Specific antibody to Cryptococcus neoformans glucurunoxylomannan antagonizes antifungal drug action against cryptococcal biofilms in vitro

Luis R. Martinez, Eirini Christaki, Arturo Casadevall

Research output: Contribution to journalArticle


The fungus Cryptococcus neoformans possesses a polysaccharide capsule and can form biofilms on medical devices. We investigated the efficacy that the combination of a specific antibody to the capsular polysaccharide and antifungal therapy has against cryptococcal biofilms. The antibody enhanced the susceptibility of planktonic cells to antifungal agents, but an antagonistic effect was observed for combination therapy against C. neoformans biofilms. Our findings suggest that antibody therapies for infectious diseases that involve biofilms may antagonize certain antimicrobial therapies, and they also imply that products of the immune response may contribute to drug resistance of biofilms formed in vivo.

Original languageEnglish (US)
Pages (from-to)261-266
Number of pages6
JournalJournal of Infectious Diseases
Issue number2
StatePublished - Jul 15 2006
Externally publishedYes


ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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