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The mannose 6-phosphate/insulin-like growth factor 2 receptor mediates plasminogen-induced efferocytosis
Verfasser / VerfasserinLeksa, Vladimir ; Ohradanova-Repic, Anna ; Machacek, Christian ; Donner, Clemens ; Mühlgrabner, Vanessa ; Petrovcikova, Eva ; Zahradnikova Jr., Alexandra ; Vicikova, Kristina ; Horejsi, Vaclav ; Stockinger, Hannes
Erschienen in
Journal of Leukocyte Biology, 2019, Jg. 105, H. 3, S. 519-530
ErschienenWiley-Blackwell, 2019
SpracheEnglisch
DokumenttypAufsatz in einer Zeitschrift
Schlagwörter (EN)M6P/IGF2R / efferocytosis / tissue homeostasis / macrophages / plasminogen
URNurn:nbn:at:at-ubmuw:3-754 Persistent Identifier (URN)
DOI10.1002/JLB.1AB0417-160RR 
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The mannose 6-phosphate/insulin-like growth factor 2 receptor mediates plasminogen-induced efferocytosis [1.98 mb]
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Zusammenfassung (Englisch)

The plasminogen system is harnessed in a wide variety of physiological processes, such as fibrinolysis, cell migration, or efferocytosis; and accordingly, it is essential upon inflammation, tissue remodeling, wound healing, and for homeostatic maintenance in general. Previously, we identified a plasminogen receptor in the mannose 6phosphate/insulinlike growth factor 2 receptor (M6P/IGF2R, CD222). Here, we demonstrate by means of genetic knockdown, knockout, and rescue approaches combined with functional studies that M6P/IGF2R is upregulated on the surface of macrophages, recognizes plasminogen exposed on the surface of apoptotic cells, and mediates plasminogeninduced efferocytosis. The level of uptake of plasminogencoated apoptotic cells inversely correlates with the TNF production by phagocytes indicating tissue clearance without inflammation by this mechanism. Our results reveal an uptonow undetermined function of M6P/IGF2R in clearance of apoptotic cells, which is crucial for tissue homeostasis.

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CC-BY-Lizenz (4.0)Creative Commons Namensnennung 4.0 International Lizenz