Regulatory T-cells have a prominent role in the immune modulated vaccine response by specific oligosaccharides.
Vaccine
; 28(35): 5711-7, 2010 Aug 09.
Article
em En
| MEDLINE
| ID: mdl-20600499
ABSTRACT
Regulatory T-cells are increasingly important in vaccine strategies. In a Flu-vaccination model the role of CD4(+)CD25(+)Foxp3(+) regulatory T-cells (Tregs) and the immune modulation by orally supplied prebiotic oligosaccharides consisting of scGOS/lcFOS/pAOS, were assessed using anti-CD25 (PC61) mediated depletion studies. As expected, in C57BL/6J mice the Flu-vaccination resulted in significantly (p<0.001) increased DTH responses when receiving scGOS/lcFOS/pAOS. In addition, increased T-bet expression of activated CD4(+) T-cells was detected compared to placebo. In vivo depletion of CD25(+) Tregs significantly (p<0.05) increased basal DTH responses, indicating the suppressive function of these CD25(+) Tregs normally present. Surprisingly, in vivo Tregs depletion diminished scGOS/lcFOS/pAOS induced immune modulation completely to control levels (p<0.05). Although no difference in number, percentage or activation of Tregs could be determined after scGOS/lcFOS/pAOS supplementation, changes in Treg function still remains to be investigated. In conclusion, CD25(+) Tregs have an important role in modulated Flu-vaccine responses induced by scGOS/lcFOS/pAOS.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Oligossacarídeos
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Vacinas contra Influenza
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Linfócitos T Reguladores
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Infecções por Orthomyxoviridae
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Prebióticos
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article