This article is a US Government work and, as such, is in the public domain in the United States of America.
Bmp2 is required for cephalic neural tube closure in the mouse†
Version of Record online: 18 DEC 2008
Published 2008 Wiley-Liss, Inc.
Volume 238, Issue 1, pages 110–122, January 2009
How to Cite
Castranio, T. and Mishina, Y. (2009), Bmp2 is required for cephalic neural tube closure in the mouse. Dev. Dyn., 238: 110–122. doi: 10.1002/dvdy.21829
- Issue online: 18 DEC 2008
- Version of Record online: 18 DEC 2008
- Manuscript Accepted: 13 NOV 2008
- Intramural Research Program of the NIEHS/NIH. Grant Number: ES071003-10
- Gift from RIKEN Brain Science Institute
- neural tube defects;
- neural tube closure;
BMPs have been shown to play a role in neural tube development particularly as dorsalizing factors. To explore the possibility that BMP2 could play a role in the developing neural tube (NT) beyond the lethality of Bmp2 null embryos, we created Bmp2 chimeras from Bmp2 null ES cells and WT blastocysts. Analysis of Bmp2 chimeras reveals NT defects at day 9.5 (E9.5). We found that exclusion of Bmp2 null ES cells from the dorsal NT did not always prevent defects. For further comparison, we used a Bmp2 mutant line in a mixed background. Phenotypes observed were similar to chimeras including open NT defects, postneurulation defects, and abnormal neural ectoderm in heterozygous and homozygous null embryos demonstrating a pattern of dose-dependent signaling. Our data exposes BMP2 as a unique player in the developing NT for dorsal patterning and identity, and normal cephalic neural tube closure in a dose-dependent manner. Developmental Dynamics 238:110–122, 2009. Published 2008 Wiley-Liss, Inc.