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α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans

BACKGROUND: Vulvovaginal candidiasis is a common superficial candidiasis; however, a host’s immunological mechanism against vaginal Candida infection remains unknown. OBJECTIVES: In this study, we aimed to elucidate the effect of iNKT cell activation on vulvovaginal candidiasis. METHODS: Using a vul...

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Autores principales: Abe, Masahiro, Kinjo, Yuki, Sadamoto, Sota, Shinozaki, Minoru, Nagi, Minoru, Shibuya, Kazutoshi, Miyazaki, Yoshitsugu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8594805/
https://www.ncbi.nlm.nih.gov/pubmed/34784362
http://dx.doi.org/10.1371/journal.pone.0259306
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author Abe, Masahiro
Kinjo, Yuki
Sadamoto, Sota
Shinozaki, Minoru
Nagi, Minoru
Shibuya, Kazutoshi
Miyazaki, Yoshitsugu
author_facet Abe, Masahiro
Kinjo, Yuki
Sadamoto, Sota
Shinozaki, Minoru
Nagi, Minoru
Shibuya, Kazutoshi
Miyazaki, Yoshitsugu
author_sort Abe, Masahiro
collection PubMed
description BACKGROUND: Vulvovaginal candidiasis is a common superficial candidiasis; however, a host’s immunological mechanism against vaginal Candida infection remains unknown. OBJECTIVES: In this study, we aimed to elucidate the effect of iNKT cell activation on vulvovaginal candidiasis. METHODS: Using a vulvovaginal candidiasis model with estrogenized mice, we evaluated the fungal burden and number of leukocyte infiltrations in the vaginal lavage of wild-type C57BL/6J mice after Candida albicans inoculation. One day before C. albicans inoculation, α-galactosylceramide (the α-GalCer group) or sterile phosphate-buffered saline (the sham group) was intraperitoneally injected into the mice. We also evaluated the level of antimicrobial peptide S100A8 in the vaginal lavage and analyzed the correlation between S100A8 concentration and the number of vaginal leukocyte infiltrations. Moreover, the number of uterine and vaginal immune cells were evaluated using flow cytometry. RESULTS: The number of vaginal leukocyte infiltrations was significantly higher in the α-GalCer group than in the sham group 3 days after C. albicans inoculation. In addition, the fungal burden was significantly lower in the α-GalCer group than the sham group at 7 days after inoculation. In the analysis of S100A8 concentration of vaginal lavage, there were no significant differences between these two groups, although S100A8 concentration and the number of vaginal leukocyte infiltrations were positively correlated in the α-GalCer group. Moreover, the number of vaginal iNKT cells, NK cells and CD8(+) T-cells was significantly higher in the α-GalCer group 3 days after inoculation. CONCLUSIONS: α-GalCer-stimulated iNKT cells likely play a protective role against vulvovaginal candidiasis.
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spelling pubmed-85948052021-11-17 α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans Abe, Masahiro Kinjo, Yuki Sadamoto, Sota Shinozaki, Minoru Nagi, Minoru Shibuya, Kazutoshi Miyazaki, Yoshitsugu PLoS One Research Article BACKGROUND: Vulvovaginal candidiasis is a common superficial candidiasis; however, a host’s immunological mechanism against vaginal Candida infection remains unknown. OBJECTIVES: In this study, we aimed to elucidate the effect of iNKT cell activation on vulvovaginal candidiasis. METHODS: Using a vulvovaginal candidiasis model with estrogenized mice, we evaluated the fungal burden and number of leukocyte infiltrations in the vaginal lavage of wild-type C57BL/6J mice after Candida albicans inoculation. One day before C. albicans inoculation, α-galactosylceramide (the α-GalCer group) or sterile phosphate-buffered saline (the sham group) was intraperitoneally injected into the mice. We also evaluated the level of antimicrobial peptide S100A8 in the vaginal lavage and analyzed the correlation between S100A8 concentration and the number of vaginal leukocyte infiltrations. Moreover, the number of uterine and vaginal immune cells were evaluated using flow cytometry. RESULTS: The number of vaginal leukocyte infiltrations was significantly higher in the α-GalCer group than in the sham group 3 days after C. albicans inoculation. In addition, the fungal burden was significantly lower in the α-GalCer group than the sham group at 7 days after inoculation. In the analysis of S100A8 concentration of vaginal lavage, there were no significant differences between these two groups, although S100A8 concentration and the number of vaginal leukocyte infiltrations were positively correlated in the α-GalCer group. Moreover, the number of vaginal iNKT cells, NK cells and CD8(+) T-cells was significantly higher in the α-GalCer group 3 days after inoculation. CONCLUSIONS: α-GalCer-stimulated iNKT cells likely play a protective role against vulvovaginal candidiasis. Public Library of Science 2021-11-16 /pmc/articles/PMC8594805/ /pubmed/34784362 http://dx.doi.org/10.1371/journal.pone.0259306 Text en © 2021 Abe et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Abe, Masahiro
Kinjo, Yuki
Sadamoto, Sota
Shinozaki, Minoru
Nagi, Minoru
Shibuya, Kazutoshi
Miyazaki, Yoshitsugu
α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans
title α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans
title_full α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans
title_fullStr α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans
title_full_unstemmed α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans
title_short α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans
title_sort α-galactosylceramide-stimulated invariant natural killer t-cells play a protective role in murine vulvovaginal candidiasis by candida albicans
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8594805/
https://www.ncbi.nlm.nih.gov/pubmed/34784362
http://dx.doi.org/10.1371/journal.pone.0259306
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