• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Origin of anterior-posterior axis in the mouse embryos

Research Project

Project/Area Number 19K23756
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0702:Biology at cellular to organismal levels, and related fields
Research InstitutionThe University of Tokushima

Principal Investigator

TAKAOKA Katsuyoshi  徳島大学, 先端酵素学研究所, 准教授 (90551044)

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マウス胚 / 前後軸 / 体軸 / 着床 / 非対称性 / 不妊治療 / 子宮 / 老化 / 初期流産 / 加齢
Outline of Research at the Start

これまで「丸い哺乳類の受精卵がいつどのようにして非対称な形態を獲得するのだろうか?」という発生学の命題に対し、マウス胚の3つの体軸の中で最も早期に形成される前後軸の初期決定機構をさかのぼって解析することでアプローチしてきた。さらに、前後軸方向を決定する細胞群DVEの位置は受精後3.5日胚のNodal発現開始細胞によって決定され、少なくとも受精後3.5日胚は前後方向の基盤となる非対称な分子情報を獲得していることを明らかにした。本研究では、さらに遡って「Nodalが一部の細胞のみで発現するメカニズムを明らかにする」ことで、マウス胚の前後軸の起源の解明に迫る

Outline of Final Research Achievements

One fundamental question in developmental biology is how an initially round fertilized egg becomes an elaborately shaped embryo. In Drosophila, whose eggs are elliptical in shape, the anterior-posterior (A-P) axis is specified by asymmetrical distribution of maternal determinants. In mammals such as humans and mice. The A-P axis, the first axis established in mammals, is determined by distal visceral endoderm (DVE). How prospective DVE cells are selected in the embryo, however, has remained unclear. We showed that, in mouse embryos, the DVE is formed through a negative feedback by Lefty1 and Nodal.The DVE then drives the establishment of the A-P axis by migrating to the future anterior side. We made an hypothesis; The DVE cells that determines the anterior-posterior axis direction is produced by the Nodal signals of the ovary, uterus, and embryo acting as a spatiotemporal network, and maternal aging disrupts the patterning of the head-determining cell group AVE.

Academic Significance and Societal Importance of the Research Achievements

本研究は、前後軸の起源を明らかにするという、発生学の本質にアプローチする壮大な研究である。ショウジョウバエを含む多くの生物はすでに卵子の段階で分子レベルの非対称情報を獲得しており、それら分子レベルの非対称情報が後の体軸情報を提供する。それに対して、ヒトやマウスといった胎生動物がいつどのようにして体軸の基となる非対称な分子情報を獲得するのかは長らく不明であり、発生学の命題であった。本研究が完了した場合、発生学の命題が明らかになり、マウス胚発生学の歴史の中で重要なマイルストーンとなる。

Report

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

    (10 results)

All 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (1 results) Book (2 results)

  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University Hospital Munster(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] CFAP53 regulates mammalian cilia-type motility patterns through differential localization and recruitment of axonemal dynein components.2020

    • Author(s)
      Ide T, Twan WK, Lu H, Ikawa Y, Lim LX, Henninger N, Nishimura H, Takaoka K, Narasimhan V, Yan X, Shiratori H, Roy S, Hamada H.
    • Journal Title

      PLoS Genet.

      Volume: 16(12) Issue: 12 Pages: e1009232-e1009232

    • DOI

      10.1371/journal.pgen.1009232

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CFAP45 deficiency causes situs abnormalities and asthenospermia by disrupting an axonemal adenine nucleotide homeostasis module2020

    • Author(s)
      Gerard W. Dougherty, Katsutoshi Mizuno, 他25名, Ide T, Twan WK, 他9名, Aviram M, Kaiser T, Memari Y, Dzeja PP, Dworniczak B, Ueffing M, Roepman R, Bartscherer K, Katsanis N, Davis EE, Amirav I, Hamada H, Omran H.
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 5520-5520

    • DOI

      10.1038/s41467-020-19113-0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of Ca2+ transients at the node of the mouse embryo in breaking of left-right symmetry2020

    • Author(s)
      Mizuno Katsutoshi、Shiozawa Kei、Katoh Takanobu A.、Minegishi Katsura、Ide Takahiro、Ikawa Yayoi、Nishimura Hiromi、Takaoka Katsuyoshi、Itabashi Takeshi、Iwane Atsuko H.、Nakai Junichi、Shiratori Hidetaka、Hamada Hiroshi
    • Journal Title

      Science Advances

      Volume: 6 Issue: 30

    • DOI

      10.1126/sciadv.aba1195

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rab7-Mediated Endocytosis Establishes Patterning of Wnt Activity through Inactivation of Dkk Antagonism2020

    • Author(s)
      Kawamura Nobuyuki、Takaoka Katsuyoshi、Hamada Hiroshi、Hadjantonakis Anna-Katerina、Sun-Wada Ge-Hong、Wada Yoh
    • Journal Title

      Cell Reports

      Volume: 31 Issue: 10 Pages: 107733-107733

    • DOI

      10.1016/j.celrep.2020.107733

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ciliogenesis‐coupled accumulation of IFT‐B proteins in a novel cytoplasmic compartment2019

    • Author(s)
      Lamri Lynda、Twan Wang Kyaw、Katoh Takanobu A.、Botilde Yanick、Takaoka Katsuyoshi、Ikawa Yayoi、Nishimura Hiromi、Fukumoto Akemi、Minegishi Katsura、Mizuno Katsutoshi、Hamada Hiroshi
    • Journal Title

      Genes to Cells

      Volume: 24 Issue: 11 Pages: 731-745

    • DOI

      10.1111/gtc.12722

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Uncovering the mystery of mammalian oocyte-embryo development.2019

    • Author(s)
      Takaoka K
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Book] Bio Clinica2021

    • Author(s)
      高岡勝吉
    • Total Pages
      2
    • Publisher
      北隆館
    • Related Report
      2020 Annual Research Report
  • [Book] Precision Medicine2019

    • Author(s)
      高岡勝吉
    • Total Pages
      85
    • Publisher
      北隆館/ニューサイエンス社
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-09-03   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi