Umeå universitets logga

umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Biphasic zinc compartmentalisation in a human fungal pathogen
Umeå universitet, Medicinska fakulteten, Institutionen för molekylärbiologi (Medicinska fakulteten). Umeå universitet, Medicinska fakulteten, Molekylär Infektionsmedicin, Sverige (MIMS). Research Group Microbial Immunology, Leibniz Institute for Natural Product Research and Infection Biology–Hans Knoell Institute, Jena, Germany; Center for Sepsis Control and Care (CSCC), University Hospital, Jena, Germany.
Visa övriga samt affilieringar
2018 (Engelska)Ingår i: PLoS Pathogens, ISSN 1553-7366, E-ISSN 1553-7374, Vol. 14, nr 5, artikel-id e1007013Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Nutritional immunity describes the host-driven manipulation of essential micronutrients, including iron, zinc and manganese. To withstand nutritional immunity and proliferate within their hosts, pathogenic microbes must express efficient micronutrient uptake and homeostatic systems. Here we have elucidated the pathway of cellular zinc assimilation in the major human fungal pathogen Candida albicans. Bioinformatics analysis identified nine putative zinc transporters: four cytoplasmic-import Zip proteins (Zrt1, Zrt2, Zrt3 and orf19.5428) and five cytoplasmic-export ZnT proteins (orf19.1536/Zrc1, orf19.3874, orf19.3769, orf19.3132 and orf19.52). Only Zrt1 and Zrt2 are predicted to localise to the plasma membrane and here we demonstrate that Zrt2 is essential for C. albicans zinc uptake and growth at acidic pH. In contrast, ZRT1 expression was found to be highly pH dependent and could support growth of the ZRT2-null strain at pH 7 and above. This regulatory paradigm is analogous to the distantly related pathogenic mould, Aspergillus fumigatus, suggesting that pH-adaptation of zinc transport may be conserved in fungi and we propose that environmental pH has shaped the evolution of zinc import systems in fungi. Deletion of C. albicans ZRT2 reduced kidney fungal burden in wild type, but not in mice lacking the zinc-chelating antimicrobial protein calprotectin. Inhibition of zrt2 Delta growth by neutrophil extracellular traps was calprotectin-dependent. This suggests that, within the kidney, C. albicans growth is determined by pathogen-Zrt2 and host-calprotectin. As well as serving as an essential micronutrient, zinc can also be highly toxic and we show that C. albicans deals with this potential threat by rapidly compartmentalising zinc within vesicular stores called zincosomes. In order to understand mechanistically how this process occurs, we created deletion mutants of all five ZnT-type transporters in C. albicans. Here we show that, unlike in Saccharomyces cerevisiae, C. albicans Zrc1 mediates zinc tolerance via zincosomal zinc compartmentalisation. This novel transporter was also essential for virulence and liver colonisation in vivo. In summary, we show that zinc homeostasis in a major human fungal pathogen is a multi-stage process initiated by Zrtl/Zrt2-cellular import, followed by Zrcl-dependent intracellular compartmentalisation.

Ort, förlag, år, upplaga, sidor
PUBLIC LIBRARY SCIENCE , 2018. Vol. 14, nr 5, artikel-id e1007013
Nationell ämneskategori
Mikrobiologi
Identifikatorer
URN: urn:nbn:se:umu:diva-150701DOI: 10.1371/journal.ppat.1007013ISI: 000434026400017PubMedID: 29727465Scopus ID: 2-s2.0-85048007172OAI: oai:DiVA.org:umu-150701DiVA, id: diva2:1245414
Tillgänglig från: 2018-09-05 Skapad: 2018-09-05 Senast uppdaterad: 2023-03-23Bibliografiskt granskad

Open Access i DiVA

fulltext(9970 kB)278 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 9970 kBChecksumma SHA-512
07b1384c065eedfdd715074fc8c6ec1aa8543b49dfecd5f949a41d5cb5526737d3d2827db00901185ded3cfc05ca7288250dafac7ec99e88f5bc8addcd78a1d7
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextPubMedScopus

Person

Niemiec, Maria JoannaYellagunda, SujanUrban, Constantin F.

Sök vidare i DiVA

Av författaren/redaktören
Niemiec, Maria JoannaAnderson, AndrewYellagunda, SujanBallou, Elizabeth R.Urban, Constantin F.Wilson, Duncan
Av organisationen
Institutionen för molekylärbiologi (Medicinska fakulteten)Molekylär Infektionsmedicin, Sverige (MIMS)Institutionen för klinisk mikrobiologiUmeå Centre for Microbial Research (UCMR)
I samma tidskrift
PLoS Pathogens
Mikrobiologi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 278 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
pubmed
urn-nbn

Altmetricpoäng

doi
pubmed
urn-nbn
Totalt: 705 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf