Changwei Gu1, Chongzhi Hou2, Sheng Zhang3. 1. Department of Emergency, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China. 2. Department of General Surgery, Xi'an Children's Hospital, Xi'an, 710002, Shaanxi, China. 3. Department of General Surgery, Xi'an Children's Hospital, Xi'an, 710002, Shaanxi, China. zs880319@126.com.
Abstract
OBJECTIVE AND DESIGN: Sepsis, a systemic inflammatory response syndrome, is still a common cause of death even the patients who are in the intensive care unit. Alleviating septic liver damage may be effective in improving sepsis. Necroptosis and miRNAs have been regarded as a potential target in sepsis. MATERIAL OR SUBJECTS: The aim of this work is to explain the potential role of miR-425-5p in septic liver damage. LPS was intraperitoneal-injection to C57BL/6 mice for sepsis, and hepatocytes treated with septic serum in vitro. H&E staining for histological evaluation, luciferase reporter assay for target validation, and qRT-PCR, WB, and ELISA analysis for assessment of miR-425-5p, RIP1, inflammatory factors, and LDH levels. RESULTS: Down-regulated miR-425-5p and up-regulated RIP1/RIP3 were in LPS-induced sepsis mice. Liver damage, RIP1-mediated necroptosis, IL-1β, and TNF-α were suppressed by miR-425-5p agomiR, but further aggravated by miR-425-5p antagomiR. Furthermore, we demonstrated miR-425-5p targeted the 3'UTR of RIP1 mRNA to inhibit RIP1 expression and activated RIP1 reversed miR-425-5p-induced suppression of necroptosis and inflammation in septic hepatocytes. CONCLUSIONS: The data suggest miR-425-5p negatively controls the RIP1-mediated necroptotic signaling cascades and inflammation, and sepsis-related liver damage. miR-425-5p/RIP1 axis is a potential therapeutic strategy for sepsis-related liver damage through necroptosis and inflammation.
OBJECTIVE AND DESIGN:Sepsis, a systemic inflammatory response syndrome, is still a common cause of death even the patients who are in the intensive care unit. Alleviating septic liver damage may be effective in improving sepsis. Necroptosis and miRNAs have been regarded as a potential target in sepsis. MATERIAL OR SUBJECTS: The aim of this work is to explain the potential role of miR-425-5p in septic liver damage. LPS was intraperitoneal-injection to C57BL/6 mice for sepsis, and hepatocytes treated with septic serum in vitro. H&E staining for histological evaluation, luciferase reporter assay for target validation, and qRT-PCR, WB, and ELISA analysis for assessment of miR-425-5p, RIP1, inflammatory factors, and LDH levels. RESULTS: Down-regulated miR-425-5p and up-regulated RIP1/RIP3 were in LPS-induced sepsismice. Liver damage, RIP1-mediated necroptosis, IL-1β, and TNF-α were suppressed by miR-425-5p agomiR, but further aggravated by miR-425-5p antagomiR. Furthermore, we demonstrated miR-425-5p targeted the 3'UTR of RIP1 mRNA to inhibit RIP1 expression and activated RIP1 reversed miR-425-5p-induced suppression of necroptosis and inflammation in septic hepatocytes. CONCLUSIONS: The data suggest miR-425-5p negatively controls the RIP1-mediated necroptotic signaling cascades and inflammation, and sepsis-related liver damage. miR-425-5p/RIP1 axis is a potential therapeutic strategy for sepsis-related liver damage through necroptosis and inflammation.
Authors: Angara Sureshbabu; Edwin Patino; Kevin C Ma; Kristian Laursen; Eli J Finkelsztein; Oleh Akchurin; Thangamani Muthukumar; Stefan W Ryter; Lorraine Gudas; Augustine M K Choi; Mary E Choi Journal: JCI Insight Date: 2018-06-07
Authors: James A Rickard; Joanne A O'Donnell; Joseph M Evans; Najoua Lalaoui; Ashleigh R Poh; TeWhiti Rogers; James E Vince; Kate E Lawlor; Robert L Ninnis; Holly Anderton; Cathrine Hall; Sukhdeep K Spall; Toby J Phesse; Helen E Abud; Louise H Cengia; Jason Corbin; Sandra Mifsud; Ladina Di Rago; Donald Metcalf; Matthias Ernst; Grant Dewson; Andrew W Roberts; Warren S Alexander; James M Murphy; Paul G Ekert; Seth L Masters; David L Vaux; Ben A Croker; Motti Gerlic; John Silke Journal: Cell Date: 2014-05-08 Impact factor: 41.582