Study for a new measurement for the mammalian sperm oocyte-activation ability

2014 Fiscal Year Final Research Report

• Project/Area Number: 24592441
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Urology
• Research Institution: Chiba University
• Principal Investigator: ITO Chizuru 千葉大学, 医学(系)研究科(研究院), 講師 (80347054)
• Co-Investigator(Kenkyū-buntansha): TOSHIMORI Kiyotaka 千葉大学, 大学院医学研究院, 教授 (20094097)
• Co-Investigator(Renkei-kenkyūsha): MAEKAWA Mamiko 千葉大学, 大学院医学研究院, 助教 (20181571) ; YAMATOYA Kenji 千葉大学, 大学院医学研究院, 日本学術振興会特別研究員(PD) (80447309) ; KAMIMURA Kyouko 千葉大学, 大学院医学研究院, 技術専門職員 (20422264) ; MUTOH Tohru 千葉大学, 大学院医学研究院, 技術専門職員 (30422265) ; TOYAMA Yoshirou 千葉大学, 大学院医学研究院, 講師 (70009637)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 精子 / 核周囲物質 / 中心体関連タンパク質 / 卵活性化 / Equatorin / ODF2 / MN13 / 不妊症

Outline of Final Research Achievements

For the assessment of sperm oocyte-activation ability, we analyzed an acrosomal and perinuclear theca (PT)-related protein Equatorin and a centrosome scaffold component ODF2 using transgenic mice. We clarified the expression, localization and translocation route of Equatorin and ODF2c during the spermatogenesis and the fate of them in the fertilization process. We also showed that the distribution of Equatorin and PT substance MN13 in the sperm reflected the sperm fertilization ability by comparing sperm of infertile patients to those of fertile volunteers having children.

Free Research Field

生殖生物医学