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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Arthritis+Res+Ther
2014 ; 16
(2
): R62
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T-helper 17 cell cytokines and interferon type I: partners in crime in systemic
lupus erythematosus?
#MMPMID24598455
Brkic Z
; Corneth OB
; van Helden-Meeuwsen CG
; Dolhain RJ
; Maria NI
; Paulissen SM
; Davelaar N
; van Hamburg JP
; van Daele PL
; Dalm VA
; van Hagen PM
; Hazes JM
; Versnel MA
; Lubberts E
Arthritis Res Ther
2014[Mar]; 16
(2
): R62
PMID24598455
show ga
INTRODUCTION: A hallmark of systemic autoimmune diseases like systemic lupus
erythematosus (SLE) is the increased expression of interferon (IFN) type I
inducible genes, so-called IFN type I signature. Recently, T-helper 17 subset
(Th17 cells), which produces IL-17A, IL-17F, IL-21, and IL-22, has been
implicated in SLE. As CCR6 enriches for Th17 cells, we used this approach to
investigate whether CCR6? memory T-helper cells producing IL-17A, IL-17F, IL-21,
and/or IL-22 are increased in SLE patients and whether this increase is related
to the presence of IFN type I signature. METHODS: In total, 25 SLE patients and
15 healthy controls (HCs) were included. SLE patients were divided into IFN type
I signature-positive (IFN?) (n?=?16) and negative (IFN?) (n?=?9) patients, as
assessed by mRNA expression of IFN-inducible genes (IFIGs) in monocytes.
Expression of IL-17A, IL-17F, IL-21, and IL-22 by CD4?CD45RO?CCR6? T cells (CCR6?
cells) was measured with flow cytometry and compared between IFN?, IFN? patients
and HCs. RESULTS: Increased percentages of IL-17A and IL-17A/IL-17F
double-producing CCR6? cells were observed in IFN? patients compared with IFN?
patients and HCs. IL-17A and IL-17F expression within CCR6? cells correlated
significantly with IFIG expression. In addition, we found significant correlation
between B-cell activating factor of the tumor necrosis family (BAFF)-a factor
strongly correlating with IFN type I?-?and IL-21 producing CCR6? cells.
CONCLUSIONS: We show for the first time higher percentages of IL-17A and
IL-17A/IL-17F double-producing CCR6? memory T-helper cells in IFN? SLE patients,
supporting the hypothesis that IFN type I co-acts with Th17 cytokines in SLE
pathogenesis.