... MUC5B by these transcriptionfactors is, however, unknown, and the development ofmurine models of lung diseases is necessary to gain aninsight into, and to understand, the regulation of the murine ... factors seems to be more gen-eral, and may affect the expression of other mucingenes, such as MUC2, MUC3 and MUC4, as theirpromoters also contain cis-elements for these tran-scription factors [6,13,42,43]. ... candidate to be a target gene of GATAsfactors in the primitive gut [8]. TTF-1 and GATA-6 are required for the formation and differentiation ofdistal epithelium [20,44,45]. In normal adult tissue,MUC4...