Clearance of Apoptotic Cells by Macrophages Induces Regulatory Phenotype and Involves Stimulation of CD36 and Platelet-Activating Factor Receptor
Joint Authors
Jancar, Sonia
Pecenin, Mateus
Rios, Francisco J. O.
Ferracini, Matheus
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-20
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Phagocytosis of apoptotic cells (efferocytosis) induces macrophage differentiation towards a regulatory phenotype (IL-10high/IL-12p40low).
CD36 is involved in the recognition of apoptotic cells (AC), and we have shown that the platelet-activating factor receptor (PAFR) is also involved.
Here, we investigated the contribution of PAFR and CD36 to efferocytosis and to the establishment of a regulatory macrophage phenotype.
Mice bone marrow-derived macrophages were cocultured with apoptotic thymocytes, and the phagocytic index was determined.
Blockage of PAFR with antagonists or CD36 with specific antibodies inhibited the phagocytosis of AC (~70–80%).
Using immunoprecipitation and confocal microscopy, we showed that efferocytosis increased the CD36 and PAFR colocalisation in the macrophage plasma membrane; PAFR and CD36 coimmunoprecipitated with flotillin-1, a constitutive lipid raft protein, and disruption of these membrane microdomains by methyl-β-cyclodextrin reduced AC phagocytosis.
Efferocytosis induced a pattern of cytokine production, IL-10high/IL-12p40low, that is, characteristic of a regulatory phenotype.
LPS potentiated the efferocytosis-induced production of IL-10, and this was prevented by blocking PAFR or CD36.
It can be concluded that phagocytosis of apoptotic cells engages CD36 and PAFR, possibly in lipid rafts, and this is required for optimal efferocytosis and the establishment of the macrophage regulatory phenotype.
American Psychological Association (APA)
Ferracini, Matheus& Rios, Francisco J. O.& Pecenin, Mateus& Jancar, Sonia. 2013. Clearance of Apoptotic Cells by Macrophages Induces Regulatory Phenotype and Involves Stimulation of CD36 and Platelet-Activating Factor Receptor. Mediators of Inflammation،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-510717
Modern Language Association (MLA)
Ferracini, Matheus…[et al.]. Clearance of Apoptotic Cells by Macrophages Induces Regulatory Phenotype and Involves Stimulation of CD36 and Platelet-Activating Factor Receptor. Mediators of Inflammation No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-510717
American Medical Association (AMA)
Ferracini, Matheus& Rios, Francisco J. O.& Pecenin, Mateus& Jancar, Sonia. Clearance of Apoptotic Cells by Macrophages Induces Regulatory Phenotype and Involves Stimulation of CD36 and Platelet-Activating Factor Receptor. Mediators of Inflammation. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-510717
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-510717