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2017 ; 8
(6
): e2904
Nephropedia Template TP
gab.com Text
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English Wikipedia
Sorafenib tosylate inhibits directly necrosome complex formation and protects in
mouse models of inflammation and tissue injury
#MMPMID28661484
Martens S
; Jeong M
; Tonnus W
; Feldmann F
; Hofmans S
; Goossens V
; Takahashi N
; Bräsen JH
; Lee EW
; Van der Veken P
; Joossens J
; Augustyns K
; Fulda S
; Linkermann A
; Song J
; Vandenabeele P
Cell Death Dis
2017[Jun]; 8
(6
): e2904
PMID28661484
show ga
Necroptosis contributes to the pathophysiology of several inflammatory,
infectious and degenerative disorders. TNF-induced necroptosis involves
activation of the receptor-interacting protein kinases 1 and 3 (RIPK1/3) in a
necrosome complex, eventually leading to the phosphorylation and relocation of
mixed lineage kinase domain like protein (MLKL). Using a high-content screening
of small compounds and FDA-approved drug libraries, we identified the anti-cancer
drug Sorafenib tosylate as a potent inhibitor of TNF-dependent necroptosis.
Interestingly, Sorafenib has a dual activity spectrum depending on its
concentration. In murine and human cell lines it induces cell death, while at
lower concentrations it inhibits necroptosis, without affecting NF-?B activation.
Pull down experiments with biotinylated Sorafenib show that it binds
independently RIPK1, RIPK3 and MLKL. Moreover, it inhibits RIPK1 and RIPK3 kinase
activity. In vivo Sorafenib protects against TNF-induced systemic inflammatory
response syndrome (SIRS) and renal ischemia-reperfusion injury (IRI). Altogether,
we show that Sorafenib can, next to the reported Braf/Mek/Erk and VEGFR pathways,
also target the necroptotic pathway and that it can protect in an acute
inflammatory RIPK1/3-mediated pathology.