Cited by 1,578Antifungal resistance and susceptibilityBacterial biofilms and quorum sensingFungal and yeast genetics research

Biofilm Formation by the Fungal Pathogen Candida albicans : Development, Architecture, and Drug Resistance

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Chandra, Jyotsna, Kuhn, Duncan M., Mukherjee, Pranab K., Hoyer, Lois L., McCormick, Thomas, Ghannoum, Mahmoud A.·2001·Journal of Bacteriology

Abstract

Biofilms are a protected niche for microorganisms, where they are safe from antibiotic treatment and can create a source of persistent infection. Using two clinically relevant Candida albicans biofilm models formed on bioprosthetic materials, we demonstrated that biofilm formation proceeds through three distinct developmental phases. These growth phases transform adherent blastospores to well-defined cellular communities encased in a polysaccharide matrix. Fluorescence and confocal scanning laser microscopy revealed that C. albicans biofilms have a highly heterogeneous architecture composed of cellular and noncellular elements. In both models, antifungal resistance of biofilm-grown cells increased in conjunction with biofilm formation. The expression of agglutinin-like ( ALS ) genes, which encode a family of proteins implicated in adhesion to host surfaces, was differentially regulated between planktonic and biofilm-grown cells. The ability of C. albicans to form biofilms contrasts sharply with that of Saccharomyces cerevisiae , which adhered to bioprosthetic surfaces but failed to form a mature biofilm. The studies described here form the basis for investigations into the molecular mechanisms of Candida biofilm biology and antifungal resistance and provide the means to design novel therapies for biofilm-based infections.

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Crossref · 10.1128/jb.183.18.5385-5394.2001

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  • Ergosterol levels are significantly decreased in both intermediate (12-30h) and mature phases (31-72h) biofilms compared to early-phase (0-11h) biofilms, and this is connected to decreased expression of ERG25, ERG11, and ERG6.

    “Sterol analyses show that ergosterol levels are signi fi cantly decreased in both intermediate (12-30h) and mature phases (31-72h), compared to those in earlyphase (0-11h) bio fi lms, and this is connected to the decreased expression of ergosterol biosynthetic genes ( ERG25 , ERG11 , and ERG6 ).”

    From The synthesis, regulation, and functions of sterols in<i>Candida albicans</i>: Well-known but still lots to learn (2016) · cites this paper as [74]

    The Results identify early (0–11 h) and intermediate (12–30 h) biofilm phases, but give the maturation phase as approximately 38–72 h, not 31–72 h. The Results report differential expression of ALS-family genes, not decreased ERG25, ERG11, or ERG6 expression; the passages do not report sterol analyses or a decline in ergosterol. (LLM, conf=0.82)

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  • C. albicans can colonize implanted medical devices via stable biofilms, leading to bloodstream infections and invasive systemic infections.

    “Moreover, this yeast can easily colonize implanted medical devices thanks to its capacity to form stable biofilms, a contamination that could lead to bloodstream infections and even invasive systemic infections of organs or tissues [83].”
  • The MICbiofilm of SM21 increases as the biofilm matures, a common phenomenon among antifungal agents.

    “The MICbiofilm of SM21 increases as the biofilm matures, a common phenomenon among antifungal agents [53].”
  • Specific biofilm formation genes are involved in different roles in biofilm resistance, including CTA1, ARO, MSK, HSP90, SKN1, KRE1, SIR, RIF, ZAP1, GCAL1, ADH5, and CSH1.

    “Specific biofilm formation genes are being brought up regarding different roles in biofilm resistance: peroxisomal catalase (CTA1), the biosynthesis and degradation of tyrosine genes (ARO), the muscle creatine kinase (MSK), the heat shock protein 90 (HSP 90), the sphingolipid biosynthesis (SKN 1 and KRE1), SIR, RIF, and, finally, the extracellular matrix (ECM) regulators: zinc regulated genes (ZAP”

    From Candida glabrata Biofilms: How Far Have We Come? (2017) · cites this paper as [159]

  • Resistance to chlorhexidine, fluconazole, amphotericin B, and nystatin increases as biofilms mature over time, corresponding to growth in metabolic activity over biofilm maturation.

    “A study showed that the resistance to chlorhexidine, fluconazole, amphotericin B, and nystatin increased as biofilms mature over time, corresponding to a growth in metabolic activity over biofilm maturation.”

    From Candida glabrata Biofilms: How Far Have We Come? (2017) · cites this paper as [159]

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Authors
Chandra, J., Kuhn, D. M., Mukherjee, P. K., Hoyer, L. L., McCormick, T., & Ghannoum, M. A.
Affiliations
  • University Hospitals of Cleveland (US)
  • University of Illinois Urbana-Champaign (US)
  • Case Western Reserve University (US)
Venue
Journal of Bacteriology
Published
2001-09-15
Volume
183
Issue
18
Pages
5385-5394
ISSN
  • 0021-9193 (ISSN-L)
  • 1098-5530
OpenAlex
W2125848302
Cited by
1,578
References
51
Citations by year
2026: 36 · 2025: 48 · 2024: 48 · 2023: 71 · 2022: 68 · 2021: 88 · 2020: 77 · 2019: 84 · 2018: 73 · 2017: 94 · 2016: 89 · 2015: 81 · 2014: 102 · 2013: 78 · 2012: 83
FWCI
16.98
Type
journal article
Language
en
Open access
Locations
  • Journal of Bacteriology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Allergy and Infectious Diseases (R01AI035097, AI36219, AI35097-03, AIO7024, P30AI036219)
  • National Institute of Dental and Craniofacial Research (R01-DE13992, R01DE013992)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
Candida albicans, biofilm formation, antifungal resistance, biofilm structure, planktonic versus biofilm growth, fungal adhesion, Saccharomyces cerevisiae comparison
MeSH terms
Antifungal Agents, Candida albicans, Candidiasis, Drug Resistance, Microbial, Fungal Proteins, Humans, Microbial Sensitivity Tests, Silicones, Gene Expression Regulation, Fungal, Biofilms, Microscopy, Confocal, Polymethyl Methacrylate

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