Regulation of Sema3c and the Interaction between Cardiac Neural Crest and Second Heart Field during Outflow Tract Development

Kazuki Kodo, Shinsuke Shibata, Sachiko Miyagawa-Tomita, Sang Ging Ong, Hiroshi Takahashi, Tsutomu Kume, Hideyuki Okano, Rumiko Matsuoka, Hiroyuki Yamagishi

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Abstract

The cardiac neural crest cells (cNCCs) and the second heart field (SHF) play key roles in development of the cardiac outflow tract (OFT) for establishment of completely separated pulmonary and systemic circulations in vertebrates. A neurovascular guiding factor, Semaphorin 3c (Sema3c), is required for the development of the OFT, however, its regulation of the interaction between cNCCs and SHF remains to be determined. Here, we show that a Sema3c is a candidate that mediates interaction between cNCCs and the SHF during development of the OFT. Foxc1/c2 directly activates the transcription of Sema3c in the OFT, whereas, a hypomorph of Tbx1, a key SHF transcription factor, resulted in the ectopic expression of Sema3c in the pharyngeal arch region. Fgf8, a downstream secreted factor of Tbx1, inhibited the expression of Sema3c in cNCCs via activation of ERK1/2 signaling. Blocking of FGF8 caused ectopic expression of SEMA3C and a migration defect of cNCCs, resulting in abnormal chick pharyngeal arch development. These results suggest that proper spatio-temporal expression of Sema3c, regulated positively by Foxc1/c2 and negatively by the Tbx1-Fgf8 cascade, respectively, is essential for the interaction between cNCCs and the SHF that correctly navigates cNCCs towards the OFT, composed of SHF-derived cells.

Original languageEnglish
Article number6771
JournalScientific Reports
Volume7
Issue number1
DOIs
Publication statusPublished - 2017 Dec 1

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Semaphorins
Neural Crest
Branchial Region
Pulmonary Circulation
Vertebrates
Transcription Factors

ASJC Scopus subject areas

  • General

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Regulation of Sema3c and the Interaction between Cardiac Neural Crest and Second Heart Field during Outflow Tract Development. / Kodo, Kazuki; Shibata, Shinsuke; Miyagawa-Tomita, Sachiko; Ong, Sang Ging; Takahashi, Hiroshi; Kume, Tsutomu; Okano, Hideyuki; Matsuoka, Rumiko; Yamagishi, Hiroyuki.

In: Scientific Reports, Vol. 7, No. 1, 6771, 01.12.2017.

Research output: Contribution to journalArticle

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AU - Takahashi, Hiroshi

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