Regulatory Mechanism of Sperm Function in Female Reproductive Tract

2008 Fiscal Year Final Research Report

• Project/Area Number: 18208029
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied molecular and cellular biology
• Research Institution: University of Tsukuba
• Principal Investigator: BABA Tadashi University of Tsukuba, 大学院・生命環境科学研究科, 教授 (40165056)
• Co-Investigator(Kenkyū-buntansha): NAKANISHI Tomoko 筑波大学, 大学院・生命環境科学研究科, 助教 (10344863)
• Project Period (FY): 2006 – 2008
• Keywords: 受精 / 子宮 / 輸卵管 / 精子機能 / マウス

Research Abstract

精子が雌性生殖器内で子宮から輸卵管へ移動し、卵管膨大部で卵子と融合するまでの過程で起こるさまざまな仕組みを明らかにするために研究を行った。精子セリンプロテアーゼPRSS21の欠損マウス精子を調べ、子宮や卵管分泌液中には精子の受精能を賦与する因子が存在することを発見した。また、PRSS21が透明帯上での精子アクロソーム反応で重要な役割を果たしていることも明確にした。さらに、精子ヒアルロニダーゼHYAL5 SPAM1の欠損マウス精子を解析し、受精にはヒアルロニダーゼが必須ではないことを証明し、卵子卵丘細胞複合体に精子排除機構があることを提唱した。

Research Products

• [Journal Article] Functional roles of mouse sperm hyaluronidases, HYAL5 and SPAM1, in fertilization (2009)
  • Author(s): Kimura, M., Kim, E., Kang, W., Yamashita, M., Saigo, M., Yamazaki, T., Nakanishi, T., Kashiwabara, S., Baba, T.
  • Journal Title: Biol.Reprod. 81 Pages: 939-947
  • Peer Reviewed
• [Journal Article] Reduced fertility of mouse epididymal sperm lacking Prss21/Tesp5 is rescued by sperm exposure to uterine microenvironment (2008)
  • Author(s): Yamashita, M., Honda, A., Ogura, A., Kashiwabara, S., Fukami, K., Baba, T.
  • Journal Title: Genes Cells 13 Pages: 1001-1013
  • Peer Reviewed
• [Journal Article] Sperm penetration through cumulus mass and zona pellucida (2008)
  • Author(s): Kim, E., Yamashita, M., Kimura, M., Honda, A., Kashiwabara, S., Baba, T.
  • Journal Title: Int.J.Dev.Biol. 52 Pages: 677-682
  • Peer Reviewed
• [Journal Article] Acrosome reaction of mouse epididymal sperm on oocyte zona pellucida (2007)
  • Author(s): Yamashita, M., Yamagata, K., Tsumura, K., Nakanishi, T., Baba, T.
  • Journal Title: J.Reprod.Dev. 53 Pages: 255-262
  • Peer Reviewed
• [Journal Article] Mouse sperm lacking ADAM1b/ADAM2 fertilin can fuse with the egg plasma membrane and effect fertilization (2006)
  • Author(s): Kim, E., Yamashita, M., Nakanishi, T., Park, K. -E., Kimura, M., Kashiwabara, S., Baba, T.
  • Journal Title: J.Biol.Chem. 281 Pages: 5634-5639
  • Peer Reviewed
• [Presentation] Role of hyaluronidase in sperm penetration through cumulus matrix (2009)
  • Author(s): Baba, T.
  • Organizer: 20^<th> International Symposium on Glycoconjugates
  • Place of Presentation: Puerto Rico
  • Year and Date: 20091129-20091204
• [Presentation] 子宮内因子による受精能回復機構の解析 (2008)
  • Author(s): 山下美鈴, 河野菜摘子, 康宇鎭, 柏原真一, 馬場忠
  • Organizer: 第31回日本分子生物学会年会, 第81回日本生化学会大会合同大会
  • Place of Presentation: 神戸
  • Year and Date: 20081209-20081212
• [Presentation] Mouse sperm lacking serine protease Prss21/Tesp5 barely undergo the zona pellucida-induced acrosome reaction, but do fertilize the egg (2008)
  • Author(s): Yamashita, M., Honda, A., Ogura, A., Kashiwabara, SI., Fukami, K., Baba, T.
  • Organizer: World Congress on Reproductive Biology
  • Place of Presentation: Hawaii (USA)
  • Year and Date: 20080524-20080525
• [Presentation] Functional defects of Tesp5-deficient mouse sperm in fertilization in vitro are restored by sperm transit through the uterus (2007)
  • Author(s): Baba, T.
  • Organizer: Gordon Research Conferences
  • Place of Presentation: New Hampshire (USA)
  • Year and Date: 20070715-20070720
• [Presentation] Role of testicular serine protease TESP5 in sperm fertilization (2006)
  • Author(s): Yamashita, M., Honda, A., Ogura,A., Baba, T.
  • Organizer: International Symposium on Spermatology
  • Place of Presentation: Madrid (Spain)
  • Year and Date: 20060917-20060922
• [Remarks] ホームページ等
  • URL: http://www.acroman.org/