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2017 ; 188
(2
): 195-207
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Exacerbation of spontaneous autoimmune nephritis following regulatory T cell
depletion in B cell lymphoma 2-interacting mediator knock-out mice
#MMPMID28152566
Wang YM
; Zhang GY
; Wang Y
; Hu M
; Zhou JJ
; Sawyer A
; Cao Q
; Wang Y
; Zheng G
; Lee VW
; Harris DC
; Alexander SI
Clin Exp Immunol
2017[May]; 188
(2
): 195-207
PMID28152566
show ga
Regulatory T cells (T(regs) ) have been recognized as central mediators for
maintaining peripheral tolerance and limiting autoimmune diseases. The loss of
T(regs) or their function has been associated with exacerbation of autoimmune
disease. However, the temporary loss of T(regs) in the chronic spontaneous
disease model has not been investigated. In this study, we evaluated the role of
T(regs) in a novel chronic spontaneous glomerulonephritis model of B cell
lymphoma 2-interacting mediator (Bim) knock-out mice by transient depleting
T(regs) . Bim is a pro-apoptotic member of the B cell lymphoma 2 (Bcl-2) family.
Bim knock-out (Bim(-/-) ) mice fail to delete autoreactive T cells in thymus,
leading to chronic spontaneous autoimmune kidney disease. We found that T(reg)
depletion in Bim(-/-) mice exacerbated the kidney injury with increased
proteinuria, impaired kidney function, weight loss and greater histological
injury compared with wild-type mice. There was a significant increase in
interstitial infiltrate of inflammatory cells, antibody deposition and tubular
damage. Furthermore, the serum levels of cytokines interleukin (IL)-2, IL-4,
IL-6, IL-10, IL-17?, interferon (IFN)-? and tumour necrosis factor (TNF)-? were
increased significantly after T(reg) depletion in Bim(-/-) mice. This study
demonstrates that transient depletion of T(regs) leads to enhanced self-reactive
T effector cell function followed by exacerbation of kidney disease in the
chronic spontaneous kidney disease model of Bim-deficient mice.
|*Lymphocyte Depletion
[MESH]
|Animals
[MESH]
|Autoimmune Diseases/*immunology/pathology
[MESH]
|Bcl-2-Like Protein 11/deficiency/*genetics
[MESH]