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2002 Fiscal Year Final Research Report Summary

Research on DNA methylation for two-generation pairs with schizophrenia (Anticipation and modulation of gene expression in schizophrenia)

Research Project

Project/Area Number 13671016
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Psychiatric science
Research InstitutionNagasaki University

Principal Investigator

IMAMURA Akira  Nagasaki University, Graduate School of Biomedical Sciences, Lecturer, 大学院・医歯薬学総合研究科, 講師 (40325642)

Co-Investigator(Kenkyū-buntansha) NAKANE Yoshibumi  Nagasaki International University, Professor, 人間社会学部, 教授 (80039833)
HAYASHIDA Masaki  Health Care Center, Associate Professor, 保健管理センター, 助教授 (70264223)
TSUJITA Takahiro  Hironaka Hospital, Medical Doctor, 医師 (40304919)
OKAZAKI Yuji  Mie University, Neuopsychiatry, Professor, 医学部, 教授 (40010318)
Project Period (FY) 2001 – 2002
Keywordsschizophrenia / anticpation / monozygotic twin / DNA methylation / methylation-sensitive restriction enzyme / HPLC
Research Abstract

The aim of this study was to explore the molecular mechanisms including epigenetic DNA modification underlying genetic anticipation in schizophrenia. Twelve two-generation pairs with schizophrenia, which showed prominent anticipation., were examined.
First, we investigated whether the promoter region of dopamine D2 receptor gene (DRD2) was methylated or not, using the methylation-sensitive restriction enzyme, Hap II, and the methylation-insensitive enzyme, MspI. After enzyme digestion, polymerase chain reaction (PCR) was performed, and. the. size of PCR products was determined with polyacrylamide gel electrophoresis. No difference was found between two generation in methylation of the promoter region of DRD2.
Second, we measured 5-methyl-2'-deoxycytidine (mC) contents by high performance liquid chromatography (HPLC) in peripheral leukocytes DNA obtained from eight two-generation pairs with schizophrenia, to compare the global methylation levels between two generation. We obtained no significant results in this method.
In summary, we found no evidence for the relationship between genetic anticipation and DNA methylation in schizophrenia. Therefore in future studies we will aim to collect more subjects and try other enzymes.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] The Japanese Schizophrenia Sib-pair Linkage Group (JSSLG): "Initial genome-wide scan for linkage with schizophrenia in the Japanese Schizophrenia Sib-pair Linkage Group (JSSLG) families"Am J Med Genet. 120B. 22-28 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 今村明, 秋月誠一, 橋田あおい, 藤丸浩輔, 辻由高宏, 林田雅希, 岡崎祐士: "双生児・家系(同胞)研究によるパニック障害の成因についての検討"臨床精神医学. 32. 1349-1352 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 今村明, 岡崎祐士: "精神分裂病の病態の変化〜最近の知見〜"医薬ジャーナル. 38.3. 983-986 (2002)

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      「研究成果報告書概要(和文)」より
  • [Publications] Matsumoto S., Sasaki T., Imamura A., et al.: "HLA classI distribution in Japanese patients with schizophrenia"Am J Med Genet. 114. 42-45 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Fujimaru K., Imamura A., Tsujita T., et al.: "Minor Physical Anomalies in Japanese Patisents with Schizophrenia."Acta Med.Nagasaki. 47. 133-137 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Imamura A..Tsujita T., Kayashima T., et al.: "Lack of association between the hKCa3 gene and the Japanese schizophrenia patients"Psychiatric Genetics. 11. 227-229 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsumoto S., Sasaki T., Imamura A., Matsuo K., Kayashima T., Hashida A., Ono S., Tsujita T., Matsumto S., Nakane Y., Tokunaga K., Okazaki Y.: "HLA classl distribution in Japanese patients with schizopherenia."Am J Med Genet. 114. 42-45 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujimaru K., Imamura A., Tsujita T., Uraguchi M., Hashida A., Mori T., Matsumoto S., Matsumoto S., Okazaki Y., Nakane Y.: "Minor Physical Anomalies in Japanese Patisents with Schizophrenia."Acta Mead Nagasaki. 47. 133-137 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Imamura A., Tsujita T., Kayashima T., Oda R., Kikuchi T., Hayashida M.,, Hamada A., Fujimaru K., Matsumoto S., Hashida A., Nakane Y., Okazaki Y.: "Lack of association between the hKCa3 gene and the Japanese schizophrenia patients."Psychiatric Genetics. 11. 227-229 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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