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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Phenotypic consequences of lung-specific inducible expression of FGF-3.

Members of the fibroblast growth factor (FGF) family play a critical role in embryonic lung development and adult lung physiology. The in vivo investigation of the role FGFs play in the adult lung has been hampered because the constitutive pulmonary expression of these factors often has deleterious effects and frequently results in neonatal lethality. To circumvent these shortcomings, we expressed FGF-3 in the lungs under the control of the progesterone antagonist-responsive binary transgenic system. Four binary transgenic lines were obtained that showed ligand-dependent induction of FGF-3 with induced levels of FGF-3 expression dependent on the levels of expression of the GLp65 regulator as well as the dose of the progesterone antagonist, RU486, administered. FGF-3 expression in the adult mouse lung resulted in two phenotypes depending on the levels of induction of FGF-3. Low levels of FGF-3 expression resulted in massive free alveolar macrophage infiltration. High levels of FGF-3 expression resulted in diffuse alveolar type II cell hyperplasia. Both phenotypes were reversible after the withdrawal of RU486. This system will be a valuable means of investigating the diverse roles of FGFs in the adult lung.[1]


  1. Phenotypic consequences of lung-specific inducible expression of FGF-3. Zhao, B., Chua, S.S., Burcin, M.M., Reynolds, S.D., Stripp, B.R., Edwards, R.A., Finegold, M.J., Tsai, S.Y., DeMayo, F.J. Proc. Natl. Acad. Sci. U.S.A. (2001) [Pubmed]
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