Expression of WNT Signaling Genes in the Dorsolateral Prefrontal Cortex in Schizophrenia

Author:

Sahay Smita1ORCID,Hamoud Abdul-rizaq1ORCID,Osman Mahasin2ORCID,Pulvender Priyanka1,McCullumsmith Robert E.134ORCID

Affiliation:

1. Department of Neurosciences, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA

2. Department of Cancer Biology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA

3. Department of Psychiatry, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA

4. Neurosciences Institute, Promedica, Toledo, OH 43606, USA

Abstract

Gene expression alterations in postmortem schizophrenia tissue are well-documented and are influenced by genetic, medication, and epigenetic factors. The Wingless/Integrated (WNT) signaling pathway, critical for cell growth and development, is involved in various cellular processes including neurodevelopment and synaptic plasticity. Despite its importance, WNT signaling remains understudied in schizophrenia, a disorder characterized by metabolic and bioenergetic defects in cortical regions. In this study, we examined the gene expression of 10 key WNT signaling pathway transcripts: IQGAP1, CTNNβ1, GSK3β, FOXO1, LRP6, MGEA5, TCF4, βTRC, PPP1Cβ, and DVL2 in the dorsolateral prefrontal cortex (DLPFC) using postmortem tissue from schizophrenia subjects (n = 20, 10 males, 10 females) compared to age, pH, and postmortem interval (PMI)-matched controls (n = 20, 10 males, 10 females). Employing the R-shiny application Kaleidoscope, we conducted in silico “lookup” studies from published transcriptomic datasets to examine cell- and region-level expression of these WNT genes. In addition, we investigated the impact of antipsychotics on the mRNA expression of the WNT genes of interest in rodent brain transcriptomic datasets. Our findings revealed no significant changes in region-level WNT transcript expression; however, analyses of previously published cell-level datasets indicated alterations in WNT transcript expression and antipsychotic-specific modulation of certain genes. These results suggest that WNT signaling transcripts may be variably expressed at the cellular level and influenced by antipsychotic treatment, providing novel insights into the role of WNT signaling in the pathophysiology of schizophrenia.

Funder

the National Institute of Mental Health

National Institute of Health

Publisher

MDPI AG

Reference54 articles.

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