PMID- 22682109 OWN - NLM STAT- MEDLINE DCOM- 20121128 LR - 20220309 IS - 0968-0004 (Print) IS - 0968-0004 (Linking) VI - 37 IP - 8 DP - 2012 Aug TI - Eaten alive! Cell death by primary phagocytosis: 'phagoptosis'. PG - 325-32 LID - 10.1016/j.tibs.2012.05.002 [doi] AB - Phagoptosis, also called primary phagocytosis, is a recently recognised form of cell death caused by phagocytosis of viable cells, resulting in their destruction. It is provoked by exposure of 'eat-me' signals and/or loss of 'don't-eat-me' signals by viable cells, causing their phagocytosis by phagocytes. Phagoptosis mediates turnover of erythrocytes, neutrophils and other cells, and thus is quantitatively one of the main forms of cell death in the body. It defends against pathogens and regulates inflammation and immunity. However, recent results indicate that inflamed microglia eat viable brain neurons in models of neurodegeneration, and cancer cells can evade phagocytosis by expressing a 'don't-eat-me' signal, suggesting that too much or too little phagoptosis can contribute to pathology. This review provides an overview of the molecular signals that regulate phagoptosis and the physiological and pathological circumstances in which it has been observed. CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved. FAU - Brown, Guy C AU - Brown GC AD - Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK. gcb@mole.bio.cam.ac.uk FAU - Neher, Jonas J AU - Neher JJ LA - eng GR - RG50995/Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20120607 PL - England TA - Trends Biochem Sci JT - Trends in biochemical sciences JID - 7610674 RN - 0 (Antigens, Surface) RN - 0 (Receptors, Cell Surface) SB - IM MH - Animals MH - Antigens, Surface/chemistry MH - Cell Death MH - Cell Survival MH - Erythrocytes/chemistry/pathology MH - Humans MH - Inflammation/pathology MH - Microglia/chemistry/pathology MH - Neurodegenerative Diseases/*pathology MH - Neurons/chemistry/*pathology MH - Phagocytes/chemistry MH - *Phagocytosis MH - Receptors, Cell Surface/chemistry MH - Signal Transduction EDAT- 2012/06/12 06:00 MHDA- 2012/12/10 06:00 CRDT- 2012/06/12 06:00 PHST- 2012/03/05 00:00 [received] PHST- 2012/05/06 00:00 [revised] PHST- 2012/05/10 00:00 [accepted] PHST- 2012/06/12 06:00 [entrez] PHST- 2012/06/12 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] AID - S0968-0004(12)00070-9 [pii] AID - 10.1016/j.tibs.2012.05.002 [doi] PST - ppublish SO - Trends Biochem Sci. 2012 Aug;37(8):325-32. doi: 10.1016/j.tibs.2012.05.002. Epub 2012 Jun 7.