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Acute pancreatitis is a common threat to human health. Caerulin provokes severe inflammations, causing injuries to surrounding pancreatic cells. TNF receptor-associated factor 3 (TRAF3) is a highly versatile regulator of immune response. The current study aims to understand the potential effect of TRAF3 on caerulin-induced pro-inflammatory responses. In the primary-cultured mouse bone marrow-derived macrophages (BMDMs), caerulin induced TRAF3 protein stabilization, which formed a complex with mitogen-activated protein kinase kinase 3 (MKK3) to mediate downstream p38 activation. Lentiviral shRNA-mediated TRAF3 stable knockdown significantly attenuated caerulin-induced MKK3-p38 activation and production of several key pro-inflammatory cytokines, including interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and IL-17. Remarkably, TRAF3 knockdown in caerulin-stimulated BMDMs also alleviated cytotoxicity to Panc02 and primary mouse pancreatic cells. Thus, TRAF3 is required for caerulin-induced p38 activation and macrophage-mediated pro-inflammatory responses. TRAF3 expression in macrophages could be a novel therapeutic target protein for the treatment of acute pancreatitis.
Pubmed ID: 28988112
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Software used for Bio-Rad imaging systems to acquire, quantitate, and analyze a variety of data. The software allows automatic configuration of imaging systems with appropriate filters, lasers, LEDs, and other illumination sources. It also contains tools for automated analysis of tests and assays such as 1-D electrophoretic gels, western blots, and colony counts.
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