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The membrane attack complex as an inflammatory trigger

Morgan, Bryan Paul 2016. The membrane attack complex as an inflammatory trigger. Immunobiology 221 (6) , pp. 747-751. 10.1016/j.imbio.2015.04.006

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Abstract

The final common pathway of all routes of complement activation involves the non-enzymatic assembly of a complex comprising newly formed C5b with the plasma proteins C6, C7, C8 and C9. When assembly occurs on a target cell membrane the forming complex inserts into and through the bilayer to create a pore, the membrane attack complex (MAC). On some targets, pore formation causes rapid lytic destruction; however, most nucleated cell targets resist lysis through a combination of ion pumps, membrane regulators and active recovery processes. Cells survive but not without consequence. The MAC pore causes ion fluxes and directly or indirectly impacts several important signalling pathways that in turn activate a diverse series of events in the cell, many of which are highly pro-inflammatory. Although this non-lytic, pro-inflammatory role of MAC has been recognised for thirty years, no consensus signalling pathway has emerged. Recent work, summarised here, has implicated specific signalling routes and, in some cells, inflammasome involvement, opening the door to novel approaches to therapy in complement-driven pathologies.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Complement; Membrane attack; Cell activation
Publisher: Elsevier
ISSN: 0171-2985
Date of Acceptance: 20 April 2015
Last Modified: 04 Jun 2017 08:51
URI: http://orca-mwe.cf.ac.uk/id/eprint/86271

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