Cited by 306Fungal and yeast genetics researchAntifungal resistance and susceptibilityFungal Infections and Studies

Identification and Characterization of TUP1-Regulated Genes in Candida albicans

Braun, Burkhard R, Head, W Steven, Wang, Ming X, Johnson, Alexander D·2000·Genetics

Abstract

TUP1 encodes a transcriptional repressor that negatively controls filamentous growth in Candida albicans. Using subtractive hybridization, we identified six genes, termed repressed by TUP1 (RBT), whose expression is regulated by TUP1. One of the genes (HWP1) has previously been characterized, and a seventh TUP1-repressed gene (WAP1) was recovered due to its high similarity to RBT5. These genes all encode secreted or cell surface proteins, and four out of the seven (HWP1, RBT1, RBT5, and WAP1) encode putatively GPI-modified cell wall proteins. The remaining three, RBT2, RBT4, and RBT7, encode, respectively, an apparent ferric reductase, a plant pathogenesis-related protein (PR-1), and a putative secreted RNase T2. The expression of RBT1, RBT4, RBT5, HWP1, and WAP1 was induced in wild-type cells during the switch from the yeast form to filamentous growth, indicating the importance of TUP1 in regulating this process and implicating the RBTs in hyphal-specific functions. We produced knockout strains in C. albicans for RBT1, RBT2, RBT4, RBT5, and WAP1 and detected no phenotypes on several laboratory media. However, two animal models for C. albicans infection, a rabbit cornea model and a mouse systemic infection model, revealed that rbt1Δ and rbt4Δ strains had significantly reduced virulence. TUP1 appears, therefore, to regulate many genes in C. albicans, a significant fraction of which are induced during filamentous growth, and some of which participate in pathogenesis.

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Crossref · 10.1093/genetics/156.1.31

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Authors
Braun, B. R., Head, W. S., Wang, M. X., & Johnson, A. D.
Affiliations
  • University of California, San Francisco (US)
  • Vanderbilt University (US)
Corresponding author
Braun, Burkhard R
Venue
Genetics
Published
2000-09-01
Volume
156
Issue
1
Pages
31-44
ISSN
  • 0016-6731 (ISSN-L)
  • 1943-2631
OpenAlex
W1893303563
Cited by
306
References
53
Citations by year
2026: 4 · 2025: 8 · 2024: 4 · 2023: 10 · 2022: 8 · 2021: 10 · 2020: 10 · 2019: 8 · 2018: 11 · 2017: 12 · 2016: 9 · 2015: 10 · 2014: 11 · 2013: 21 · 2012: 9
FWCI
5.31
Type
journal article
Language
en
Open access
closed
Locations
  • Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ey001621-22)
  • National Eye Institute (EY 01621)
  • National Institute of General Medical Sciences (GM37049, R01GM037049)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
Keywords
Tup1, Candida albicans, transcriptional repression, filamentous growth, HWP1, secreted proteins, ferric reductase, RNase T2, virulence, yeast-to-hypha transition, knockout strains
MeSH terms
Amino Acid Sequence, Animals, Candida albicans, Candidiasis, Corneal Diseases, Fungal Proteins, Genes, Fungal, Mice, Inbred BALB C, Molecular Sequence Data, Nuclear Proteins, Phenotype, Rabbits, Repressor Proteins, Virulence, Gene Expression Regulation, Fungal, Conserved Sequence, Gene Deletion, Sequence Homology, Amino Acid, Saccharomyces cerevisiae Proteins, Mice

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