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Cohesin protein-related age-related changes and the safety of oocyte freezing

Research Project

Project/Area Number 16K20170
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Obstetrics and gynecology
Research InstitutionAkita University

Principal Investigator

Hiromitsu Shirasawa  秋田大学, 医学系研究科, 助教 (60598019)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords体外成熟培養 / 単為発生 / タイムラプスイメージング / 次世代シーケンサー / 異数性 / コヒーシン蛋白 / 卵子凍結 / 次世代シーケンサ / タイムラプス / 胚盤胞 / 栄養外胚葉 / 内部細胞塊 / 未成熟卵子 / fertility preservation / 細胞骨格 / 卵子老化 / 加齢性変化 / コヒーシン / 染色体分離
Outline of Final Research Achievements

In the present study, immature oocytes were mainly recovered from non-stimulated resected ovaries and observed under in vitro maturation culture and time lapse of the parthenogenetic activation process. For immature oocyte retrieval, we used a unique method of open and laparoscopic retrieval in endometrioid adenocarcinoma patients with resections of ovaries. The collected immature oocytes were cultured for in vitro maturation, and the results of in vitro maturation culture with commercial medium were compared with those of the previous hand-made culture medium. For mature oocytes, we observed the parthenogenetic activation process in detail and clarified the relationship between the timing of first polar body release and subsequent parthenogenetic activation process performance. In addition, egg freezing and thawing were performed in the parthenogenetic activation process, followed by aneuploidy evaluation using a next-generation sequencer to observe the safety.

Academic Significance and Societal Importance of the Research Achievements

本研究成果によって各年齢層における体外成熟培養後の単為発生能および卵子凍結安全性に関する評価が、染色体異数性およびタイムラプスイメージングによる動的挙動を踏まえて施行することが可能となった。これらの知見はヒト単為発生由来胚盤胞作成および効率的な多能幹細胞作成プロセスにも寄与する所見であり、その意義は大きいと考える。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (19 results)

All 2019 2018 2017 2016

All Journal Article (8 results) (of which Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (11 results)

  • [Journal Article] The timing of the release of the first polar body predicts the cleavage rate after parthenogenetic activation for human oocytes obtained by in vitro maturation2019

    • Author(s)
      Hiromitsu Shirasawa, Yukiyo Kumazawa, Wataru Sato, Kazumasa Takahashi, Yukihiro Terada
    • Journal Title

      Fertility and Sterility

      Volume: 112 Issue: 3 Pages: e142-e142

    • DOI

      10.1016/j.fertnstert.2019.07.491

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Oocyte collection and in vitro maturation after train transportation of human follicular fluid aspirated from resected non‐stimulated ovaries of patients with endometrial adenocarcinoma2019

    • Author(s)
      Shirasawa Hiromitsu、Ono Natsuki、Kumazawa Yukiyo、Sato Wataru、Sato Naoki、Ihara Motomasa、Yaegashi Nobuo、Terada Yukihiro
    • Journal Title

      Reproductive Medicine and Biology

      Volume: 18 Issue: 2 Pages: 180-189

    • DOI

      10.1002/rmb2.12265

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Human frozen-thawed blastocyst morphokinetics observed using time-lapse cinematography reflects the number of trophectoderm cells2019

    • Author(s)
      Iwasawa Takuya、Takahashi Kazumasa、Goto Mayumi、Anzai Mibuki、Shirasawa Hiromitsu、Sato Wataru、Kumazawa Yukiyo、Terada Yukihiro
    • Journal Title

      PLOS ONE

      Volume: 14 Issue: 1 Pages: e0210992-e0210992

    • DOI

      10.1371/journal.pone.0210992

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 若手の最新研究紹介コーナー ヒト卵子凍結におけるコヒーシン蛋白関連の加齢性変化と,卵子凍結安全性に関する検討2018

    • Author(s)
      白澤弘光
    • Journal Title

      産科と婦人科

      Volume: 8 Pages: 970-972

    • Related Report
      2018 Research-status Report
  • [Journal Article] In vitro maturation of human immature oocytes for fertility preservation and research material2017

    • Author(s)
      Shirasawa Hiromitsu、Terada Yukihiro
    • Journal Title

      Reproductive Medicine and Biology

      Volume: 16 Issue: 3 Pages: 258-267

    • DOI

      10.1002/rmb2.12042

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Food intake affects sperm-egg fusion through the GIP/PSG17 axis in mice.2017

    • Author(s)
      Tatsunori Shimizu, Takehiro Sato, Katsushi Tsukiyama, Hiroki Fujita, Shunsuke Kato, Manabu Hoizumi, Hiromitsu Shirasawa, Takuma Narita, Yukihiro Terada, Yutaka Seino, Yoichiro Yamada
    • Journal Title

      Endocrinology

      Volume: - Issue: 7 Pages: 2134-2144

    • DOI

      10.1210/en.2016-1861

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The location of “8”-shaped hatching influences inner cell mass formation in mouse blastocysts.2017

