Cited by 390Phagocytosis and Immune RegulationCell death mechanisms and regulationCell Adhesion Molecules Research

Apoptosis disables CD31-mediated cell detachment from phagocytes promoting binding and engulfment

Brown, Simon, Heinisch, Isabelle, Ross, Ewan, Shaw, Kate, Buckley, Chris D., Savill, John·2002·Nature

Abstract

Macrophage recognition and ingestion of 'self' cells undergoing apoptosis in vivo protects tissues from the toxic contents of dying cells and modulates macrophage regulation of inflammatory and immune responses. However, the complex molecular mechanisms mediating macrophage discrimination between viable and apoptotic cells are poorly understood. In particular, little is known of why viable nucleated cells are not engulfed by macrophages. To reveal active repulsion of viable cells and to seek specific capture or 'tethering' of apoptotic cells, we studied macrophage binding of viable and apoptotic leukocytes under conditions of flow. We found that homophilic ligation of CD31 (ref. 4) on viable leukocytes promoted their active, temperature-dependent detachment under low shear, whereas such CD31-mediated detachment was disabled in apoptotic leukocytes, promoting tight binding and macrophage ingestion of dying cells. Here we propose that CD31 (also known as platelet-endothelial cell adhesion molecule-1, PECAM-1) is an example of a cell-surface molecule that prevents phagocyte ingestion of closely apposed viable cells by transmitting 'detachment' signals, and which changes function on apoptosis, promoting tethering of dying cells to phagocytes.

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Crossref · 10.1038/nature00811

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  • CD31 and CD47 are examples of don't-eat-me signals, although how cell death negates them remains unexplored.

    “Examples of such signals are CD31 117 and CD47 118, although how these molecules are negated by cell death remains unexplored.”

    From Immunogenic and tolerogenic cell death (2009) · cites this paper as [118]

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Authors
Brown, S., Heinisch, I., Ross, E., Shaw, K., Buckley, C. D., & Savill, J.
Affiliations
  • Centre for Inflammation Research (GB)
  • University of Birmingham (GB)
Corresponding author
Brown, Simon
Venue
Nature
Published
2002-07
Volume
418
Issue
6894
Pages
200-203
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1968736434
Cited by
390
References
21
Citations by year
2026: 4 · 2025: 9 · 2024: 11 · 2023: 10 · 2022: 10 · 2021: 17 · 2020: 17 · 2019: 18 · 2018: 6 · 2017: 16 · 2016: 12 · 2015: 8 · 2014: 17 · 2013: 16 · 2012: 15
FWCI
7.89
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
Keywords
apoptosis, CD31, macrophage phagocytosis, cell detachment, leukocyte tethering, homophilic adhesion, shear flow, cell surface signaling
MeSH terms
Cell Adhesion, Cell Survival, Cells, Cultured, Endocytosis, Humans, Leukocytes, Macrophages, Proteolipids, Signal Transduction, Apoptosis, Platelet Endothelial Cell Adhesion Molecule-1

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