Myeloid cell deficiency of p38γ/p38δ protects against candidiasis and regulates antifungal immunity.

Abstract:

:Candida albicans is a frequent aetiologic agent of sepsis associated with high mortality in immunocompromised patients. Developing new antifungal therapies is a medical need due to the low efficiency and resistance to current antifungal drugs. Here, we show that p38γ and p38δ regulate the innate immune response to C. albicans We describe a new TAK1-TPL2-MKK1-ERK1/2 pathway in macrophages, which is activated by Dectin-1 engagement and positively regulated by p38γ/p38δ. In mice, p38γ/p38δ deficiency protects against C. albicans infection by increasing ROS and iNOS production and thus the antifungal capacity of neutrophils and macrophages, and by decreasing the hyper-inflammation that leads to severe host damage. Leucocyte recruitment to infected kidneys and production of inflammatory mediators are decreased in p38γ/δ-null mice, reducing septic shock. p38γ/p38δ in myeloid cells are critical for this effect. Moreover, pharmacological inhibition of p38γ/p38δ in mice reduces fungal burden, revealing that these p38MAPKs may be therapeutic targets for treating C. albicans infection in humans.

journal_name

EMBO Mol Med

journal_title

EMBO molecular medicine

authors

Alsina-Beauchamp D,Escós A,Fajardo P,González-Romero D,Díaz-Mora E,Risco A,Martín-Serrano MA,Del Fresno C,Dominguez-Andrés J,Aparicio N,Zur R,Shpiro N,Brown GD,Ardavín C,Netea MG,Alemany S,Sanz-Ezquerro JJ,Cuenda A

doi

10.15252/emmm.201708485

subject

Has Abstract

pub_date

2018-05-01 00:00:00

issue

5

eissn

1757-4676

issn

1757-4684

pii

emmm.201708485

journal_volume

10

pub_type

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