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. 2018 Jul 30;8:11391. doi: 10.1038/s41598-018-29740-9

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The putative model of Xbra-Smad-1-mediated synergistic regulation of ventx1.1 transcriptional activation and neurogenesis inhibition in VMZ during early Xenopus development. The putative synergistic transcriptional activation of ventx1.1 (−180) promoter is regulated by the physical interaction of Smad-1 and Xbra in Xenopus embryos. BMP-4/Smad-1 and FGF/Xbra mediate a crosstalk in VMZ, inhibiting neurogenesis in a Ventx1.1-dependent manner during embryonic development of Xenopus.