DOI

  • Eduard Bentea
  • Erica A K Depasquale
  • Sinead M O'Donovan
  • Courtney R Sullivan
  • Micah Simmons
  • James H Meador-Woodruff
  • Ying Zhou
  • Chongchong Xu
  • Bing Bai
  • Junmin Peng
  • Hongjun Song
  • Guo-Li Ming
  • Jarek Meller
  • Zhexing Wen
  • Robert E McCullumsmith

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.

Original languageEnglish
Pages (from-to)173-188
Number of pages16
JournalOmics : a journal of integrative biology
Volume15
Issue number3
DOIs
Publication statusPublished - 10 Jun 2019

ID: 45895823