Acute Kidney Injury Induced Lupus Exacerbation Through the Enhanced Neutrophil Extracellular Traps (and Apoptosis) in Fcgr2b Deficient Lupus Mice With Renal Ischemia Reperfusion Injury.

Saisorn, Wilasinee, Saithong, Supichcha, Phuengmaung, Pornpimol, Udompornpitak, Kanyarat, Bhunyakarnjanarat, Thansita, Visitchanakun, Peerapat, Chareonsappakit, Awirut, Pisitkun, Prapaporn, Chiewchengchol, Direkrit ORCID: 0000-0003-1824-7012 and Leelahavanichkul, Asada (2021) Acute Kidney Injury Induced Lupus Exacerbation Through the Enhanced Neutrophil Extracellular Traps (and Apoptosis) in Fcgr2b Deficient Lupus Mice With Renal Ischemia Reperfusion Injury. Frontiers in immunology, 12. 669162-.

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Official URL: http://dx.doi.org/10.3389/fimmu.2021.669162

Abstract

Renal ischemia is the most common cause of acute kidney injury (AKI) that might be exacerbate lupus activity through neutrophil extracellular traps (NETs) and apoptosis. Here, the renal ischemia reperfusion injury (I/R) was performed in Fc gamma receptor 2b deficient (Fcgr2b-/-) lupus mice and the <i>in vitro</i> experiments. At 24 h post-renal I/R injury, NETs in peripheral blood neutrophils and in kidneys were detected using myeloperoxidase (MPO), neutrophil elastase (NE) and citrullinated histone H3 (CitH3), as well as kidney apoptosis (activating caspase-3), which were prominent in Fcgr2b-/- mice more compared to wild-type (WT). After 120 h renal-I/R injury, renal NETs (using MPO and NE) were non-detectable, whereas glomerular immunoglobulin (Ig) deposition and serum anti-dsDNA were increased in Fcgr2b-/- mice. These results imply that renal NETs at 24 h post-renal I/R exacerbated the lupus nephritis at 120 h post-renal I/R injury in Fcgr2b-/- lupus mice. Furthermore, a Syk inhibitor attenuated NETs, that activated by phorbol myristate acetate (PMA; a NETs activator) or lipopolysaccharide (LPS; a potent inflammatory stimulator), more prominently in Fcgr2b-/- neutrophils than the WT cells as determined by dsDNA, <i>PAD4</i> and MPO. In addition, the inhibitors against Syk and PAD4 attenuated lupus characteristics (serum creatinine, proteinuria, and anti-dsDNA) in Fcgr2b-/- mice at 120 h post-renal I/R injury. In conclusion, renal I/R in Fcgr2b-/- mice induced lupus exacerbation at 120 h post-I/R injury partly because Syk-enhanced renal NETs led to apoptosis-induced anti-dsDNA, which was attenuated by a Syk inhibitor.

Item Type:	Article
Uncontrolled Keywords:	Kidney, Neutrophils, Animals, Mice, Inbred C57BL, Mice, Knockout, Mice, Lupus Nephritis, Reperfusion Injury, Disease Models, Animal, Disease Progression, Receptors, IgG, Protein Kinase Inhibitors, Apoptosis, Time Factors, Female, Acute Kidney Injury, Phosphodiesterase 4 Inhibitors, Extracellular Traps, Syk Kinase
Divisions:	Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	23 Dec 2021 16:42
Last Modified:	01 Mar 2024 13:23
DOI:	10.3389/fimmu.2021.669162
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3145996