Overlooked Candida glabrata petites are echinocandin tolerant, induce host inflammatory responses, and display poor in vivo fitness.
mBio
; 14(5): e0118023, 2023 Oct 31.
Article
in En
| MEDLINE
| ID: mdl-37772846
ABSTRACT
IMPORTANCE Candida glabrata is a major fungal pathogen, which is able to lose mitochondria and form small and slow-growing colonies, called "petite." This attenuated growth rate has created controversies and questioned the clinical importance of petiteness. Herein, we have employed multiple omics technologies and in vivo mouse models to critically assess the clinical importance of petite phenotype. Our WGS identifies multiple genes potentially underpinning petite phenotype. Interestingly, petite C. glabrata cells engulfed by macrophages are dormant and, therefore, are not killed by the frontline antifungal drugs. Interestingly, macrophages infected with petite cells mount distinct transcriptomic responses. Consistent with our ex vivo observations, mitochondrial-proficient parental strains outcompete petites during systemic and gut colonization. Retrospective examination of C. glabrata isolates identified petite prevalence a rare entity, which can significantly vary from country to country. Collectively, our study overcomes the existing controversies and provides novel insights regarding the clinical relevance of petite C. glabrata isolates.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Candida glabrata
/
Echinocandins
Type of study:
Risk_factors_studies
Limits:
Animals
Language:
En
Journal:
MBio
Year:
2023
Document type:
Article
Affiliation country:
United States