Journal
MOLECULAR AND CELLULAR BIOLOGY
Volume 24, Issue 1, Pages 172-185Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/MCB.24.1.172-185.2004
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In Drosophila melanogaster, although the NF-kappaB transcription factors play a pivotal role in the inducible expression of innate immune genes, such as antimicrobial peptide genes, the exact regulatory mechanism of the tissue-specific constitutive expression of these genes in barrier epithelia is largely unknown. Here, we show that the Drosophila homeobox gene product Caudal functions as the innate immune transcription modulator that is responsible for the constitutive local expression of antimicrobial peptides cecropin and drosomycin in a tissue-specific manner. These results suggest that certain epithelial tissues have evolved a unique constitutive innate immune strategy by recruiting a developmental master control gene.
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