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Determination of left–right patterning of the mouse embryo by artificial nodal flow

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  • Shigenori Nonaka

    (Graduate School of Frontier Biosciences, Osaka University
    CREST, Japan Science and Technology Corporation (JST))

  • Hidetaka Shiratori

    (Graduate School of Frontier Biosciences, Osaka University
    CREST, Japan Science and Technology Corporation (JST))

  • Yukio Saijoh

    (Graduate School of Frontier Biosciences, Osaka University
    CREST, Japan Science and Technology Corporation (JST))

  • Hiroshi Hamada

    (Graduate School of Frontier Biosciences, Osaka University
    CREST, Japan Science and Technology Corporation (JST))

Abstract

Substantial insight has recently been achieved into the mechanisms responsible for the generation of left–right (L–R) asymmetry in the vertebrate body plan1,2,3,4. However, the mechanism that underlies the initial breaking of symmetry has remained unclear. In the mouse, a leftward fluid flow on the ventral side of the node caused by the vortical motion of cilia (referred to as nodal flow) is implicated in symmetry breaking5, but direct evidence for the role of this flow has been lacking. Here we describe the development of a system in which mouse embryos are cultured under an artificial fluid flow and with which we have examined how flow affects L–R patterning. An artificial rightward flow that was sufficiently rapid to reverse the intrinsic leftward nodal flow resulted in reversal of situs in wild-type embryos. The artificial flow was also able to direct the situs of mutant mouse embryos with immotile cilia. These results provide the first direct evidence for the role of mechanical fluid flow in L–R patterning.

Suggested Citation

  • Shigenori Nonaka & Hidetaka Shiratori & Yukio Saijoh & Hiroshi Hamada, 2002. "Determination of left–right patterning of the mouse embryo by artificial nodal flow," Nature, Nature, vol. 418(6893), pages 96-99, July.
    • Handle: RePEc:nat:nature:v:418:y:2002:i:6893:d:10.1038_nature00849
    DOI: 10.1038/nature00849
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    Cited by:

    1. Yunay Hernández-Pereira & Adán O. Guerrero & Juan Manuel Rendón-Mancha & Idan Tuval, 2019. "On the Necessary Conditions for Non-Equivalent Solutions of the Rotlet-Induced Stokes Flow in a Sphere: Towards a Minimal Model for Fluid Flow in the Kupffer’s Vesicle," Mathematics, MDPI, vol. 8(1), pages 1-11, December.

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