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Dendritic Cell Subset Distributions in the Aorta in Healthy and Atherosclerotic Mice

Please always quote using this URN: urn:nbn:de:bvb:20-opus-119907
  • Dendritic cells (DCs) can be sub-divided into various subsets that play specialized roles in priming of adaptive immune responses. Atherosclerosis is regarded as a chronic inflammatory disease of the vessel wall and DCs can be found in non-inflamed and diseased arteries. We here performed a systematic analyses of DCs subsets during atherogenesis. Our data indicate that distinct DC subsets can be localized in the vessel wall. In C57BL/6 and low density lipoprotein receptor-deficient (Ldlr−/−) mice, CD11c+ MHCII+ DCs could be discriminated intoDendritic cells (DCs) can be sub-divided into various subsets that play specialized roles in priming of adaptive immune responses. Atherosclerosis is regarded as a chronic inflammatory disease of the vessel wall and DCs can be found in non-inflamed and diseased arteries. We here performed a systematic analyses of DCs subsets during atherogenesis. Our data indicate that distinct DC subsets can be localized in the vessel wall. In C57BL/6 and low density lipoprotein receptor-deficient (Ldlr−/−) mice, CD11c+ MHCII+ DCs could be discriminated into CD103− CD11b+F4/80+, CD11b+F4/80− and CD11b−F4/80− DCs and CD103+ CD11b−F4/80− DCs. Except for CD103− CD11b− F4/80− DCs, these subsets expanded in high fat diet-fed Ldlr−/− mice. Signal-regulatory protein (Sirp)-α was detected on aortic macrophages, CD11b+ DCs, and partially on CD103− CD11b− F4/80− but not on CD103+ DCs. Notably, in FMS-like tyrosine kinase 3-ligand-deficient (Flt3l−/−) mice, a specific loss of CD103+ DCs but also CD103− CD11b+ F4/80− DCs was evidenced. Aortic CD103+ and CD11b+ F4/80− CD103− DCs may thus belong to conventional rather than monocyte-derived DCs, given their dependence on Flt3L-signalling. CD64, postulated to distinguish macrophages from DCs, could not be detected on DC subsets under physiological conditions, but appeared in a fraction of CD103− CD11b+ F4/80− and CD11b+ F4/80+ cells in atherosclerotic Ldlr−/− mice. The emergence of CD64 expression in atherosclerosis may indicate that CD11b+ F4/80− DCs similar to CD11b+ F4/80+ DCs are at least in part derived from immigrated monocytes during atherosclerotic lesion formation. Our data advance our knowledge about the presence of distinct DC subsets and their accumulation characteristics in atherosclerosis, and may help to assist in future studies aiming at specific DC-based therapeutic strategies for the treatment of chronic vascular inflammation.show moreshow less

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Metadaten
Author: Martin Busch, Thilo C. Westhofen, Miriam Koch, Manfred B. Lutz, Alma Zernecke
URN:urn:nbn:de:bvb:20-opus-119907
Document Type:Journal article
Faculties:Medizinische Fakultät / Institut für Klinische Biochemie und Pathobiochemie
Medizinische Fakultät / Institut für Virologie und Immunbiologie
Fakultät für Biologie / Rudolf-Virchow-Zentrum
Language:English
Parent Title (English):PLoS ONE
ISSN:1932-6203
Year of Completion:2014
Volume:9
Issue:2
Pagenumber:e88452
Source:PLoS ONE 9(2): e88452. doi:10.1371/journal.pone.0088452
DOI:https://doi.org/10.1371/journal.pone.0088452
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Tag:DAPI staining; aorta; cell staining; diet; flow cytometry; macrophages; monocytes
Release Date:2015/11/18
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung