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IgE-mediated enhanc...
IgE-mediated enhancement of CD4(+) T cell responses requires antigen presentation by CD8 alpha(-) conventional dendritic cells
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- Ding, Zhoujie (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Dahlin, Joakim S. (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Xu, Hui (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Heyman, Birgitta (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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(creator_code:org_t)
- 2016-06-16
- 2016
- Engelska.
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Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 6
- Relaterad länk:
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https://uu.diva-port... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- IgE, forming an immune complex with small proteins, can enhance the specific antibody and CD4(+) T cell responses in vivo. The effects require the presence of CD23 (Fc epsilon-receptor II)(+) B cells, which capture IgE-complexed antigens (Ag) in the circulation and transport them to splenic B cell follicles. In addition, also CD11c(+) cells, which do not express CD23, are required for IgE-mediated enhancement of T cell responses. This suggests that some type of dendritic cell obtains IgE-Ag complexes from B cells and presents antigenic peptides to T cells. To elucidate the nature of this dendritic cell, mice were immunized with ovalbumin (OVA)-specific IgE and OVA, and different populations of CD11c(+) cells, obtained from the spleens four hours after immunization, were tested for their ability to present OVA. CD8 alpha(-) conventional dendritic cells (cDCs) were much more efficient in inducing specific CD4(+) T cell proliferation ex vivo than were CD8 alpha(+) cDCs or plasmacytoid dendritic cells. Thus, IgE-Ag complexes administered intravenously are rapidly transported to the spleen by recirculating B cells where they are delivered to CD8 alpha(-) cDCs which induce proliferation of CD4(+) T cells.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
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- ref (ämneskategori)
- art (ämneskategori)
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