Keyword search (4,163 papers available)

"Massahi S" Authored Publications:

Title Authors PubMed ID
1 Candida albicans exhibits heterogeneous and adaptive cytoprotective responses to anti-fungal compounds Dumeaux V; Massahi S; Bettauer V; Mottola A; Dukovny A; Khurdia SS; Costa ACBP; Omran RP; Simpson S; Xie JL; Whiteway M; Berman J; Hallett MT; 37888959
BIOLOGY
2 A Deep Learning Approach to Capture the Essence of Candida albicans Morphologies Bettauer V; Costa ACBP; Omran RP; Massahi S; Kirbizakis E; Simpson S; Dumeaux V; Law C; Whiteway M; Hallett MT; 35972285
BIOLOGY

 

Title:Candida albicans exhibits heterogeneous and adaptive cytoprotective responses to anti-fungal compounds
Authors:Dumeaux VMassahi SBettauer VMottola ADukovny AKhurdia SSCosta ACBPOmran RPSimpson SXie JLWhiteway MBerman JHallett MT
Link:https://pubmed.ncbi.nlm.nih.gov/37888959/
DOI:10.7554/eLife.81406
Publication:eLife
Keywords:Candida albicanscomputational biologydrug toleranceinfectious diseasemicrobiologyribosome assembly stress responsesingle-cell sequencingsystems biology
PMID:37888959 Category: Date Added:2023-10-27
Dept Affiliation: BIOLOGY
1 Department of Anatomy and Cell Biology, Western University, London, Canada.
2 Department of Biology, Concordia University, Montreal, Canada.
3 Department of Computer Science and Software Engineering, Concordia University, Montreal, Canada.
4 Shmunis School of Biomedical and Cancer Research, Tel Aviv University, Tel Aviv, Israel.
5 Department of Chemical and Systems Biology, Stanford University, Stanford, United States.
6 Department of Biochemistry, Western University, London, Canada.

Description:

Candida albicans, an opportunistic human pathogen, poses a significant threat to human health and is associated with significant socio-economic burden. Current antifungal treatments fail, at least in part, because C. albicans can initiate a strong drug tolerance response that allows some cells to grow at drug concentrations above their minimal inhibitory concentration. To better characterize this cytoprotective tolerance program at the molecular single cell level, we used a nano-liter droplet-based transcriptomics platform to profile thousands of individual fungal cells and establish their subpopulation characteristics in the absence and presence of antifungal drugs. Profiles of untreated cells exhibit heterogeneous expression that correlates with cell cycle stage with distinct metabolic and stress responses. At two days post-fluconazole exposure (a time when tolerance is measurable), surviving cells bifurcate into two major subpopulations: one characterized by the upregulation of genes encoding ribosomal proteins, rRNA processing machinery and mitochondrial cellular respiration capacity, termed the Ribo-dominant (Rd) state; and the other enriched for genes encoding stress responses and related processes, termed the Stress-dominant (Sd) state. This bifurcation persists at 3 and 6 days post treatment. We provide evidence that the Ribosome Assembly Stress Response (RASTR) is activated in these subpopulations and may facilitate cell survival.





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