title: NLRP3 Deficiency Attenuates Renal Fibrosis and Ameliorates Mitochondrial Dysfunction in a Mouse Unilateral Ureteral Obstruction Model of Chronic Kidney Disease.
abstract: Background and Aims.The nucleotide-binding domain and leucine-rich repeat containing PYD-3 (NLRP3) inflammasome has been implicated in the pathogenesis of chronic kidney disease (CKD); however, its exact role in glomerular injury and tubulointerstitial fibrosis is still undefined. The present study was performed to identify the function of NLRP3 in modulating renal injury and fibrosis and the potential involvement of mitochondrial dysfunction in the murine unilateral ureteral obstruction (UUO) model of CKD.Methods.Employing wild-type (WT) and NLRP3-/-mice with or without UUO, we evaluated renal structure, tissue injury, and mitochondrial ultrastructure, as well as expression of some vital molecules involved in the progression of fibrosis, apoptosis, inflammation, and mitochondrial dysfunction.Results.The severe glomerular injury and tubulointerstitial fibrosis induced in WT mice by UUO was markedly attenuated in NLRP3-/-mice as evidenced by blockade of extracellular matrix deposition, decreased cell apoptosis, and phenotypic alterations. Moreover, NLRP3 deletion reversed UUO-induced impairment of mitochondrial morphology and function.Conclusions.NLRP3 deletion ameliorates mitochondrial dysfunction and alleviates renal fibrosis in a murine UUO model of CKD.
authors.affiliation: Division of Nephrology, The Fifth People's Hospital of Shanghai, Fudan University, 128 Ruili Road, Shanghai 200240, China.
authors.forename: Honglei
authors.initials: H
authors.lastname: Guo
authors.affiliation: Division of Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, 639 Zhizaoju Road, Shanghai 200011, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Bi
authors.affiliation: Department of Pediatrics, The 2nd Hospital of Harbin Medical University, Harbin 150086, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Zhou
authors.affiliation: Division of Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, 639 Zhizaoju Road, Shanghai 200011, China.
authors.forename: Shijian
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Division of Nephrology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, 639 Zhizaoju Road, Shanghai 200011, China.
authors.forename: Wei
authors.identifier: 0000-0002-6450-1635
authors.initials: W
authors.lastname: Ding
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D005355:Fibrosis / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D058847:Inflammasomes / Q000378:metabolism*; D007668:Kidney / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D000071199:NLR Family, Pyrin Domain-Containing 3 Protein / Q000172:deficiency* / Q000235:genetics / Q000378:metabolism; D051436:Renal Insufficiency, Chronic / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D015398:Signal Transduction / Q000235:genetics / Q000502:physiology; D014517:Ureteral Obstruction / Q000378:metabolism / Q000473:pathology
chemical_list: D058847:Inflammasomes; D000071199:NLR Family, Pyrin Domain-Containing 3 Protein; C492716:Nlrp3 protein, mouse