    • Author(s)
      Yohei Onodera, Kazumasa Takahashi, Mayumi Goto, Mibuki Anzai, Natsuki Ono, Hiromitsu Shirasawa, Wataru Sato, Hiroshi Miura, Naoki Sato, Akira Sato, Yukiyo Kumazawa, Yukihiro Terada
    • Journal Title

      PLoS ONE

      Volume: 12 Issue: 4 Pages: e0175150-e0175150

    • DOI

      10.1371/journal.pone.0175150

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vitro maturation and cryopreservation of oocytes retrieved from intra-operative aspiration during second enucleation for ovarian tumor: a case report.2016

    • Author(s)
      Shirasawa H,Kumazawa Y,Sato W,Ono N,Terada Y
    • Journal Title

      Gynecologic Oncology Reports,

      Volume: 19 Pages: 1-4

    • DOI

      10.1016/j.gore.2016.11.009

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Time lapse imaging study of relatinship between the timing of the first polar body release after in vitro maturaion for non-stimulated human oocytes and the parthenogenetic process2019

    • Author(s)
      Hiromitsu Shirasawa
    • Organizer
      第71回日本産科婦人科学会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 形態的評価を考慮した、当院における40歳以上の患者に対する移植個数の検討2018

    • Author(s)
      白澤弘光,熊澤由紀代,佐藤亘,高須賀緑,金森恭子,兒玉英也,寺田幸弘
    • Organizer
      第70回日本産科婦人科学会学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 妊孕性温存を目的とする術中卵子回収・IVM・卵子凍結における、極体放出過程のタイムラプス観察意義2018

    • Author(s)
      白澤 弘光・熊澤 由紀代・佐藤 亘・高橋 和政・安西 実武貴・吉川 諒子・岩澤 卓也・寺田 幸弘
    • Organizer
      第59回日本卵子学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] ヒト未成熟卵子に対するIVM後の第1極体放出のタイミングに着目した,単為発生過程のタイムラプス解析2018

    • Author(s)
      白澤弘光,熊澤由紀代,佐藤亘,岩澤卓也,高橋和政,安西実武貴,寺田幸弘
    • Organizer
      第63回日本生殖医学会学術講演会・総会
    • Related Report
      2018 Research-status Report
  • [Presentation] In vitro maturation of immature human oocytes retrieved from non-stimulated ovaries resected from patients with gynecologic cancer and from intraoperative non-stimulated ovaries in patients undergoing surgery for non-cancer indications2017

    • Author(s)
      Hiromitsu Shirasawa,Yukiyo Kumazawa,Wataru Sato,Natsuki Ono, Hideya Kodama,Yukihiro Terada
    • Organizer
      第69回日本産科婦人科学会学術講演会
    • Place of Presentation
      広島グリーンアリーナ
    • Year and Date
      2017-04-15
    • Related Report
      2016 Research-status Report
  • [Presentation] In vitro maturation of immature human oocytes retrieved from non-stimulated ovaries resected from patients with gynecologic cancer and from intraoperative non-stimulated ovaries in patients undergoing surgery for non-cancer indications2017

    • Author(s)
      Hiromitsu Shirasawa,
    • Organizer
      第69回日本産科婦人科学会学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 非刺激下摘出卵巣から得たヒト未成熟卵子に対する,IVM 過程のタイムラプス解析2017

    • Author(s)
      白澤弘光・熊澤由紀代・佐藤亘・尾野夏紀・安西実武貴・高橋和政・寺田幸弘
    • Organizer
      第58回日本卵子学会学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 腹腔鏡下手術後に卵巣境界悪性腫瘍の診断に至り、根治術時に術中卵子回収を施行した1例2017

    • Author(s)
      熊澤由紀代、白澤弘光、佐藤亘、清水大、寺田幸弘
    • Organizer
      第57回日本産科婦人科内視鏡学会学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 地方における高齢女性とART:現状と今後の課題2017

    • Author(s)
      白澤弘光
    • Organizer
      第62回日本生殖医学会学術講演会・総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 片側のみ卵巣が残存し核出既往のある患者において,非卵巣刺激下に行う手術時の未成熟卵子回収個数をいかに予測するか2016

    • Author(s)
      白澤弘光,尾野夏紀,佐藤 亘,熊澤由紀代,寺田幸弘
    • Organizer
      第61回日本生殖医学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-11-07
    • Related Report
      2016 Research-status Report
  • [Presentation] ART施行中の患者に対する腹腔鏡下・開腹下筋腫核出術に関する成績の比較検討2016

    • Author(s)
      白澤弘光,熊澤由紀代,尾野夏紀,佐藤 亘,兒玉英也,寺田幸弘
    • Organizer
      第54回東北生殖医学会学術講演会
    • Place of Presentation
      岩手医科大学創立60周年記念館
    • Year and Date
      2016-10-17
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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