Phenotypic Switching and Genetic Diversity of Cryptococcus neoformans
نویسندگان
چکیده
منابع مشابه
Genetic and phenotypic characterization of capsule mutants of Cryptococcus neoformans.
Stable mutants with reduced capacity to produce capsules were isolated from suspensions of Cryptococcus neoformans after treatment of the wild type with a mutagen. The mutants could be assigned one of two phenotypes, hypocapsular or acapsular. Hypocapsular mutants were immunochemically and physicochemically indistinguishable from the wild type, whereas acapsular mutants lacked a major capsular ...
متن کاملPhenotypic switching of Cryptococcus neoformans occurs in vivo and influences the outcome of infection.
Phenotypic switching has been linked to the virulence of many pathogens, including fungi. However, it has not been conclusively shown to occur in vivo or to influence the outcome of infection. Cryptococcus neoformans undergoes phenotypic switching in vitro to colony types that differ in their virulence in mice. In this study, we asked whether C. neoformans undergoes phenotypic switching in vivo...
متن کاملPhenotypic switching and its implications for the pathogenesis of Cryptococcus neoformans.
Phenotypic switching has been described in several strains of Cryptococcus neoformans. It occurs in vivo during chronic infection and is associated with differential gene expression and changes in virulence. The switch involves changes in the polysaccharide capsule and cell wall that affect the yeast's ability to resist phagocytosis. In addition, the phenotypic switch variants elicit qualitativ...
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More than 110 years of study of the Cryptococcus neoformans and Cryptococcus gattii species complex has resulted in an enormous accumulation of fundamental and applied biological and clinical knowledge. Recent developments in our understanding of the diversity within the species complex are presented, emphasizing the intraspecific complexity, which includes species, microspecies, hybrids, serot...
متن کاملIt infects me, it infects me not: phenotypic switching in the fungal pathogen Cryptococcus neoformans.
Phenotypic switching has been observed in both prokaryotes and eukaryotes and involves stochastic switching between two or more alternative and heritable phenotypes, usually distinguished by surface antigenicity. This strategy, generally adopted by pathogens to escape recognition by the immune system and to adapt to a hostile host environment, results from spontaneous alterations in gene expres...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 2001
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.39.6.2060-2064.2001