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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Dysfunction of protein kinase FA/GSK-3 alpha in lymphocytes of patients with schizophrenic disorder.

As compared to normal people, the lymphocytes of patients with schizophrenia were found to have an impairment of ATP.Mg-dependent protein phosphatase activation. More importantly, the impaired protein phosphatase activation in the lymphocytes of schizophrenic patients could be consistently and completely restored to normal by exogenous pure protein kinase FA/glycogen synthase kinase-3 alpha (kinase FA/GSK-3 alpha) (the activating factor of ATP.Mg-dependent protein phosphatase), indicating that the molecular mechanism for the impaired protein phosphatase activation in schizophrenic patients may be due to a functional loss of kinase FA/GSK-3 alpha. Immunoblotting and kinase activity analysis in an anti-kinase FA/GSK-3 alpha immunoprecipitate further demonstrate that both cellular activities and protein levels of kinase FA/GSK-3 alpha in the lymphocytes of schizophrenic patients were greatly impared as compared to normal controls. Statistical analysis revealed that the lymphocytes isolated from 37 normal people contain kinase FA/GSK-3 alpha activity in the high levels of 14.8 +/- 2.4 units/mg of cell protein, whereas the lymphocytes of 48 patients with schizophrenic disorder contain kinase FA/GSK-3 alpha activity in the low levels of 2.8 +/- 1.6 units/mg, indicating that the different levels of kinase FA/GSK-3 alpha activity between schizophrenic patients and normal people are statistically significant. Taken together, the results provide initial evidence that patients with schizophrenic disorder may have a common impairment in the protein levels and cellular activities of kinase FA/GSK-3 alpha, a multisubstrate protein kinase and a multisubstrate protein phosphatase activator in their lymphocytes.[1]

References

  1. Dysfunction of protein kinase FA/GSK-3 alpha in lymphocytes of patients with schizophrenic disorder. Yang, S.D., Yu, J.S., Lee, T.T., Yang, C.C., Ni, M.H., Yang, Y.Y. J. Cell. Biochem. (1995) [Pubmed]
 
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