Investigation of the role of Lip5-a member of the secreted lipase gene family-in the virulence of Candida albicans

Zsuzsanna Hamari, Adél Tóth, Lilla Pintér, Tibor Németh, Péter Horváth, Viktor Ambrus, Csaba Vágvölgyi, Attila Gácser

Research output: Contribution to journalArticle

Abstract

Candida albicans (Ca) is the most common species isolated from invasive candidiasis. It has been shown that secreted lipases of Ca contribute to the virulence of the fungus during infection. In this study, we generated heterozygous and homozygous lipase 5 (LIP5) mutants in Ca by the caSAT1-flipper technique. Notably, the Southern-hybridization results indicated a yet unknown allelic heterozygosity in LIP5 in our laboratory strain. Quantitative reverse transcription-PCR experiments demonstrated the absence of LIP5 expression in the homozygous knockout mutants. However, the knock out mutants showed no alteration in the rate of fungal growth, cell and colony morphology under temperature, pH or osmotic stress in comparison to wild type cells. In vitro infection studies using the J774.2 murine macrophagelike cell line revealed no alteration in the virulence of mutant cells. Thus, we conclude that the deletion of LIP5, somewhat surprisingly, has no effect on the physiology or virulence of Ca in our experimental setting.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalActa Biologica Szegediensis
Volume57
Issue number1
Publication statusPublished - Dec 1 2013

Keywords

  • Candida
  • Gene deletion
  • Lipases
  • Virulence

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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