Cited by 83Antifungal resistance and susceptibilityFungal Infections and StudiesFungal and yeast genetics research

Vaccination with recombinant N-terminal domain of Als1p improves survival during murine disseminated candidiasis by enhancing cell-mediated, not humoral, immunity

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Ibrahim, Ashraf S., Spellberg, Brad J., Avenissian, Valentina, Fu, Yue, Filler, Scott G., Edwards, John E.·2005·Infection and Immunity

Abstract

Candida spp. are opportunistic fungal pathogens that are among the most common causes of nosocomial bloodstream infections. The mortality attributable to disseminated candidiasis is 40 to 50% despite antifungal therapy. Clearly, new strategies are needed to prevent this life-threatening infection. Because risk factors for disseminated candidiasis are well defined and frequently of limited duration, vaccination is an appealing prophylactic strategy. We have identified a cell surface protein, Als1p, that mediates adherence of Candida albicans to a variety of human substrates and plastic. Here we report that immunizing BALB/c mice with the recombinant N-terminal domain of Als1p (rAls1p-N) improved survival during a subsequent challenge with a lethal inoculum of C. albicans. The protective 20-μg dose of rAls1p-N significantly increased Candida stimulation of Th1 splenocytes and increased in vivo delayed-type hypersensitivity. In contrast, antibody titers did not correlate with protection. Finally, the vaccine was not protective in T-cell-deficient mice but was protective in B-cell-deficient mice. These data indicate that the mechanism of action of the rAls1p-N vaccine is stimulation of cell-mediated, rather than humoral, immunity against C. albicans. The majority of efforts to date have focused on the development of passive immunization strategies to prevent or treat disseminated candidiasis. In contrast, our results provide proof of principle for vaccination with an adhesin of C. albicans and emphasize the potential for cell-mediated immune modulation as a prophylactic or therapeutic strategy against disseminated candidiasis.

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Crossref · 10.1128/iai.73.2.999-1005.2005

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Authors
Ibrahim, A. S., Spellberg, B. J., Avenissian, V., Fu, Y., Filler, S. G., & Edwards, J. E.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Ibrahim, Ashraf S.
Venue
Infection and Immunity
Published
2005-02
Volume
73
Issue
2
Pages
999-1005
ISSN
  • 0019-9567 (ISSN-L)
  • 1098-5522
OpenAlex
W2122999031
Cited by
83
References
68
Citations by year
2025: 3 · 2022: 2 · 2021: 6 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 3 · 2016: 3 · 2015: 3 · 2014: 10 · 2013: 1 · 2012: 3
FWCI
6.21
Type
journal article
Language
en
Open access
Locations
  • Infection and Immunity (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (P01 AI-37194, R01AI019990, R03AI054531, K08AI060641, R01AI054928, R03 AI 054331, P01AI037194)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
Candida albicans, systemic candidiasis, recombinant vaccine, cell-mediated immunity, Th1 response, delayed-type hypersensitivity, adhesins, fungal adhesion, humoral immunity, T cell deficiency, B cell deficiency, prophylactic vaccination, fungemia
MeSH terms
Animals, Antibodies, Antibody Formation, Candida albicans, Candidiasis, Fungal Proteins, Hypersensitivity, Delayed, Immunity, Cellular, Peptide Fragments, Recombinant Proteins, Time Factors, Vaccination, Protein Structure, Tertiary, Th1 Cells, Mice

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