Journal
NEPHROLOGY
Volume 22, Issue 2, Pages 101-106Publisher
WILEY
DOI: 10.1111/nep.12957
Keywords
fibroblast growth factor-inducible 14; glomerular basement membrane; lupus nephritis; proinflammatory cytokines; tumour necrosis factor-related weak inducer of apoptosis
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Funding
- National Natural Science Foundation of China [81472876, 81630081]
- Fundamental Research Funds for the Central Universities [2015qngz01]
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As one of the manifestations of patients with systemic lupus erythematosus, lupus nephritis (LN) has high morbidity and mortality. Although the explicit mechanism of LN remains to be fully elucidated, there is increasing evidence to support the notion that tumour necrosis factor-related weak inducer of apoptosis (TWEAK), acting via its sole receptor, fibroblast growth factor-inducible 14 (Fn14), plays a pivotal role in such pathologic process. TWEAK/Fn14 interactions occur prominently in kidneys of LN, inducing inflammatory responses, angiogenesis, mesangial proliferation, filtration barrier injuries, renal fibrosis, etc. This review will specify the important roles of TWEAK/Fn14 pathway in the pathogenesis of LN with experimental data from cellular and animal models. Additionally, the raised levels of urinary and serum soluble TWEAK correlate with renal disease activity in patients with LN. The neutralizing antibodies targeting TWEAK or other approaches inhibiting TWEAK/Fn14 signals can attenuate renal damage in the murine lupus models. Therefore, to focus on TWEAK/Fn14 signalling may be promising in both clinical evaluation and the treatment of patients with LN. Summary at a Glance This review describes evidence supporting a pathogenic role for tumour necrosis factor-related weak inducer of apoptosis (TWEAK) in human and experimental lupus nephritis. Current understanding of TWEAK is integrated with known mechanisms of renal inflammation and fibrosis. This is highly relevant given early stage clinical studies with anti-TWEAK monoclonal antibodies.
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