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Verschoor, A. ; Neuenhahn, M. ; Navarini, A.A.* ; Graef, P.* ; Plaumann, A.* ; Seidlmeier, A.* ; Nieswandt, B.* ; Massberg, S.* ; Zinkernagel, R.M.* ; Hengartner, H.* ; Busch, D.H.

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)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
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.
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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 Artikelnummer: , Supplement: ,
Verlag Nature Publishing Group
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Molecular Immunology (IMI)
Institute of Virology (VIRO)
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
PubMed ID 22037602
DOI 10.1038/ni.2140
Scopus ID 81255208439
Erfassungsdatum 2011-12-23
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