Cited by 284Fungal and yeast genetics researchAntifungal resistance and susceptibilityFungal Infections and Studies

A family of glycosylphosphatidylinositol-linked aspartyl proteases is required for virulence of Candida glabrata

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Kaur, Rupinder, Ma, Biao, Cormack, Brendan P.·2007·Proceedings of the National Academy of Sciences

Abstract

Candida glabrata is a yeast pathogen of humans. We have established a tissue culture model to analyze the interaction of C. glabrata with macrophages. Transcript profiling of yeast ingested by macrophages reveals global changes in metabolism as well as increased expression of a gene family (YPS genes) encoding extracellular glycosylphosphatidylinositol-linked aspartyl proteases. Eight of these YPS genes are found in a cluster that is unique to C. glabrata. Genetic analysis shows that the C. glabrata YPS genes are required for cell wall integrity, adherence to mammalian cells, survival in macrophages and virulence. By monitoring the processing of a cell wall adhesin, Epa1, we also show that Yps proteases play an important role in cell wall re-modeling by removal and release of glycosylphosphatidylinositol-anchored cell wall proteins.

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Crossref · 10.1073/pnas.0611195104

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  • A transcription profile of C. glabrata following macrophage internalization revealed the up-regulation of genes involved in gluconeogenesis, β-oxidation and glyoxylate cycle, similar to what has been described for C. albicans; moreover, a putative acetate transporter (ADY2a) appears to be induced.

    “A transcription profile of C. glabrata following macrophage internalization revealed the up-regulation of genes involved in gluconeogenesis, β-oxidation and glyoxylate cycle, similar to what has been described for C. albicans. Moreover, a putative acetate transporter (ADY2a) appears to be induced (Kaur et al., 2007).”
  • C. glabrata cells resist killing by macrophages and have evolved distinct strategies for intracellular survival.

    “Of note, C. glabrata cells also resist killing by macrophages and have evolved distinct strategies for intracellular survival (Otto and Howard, 1976; Kaur et al., 2007; Seider et al., 2010).”
  • Previous studies reported ADY2a upregulation in C. glabrata cells upon macrophage phagocytosis.

    “Of note, previous studies reported an ADY2a upregulation in C. glabrata cells upon macrophage phagocytosis (Kaur et al., 2007; Seider et al., 2011).”
  • Inside phagosomes, C. glabrata faces glucose-limited environments and must change its metabolism to utilize non-fermentable carbon sources.

    “In such niches, for example inside phagosomes, it faces glucose-limited environments. To survive, it has to change its metabolism and utilize non-fermentable carbon sources (Kaur et al., 2007; Roetzer et al., 2010; Fukuda et al., 2013).”
  • The glyoxylate cycle is significant in the virulence of C. albicans and C. glabrata, and ADY2 and FPS1 are expressed inside macrophages.

    “As previously mentioned, some studies have recognized the significance of the glyoxylate cycle in the virulence of C. albicans (Ramirez and Lorenz, 2007) and C. glabrata (Kaur et al., 2007; Fukuda et al., 2013) and have shown that ADY2 and FPS1 are expressed inside macrophages (Kaur et al., 2007; Seider et al., 2011).”

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  1. [20]Ding AH, Nathan CF, Stuehr DJ. J Immunol. 1988;141:2407–2412. [[PubMed](https://pubmed.ncbi.nlm.nih.gov/3139757/)] [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=J%20Immunol&author=AH%20Ding&author=CF%20Nathan&author=DJ%20Stuehr&volume=141&publication_year=1988&pages=2407-2412&pmid=3139757&)]

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Authors
Kaur, R., Ma, B., & Cormack, B. P.
Affiliations
  • Johns Hopkins University (US)
  • Electronics Corporation of India (IN)
Corresponding author
Cormack, Brendan P.
Venue
Proceedings of the National Academy of Sciences
Published
2007-05
Volume
104
Issue
18
Pages
7628-7633
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2100246797
Cited by
284
References
23
Citations by year
2026: 8 · 2025: 12 · 2024: 12 · 2023: 11 · 2022: 19 · 2021: 14 · 2020: 16 · 2019: 17 · 2018: 14 · 2017: 12 · 2016: 10 · 2015: 18 · 2014: 23 · 2013: 25 · 2012: 19
FWCI
4.64
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Johns Hopkins University
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (R01AI046223)
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
Candida glabrata, virulence, macrophage survival, cell wall integrity, cell wall remodeling, cell adhesion, gene expression profiling, fungal pathogens
MeSH terms
Animals, Candidiasis, Cell Line, Macrophages, Mice, Inbred BALB C, Mutation, Protein Binding, Substrate Specificity, Virulence, Up-Regulation, Aspartic Acid Endopeptidases, Glycosylphosphatidylinositols, Gene Deletion, Candida glabrata, Mice

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