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Localization of Pbx1 transcripts in developing rat embryos

V J Roberts1, M A van Dijk, C Murre

  • 1Department of Reproductive Medicine, University of California, San Diego, La Jolla 92093, USA.

Mechanisms of Development
|June 1, 1995
PubMed
Summary
This summary is machine-generated.

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Pbx1, a homeodomain protein, is expressed in many embryonic tissues, particularly neuronal tissues. Its expression pattern suggests Pbx1 and Hox proteins collaborate to regulate common target genes during development.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • A novel family of homeodomain proteins, including Pbx1, Pbx2, and Pbx3, has been identified.
  • The Pbx protein family is known to regulate the biological activities of Hox proteins.

Purpose of the Study:

  • To investigate the expression pattern of Pbx1 during embryonic development.
  • To explore the potential functional relationship between Pbx1 and Hox proteins.

Main Methods:

  • In situ hybridization was employed to detect Pbx1 transcripts in embryonic tissues.

Main Results:

  • Pbx1 transcripts were found in various embryonic tissues between 12 and 20 days post coitum.
  • Highest Pbx1 expression levels were observed in neuronal tissues, including the brain, spinal cord, and ganglia.

Related Experiment Videos

  • Pbx1 expression was also detected in the gut, lung, olfactory epithelium, and kidney.

    • Conclusions:

    • The expression pattern of Pbx1 significantly overlaps with that of Hox gene products.
    • These findings support a model where Pbx1 and Hox proteins function in parallel to regulate common target genes in the developing embryo.