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Modulation of LILRB2 protein and mRNA expressions in septic shock patients and after ex vivo lipopolysaccharide stimulation.

Abstract：

:Septic patients develop immune dysfunctions, the intensities and durations of which are associated with deleterious outcomes. LILRB2 (leukocyte immunoglobulin-like receptors subfamily B, member 2), an inhibitory member of the LILR family of receptors, is known for its immunoregulatory properties. In a microarray study, we identified LILRB2 as an upregulated gene in septic shock patients. On monocytes primed with LPS ex vivo, LILRB2 mRNA and protein expressions were dose-dependently downregulated and subsequently highly upregulated versus non-stimulated cells. This is concordant with clinical data, since both LILRB2 mRNA and protein expressions were significantly increased in septic shock patients at day 3. In a cohort of more than 700 patients, only after septic shock were LILRB2 mRNA levels increased compared with non-infected or less severely infected patients. This was preceded by a phase of downregulated mRNA expression during the first hours after septic shock. Interestingly, the intensity of this decrease was associated with increased risk of death after septic shock. LILRB2 protein and mRNA expressions are deregulated on monocytes after septic shock and this can be reproduced ex vivo after LPS challenge. Considering LILRB2 inhibitory properties, we can hypothesize that LILRB2 may participate in the altered immune response after septic shock.

journal_name

Hum Immunol

journal_title

Human immunology

authors

Venet F,Schilling J,Cazalis MA,Demaret J,Poujol F,Girardot T,Rouget C,Pachot A,Lepape A,Friggeri A,Rimmelé T,Monneret G,Textoris J

doi

10.1016/j.humimm.2017.03.010

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

441-450

issue

5-6

eissn

0198-8859

issn

1879-1166

pii

S0198-8859(17)30050-2

journal_volume

78

pub_type

杂志文章

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