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Direct interaction ...
Direct interaction between cholera toxin and dendritic cells is required for oral adjuvant activity
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- Gustafsson, Tobias (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology
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- Hua, Yeu-Jiann, 1982 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology
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- Dahlgren, Madelene (författare)
- Lund University,Lunds universitet,Adaptivt immunförsvar,Forskargrupper vid Lunds universitet,Adaptive Immunity,Lund University Research Groups
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- Livingston, Megan, 1982 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology
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- Johansson Lindbom, Bengt (författare)
- Lund University,Lunds universitet,Adaptivt immunförsvar,Forskargrupper vid Lunds universitet,Adaptive Immunity,Lund University Research Groups
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- Yrlid, Ulf, 1971 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology
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(creator_code:org_t)
- 2013-05-27
- 2013
- Engelska.
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Ingår i: European Journal of Immunology. - : Wiley. - 0014-2980 .- 1521-4141. ; 43:7, s. 1779-1788
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Abstract
Ämnesord
Stäng
- Cholera toxin (CT) binds to GM1-ganglioside receptors present on all nucleated cells. Despite this, it is a very potent mucosal adjuvant that has a dramatic impact on immune cells, as well as nerve and epithelial cells, causing diarrhea. This fact has hampered our understanding of whether the adjuvanticity of CT is direct or indirect, as cells that bind CT may or may not be involved in its adjuvant function. The mucosal barrier is maintained by tight junctions between epithelial cells but dendritic cells (DCs) can protrude luminal dendrites. Here we investigated which cells are involved in the immune augmenting effect of CT. We explored oral immunizations with ovalbumin (OVA) and CT in bone marrow chimeric mice deficient in GM1-ganglioside in defined cellular subsets. We found that chimeric mice lacking GM1 in nonhematopoietic cells, including epithelial cells, mounted an unaltered intestinal IgA response. In contrast, chimeric mice lacking GM1-expressing hematopoietic cells in general, or specifically GM1-expressing conventional DCs (cDCs), largely failed to elicit anti-OVA adaptive immune responses. Therefore, the adjuvanticity of CT does not require epithelial activation, but is directly dependent on the binding of CT to gut cDCs via GM1-ganglioside. These results could have important implications for the generation of novel oral adjuvants.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)
- 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)
Nyckelord
- Cholera toxin
- DC
- IgA
- Mucosal immunity
- Oral adjuvants
- HEAT-LABILE ENTEROTOXIN
- IN-VIVO
- T-CELL
- BYSTANDER ACTIVATION
- IMMUNE-RESPONSES
- PEYERS-PATCHES
- IMMUNIZATION
- MIGRATION
- FLAGELLIN
- RECEPTOR
- ATES OF AMERICA
- V109
- P2072
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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