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Tan, Yan, Tan, Si-Wei, Fan, Bo-Ya, Li, Lei, Zhou, Yuan-Guo. (1397). Hemin Induces the Activation of NLRP3 Inflammasome in N9 Microglial Cells. سامانه مدیریت نشریات علمی, 15(2), 122-132. doi: 10.22034/iji.2018.39376
Yan Tan; Si-Wei Tan; Bo-Ya Fan; Lei Li; Yuan-Guo Zhou. "Hemin Induces the Activation of NLRP3 Inflammasome in N9 Microglial Cells". سامانه مدیریت نشریات علمی, 15, 2, 1397, 122-132. doi: 10.22034/iji.2018.39376
Tan, Yan, Tan, Si-Wei, Fan, Bo-Ya, Li, Lei, Zhou, Yuan-Guo. (1397). 'Hemin Induces the Activation of NLRP3 Inflammasome in N9 Microglial Cells', سامانه مدیریت نشریات علمی, 15(2), pp. 122-132. doi: 10.22034/iji.2018.39376
Tan, Yan, Tan, Si-Wei, Fan, Bo-Ya, Li, Lei, Zhou, Yuan-Guo. Hemin Induces the Activation of NLRP3 Inflammasome in N9 Microglial Cells. سامانه مدیریت نشریات علمی, 1397; 15(2): 122-132. doi: 10.22034/iji.2018.39376

Hemin Induces the Activation of NLRP3 Inflammasome in N9 Microglial Cells

Iranian Journal of Immunology
مقاله 4، دوره 15، شماره 2، شهریور 2018، صفحه 122-132    اصل مقاله (536.31 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22034/iji.2018.39376
نویسندگان
Yan Tan1، 2؛ Si-Wei Tan1؛ Bo-Ya Fan3؛ Lei Li* 2؛ Yuan-Guo Zhou* 1
1Molecular Biology Center, State Key Laboratory of Trauma, Burn, and Combined Injury, Institute of Surgery Research and Daping Hospital, Army Medical University, Chongqing, China
2Department of Infection and Immunity, State Key Laboratory of Trauma, Burn, and Combined Injury, Institute of Surgery Research and Daping Hospital, Army Medical University, Chongqing, China
3Department of Clinical Medicine, Shandong University, Jinan, China
چکیده
Background: Hemin is an important sterile component that induces a neuroinflammatory response after intracerebral hemorrhage, in which NLRP3 inflammasome activation has also proved to be involved. Although microglial activation acts as a key contributor in the neuroinflammatory response, the relationship between hemin and NLRP3 in microglia remains poorly understood. Objective: To investigate whether or not hemin regulates microglia-mediated secondary injury through activating the NLRP3/caspase-1 signaling pathway in microglia. Methods: In this study, N9 microglial cells were treated with hemin, and subsequently used to detect the production of caspase-1 p10 and NLRP3 inflammasome assembly. An ELISA was subsequently performed to measure the secretion of IL-1β. Results: It was found that the production of activated caspase-1 was dose- and time-dependent with regards to hemin. Moreover, hemin was observed to be capable of inducing the assembly of the NLRP3 inflammasome without any increase in IL-1β. Similarly, the supernatant of hemin-treated primary microglial cells did not increase in IL-1β secretion. Furthermore, hemin-induced NLRP3 inflammasome activation did not significantly affect pyroptosis. Conclusion: Hemin is a potential sterile danger signal molecule that can induce inflammasome activation without directly mediating inflammation damage on microglia.
کلیدواژه‌ها
Caspase-1؛ Hemin؛ Microglia؛ NLRP3 Inflammasome
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