TY - JOUR
T1 - Expression of XCR1 characterizes the Batf3-dependent lineage of dendritic cells capable of antigen cross-presentation
AU - Bachem, Annabell
AU - Hartung, Evelyn
AU - Güttler, Steffen
AU - Mora, Ahmed
AU - Zhou, Xuefei
AU - Hegemann, Anika
AU - Plantinga, Maud
AU - Mazzini, Elisa
AU - Stoitzner, Patrizia
AU - Gurka, Stephanie
AU - Henn, Volker
AU - Mages, Hans W.
AU - Kroczek, Richard A.
PY - 2012
Y1 - 2012
N2 - Cross-presentation of antigen by dendritic cells (DCs) to CD8+ T cells is a fundamentally important mechanism in the defense against pathogens and tumors. Due to the lack of an appropriate lineage marker, cross-presenting DCs in the mouse are provisionally classified as "Batf3-IRF-8-Id2-dependent DCs" or as "CD8+ DCs" in the spleen, and as "CD103+CD11b- DCs" in the periphery. We have now generated a mAb to XCR1, a chemokine receptor which is specifically expressed on CD8+ DCs and a subpopulation of double negative DCs in the spleen. Using this antibody, we have determined that only XCR1+CD8+ (around 80% of CD8+ DCs) and their probable precursors, XCR1CCD8- DCs, efficiently take up cellular material and excel in antigen cross-presentation. In lymph nodes (LNs) and peripheral tissues, XCR1+ DCs largely, but not fully, correspond to CD103+CD11b- DCs. Most importantly, we demonstrate that XCR1+ DCs in the spleen, LNs, and peripheral tissues are dependent on the growth factor Flt3 ligand and are selectively absent in Batf3-deficient animals. These results provide evidence that expression of XCR1 throughout the body defines the Batf3-dependent lineage of DCs with a special capacity to cross-present antigen. XCR1 thus emerges as the first surface marker characterizing a DC lineage in the mouse and potentially also in the human.
AB - Cross-presentation of antigen by dendritic cells (DCs) to CD8+ T cells is a fundamentally important mechanism in the defense against pathogens and tumors. Due to the lack of an appropriate lineage marker, cross-presenting DCs in the mouse are provisionally classified as "Batf3-IRF-8-Id2-dependent DCs" or as "CD8+ DCs" in the spleen, and as "CD103+CD11b- DCs" in the periphery. We have now generated a mAb to XCR1, a chemokine receptor which is specifically expressed on CD8+ DCs and a subpopulation of double negative DCs in the spleen. Using this antibody, we have determined that only XCR1+CD8+ (around 80% of CD8+ DCs) and their probable precursors, XCR1CCD8- DCs, efficiently take up cellular material and excel in antigen cross-presentation. In lymph nodes (LNs) and peripheral tissues, XCR1+ DCs largely, but not fully, correspond to CD103+CD11b- DCs. Most importantly, we demonstrate that XCR1+ DCs in the spleen, LNs, and peripheral tissues are dependent on the growth factor Flt3 ligand and are selectively absent in Batf3-deficient animals. These results provide evidence that expression of XCR1 throughout the body defines the Batf3-dependent lineage of DCs with a special capacity to cross-present antigen. XCR1 thus emerges as the first surface marker characterizing a DC lineage in the mouse and potentially also in the human.
KW - Batf3
KW - Cross-presentation
KW - Dendritic cells
KW - Lineage marker
KW - XCR1
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U2 - 10.3389/fimmu.2012.00214
DO - 10.3389/fimmu.2012.00214
M3 - Article
C2 - 22826713
AN - SCOPUS:84874207519
VL - 3
JO - Frontiers in Immunology
JF - Frontiers in Immunology
SN - 1664-3224
IS - JUL
M1 - Article 214
ER -