Cited by 62Fungal and yeast genetics researchAntifungal resistance and susceptibilityGlycosylation and Glycoproteins Research

Differential virulence of Candida glabrata glycosylation mutants

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West, Lara, Lowman, Douglas W., Mora-Montes, Héctor M., Grubb, Sarah, Murdoch, Craig, Thornhill, Martin H., Gow, Neil A.R., Williams, David +1 more·2013·Journal of Biological Chemistry

Abstract

The fungus Candida glabrata is an important and increasingly common pathogen of humans, particularly in immunocompromised hosts. Despite this, little is known about the attributes that allow this organism to cause disease or its interaction with the host immune system. However, in common with other fungi, the cell wall of C. glabrata is the initial point of contact between the host and pathogen, and as such, it is likely to play an important role in mediating interactions and hence virulence. Here, we show both through genetic complementation and polysaccharide structural analyses that C. glabrata ANP1, MNN2, and MNN11 encode functional orthologues of the respective Saccharomyces cerevisiae mannosyltransferases. Furthermore, we show that deletion of the C. glabrata Anp1, Mnn2, and Mnn11 mannosyltransferases directly affects the structure of the fungal N -linked mannan, in line with their predicted functions, and this has implications for cell wall integrity and consequently virulence. C. glabrata anp1 and mnn2 mutants showed increased virulence, compared with wild-type (and mnn11 ) cells. This is in contrast to Candida albicans where inactivation of genes involved in mannan biosynthesis has usually been linked to an attenuation of virulence. In the long term, a better understanding of the attributes that allow C. glabrata to cause disease will provide insights that can be adopted for the development of novel therapeutic and diagnostic approaches. Background: Candida glabrata virulence is poorly understood at the molecular level. Results: Inactivation of components of the C. glabrata glycosylation machinery results in changes in fungal mannan structure and altered virulence. Conclusion: Changes in C. glabrata cell wall architecture impact the host-pathogen interactions. Significance: Greater understanding of C. glabrata virulence will provide insights that can be adopted for development of novel diagnostic and therapeutic interventions.

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Crossref · 10.1074/jbc.m113.478743

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  • Mutants lacking CgAnp1 and CgMnn2 were hyperadherent to human microvascular endothelial cells HMEC-1.

    “In addition, two enzymes of the N-linked glycosylation system, α-1,6-mannosyltransferase (CgAnp1) and α-1,2-mannosyltransferase (CgMnn2), have also been implicated in adherence, as mutants lacking these enzymes were hyperadherent to the human microvascular endothelial cells HMEC-1 [138].”

    From Candida glabrata: A Lot More Than Meets the Eye (2019) · cites this paper as [138]

  • CgAnp1 and CgMnn2 are implicated in adherence.

    “In addition, two enzymes of the N-linked glycosylation system, α-1,6-mannosyltransferase (CgAnp1) and α-1,2-mannosyltransferase (CgMnn2), have also been implicated in adherence, as mutants lacking these enzymes were hyperadherent to the human microvascular endothelial cells HMEC-1 [138].”

    From Candida glabrata: A Lot More Than Meets the Eye (2019) · cites this paper as [138]

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  1. [72]Findon H. (2006) Microbiology. Ph.D. thesis, Imperial College London, London

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Authors
West, L., Lowman, D. W., Mora-Montes, H. M., Grubb, S., Murdoch, C., Thornhill, M. H., Gow, N. A. R., Williams, D., & Haynes, K.
Affiliations
  • Imperial College London (GB)
  • East Tennessee State University (US)
  • University of Sheffield (GB)
  • University of Aberdeen (GB)
  • University of Exeter (GB)
Corresponding author
Haynes, Ken
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2013-07
Volume
288
Issue
30
Pages
22006-22018
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2059639333
Cited by
62
References
88
Citations by year
2026: 1 · 2025: 5 · 2023: 5 · 2022: 6 · 2021: 4 · 2020: 5 · 2019: 8 · 2018: 4 · 2017: 9 · 2016: 7 · 2015: 4 · 2014: 3 · 2013: 1
FWCI
2.24
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Open Research Exeter (University of Exeter) (publishedVersion)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
  • Aberdeen University Research Archive (Aberdeen University) (submittedVersion)
  • Digital Commons - East Tennessee State University (East Tennessee State University) (submittedVersion)
  • Figshare (submittedVersion)
Funders
  • Wellcome Trust (072420, 080088, 075174)
  • National Institutes of Health
  • Directorate for Biological Sciences
  • Biotechnology and Biological Sciences Research Council (BBS/B/10331, BB/F005210/2, BB/F005210/1, BBF005210)
  • National Institute of General Medical Sciences (R01GM053522, R01GM53522)
  • National Institute of Allergy and Infectious Diseases (R21AI065549)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
Keywords
Candida glabrata, virulence, glycosylation, mannosyltransferase, cell wall integrity, fungal cell wall, host-pathogen interaction, gene complementation, polysaccharide structure, immunocompromised patients
MeSH terms
Animals, Candidiasis, Carbohydrate Sequence, Cell Line, Cell Wall, Fungal Proteins, Genetic Complementation Test, Glycosylation, Humans, Isoenzymes, Male, Mannans, Mannosyltransferases, Molecular Sequence Data, Mutation, Magnetic Resonance Spectroscopy, Virulence, Saccharomyces cerevisiae Proteins, Candida glabrata, Endothelial Cells, Mice, Kaplan-Meier Estimate

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