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2017 ; 12
(5
): e0178352
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English Wikipedia
CCL20 secreted from IgA1-stimulated human mesangial cells recruits inflammatory
Th17 cells in IgA nephropathy
#MMPMID28552941
Lu G
; Zhang X
; Shen L
; Qiao Q
; Li Y
; Sun J
; Zhang J
PLoS One
2017[]; 12
(5
): e0178352
PMID28552941
show ga
IgA nephropathy (IgAN) is the most common primary glomerulonephritis
characterized by human mesangial cells (HMC) proliferation and extracellular
matrix expansion associated with immune deposits consisting of
galactose-deficient IgA1. However, how IgA1 contributes to IgAN has yet to be
completely elucidated. In this study, the expression profile of chemokines was
more altered in IgA1-treated HMC than in the control group. CCL20 was
significantly higher either in the serum of IgAN patients or in IgA1-treated HMC.
Further experiments demonstrated that CCR6, the only receptor of CCL20, was
highly expressed in activated T cells. Intracellular staining assay and cytokine
expression profile implied that CCR6+ T cells produced high IL-17 levels.
Transwell experiment immunohistochemistry and immunofluorescence experiments
extensively demonstrated that CCL20 could recruit inflammatory Th17 cells to the
kidneys. These phenomena caused a series of immune inflammatory responses and
further damaged the kidneys. Therefore, HMC stimulated by IgA1 could produce
CCL20 and consequently recruit inflammatory Th17 cells to the kidneys to induce
further lesion in IgA nephropathy.