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Slit and robo expression in the developing mouse lung.

James M Greenberg1, Felisa Y Thompson, Sherry K Brooks

  • 1Divisions of Pulmonary Biology and Neonatology, Cincinnati Children's Hospital Research Foundation, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45229, USA. james.greenberg@cchmc.org

Developmental Dynamics : an Official Publication of the American Association of Anatomists
|May 27, 2004
PubMed
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Slit and Robo genes are expressed in fetal lung mesenchyme during development. Their specific expression patterns suggest they guide mesenchymal organization and differentiation in the developing lung.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Mammalian lung development involves intricate interactions between endoderm and mesenchyme.
  • Mesenchymal remodeling and differentiation are critical during airway branching.
  • Mechanisms governing mesenchymal organization in the lung are not well understood.

Purpose of the Study:

  • To identify candidate genes involved in lung mesenchymal organization.
  • To investigate the role of Slit-Robo signaling in fetal lung development.

Main Methods:

  • In situ hybridization was used to analyze gene expression.
  • Expression patterns of Slit and Robo genes were examined in fetal lung tissue.

Main Results:

Related Experiment Videos

  • Two Slit genes (Slit-2, Slit-3) and two Robo genes (Robo-1, Robo-2) are expressed in fetal lung mesenchyme.
  • Slit-2 and Robo-1 show broad expression, decreasing by birth.
  • Slit-3 and Robo-2 exhibit complementary expression patterns in specific mesenchymal subsets.

Conclusions:

  • The temporal and spatial expression of Slit and Robo genes suggests their involvement in organizing fetal lung mesenchyme.
  • These findings propose Slit-Robo signaling as a key regulator of lung mesenchymal organization and differentiation.