Journal article 945 views 187 downloads
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence
G3 Genes|Genomes|Genetics, Volume: 6, Issue: 11
Swansea University Authors: Steven Kelly, Josie Parker
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DOI (Published version): 10.1534/g3.116.033969
Abstract
Candida albicans is an opportunistic fungus responsible for the majority of systemic fungal infections. Multiple factors contribute to C. albicans pathogenicity. C. albicans strains lacking CaArv1 are avirulent. Arv1 has a conserved Arv1 homology domain (AHD) that has a zinc-binding domain containin...
Published in: | G3 Genes|Genomes|Genetics |
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ISSN: | 2160-1836 |
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2016
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URI: | https://cronfa.swan.ac.uk/Record/cronfa31346 |
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2021-10-26T16:37:40.6065454 v2 31346 2016-12-01 Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence b17cebaf09b4d737b9378a3581e3de93 Steven Kelly Steven Kelly true false e563ed4e1c7db8d1e131fb78a5f8d0d5 Josie Parker Josie Parker true false 2016-12-01 Candida albicans is an opportunistic fungus responsible for the majority of systemic fungal infections. Multiple factors contribute to C. albicans pathogenicity. C. albicans strains lacking CaArv1 are avirulent. Arv1 has a conserved Arv1 homology domain (AHD) that has a zinc-binding domain containing two cysteine clusters. Here, we explored the role of the CaAHD and zinc-binding motif in CaArv1-dependent virulence. Overall, we found that the CaAHD was necessary but not sufficient for cells to be virulent, whereas the zinc-binding domain was essential, as Caarv1/Caarv1 cells expressing the full-length zinc-binding domain mutants, Caarv1C3S and Caarv1C28S, were avirulent. Phenotypically, we found a direct correlation between the avirulence of Caarv1/Caarv1, Caarrv1AHD, Caarv1C3S, and Caarv1C28S cells and defects in bud site selection, septa formation and localization, and hyphal formation and elongation. Importantly, all avirulent mutant strains lacked the ability to maintain proper sterol distribution. Overall, our results have established the importance of the AHD and zinc-binding domain in fungal invasion, and have correlated an avirulent phenotype with the inability to maintain proper sterol distribution. Journal Article G3 Genes|Genomes|Genetics 6 11 2160-1836 virulence, Candida, sterol, hyphae, lipid 31 12 2016 2016-12-31 10.1534/g3.116.033969 COLLEGE NANME COLLEGE CODE Swansea University 2021-10-26T16:37:40.6065454 2016-12-01T13:43:58.3577507 Faculty of Medicine, Health and Life Sciences Swansea University Medical School - Medicine P. McCourt 1 H.-Y. Liu 2 J. E. Parker 3 C. Gallo-Ebert 4 M. Donigan 5 A. Bata 6 C. Giordano 7 Steven Kelly 8 J. T. Nickels 9 Josie Parker 10 0031346-10012017160636.pdf kelly3455.full.pdf 2017-01-10T16:06:36.3230000 Output 1412423 application/pdf Version of Record true 2017-01-10T00:00:00.0000000 This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License true |
title |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence |
spellingShingle |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence Steven Kelly Josie Parker |
title_short |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence |
title_full |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence |
title_fullStr |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence |
title_full_unstemmed |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence |
title_sort |
Proper Sterol Distribution Is Required for Candida albicans Hyphal Formation and Virulence |
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b17cebaf09b4d737b9378a3581e3de93 e563ed4e1c7db8d1e131fb78a5f8d0d5 |
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b17cebaf09b4d737b9378a3581e3de93_***_Steven Kelly e563ed4e1c7db8d1e131fb78a5f8d0d5_***_Josie Parker |
author |
Steven Kelly Josie Parker |
author2 |
P. McCourt H.-Y. Liu J. E. Parker C. Gallo-Ebert M. Donigan A. Bata C. Giordano Steven Kelly J. T. Nickels Josie Parker |
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G3 Genes|Genomes|Genetics |
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Candida albicans is an opportunistic fungus responsible for the majority of systemic fungal infections. Multiple factors contribute to C. albicans pathogenicity. C. albicans strains lacking CaArv1 are avirulent. Arv1 has a conserved Arv1 homology domain (AHD) that has a zinc-binding domain containing two cysteine clusters. Here, we explored the role of the CaAHD and zinc-binding motif in CaArv1-dependent virulence. Overall, we found that the CaAHD was necessary but not sufficient for cells to be virulent, whereas the zinc-binding domain was essential, as Caarv1/Caarv1 cells expressing the full-length zinc-binding domain mutants, Caarv1C3S and Caarv1C28S, were avirulent. Phenotypically, we found a direct correlation between the avirulence of Caarv1/Caarv1, Caarrv1AHD, Caarv1C3S, and Caarv1C28S cells and defects in bud site selection, septa formation and localization, and hyphal formation and elongation. Importantly, all avirulent mutant strains lacked the ability to maintain proper sterol distribution. Overall, our results have established the importance of the AHD and zinc-binding domain in fungal invasion, and have correlated an avirulent phenotype with the inability to maintain proper sterol distribution. |
published_date |
2016-12-31T13:08:16Z |
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11.247077 |