Transgenic Research

, Volume 14, Issue 5, pp 645–654 | Cite as

In vivo Cre/loxP Mediated Recombination in Mouse Clara Cells

  • Guillaume Bertin
  • Chantal Poujeol
  • Isabelle Rubera
  • Philippe Poujeol
  • Michel TaucEmail author


In small airways, Clara cells are the main epithelial cell type and play an important physiological role in surfactant production, protection against environmental agents, regulation of inflammatory and immune responses in the respiratory system. Thus, Clara cells are involved in lung homeostasis and pathologies like asthma, Chronic Obstructive Pulmonary Diseases (COPD) or cancers. To date, Clara cells implication in these pathological processes remains largely enigmatic. The engineering of a transgenic strain mouse allowing specific gene invalidation in Clara cells may be of interest to improve our knowledge about the genes involved in these diseases. By using the Cre/loxP strategy we report the engineering of a transgenic mouse strain with expression of Cre recombinase under the control of the Clara Cell Secretory Protein (CCSP) promoter. Specific staining and immuno-histochemistry performed after breeding with reporter mice revealed that CCSP drives a functional Cre expression specifically in Clara cells. This mouse strain is a powerful tool for Cre-loxP-mediated conditional recombination in the lung and represents a new tool to study Clara cell physiology.


Clara cells CCSP transgenic mouse recombination Cre 


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Copyright information

© Springer 2005

Authors and Affiliations

  • Guillaume Bertin
    • 1
  • Chantal Poujeol
    • 1
  • Isabelle Rubera
    • 1
  • Philippe Poujeol
    • 1
  • Michel Tauc
    • 1
    Email author
  1. 1.UMR-CNRS 6548University of Nice-Sophia Antipoliscedex 2France

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