Cited by 179Neurogenesis and neuroplasticity mechanismsFetal and Pediatric Neurological DisordersDevelopmental Biology and Gene Regulation

The transcription factor Nfixis essential for normal brain development

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Campbell, Christine E, Piper, Michael, Plachez, Céline, Yeh, Yu-Ting, Baizer, Joan S, Osinski, Jason M, Litwack, E David, Richards, Linda J +1 more·2008·BMC Developmental Biology

Abstract

Background: The Nuclear Factor I (NFI) multi-gene family encodes site-specific transcription factors essential for the development of a number of organ systems. We showed previously that Nfia -deficient mice exhibit agenesis of the corpus callosum and other forebrain defects; Nfib -deficient mice have defects in lung maturation and show callosal agenesis and forebrain defects resembling those seen in Nfia -deficient animals, while Nfic -deficient mice have defects in tooth root formation. Recently the Nfix gene has been disrupted and these studies indicated that there were largely uncharacterized defects in brain and skeletal development in Nfix -deficient mice. Results: Here we show that disruption of Nfix by Cre-recombinase mediated excision of the 2nd exon results in defects in brain development that differ from those seen in Nfia and Nfib KO mice. In particular, complete callosal agenesis is not seen in Nfix -/- mice but rather there appears to be an overabundance of aberrant Pax6 - and doublecortin-positive cells in the lateral ventricles of Nfix -/- mice, increased brain weight, expansion of the cingulate cortex and entire brain along the dorsal ventral axis, and aberrant formation of the hippocampus. On standard lab chow Nfix -/- animals show a decreased growth rate from ~P8 to P14, lose weight from ~P14 to P22 and die at ~P22. If their food is supplemented with a soft dough chow from P10, Nfix -/- animals show a lag in weight gain from P8 to P20 but then increase their growth rate. A fraction of the animals survive to adulthood and are fertile. The weight loss correlates with delayed eye and ear canal opening and suggests a delay in the development of several epithelial structures in Nfix -/- animals. Conclusion: These data show that Nfix is essential for normal brain development and may be required for neural stem cell homeostasis. The delays seen in eye and ear opening and the brain morphology defects appear independent of the nutritional deprivation, as rescue of perinatal lethality with soft dough does not eliminate these defects.

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  • Although their loci are not very near to each other, Nfia, Nfib and Nfix regulate cell-type differentiation in many tissues, function as homo- or heterodimers, and bind to largely common targets.

    “Although their loci are not very near to each other, Nfia, Nfib and Nfix regulate cell-type differentiation in many tissues94–96, function as homo- or heterodimers, and bind to largely common targets97.”

    From A high-resolution transcriptomic and spatial atlas of cell types in the whole mouse brain (2023) · cites this paper as [94]

    The Background states that NFI proteins form homo- or heterodimers, and the Discussion says Nfia, Nfib and Nfix have important roles in brain development and that NFI proteins appear to bind the same DNA sequences. But the Discussion explicitly leaves open whether the proteins share target genes, so it does not establish that they bind largely common targets. It also does not establish cell-type differentiation by all three across many tissues. (LLM, conf=0.84)

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Authors
Campbell, C. E., Piper, M., Plachez, C., Yeh, Y.-T., Baizer, J. S., Osinski, J. M., Litwack, E. D., Richards, L. J., & Gronostajski, R. M.
Affiliations
  • University at Buffalo, State University of New York (US)
  • The University of Queensland (AU)
  • University of Maryland, Baltimore (US)
Corresponding author
Gronostajski, Richard M
Venue
BMC Developmental Biology
Published
2008-05-13
Volume
8
Issue
1
Pages
52-52
ISSN
1471-213X (ISSN-L)
OpenAlex
W2092041178
Cited by
179
References
36
Citations by year
2026: 6 · 2025: 17 · 2024: 8 · 2023: 9 · 2022: 4 · 2021: 13 · 2020: 9 · 2019: 11 · 2018: 11 · 2017: 14 · 2016: 6 · 2015: 9 · 2014: 11 · 2013: 15 · 2012: 9
FWCI
2.75
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • BMC Developmental Biology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Aeronautics and Space Administration (NNJ06HA59G)
  • National Institutes of Health (5r01hl080624-05, HL080624)
  • University at Buffalo
  • Medical Research Council
  • National Health and Medical Research Council (401616)
  • National Heart, Lung, and Blood Institute (R01-HL080624, HL080624)
  • National Institute of Neurological Disorders and Stroke (R01NS050515, NS050515)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
NFIX, nuclear factor I, transcription factors, brain development, callosal agenesis, Pax6, doublecortin, skeletal development, perinatal lethality, dietary supplementation, NFIA, NFIB
MeSH terms
Animals, Brain, Cerebral Cortex, Cerebral Ventricles, Embryo, Mammalian, Female, Hippocampus, Immunohistochemistry, Male, Mice, Inbred C57BL, Phenotype, Blotting, Western, Polymerase Chain Reaction, Mice, Knockout, Gene Targeting, Gene Expression Regulation, Developmental, Genes, Developmental, Mice, NFI Transcription Factors, Embryonic Stem Cells

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