1 kinase dysregulation gene expression signature. Altogether, our findings provide new insight into abnormalities of kinase networks in schizophrenia and suggest possible targets for disease intervention.

Graphical abstract: Kinase network dysregulation in a human induced pluripotent stem cell model of DISC1 schizophrenia

Supplementary files

Article information

Article type
Research Article
Submitted
26 Jul 2018
Accepted
23 Apr 2019
First published
20 May 2019
This article is Open Access
Creative Commons BY-NC license

Mol. Omics, 2019,15, 173-188

Kinase network dysregulation in a human induced pluripotent stem cell model of DISC1 schizophrenia

E. Bentea, E. A. K. Depasquale, S. M. O’Donovan, C. R. Sullivan, M. Simmons, J. H. Meador-Woodruff, Y. Zhou, C. Xu, B. Bai, J. Peng, H. Song, G. Ming, J. Meller, Z. Wen and R. E. McCullumsmith, Mol. Omics, 2019, 15, 173 DOI: 10.1039/C8MO00173A

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