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1994 Fiscal Year Final Research Report Summary

Molecular Mechanism of Juvenile Hormone Action

Research Project

Project/Area Number 04454060
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 植物保護
Research InstitutionMIE UNIVERSITY

Principal Investigator

CHINZEI Yasuo  MIE UNIVERSITY,FACULTY of MEDICINE,PROFESSOR, 医学部, 教授 (60024709)

Co-Investigator(Kenkyū-buntansha) MIURA Ken  MIE UNIVERSITY,FACULTY of MEDICINE,ASSISTANT, 医学部, 助手 (60219582)
MATSUOKA Hiroyuki  MIE UNIVERSITY,FACULTY of MEDICINE,LECTURER, 医学部, 講師 (10173816)
ANDO Katsuhiko  MIE UNIVERSITY,FACULTY of MEDICINE,ASSOCIATE PROFESSOR, 医学部, 助教授 (90024710)
Project Period (FY) 1992 – 1994
KeywordsJUVENILE HORMONE / CYANOPROTEIN / ARYLPHORINE / STORAGE PROTEIN / GENE EXPRESSION / cDNA CLONING / GENE STRUCTURE / BEAN BUG
Research Abstract

Cyanoproteins of the bean bug, Riptortus clavatus, CP-1,2,3, and 4 are hexameric proteins composed of two different subunits, CPa and CPb. The cDNA libraries were constructed from poly (A) +RNA isolated from the fat body fromdiapause and diapause female adults. The cDNA clones encoding CPa and CPb were screened by using antisera against CPa and CPb, respectively. The nucleotide sequences of CPa and CPb cDNA inserts (a : 2217bp, b : 2163bp) predicted that CPa and CPb contain 693 and 686 residues, respectively. The identities at the level of amino acid sequence between the two CP subunits were calculated to be 68.0%. Homology search revealed that CPa and CPb were closely related to insect strage hexamers and arthropod hemocyanins. The author concluded that the hemocyanins of R.clavatus fall into the so-celled 'hexamerin' superfamily.
The expression of Cyanoprotein (CP) was studied at the level of mRNA in the bean bug, Riptortus clavatus. Total RNA was extracted from the fat body of 5th nymphal stages, reproductive females and males, and juvenile hormone (JH) treated diapause females and males. The RNA was analyzed by northern blot analysis using cDNAs of CPa and CPb subunits as probes. The RND was also analyzed by in vitro translation. In the nymphs, both mRNAs appeared first on day-2 and then increased. CPa mRNA decreased to the molt while large amounts of CPb mRNA still remained at the end of the stage. In the reproductive females CPa expression was first detected on day-3 after emergence, then increased onward while no CPa mRNA was detected in the molts. As for CPb, a only trace expression was observed in the reproductive bugs. In the JH treatment to the diapause females resulted in the sift of CP expression from CPb to CPa while the treatment supressed completely the expression of both CPa and CPb in the diapause males.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Yasuko Chinzei: "Ciyanoprotein:Developmental stage sex and diaparse dependent expression and synthesis regulation by juvenile hor move in the bean bug,Rhiptortus clavatus" Archiues Insert Biochemistry and Physiology. 20. 61-73 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hideharu Numata et al,: "Juvenile hormono I is the principal juvenile hormona in a hemipreain in sect,Rhiptortus clavatus" Experientia. 248. 606-610 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ken Miura et sl,: "Cyanoprotein syntheris depending on developmental stage,sex and diapause and the regulation by juvenile hormone in the bean bug,Riptortus clavatus" Dev.in Regulation of Insect Reproduction. 1. 63-68 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tetsuyo Shinoda et al,: "Juvenile hormone regulation of vifellogenis synthesis in the bean bug,Riptortus clavatus" Dev.in Regulation of Insect Reproduction. 1. 263-268 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tasuo Chinza et al,: "Changes in heuralyiph protein and their synthetic actinities during development and engorgement,and after juverrile hormone treatment" J.Inse ct Physiol.40. 491-499 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ken Miura: "Structural and functional studies on biliverdin arsocithe cyanoprotein fron the bean bug,riptortus clavatus." Zovlogical Science. 11. 537-545 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasuo Chinzei et al.: "Insect Juvenile Hormone Research" INRA Edition(Paris), 250 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Jun Kobayashi: "Animal Cell Technology" Kluwer Academic Publishers, 300 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasuo Chinzei et al.: "Cyanoprotein : Developmental satage, sex and diapause dependent expression and synthesis regulation by juvenile hormone in the beam bug" Riptortus clavatus. Archives Insect Biochemistry and Physiology. 20. 61-73 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideharu Numata et al.: "Juvenile hormone I is the principal juvenile hormone in a hemiputeran insect" Riptortus clavatus.Experientia. 48. 606-610 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ken Miura et al.: "Cyanoprotein synthesis depending on developmental stage, sex and diapause, and the regulation by juvenile hormone in the bean bug" Riptortus clavatus.Developmental Regulation of insect Reproduction (ed Benetova). 63-68 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tetsuro Shinoda et al.: "Juvenile hormone regulation of vitellogenin synthesis in the bean bug, Riptortus clavatus." Developmental Regulation of Insect Reproduction (ed Benetova). 263-268 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasuo Chinzei et al.: "Changes in hemolymph proteins and their synthetic activities during development and engorgement, and after juvenile hormone treatment." Journal of Insect Physsiology. 40. 491-499 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ken Miura et al.: "Structural and functional studies on biliverdin associated cyanoprotein from the bean bug, Riptortus clavatus." Zoological Science. 11. 537-545 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasuo Chinzei et al.: "Juvenile hormone regulation of cyanoprotein synthesis in the bean bug, Riptortus clavatus.In "Insect Juvenile Hormone Research : Fundamental and applied Approaches" (ed, by B.Mauchamp.F.Couillaud and J.C.Baehr)" INRA Editions, Paris.6. 207-218 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Jun Kobayashi et al.: "production of a transmission blocking vaccine candidate of rodent malaria Plasmodium berghei using a baculovirus expression vector system." Animal Cell Technology (ed., Kobayashi T). 41-45 (1994)

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

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Published: 1996-04-15  

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