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Analysis of lipid droplets in mouse and human fertilized eggs, and developing new culture medium by optimization of fatty acid composition.

Research Project

Project/Area Number 19K24046
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0906:Surgery related to the biological and sensory functions and related fields
Research InstitutionTokyo Medical and Dental University

Principal Investigator

TATSUMI TAKAYUKI  東京医科歯科大学, 大学院医歯学総合研究科, 寄附講座助教 (30846035)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords生殖医療 / 脂肪滴 / 卵子 / タイムラプス / マウス受精卵 / オートファジー
Outline of Research at the Start

体外受精においてより高い妊娠率を得るためには、よりよい胚を見極めること、よい培養液を作成することが重要となります。今回私たちは①ヒト受精卵のタイムラプス画像における脂肪滴の動態の解析を行うことにより、侵襲のない新しい体外受精における受精卵の品質評価法を作成すること、②私たちが開発した、オートファジーを強制的に誘導して脂肪滴を分解する手法を用いて、マウス胚に含まれる脂肪酸を分析することで、より受精卵内の状態を反映した質の高い培養液の作成を目指します。

Outline of Final Research Achievements

For the purpose of clarifying the dynamics of lipid droplets and the effects of fatty acids, we experienced a human case that causes abnormal sperm motility and causes fertility disorders. We conducted the analysis, focused on the analysis of embryos using a time-lapse device, and reported to Translational Andrology and Urology.
We analyzed big data of 320,000 Japanese women and 6 million menstrual cycle recorded through the women's health information service "Luna Luna", investigated the relationship between menstrual cycle, basal body temperature and age, and season, and reported it to Obstetrics and Gynecology.

Academic Significance and Societal Importance of the Research Achievements

胚の体外での培養環境は卵管や子宮の中の環境には及ばないと言われており、培養環境の改善のためのbreakthroughが待たれている。さらに、最近では胎児期の子宮内での環境がその後の発育に影響することがわかってきている。今回の我々の研究を通じて、胚の培養環境や着床後早期の胚を取り巻く環境がヒトのその後の発育に及ぼす影響が示唆された。ここで培養液中の脂肪滴・脂肪酸に関する研究は今までほとんど行われてこなかった。脂肪酸は細胞膜の構成成分となるため、細胞分裂・胚発生に必須である。今後はとくに我々が注目している脂肪滴の動態・脂肪酸の及ぼす影響を明らかにしていきたい。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Impact of short-term high-fat feeding on lipid droplet content in mouse oocytes2021

    • Author(s)
      AIZAWA Ryutaro、IBAYASHI Megumi、HATAKEYAMA Tomomi、TATSUMI Takayuki、TSUKAMOTO Satoshi
    • Journal Title

      Journal of Reproduction and Development

      Volume: 67 Issue: 1 Pages: 73-77

    • DOI

      10.1262/jrd.2020-094

    • NAID

      130007986315

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] New device for sperm preparation involving migration-gravity sedimentation without centrifugation compared with density-gradient centrifugation for normozoospermic intrauterine insemination2020

    • Author(s)
      Tatsumi Kenichi、Tatsumi Takayuki、Uchida Takafumi、Saito Kazuki、Saito Hidekazu
    • Journal Title

      F&S Reports

      Volume: 1 Issue: 2 Pages: 106-112

    • DOI

      10.1016/j.xfre.2020.06.003

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Age-Dependent and Seasonal Changes in Menstrual Cycle Length and Body Temperature Based on Big Data2020

    • Author(s)
      Tatsumi Takayuki、Sampei Makiko、Saito Kazuki、Honda Yuka、Okazaki Yuka、Arata Naoko、Narumi Kanako、Morisaki Naho、Ishikawa Tomonori、Narumi Satoshi
    • Journal Title

      Obstetrics & Gynecology

      Volume: 136 Issue: 4 Pages: 666-674

    • DOI

      10.1097/aog.0000000000003910

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Obstetric management of a patient with Andersen?Tawil syndrome: A case report2020

    • Author(s)
      Inagaki Mai、Tatsumi Takayuki、Yomogita Hiroshi、Hirose Asuka、Kubo Takuyuki、Sekiguchi Masaki、Miyasaka Naoyuki
    • Journal Title

      Journal of Obstetrics and Gynaecology Research

      Volume: 47 Issue: 1 Pages: 446-451

    • DOI

      10.1111/jog.14553

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Successful pregnancy and delivery achieved following intracytoplasmic sperm injection using teratozoospermic sperm exhibiting marked dysplasia of the fibrous sheath: a case report2020

    • Author(s)
      Masato Saito, Takayuki Tatsumi, Takashi Nakasuji, Megumi Ibayashi, Tatsuya Harada, Tohru Mutoh, Chizuru Ito, Akira Komiya, Kenichiro Hiraoka1, Kiyotaka Kawai
    • Journal Title

      Translational Andrology and Urology

      Volume: 9 Issue: 2 Pages: 800-806

    • DOI

      10.21037/tau.2019.12.14

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Obstetrical management of a patient with Andersen-Tawil syndrome.2020

    • Author(s)
      Mai Inagaki, Takayuki Tatsumi, Hiroshi Yomogita, Asuka Hirose, Masaki Sekiguchi, Naoyuki Miyasaka.
    • Organizer
      第72回 日本産科婦人科学会 学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 母児に表現度の差異がみられたCurrarino症候群の1例.2020

    • Author(s)
      辰巳嵩征, 関口将軌, 久保拓之, 廣瀬明日香, 野口優輔, 四手井綱則, 森丘千夏子, 滝敦子, 伊藤佳史, 荻野恵, 岡本健太郎, 髙橋沙矢子, 江花有亮, 江川真希子, 吉田雅幸, 宮坂尚幸.
    • Organizer
      第65回 日本人類遺伝学会 大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ビッグデータ解析に基づく 日本人女性の月経周期・基礎体温 についての最新の知見.2020

    • Author(s)
      辰巳 嵩征, 齊藤 和毅, 石川 智則, 宮坂 尚幸.
    • Organizer
      第65回 日本生殖医学会 学術講演会・総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NORMAL LIVE BIRTH FOLLOWING ICSI BY USING TERATOZOOSPERMIC SPERM WITH TAIL MALFORMATION THAT BECOMING THINNER FROM THE MIDDLE TO END OF THE SPERM’S TAIL2019

    • Author(s)
      Masato Saito, Takayuki Tatsumi, Takashi Nakasuji, Megumi Ibayashi, Tatsuya Harada, Kenichiro Hiraoka, Kiyotaka Kawai
    • Organizer
      The 9th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 尾部構造異常を伴う精子を用いて顕微授精を行い 正常分娩に至った1例2019

    • Author(s)
      齋藤雅人・辰巳嵩征・中筋貴史・伊林恵美・原田竜也・ 武藤透・伊藤千鶴・小宮顕・平岡謙一郎・川井清考
    • Organizer
      第37回 日本受精着床学会総会・学術講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2022-01-27  

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