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A platelet-mediated system for shuttling blood-borne bacteria to CD8α+ dendritic cells depends on glycoprotein GPIb and complement C3.
Nat. Immunol. 12, 1194-1201 (2011)
The acquisition of pathogen-derived antigen by dendritic cells (DCs) is a key event in the generation of cytotoxic CD8(+) T cell responses. In mice, the intracellular bacterium Listeria monocytogenes is directed from the blood to splenic CD8α(+) DCs. We report that L. monocytogenes rapidly associated with platelets in the bloodstream in a manner dependent on GPIb and complement C3. Platelet association targeted a small but immunologically important portion of L. monocytogenes to splenic CD8α(+) DCs, diverting bacteria from swift clearance by other, less immunogenic phagocytes. Thus, an effective balance is established between maintaining sterility of the circulation and induction of antibacterial immunity by DCs. Other Gram-positive bacteria also were rapidly tagged by platelets, revealing a broadly active shuttling mechanism for systemic bacteria.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Times Cited
Scopus
Cited By
Cited By
Altmetric
3.101
3.101
54
137
Anmerkungen
Besondere Publikation
Auf Hompepage verbergern
Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Listeria-monocytogenes infection; Marginal zone; T-cells; Immune-responses; In-vivo; Receptor; Antigens; Phagocytosis; Macrophages; Spleen
Sprache
englisch
Veröffentlichungsjahr
2011
HGF-Berichtsjahr
2011
ISSN (print) / ISBN
1529-2908
e-ISSN
1529-2916
Zeitschrift
Nature Immunology
Quellenangaben
Band: 12,
Heft: 12,
Seiten: 1194-1201
Verlag
Nature Publishing Group
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er)
Immune Response and Infection
PSP-Element(e)
G-501790-003
G-520100-001
G-520100-001
PubMed ID
22037602
DOI
10.1038/ni.2140
Scopus ID
81255208439
Erfassungsdatum
2011-12-23