Bidirectional Wnt signaling between endoderm and mesoderm confers tracheal identity in mouse and human cells

Keishi Kishimoto, Kana T. Furukawa, Agustin Luz-Madrigal, Akira Yamaoka, Chisa Matsuoka, Masanobu Habu, Cantas Alev, Aaron M. Zorn and Mitsuru Morimoto ()
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Keishi Kishimoto: Riken Center for Biosystems Dynamics Research (BDR)
Kana T. Furukawa: Riken Center for Biosystems Dynamics Research (BDR)
Agustin Luz-Madrigal: Cincinnati Children’s Hospital Medical Center
Akira Yamaoka: Riken Center for Biosystems Dynamics Research (BDR)
Chisa Matsuoka: Riken Center for Biosystems Dynamics Research (BDR)
Masanobu Habu: Kyoto University
Cantas Alev: Kyoto University
Aaron M. Zorn: Cincinnati Children’s Hospital Medical Center
Mitsuru Morimoto: Riken Center for Biosystems Dynamics Research (BDR)

Nature Communications, 2020, vol. 11, issue 1, 1-12

Abstract: Abstract The periodic cartilage and smooth muscle structures in mammalian trachea are derived from tracheal mesoderm, and tracheal malformations result in serious respiratory defects in neonates. Here we show that canonical Wnt signaling in mesoderm is critical to confer trachea mesenchymal identity in human and mouse. At the initiation of tracheal development, endoderm begins to express Nkx2.1, and then mesoderm expresses the Tbx4 gene. Loss of β-catenin in fetal mouse mesoderm causes loss of Tbx4+ tracheal mesoderm and tracheal cartilage agenesis. The mesenchymal Tbx4 expression relies on endodermal Wnt activation and Wnt ligand secretion but is independent of known Nkx2.1-mediated respiratory development, suggesting that bidirectional Wnt signaling between endoderm and mesoderm promotes trachea development. Activating Wnt, Bmp signaling in mouse embryonic stem cell (ESC)-derived lateral plate mesoderm (LPM) generates tracheal mesoderm containing chondrocytes and smooth muscle cells. For human ESC-derived LPM, SHH activation is required along with WNT to generate proper tracheal mesoderm. Together, these findings may contribute to developing applications for human tracheal tissue repair.

Date: 2020
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DOI: 10.1038/s41467-020-17969-w

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