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Studies on the mechanism of flagellar movement using mammalian seminal plasma motility inhibitor protein.

Research Project

Project/Area Number 63540567
Research Category

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

Allocation TypeSingle-year Grants
Research Field 動物発生・生理学
Research InstitutionUniversity of Tokyo

Principal Investigator

OKUNO Makoto  University of Tokyo, College of Arts and Sciences, Assistant Professor, 教養学部, 助教授 (40143325)

Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsSPMI (Seminal plasma motility inhibitor) / Flagellar movement / Spermatozoa / Microtubule / Viscoelasticity / Bend / Poly-L-lysine / 滑り運動 / 顕微注射 / 哺乳類精奨蛋白 / 鞭毛 / 鞭毛屈曲伝播 / 滑り出し / ダブレット微小菅 / 屈曲角 / 曲率 / ポリアミノ酸 / ATPase
Research Abstract

Mammalian seminal plasma contains a inhibitor to immobilize the demembranated flagellar movement. The inhibitor (SPMI, seminal plasma motility inhibitor) was prepared from the boar. The purified SPMI was consisted with three subunits, 14, 16 and 18 KD in SDSPAGE. SPMI inhibited not only mammalian but also fish and sea urchin sperm flagellar movement so that it seemed to inhibit the flagellar movement universally. When the demembranated sea urchin sperm flagella were exposed to SPMI the amplitude of bend decreased apparently, followed by irregular beat and then, stopped. The sliding disintegration of doublet microtubules were inhibited by SPMI, however, the end of flagella split out to individual microtubules and the bends were relaxed. ATPase activity was partially inhibited by SPMI. It was assumed that the amplitude of flagellar bend was closely related to the viscoelasticity in flagellar axoneme and SPMI increased it. It was also observed that the very slow bend propagation occurred in the presence of high concentration of SPMI. In that case, some wave parameters were preserved during the bend propagation, suggesting that these parameters should be very important to understanding the control mechanism of flagellar movement.
Effects of poly amino acid on flagellar movement was studied. Only the basic and high molecular weight (15 KD or more) poly amino acids such as poly-L-lysine (PLL) inhibited the flagellar movement. The bend amplitude rather than the beat frequency was inhibited by PLL. Bends were relaxed even in the presence of high concentration of PLL. These results suggested that the inhibition manner of PLL was similar to that of SPMI in some parts. Therefore, it was likely that PLL increased the inter microtubule viscoelasticity.
The microinjection of SPMI into the sea urchin blastomere was carried out. SPMI provided some inhibitory effects in a certain period prior to the cell division.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Okuno,M.: "Effects of the sperm extract on the demembranated fish sperm flagelar movement." Energy Transduction in ATPase. 212-215 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno,M.: "Propagation of the pseudo rigor bend of the sperm flagella in the presence of a new dynein ATPase inhibitor." Cell Motility and Cytoskeleton. 11. 215 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno,M.& Morisawa,M.: "Effects of calcium on motility of rainbow trout sperm flagella demembranated with Triton X-100." Cell Motility and Cytoskeleton. 14. 194-200 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno,M.& Morisawa,M.: "Enzymatic activation of the initiation mechanism of flagellar movement in salmonid fish spermatozoa demembranated with Triton X100." Cell Motility and Cytoskeleton.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Iwamoto,T.,Dickson,J.,Lamirande,E.,Okuno,M.,Mohri,H. & Gagnon,C.: "Purification and characterization of a sperm motility inhibitor from seminal plasma."

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno,M., Nakakuki,H.,Inaba,K.& Gagnon,C.: "Propagation of the pseudo rigor bend in the presence of a new inhibitor of flagellar movement."

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno, M.: "Effects of the sperm extract on the demebranated fish sperm flagellar movement." Energy Transduction in ATPase, pp212-215, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno, M.: "Propagation of the pseudo rigor bend of the sperm flagella in the presence of a new dynein ATPase inhibitor." Cell Motility and Cytoskeleton, 11, 215, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno, M. and Morisawa, M.: "Effects of calcium on motility of rainbow trout sperm flagella demembranated with Triton X-100." Cell Motility and Cytoskeleton, 14, 194-200, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno, M. and Morisawa, M.: "Enzymatic activation of the initiation mechanism of flagellar movement in salmonid fish spermatozoa demembranated with Triton X-100." Cell Motility and Cytoskeleton.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Iwamoto, T., Dickson, J., Lamirande, E., Okuno, M., Mohri, H. and Gagnon, C.: "Purification and characterization of a sperm motility inhibitor from seminal plasma."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno, M., Nakakuki, H., Inaba, K. and Gagnon, C.: "Propagation of the pseudo rigor bend in the presence of a new inhibitor of flagellar movement."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Okuno,M.& Morisawa,M.: "Effects of calcium on motility of rainbow trout sperm flagella demembranated with Triton X-100." Cell Motility and Cytoskeleton. 14. 194-200 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Okuno,M.,Nakakuki,H.,Inaba,K.& Gagnon,C.: "Propagation of the pseudo rigor bend in the presence of a new dynein ATPase inhibitor." in preparation.

    • Related Report
      1989 Annual Research Report
  • [Publications] Iwamoto,T.,Dickson,J.,Lamirande,E.,Okuno,M.,Mohri,H.& Gagnon,C.: "Purification and characterization of a sperm motility inhibitor from seminal plasma." in preparation.

    • Related Report
      1989 Annual Research Report
  • [Publications] Okuno,M.: "Effects of poly amino acids on the demembranated flagellar movement" in preparation.

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Okuno,;M.Morisawa: Cell Motil.and Cytoskeleton.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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