Convergent lines of evidence support CAMKK2 as a schizophrenia susceptibility gene

X-J Luo1, M Li2, L Huang3

  • 11] College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China [2] Department of Ophthalmology and Flaum Eye Institute, University of Rochester, Rochester, NY, USA.

Molecular Psychiatry
|August 21, 2013
PubMed

Insights

Calcium/calmodulin (CAM)-dependent protein kinase kinase 2 (CAMKK2) is downregulated in schizophrenia patients. A specific genetic variant, rs1063843, is linked to CAMKK2 expression and schizophrenia risk, impacting cognitive function.

Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Schizophrenia pathogenesis involves differential gene expression.
  • Identifying key genes and their regulatory variants is crucial for understanding schizophrenia.

Purpose of the Study:

  • To investigate the role of calcium/calmodulin (CAM)-dependent protein kinase kinase 2 (CAMKK2) in schizophrenia.
  • To identify genetic variants associated with CAMKK2 expression and schizophrenia risk.

Main Methods:

  • Analyzed two large-scale genome-wide expression studies.
  • Investigated single-nucleotide polymorphism (SNP) association with CAMKK2 expression.
  • Conducted multi-population association study for SNP rs1063843 and schizophrenia.
  • Performed protein-protein interaction (PPI) network analysis.

Main Results:

  • CAMKK2 was significantly downregulated in schizophrenia patients in both expression studies.
  • SNP rs1063843 in intron 17 of CAMKK2 strongly associated with CAMKK2 expression levels.
  • rs1063843 significantly associated with schizophrenia risk across multiple populations.
  • The T allele of rs1063843, linked to lower CAMKK2 expression, was more frequent in schizophrenia patients.
  • rs1063843 also associated with cognitive function and personality traits.
  • CAMKK2 identified within a highly interconnected PPI network of top schizophrenia genes.

Conclusions:

  • CAMKK2 downregulation and its regulatory SNP rs1063843 suggest a role in schizophrenia susceptibility.
  • Converging evidence supports CAMKK2's pivotal role in the pathogenesis of schizophrenia.

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