Neuron
Volume 12, Issue 1, January 1994, Pages 205-218
Journal home page for Neuron

Article
Brn-3.2: A Brn-3-related transcription factor with distinctive central nervous system expression and regulation by retinoic acid

https://doi.org/10.1016/0896-6273(94)90164-3Get rights and content

Abstract

The identification and molecular characterization of Brn-3.2 has revealed a family of Brn-3-related mammalian POU proteins that share homology with the C. elegans developmental regulator Unc-86 and extended similarity with the Drosophila neurodevelopmental gene I-POU, which defines a novel POU-IV box. Brn-3.2 exhibits DNA binding properties similar to those of Brn-3.0, but its expression is uniquely regulated by retinoic acid in teratocarcinoma and neuroblastorna cells. In the developing PNS and retina, the expression pattern of Brn-3.2 is similar to that of Brn-3.0. In the caudal CNS (spinal cord, hindbrain, and midbrain) Brn-3.2 and Brn-3.0 are initially coexpressed, but diverge later in development. Rostral to the midbrain, Brn-3.2 and Brn-3.0 exhibit nonoverlapping patterns of expression, suggesting divergence of gene function in more recently evolved structures. Our analysis suggests that in the CNS Brn-3.2 is selectively expressed in postmitotic neurons, implying a role in specifying terminally differentiated neuronal phenotypes.

References (63)

  • J. Altman et al.

    The development of the rat spinal cord

    Adv. Anat. Embryol. Cell Biol.

    (1984)
  • J. Altman et al.

    Development of the precerebellar nuclei in the rat: II.The intramural olivary migratorystream and the neurogenetic organization of the inferior olive

    J. Comp. Neurol.

    (1987)
  • J. Altman et al.

    Development of the precerebellar nuclei in the rat: IV. The anterior precerebellar extramural migratory stream and the nucleus reticularis tegmenti pontis and the basal pontine gray

    Comp. Neurol.

    (1987)
  • C.G. Begley et al.

    Molecular characterization of NSCL, a gene encoding a helix-loop-helix protein expressed in the developing nervous system

  • M. Chalfie et al.

    Genetic control of differentiation of the Caenorhabditis elegans touch receptor neurons

    Science

    (1989)
  • O. Chisaka et al.

    Developmental defects of the ear, cranial nerves and hindbrain resulting from targeted disruption of the mouse homeobox gene Hox-1.6

    Nature

    (1992)
  • L.M. Corcoran et al.

    Oct-2, although not required for B-cell development, is critical for later B-cell maturation and postnatal survival

    Genes Dev.

    (1993)
  • N. Dekker et al.

    Solution structure of the POUspecific DNA-binding domain of Oct-1

    Nature

    (1993)
  • C. Desai et al.

    A genetic pathway for the development of the Caenorhabditis elegans HSN motor neurons

    Nature

    (1988)
  • C.Q. Doe

    The generation of neuronal diversity in the Drosophila embryonic central nervous system

  • A.S. Espeseth et al.

    Retinoic acid receptor expression vector inhibits differentiation of F9 embryonal carcinoma cells

    Genes Dev.

    (1989)
  • M.R. Gerrero et al.

    Brn-3.0: a POU domain protein expressed in the sensory, immune, and endocrine systems that selectively functions on non-octamer motifs

  • V. Gobel et al.

    NSCL-2: a basic domain helix-loop-helix gene expressed in early neurogenesis

    Cell Growth Diff.

    (1992)
  • M.D. Goulding et al.

    Pax-3, a novel murine DNA binding protein expressed during early neurogenesis

    EMBO J.

    (1991)
  • G. Grun

    The development of the vertebrate retina: a comparative survey

    Adv. Anat. Embryol. Cell Biol.

    (1982)
  • L.J. Gudas

    Retinoic acid and teratocarcinoma stem cells

    Semin. Dev. Biol.

    (1991)
  • Y. Hara et al.

    Structure and evolution of four POU domain genes expressed in mouse brain

  • X. He et al.

    Expression of a large family of POU domain genes in mammalian brain development

    Nature

    (1989)
  • X. He et al.

    Tst-1, a member of the POU domain gene family, binds to a promoter of the gene encoding the cell surface adhesion molecule P0

    Mol. Cell. Biol.

    (1991)
  • P. Hunt et al.

    Homeobox genes and models for patterning the hindbrain and branchial arches

    Development (Suppl.)

    (1991)
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