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Related Experiment Videos

Abnormal alveolar development associated with elevated adenine nucleosides.

Suman K Banerjee1, Hays W J Young, Andrea Barczak

  • 1Department of Biochemistry and Molecular Biology, University of Texas-Houston Medical School, 6431 Fannin, Houston, TX 77030, USA.

American Journal of Respiratory Cell and Molecular Biology
|July 12, 2003
PubMed
Summary
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Elevated adenosine levels disrupt lung development by altering cell proliferation and apoptosis. Adenosine deaminase enzyme therapy restored normal lung development in mice, highlighting adenosine signaling

Area of Science:

  • Pulmonary Biology
  • Developmental Biology
  • Molecular Genetics

Background:

  • Adenosine signaling is crucial in physiological systems, but its role in lung development remains largely unknown.
  • Alveogenesis and microvascular maturation are critical late stages of mammalian lung development.
  • Adenosine deaminase null (ADA-/-) mice display abnormal alveogenesis and elevated lung adenosine levels.

Purpose of the Study:

  • To investigate the role of adenosine signaling in lung development, specifically alveogenesis and microvascular maturation.
  • To elucidate the molecular mechanisms underlying abnormal lung development in ADA-/- mice.
  • To assess the therapeutic potential of ADA enzyme therapy in correcting adenosine-mediated lung developmental defects.

Main Methods:

  • Utilized adenosine deaminase null (ADA-/-) mouse models to study lung development.

Related Experiment Videos

  • Performed large-scale gene expression analysis using oligonucleotide-based microarrays on ADA-/- lungs.
  • Investigated cell proliferation and apoptosis patterns in developing lung tissue.
  • Assessed the effects of Adenosine deaminase (ADA) enzyme therapy on lung development.

    • Main Results:

    • ADA-/- mice exhibited abnormal alveogenesis, characterized by decreased cell proliferation and increased alveolar type II cell apoptosis.
    • Gene expression analysis revealed alterations in genes regulating apoptosis, proliferation, and vascular development in ADA-/- lungs.
    • ADA enzyme therapy normalized apoptosis, proliferation, and alveolar development, preventing adenosine elevation.
    • Adenosine receptors were detected in the developing lung, suggesting a role for receptor-mediated signaling.

    Conclusions:

    • Elevated lung adenosine disrupts normal alveogenesis by interfering with cell proliferation and apoptosis.
    • Adenosine signaling, mediated by adenosine receptors, plays a significant role in mammalian lung development.
    • ADA enzyme therapy is a potential therapeutic strategy for correcting adenosine-related lung developmental abnormalities.