TY - JOUR
T1 - Chromatin alterations associated with down-regulated metabolic gene expression in the prefrontal cortex of subjects with schizophrenia
AU - Akbarian, Schahram
AU - Ruehl, Martin G.
AU - Bliven, Erin
AU - Luiz, Lori A.
AU - Peranelli, Amy C.
AU - Baker, Stephen P.
AU - Roberts, Rosalinda C.
AU - Bunney, William E.
AU - Conley, Robert C.
AU - Jones, Edward G.
AU - Tamminga, Carol A.
AU - Guo, Yin
PY - 2005/8
Y1 - 2005/8
N2 - Background: Schizophrenia is frequently accompanied by hypometabolism and altered gene expression in the prefrontal cortex. Cellular metabolism regulates chromatin structure, including covalent histone modifications, which are epigenetic regulators of gene expression. Objective: To test the hypothesis that down-regulated metabolic gene expression is associated with histone modification changes in the prefrontal cortex of subjects with schizophrenia. Design and Subjects: Histones and gene transcripts were profiled in the postmortem prefrontal cortex of 41 subjects with schizophrenia and 41 matched controls. The phosphorylation, acetylation, and methylation of 6 lysine, serine, and arginine residues of histones H3 and H4 were examined together with 16 metabolic gene transcripts using serial immunoblotting, immunohistochemical analysis, custom-made complementary DNA arrays, and quantitative real-time reverse transcriptase-polymerase chain reaction. Results: Subjects with schizophrenia, as a group, showed no significant alterations in histone profiles or gene expression. In a subgroup of 8 patients with schizophrenia, levels of H3-(methyl)arginine 17, H3meR17, exceeded control values by 30%, and this was associated with the decreased expression of 4 metabolic transcripts. Conclusions: High levels of H3-(methyl)arginine 17 are associated with down-regulated metabolic gene expression in the prefrontal cortex of a subset of subjects with schizophrenia. Histone modifications may contribute to the pathogenesis of prefrontal dysfunction in schizophrenia.
AB - Background: Schizophrenia is frequently accompanied by hypometabolism and altered gene expression in the prefrontal cortex. Cellular metabolism regulates chromatin structure, including covalent histone modifications, which are epigenetic regulators of gene expression. Objective: To test the hypothesis that down-regulated metabolic gene expression is associated with histone modification changes in the prefrontal cortex of subjects with schizophrenia. Design and Subjects: Histones and gene transcripts were profiled in the postmortem prefrontal cortex of 41 subjects with schizophrenia and 41 matched controls. The phosphorylation, acetylation, and methylation of 6 lysine, serine, and arginine residues of histones H3 and H4 were examined together with 16 metabolic gene transcripts using serial immunoblotting, immunohistochemical analysis, custom-made complementary DNA arrays, and quantitative real-time reverse transcriptase-polymerase chain reaction. Results: Subjects with schizophrenia, as a group, showed no significant alterations in histone profiles or gene expression. In a subgroup of 8 patients with schizophrenia, levels of H3-(methyl)arginine 17, H3meR17, exceeded control values by 30%, and this was associated with the decreased expression of 4 metabolic transcripts. Conclusions: High levels of H3-(methyl)arginine 17 are associated with down-regulated metabolic gene expression in the prefrontal cortex of a subset of subjects with schizophrenia. Histone modifications may contribute to the pathogenesis of prefrontal dysfunction in schizophrenia.
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U2 - 10.1001/archpsyc.62.8.829
DO - 10.1001/archpsyc.62.8.829
M3 - Article
C2 - 16061760
AN - SCOPUS:23744449082
SN - 0003-990X
VL - 62
SP - 829
EP - 840
JO - Archives of General Psychiatry
JF - Archives of General Psychiatry
IS - 8
ER -