Candida albicans is among the major human fungal pathogens, causing both mucosal and deep tissue infections. A significant risk factor for invasive C. albicans infection is the presence of an implanted medical device, which provides a surface for biofilm formation. The biofilm creates a protected microenvironment for survival of the pathogen. The immediate goal of studies here proposed is to define the key C. albicans genes and regulatory pathways that govern biofilm formation, and to move forward to yield mechanistic insight. The proposed studies build upon progress in the last funding period that defined two biofilm transcriptional regulators, Bcr1 and Zap1/Csr1, along with several of their functional target genes. Our main objectives now are (1) to define the interactions among Bcr1 regulated gene products that promote biofilm adherence, (2) to determine roles of Zap1 target gene families in accumulation of extracellular matrix material, and (3) to define the functions of newly discovered transcriptional regulators that promote adherence of yeast-form cells

Public Health Relevance

Presence of an implanted medical device, such as a venous catheter, is a major risk factor for lethal disseminated Candida infections. Proposed studies will improve our understanding of mechanisms that permit Candida growth on implanted devices. The mechanistic understanding will permit longer-term development of new therapeutic and diagnostic strategies.

National Institute of Health (NIH)
National Institute of Allergy and Infectious Diseases (NIAID)
Research Project (R01)
Project #
Application #
Study Section
Special Emphasis Panel (ZRG1-IDM-S (02))
Program Officer
Duncan, Rory A
Project Start
Project End
Budget Start
Budget End
Support Year
Fiscal Year
Total Cost
Indirect Cost
Carnegie-Mellon University
Schools of Arts and Sciences
United States
Zip Code
Lagree, Katherine; Desai, Jigar V; Finkel, Jonathan S et al. (2018) Microscopy of fungal biofilms. Curr Opin Microbiol 43:100-107
Lagree, Katherine; Mitchell, Aaron P (2017) Fungal Biofilms: Inside Out. Microbiol Spectr 5:
Woolford, C A; Lagree, K; Aleynikov, T et al. (2017) Negative control of Candida albicans filamentation-associated gene expression by essential protein kinase gene KIN28. Curr Genet 63:1073-1079
Min, Kyunghun; Ichikawa, Yuichi; Woolford, Carol A et al. (2016) Candida albicans Gene Deletion with a Transient CRISPR-Cas9 System. mSphere 1:
Desai, Jigar V; Mitchell, Aaron P (2015) Candida albicans Biofilm Development and Its Genetic Control. Microbiol Spectr 3:
Desai, Jigar V; Cheng, Shaoji; Ying, Tammy et al. (2015) Coordination of Candida albicans Invasion and Infection Functions by Phosphoglycerol Phosphatase Rhr2. Pathogens 4:573-89
Zarnowski, Robert; Westler, William M; Lacmbouh, Ghislain Ade et al. (2014) Novel entries in a fungal biofilm matrix encyclopedia. MBio 5:e01333-14
Desai, Jigar V; Mitchell, Aaron P; Andes, David R (2014) Fungal biofilms, drug resistance, and recurrent infection. Cold Spring Harb Perspect Med 4:
Desai, Jigar V; Bruno, Vincent M; Ganguly, Shantanu et al. (2013) Regulatory role of glycerol in Candida albicans biofilm formation. MBio 4:e00637-12
Taff, Heather T; Nett, Jeniel E; Zarnowski, Robert et al. (2012) A Candida biofilm-induced pathway for matrix glucan delivery: implications for drug resistance. PLoS Pathog 8:e1002848

Showing the most recent 10 out of 31 publications