Cited by 94Neurogenesis and neuroplasticity mechanismsMultiple Sclerosis Research StudiesDevelopmental Biology and Gene Regulation

CNS Myelin Paranodes Require Nkx6-2 Homeoprotein Transcriptional Activity for Normal Structure

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Southwood, Cherie, He, Chris, Garbern, James, Kamholz, John, Arroyo, Edgardo, Gow, Alexander·2004·The Journal of Neuroscience

Abstract

Homeodomain proteins play critical roles during development in cell fate determination and proliferation, but few studies have defined gene regulatory networks for this class of transcription factors in differentiated cells. Using a lacZ-knock-in strategy to ablate Nkx6-2, we find that the Nkx6-2 promoter is active embryonically in neuroblasts and postnatally in oligodendrocytes. In addition to neurological deficits, we find widespread ultrastructural abnormalities in CNS white matter and aberrant expression of three genes encoding a paranodal microtubule destabilizing protein, stathmin 1, and the paranodal cell adhesion molecules neurofascin and contactin. The involvement of these downstream proteins in cytoskeletal function and cell adhesion reveals mechanisms whereby Nkx6-2 directly or indirectly regulates axon- glial interactions at myelin paranodes. Nkx6-2 does not appear to be the central regulator of axoglial junction assembly; nonetheless, our data constitute the first evidence of such a regulatory network and provide novel insights into the mechanism and effector molecules that are involved.

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Crossref · 10.1523/jneurosci.3479-04.2004

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  • This transition was accompanied by reduced activity of myelin-associated gene networks and diminished regulon activity of key transcriptional regulators, including MYRF and NKX6-2, which serve as central regulators of myelin gene expression programs.

    “This transition was accompanied by reduced activity of myelin-associated gene networks and diminished regulon activity of key transcriptional regulators, including MYRF and NKX6-2, which serve as central regulators of myelin gene expression programs (53-55) (Fig. 5J).”

    From Molecular and cellular processes disrupted in the early postnatal Down syndrome prefrontal cortex (2026) · cites this paper as [55]

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Authors
Southwood, C., He, C., Garbern, J., Kamholz, J., Arroyo, E., & Gow, A.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Wayne State University (US)
  • University of Pennsylvania (US)
Corresponding author
Gow, Alexander
Venue
The Journal of Neuroscience
Published
2004-12-15
Volume
24
Issue
50
Pages
11215-11225
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2075117058
Cited by
94
References
59
Citations by year
2026: 4 · 2025: 5 · 2024: 3 · 2023: 4 · 2022: 5 · 2021: 4 · 2020: 7 · 2019: 5 · 2018: 3 · 2017: 3 · 2016: 2 · 2015: 3 · 2014: 1 · 2013: 7 · 2012: 4
FWCI
0.94
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Multiple Sclerosis Society (RG2891)
  • Multiple Sclerosis Society
  • National Institutes of Health
  • National Institute on Deafness and Other Communication Disorders (DC006262, R01DC006262)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
NKX6-2, homeodomain transcription factor, oligodendrocytes, axon-glia interaction, STMN1, neurofascin, contactin, gene regulatory networks, CNS myelination
MeSH terms
Animals, Central Nervous System, Cranial Nerves, Intercellular Junctions, Microtubule Proteins, Motor Neurons, Myelin Sheath, Nerve Tissue Proteins, Oligodendroglia, Phosphoproteins, Psychomotor Performance, Recombinant Fusion Proteins, Transcription Factors, Transcription, Genetic, Evoked Potentials, Auditory, Brain Stem, Mice, Knockout, Homeodomain Proteins, Gene Expression Regulation, Developmental, Rotarod Performance Test, Stathmin, Mice

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