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2016 ; 64
(5
): 1128-1136
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Interleukin-30 (IL27p28) alleviates experimental sepsis by modulating cytokine
profile in NKT cells
#MMPMID26767500
Yan J
; Mitra A
; Hu J
; Cutrera JJ
; Xia X
; Doetschman T
; Gagea M
; Mishra L
; Li S
J Hepatol
2016[May]; 64
(5
): 1128-1136
PMID26767500
show ga
BACKGROUND & AIMS: Sepsis is an acute systemic inflammatory response to infection
associated with high patient mortality (28-40%). We hypothesized that interleukin
(IL)-30, a novel cytokine protecting mice against liver injury resulting from
inflammation, would generate a protective effect against systemic inflammation
and sepsis-induced death. METHODS: Sepsis was induced by lipopolysaccharide (LPS)
or cecal ligation and puncture (CLP). The inhibitory effects of IL-30 on septic
inflammation and associated therapeutic effects were determined in wild-type,
IL30 (p28)(-/-), IL10(-/-), and CD1d(-/-) mice. RESULTS: Mice treated with pIL30
gene therapy or recombinant IL-30 protein (rIL30) were protected from LPS-induced
septic shock or CLP-induced polymicrobial sepsis and showed markedly less liver
damage and lymphocyte apoptosis than control septic mice. The resulting reduction
in mortality was mediated through attenuation of the systemic pro-inflammatory
response and augmentation of bacterial clearance. Mice lacking IL-30 were more
sensitive to LPS-induced sepsis. Natural killer-like T cells (NKT) produced much
higher levels of IL-10 and lower levels of interferon-gamma and tumor necrosis
factor-alpha in IL-30-treated septic mice than in control septic mice. Likewise,
deficiency in IL-10 or NKT cells abolished the protective role of IL-30 against
sepsis. Furthermore, IL-30 induced IL-10 production in purified and
LPS-stimulated NKT cells. Blocking IL-6R or gp130 inhibited IL-30 mediated IL-10
production. CONCLUSIONS: IL-30 is important in modulating production of NKT
cytokines and subsequent NKT cell-mediated immune regulation of other cells.
Therefore, IL-30 has a role in prevention and treatment of sepsis via modulation
of cytokine production by NKT.