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Nobile, CJ, Fox, EP, Nett, JE, Sorrells, TR, Mitrovich, QM, Hernday, AD, Tuch, BB, Andes, DR and Johnson, AD (2012) A recently evolved transcriptional network controls biofilm development in Candida albicans. Cell 148:126-38


A biofilm is an organized, resilient group of microbes in which individual cells acquire properties, such as drug resistance, that are distinct from those observed in suspension cultures. Here, we describe and analyze the transcriptional network controlling biofilm formation in the pathogenic yeast Candida albicans, whose biofilms are a major source of medical device-associated infections. We have combined genetic screens, genome-wide approaches, and two in vivo animal models to describe a master circuit controlling biofilm formation, composed of six transcription regulators that form a tightly woven network with ∼1,000 target genes. Evolutionary analysis indicates that the biofilm network has rapidly evolved: genes in the biofilm circuit are significantly weighted toward genes that arose relatively recently with ancient genes being underrepresented. This circuit provides a framework for understanding many aspects of biofilm formation by C. albicans in a mammalian host. It also provides insights into how complex cell behaviors can arise from the evolution of transcription circuits.


PubMed PMC3266547 Online version:10.1016/j.cell.2011.10.048


Animals; Biofilms/growth & development; Candida albicans/genetics; Candida albicans/physiology; Candida albicans/ultrastructure; Candidiasis, Oral/microbiology; Candidiasis, Vulvovaginal/microbiology; Catheter-Related Infections/microbiology; Disease Models, Animal; Evolution, Molecular; Female; Gene Expression Profiling; Gene Expression Regulation, Fungal; Gene Regulatory Networks; Genes, Fungal; Male; Microscopy, Confocal; Rats; Rats, Sprague-Dawley; Stomatitis, Denture/microbiology