Compositional and immunobiological analyses of extracellular vesicles released by Candida albicans

Gabriele Vargas, Juliana D B Rocha, Debora Leite Oliveira, Priscila Costa Albuquerque, Susana Frases, Suelen S. Santos, Joshua D. Nosanchuk, Andre Marco Oliveira Gomes, Lia C A S Medeiros, Kildare Miranda, Tiago J P Sobreira, Ernesto S. Nakayasu, Emma A. Arigi, Arturo Casadevall, Allan J. Guimaraes, Marcio L. Rodrigues, Celio Geraldo Freire-de-Lima, Igor C. Almeida, Leonardo Nimrichter

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Summary: The release of extracellular vesicles (EV) by fungal organisms is considered an alternative transport mechanism to trans-cell wall passage of macromolecules. Previous studies have revealed the presence of EV in culture supernatants from fungal pathogens, such as Cryptococcus neoformans, Histoplasma capsulatum, Paracoccidioides brasiliensis, Sporothrix schenckii, Malassezia sympodialis and Candida albicans. Here we investigated the size, composition, kinetics of internalization by bone marrow-derived murine macrophages (MO) and dendritic cells (DC), and the immunomodulatory activity of C.albicansEV. We also evaluated the impact of EV on fungal virulence using the Galleria mellonella larvae model. By transmission electron microscopy and dynamic light scattering, we identified two populations ranging from 50 to 100 nm and 350 to 850nm. Two predominant seroreactive proteins (27kDa and 37kDa) and a group of polydispersed mannoproteins were observed in EV by immunoblotting analysis. Proteomic analysis of C.albicansEV revealed proteins related to pathogenesis, cell organization, carbohydrate and lipid metabolism, response to stress, and several other functions. The major lipids detected by thin-layer chromatography were ergosterol, lanosterol and glucosylceramide. Short exposure of MO to EV resulted in internalization of these vesicles and production of nitric oxide, interleukin (IL)-12, transforming growth factor-beta (TGF-β) and IL-10. Similarly, EV-treated DC produced IL-12p40, IL-10 and tumour necrosis factor-alpha. In addition, EV treatment induced the up-regulation of CD86 and major histocompatibility complex class-II (MHC-II). Inoculation of G.mellonella larvae with EV followed by challenge with C.albicans reduced the number of recovered viable yeasts in comparison with infected larvae control. Taken together, our results demonstrate that C.albicansEV were immunologically active and could potentially interfere with the host responses in the setting of invasive candidiasis.

Original languageEnglish (US)
Pages (from-to)389-407
Number of pages19
JournalCellular Microbiology
Volume17
Issue number3
DOIs
StatePublished - Mar 1 2015
Externally publishedYes

Fingerprint

Candida albicans
Larva
Interleukin-10
Dendritic Cells
Macrophages
Invasive Candidiasis
Sporothrix
Lanosterol
Paracoccidioides
Glucosylceramides
Malassezia
Histoplasma
Ergosterol
Cryptococcus neoformans
Extracellular Vesicles
Interleukins
Carbohydrate Metabolism
Interleukin-12
Thin Layer Chromatography
Major Histocompatibility Complex

ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Virology

Cite this

Vargas, G., Rocha, J. D. B., Oliveira, D. L., Albuquerque, P. C., Frases, S., Santos, S. S., ... Nimrichter, L. (2015). Compositional and immunobiological analyses of extracellular vesicles released by Candida albicans. Cellular Microbiology, 17(3), 389-407. https://doi.org/10.1111/cmi.12374

Compositional and immunobiological analyses of extracellular vesicles released by Candida albicans. / Vargas, Gabriele; Rocha, Juliana D B; Oliveira, Debora Leite; Albuquerque, Priscila Costa; Frases, Susana; Santos, Suelen S.; Nosanchuk, Joshua D.; Gomes, Andre Marco Oliveira; Medeiros, Lia C A S; Miranda, Kildare; Sobreira, Tiago J P; Nakayasu, Ernesto S.; Arigi, Emma A.; Casadevall, Arturo; Guimaraes, Allan J.; Rodrigues, Marcio L.; Freire-de-Lima, Celio Geraldo; Almeida, Igor C.; Nimrichter, Leonardo.

In: Cellular Microbiology, Vol. 17, No. 3, 01.03.2015, p. 389-407.

Research output: Contribution to journalArticle

Vargas, G, Rocha, JDB, Oliveira, DL, Albuquerque, PC, Frases, S, Santos, SS, Nosanchuk, JD, Gomes, AMO, Medeiros, LCAS, Miranda, K, Sobreira, TJP, Nakayasu, ES, Arigi, EA, Casadevall, A, Guimaraes, AJ, Rodrigues, ML, Freire-de-Lima, CG, Almeida, IC & Nimrichter, L 2015, 'Compositional and immunobiological analyses of extracellular vesicles released by Candida albicans', Cellular Microbiology, vol. 17, no. 3, pp. 389-407. https://doi.org/10.1111/cmi.12374
Vargas G, Rocha JDB, Oliveira DL, Albuquerque PC, Frases S, Santos SS et al. Compositional and immunobiological analyses of extracellular vesicles released by Candida albicans. Cellular Microbiology. 2015 Mar 1;17(3):389-407. https://doi.org/10.1111/cmi.12374
Vargas, Gabriele ; Rocha, Juliana D B ; Oliveira, Debora Leite ; Albuquerque, Priscila Costa ; Frases, Susana ; Santos, Suelen S. ; Nosanchuk, Joshua D. ; Gomes, Andre Marco Oliveira ; Medeiros, Lia C A S ; Miranda, Kildare ; Sobreira, Tiago J P ; Nakayasu, Ernesto S. ; Arigi, Emma A. ; Casadevall, Arturo ; Guimaraes, Allan J. ; Rodrigues, Marcio L. ; Freire-de-Lima, Celio Geraldo ; Almeida, Igor C. ; Nimrichter, Leonardo. / Compositional and immunobiological analyses of extracellular vesicles released by Candida albicans. In: Cellular Microbiology. 2015 ; Vol. 17, No. 3. pp. 389-407.
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