Blimp1 regulates development of the posterior forelimb, caudal pharyngeal arches, heart and sensory vibrissae in mice

Elizabeth J. Robertson*, Iphigenie Charatsi, Clive J. Joyner, Chad H. Koonce, Marc Morgan, Ayesha Islam, Carol Paterson, Emily Lejsek, Sebastian J. Arnold, Axel Kallies, Stephen L. Nutt, Elizabeth K. Bikoff

*Corresponding author for this work

Research output: Contribution to journalArticle

96 Scopus citations

Abstract

The zinc-finger transcriptional repressor Blimp1 (Prdm1) controls gene expression patterns during differentiation of B lymphocytes and regulates epigenetic changes required for specification of primordial germ cells. Blimp1 is dynamically expressed at diverse tissue sites in the developing mouse embryo, but its functional role remains unknown because Blimp1 mutant embryos arrest at E10.5 due to placental insufficiency. To explore Blimp1 activities at later stages in the embryo proper, here we used a conditional inactivation strategy. A Blimp1-Cre transgenic strain was also exploited to generate a fate map of Blimp1-expressing cells. Blimp1 plays essential roles in multipotent progenitor cell populations in the posterior forelimb, caudal pharyngeal arches, secondary heart field and sensory vibrissae and maintains key signalling centres at these diverse tissues sites. Interestingly, embryos carrying a hypomorphic Blimp1gfp reporter allele survive to late gestation and exhibit similar, but less severe developmental abnormalities, whereas transheterozygous Blimp1gfpl- embryos with further reduced expression levels, display exacerbated defects. Collectively, the present experiments demonstrate that Blimp1 requirements in diverse cell types are exquisitely dose dependent.

Original languageEnglish (US)
Pages (from-to)4335-4345
Number of pages11
JournalDevelopment
Volume134
Issue number24
DOIs
StatePublished - Dec 2007

Keywords

  • Blimp1 (Prdm1)
  • Fgf8
  • Forelimb
  • Heart morphogenesis
  • Pharyngeal epithelium
  • Sensory vibrissae
  • Shh
  • Tbx1
  • ZPA

ASJC Scopus subject areas

  • Molecular Biology
  • Developmental Biology

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  • Cite this

    Robertson, E. J., Charatsi, I., Joyner, C. J., Koonce, C. H., Morgan, M., Islam, A., Paterson, C., Lejsek, E., Arnold, S. J., Kallies, A., Nutt, S. L., & Bikoff, E. K. (2007). Blimp1 regulates development of the posterior forelimb, caudal pharyngeal arches, heart and sensory vibrissae in mice. Development, 134(24), 4335-4345. https://doi.org/10.1242/dev.012047