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Study of the expression and function of cyclin-dependent kinases in the nervous system

Research Project

Project/Area Number 08680834
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Neurochemistry/Neuropharmacology
Research InstitutionChiba University

Principal Investigator

INO Hidetoshi  Chiba University School of Medicine, Assistant, 医学部, 助手 (80223246)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1996: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsCYCLIN-DEPENDENT KINASE / CDK5 / PCNA / NERVOUS SYSTEM / NEURON / GLIA / IMMUNOHISTOCHEMISTRY / CELL CYCLE / サイクリンE / CDK / サイクリン
Research Abstract

Cyclin-dependent kinase 5 (CDK5) is one of the cyclin-dependent kinases, and is expressed in mature neurons. CDK5 has been postulated to be a neurofilament or tau protein kinase, because it phosphorylates neurofilaments and tau protein in vitro. It has been reported that CDK5 was immunohistochemically detected only in axons of neurons. We here report the immunohistochemical study of CDK5 using two distinct antibodies, one recognizing the N-terminal of CDK5 and the other the C-terminal. Immunoreactivity of CDK5 was found not only in axons, but also intensively in nuclei, though not in nucleoli, of neurons in the mouse central and peripheral nervous systems. The nuclear CDK5 possibly has a physiological function distinct from the neurofilament or tau protein kinase.
Proliferating cell nuclear antigen (PCNA), the DNA polymerase auxiliary factor, is required for DNA replication and repair ; thus, PCNA is abundantly expressed in proliferating cells. Interestingly, PCNA mRNA was also detected in adult mouse brain by northern blot analysis. Two monoclonal antibodies against PCNA were used for western blot analysis, and one of them (clone PC10) detected a band in mouse brain extract, but the other (clone 19F4) did not. Immunohisto-chemistry of PCNA was also performed using these antibodies, and immunostaining was found only with PC10 in nuclei of cells, neurons and glia, over a wide area of the adult mouse central and peripheral nervous systems. On the other hand, nuclei of cells in the subventricular zone (SVZ) were stained with both PC10 and 19F4. These data suggest that the PCNA-like protein in mouse brain except for the SVZ is not PCNA but a structurally related PCNA analogue. However, the possibility also exists that the wide-spread PC10-immunoreactivity is due to the modification of amino acid residues of PCNA,such as by the phosphorylation.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] H.Ino: "Intracellular localization of cyclin-dependent kinase 5(CK5) in mouse neuron:CDK5 is located in both nucleus and cytoplasm." Brain Res.732. 179-185 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Ishizuka: "Promoter region of the rat phosphoribosylpyrophosphate synthetase-associated protein 39." Biochim.Biophys.Acta. 1306. 34-37 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Suzuki: "UV-induced mutations affecting codon 12 of K-ras gene are suppressed by interferon-α in human RSa cells." Mutation Res.373. 251-256 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Ino and T.Chiba: "Intracellular localization of cyclin-dependent kinase 5 (CDK5) in mouse neuron : CDK5 is located in both nucleus and cytoplasm." Brain Res. 732. 179-185 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Ishizuka, K.Sawa, K.Kita, H.Ino, T.Sonoda, N.Suzuki and M.Tatibana: "Promoter region of the rat phosphoribosylpyrophosphate synthetase-associated protein 39." Biochim.Biophys.Acta.1306. 34-37 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Suzuki, H.Suzuki, T.Ishizuka, H.Yamamori and H.Ino: "UV-induced mutations affecting codon 12 of K-ras gene are suppressed by interferon-alpha in human RSa cells." Mutation Res.373. 251-256 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Ino: "Intracellular Jocalization of cyclin-dependent kinase 5(CDK5)in mouse neuron:CDK5 is located in both nucleus and cytoplasm." Brain Res.732. 179-185 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Ishizuka: "Promoter region of the rat phosphoribosylpyrophosphate synthetase-associated protein 39." Biochim.Biophys.Acta. 1306. 34-37 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Suzuki: "UV-induced mutations affecting codon 12 of K-ras gene are suppressed by interferon-α in human RSa cells." Mutation Res.373. 251-256 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Hidetosi Ino: "Intracellular localization of cyclin-dependent kinase5 (CDK5) in movse neuron : CDK5 is located in both nucleus and cytoplasm." Brain Research. 732. 179-185 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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