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1997 Fiscal Year Final Research Report Summary

The study on orthodontic tooth movement and regulation of root resorption by Cathepsin L and Cathepsin L inhibitor.

Research Project

Project/Area Number 08672371
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 矯正・小児・社会系歯学
Research InstitutionTHE UNIVERSITY OF TOKUSHIMA

Principal Investigator

OHBA Tomoko  THE UNIVERSITY OF TOKUSHIMA,UNIVERSITY DENTAL HOSPITAL,RESEARCH ASSOCIATE, 歯学部・附属病院, 助手 (10274242)

Co-Investigator(Kenkyū-buntansha) MIKI Yoshiki  THE UNIVERSITY OF TOKUSHIMA,SCHOOL OF DENTISTRY,RESEARCH ASSOCIATE, 歯学部, 助手 (50294707)
OHBA Yasuo  THE UNIVERSITY OF TOKUSHIMA,SCHOOL OF DENTISTRY,RESEARCH ASSOCIATE, 歯学部, 助手 (40294706)
OKADA Kinya  THE UNIVERSITY OF TOKUSHIMA,SCHOOL OF DENTISTRY,RESEARCH ASSOCIATE, 歯学部, 助手 (60274239)
TANIMURA Ichirou  THE UNIVERSITY OF TOKUSHIMA,SCHOOL OF DENTISTRY,RESEARCH ASSOCIATE, 歯学部, 助手 (20253221)
TAKANO-YAMAMOTO Teruko  THE UNIVERSIT OF OKAYAMA,SCHOOL OF DENTISTRY,PROFESSOR, 歯学部, 教授 (00127250)
Project Period (FY) 1996 – 1997
KeywordsCATHEPSIN L / OSTEOCLAST / BONE RESORPTION / CATHEPSIN L INHIBITOR / EPOXYSUCCINYL PEPTIDE DERIVATIVES
Research Abstract

In this study we evaluated a series of new synthetic epoxysuccinyl peptide derivatives. Inhibitory effects of these compounds on purified cathepsin L,B,H and J were tested using peptide substrates in vitro and five selected compounds (CLIK-1,63,65,88 and 90) were demonstrated that they were potent inhibitors for cathepsin L.Then, pit formation assay was employed to comfirm inhibitory effects of five compounds on rat osteoclast-mediated bone resorption. CLIK-1 inhibited cathepsin L activity at a concentration of 10^<-6> M,whereas no inhibition of cathepsin B was shown, and at this concentration CLIK-1 significantly suppressed pit formation stimulated by parathyroid hormone. 10^<-7> M of CLIK-63 inhibited cathepsin L activity completely and suppressed pit formation, and remaining activities of cathepsin J was shown but did not inhibit cathepsins B and H at concentrations of 10^<-7> and 10^<-6> M,respectively. CLIK-65 reduced pit formation at concentration of 10^<-7> M at which cathepsin L was inhibited completely and cathepsin J was suppressed moderately, but cathepsin B and H activities were not affected. CLIK-88 and 90 suppressed pit formation at concentrations of 10^<-5> and 10^<-4> M,respectively. At these concentrations, CLIK-88 and 90 completely blocked cathepsin L activity showing no inhibion for cathepsins B and H and weak suppression of cathepsin J.These data indicate that inhibition of cathepsin L in osteoclasts resulted in reduction of osteoclastic bone resorption and inhibitors of cathepsin L are effective at reducing osteoclast-mediated bone resorption. We are going to investigate bone remodeling mechanisms in alveolar bone during orthodintic tooth movement and regulation of root resorption using these new synthetic inhibitors of cathepsin L.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] N.katsunuma, et al: "New drug design of cathepsin L specific inhibitors and their inhibitory effection bne resorption" The 12th FAOBMBS Symposium. 185 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasuo Ohba, Tomoko Ohba, et al: "Inhibitory mechanisns of H^+・ATPase inhibitor bafilomycin A_1 and carbonic anhydrase II inhibitor acetazolamide" FEBs Letteers. 387. 175-178 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大庭 康雄、大庭 知子、他: "液胞型H^+・ATPase阻害剤バフィロマイシンA_1、およびカーボニックアンヒドラーゼ阻害剤アセタゾラミドの破骨細胞内のカテプシンLに対する影響" 第56回 日本矯正歯科学会大会 抄録集. 134 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大庭 知子、大庭 康雄、他: "ラット軟骨におけるカテプシンLの免疫組織学的局在について" 第56回 日本矯正歯科学会大会 抄録集. 135 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.katsumuma, et al: "Molecular mechanisms of bone collagen degradation in bone resorption" Journal of Bone and Mineral Metabolism. 15. 1-8 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Katunuma, et al: "New drug design of cathepsin L specific inhibitors and their inhibitory effection bone resorption" The 12th FAOBMBS. Symposium. 185 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasuo Ohba, Tomoko Ohba, Koji Sumitani, Kahori Tagami-Kondoh, Kenji Hiura, Yoshiki Miki, Hisao Kakegawa, Teruko Takano-Yamamoto, Nobuhiko Katunuma: "Inhibitory mechanisms of H^+ -ATPase inhibitor bafilomycin A1 and carbonic anhydrase II inhibitor acetazolamide on experimental bone resorption" FEBS Letters. 387. 175-178 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasuo Ohba, Tomoko Ohba, Kunihiro Terai, Yoshiki Miki, Kenji Hiura, Koji Sumitani, Teruko Takano-Yamamoto: "Effects of vacuolar-type H^+ -ATPase inhibitor bafilomycin A1 and carbonic anhydrase inhibitor acetazolamide on cathepsin L in osteoclasts" The 56th Annual Meeting of Japan Orthodontic Society. 134 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomoko Ohba, Yasuo Ohba, Kenji Hiura, Teruko Takano-Yamamoto: "Immunocytochemical localization of cathepsin L in the rat cartilage" The 56th Annual Meeting of Japan Orthodontic Society. 135 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nobuhiko Katunuma, et al: "Molecular mechanisms of bone collagen degradation in bone resorption" Journal of Bone and Mineral Metabolism. 15. 1-8 (1997)

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

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Published: 1999-03-16  

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