Abstract |
Trichinella spiralis heat shock protein 70 (Ts-Hsp70) is a protective antigen that induces partial protective immunity against T. spiralis infection in mice. To determine whether dendritic cells are involved in the mechanism responsible for the protection induced by Ts-Hsp70, mouse bone marrow-derived dendritic cells (DCs) were incubated with recombinant Ts-Hsp70 (rTs-Hsp70), and the DC-secreted cytokines and expressed surface markers were measured. The results demonstrated that rTs-Hsp70 activated DC maturation that was characterized by the secretion of IL-1β, IL-12p70, TNF-α, and IL-6 and the increased surface expression of CD11c, MHC II, CD40, CD80, and CD86. The rTs-Hsp70-activated DCs enabled the stimulation, proliferation and secretion of Th1/2 cytokines (i.e., INF-γ, IL-2, IL-4 and IL-6) in CD4(+) T cells from T. spiralis-infected mice. The mice that received rTs-Hsp70-activated DCs exhibited a 38.4% reduction in muscle larvae upon larval challenge with T. spiralis compared to the group that received PBS-incubated DCs. This partial protection was correlated with Th1 and Th2 mixed anti-Ts-Hsp70-specific immune responses that included high titers of total IgG, IgG1 and IgG2a and increased levels of Th1/2 cytokines (i.e., IFN-γ, IL-2, IL-4, IL-6). These results indicate that the rTs-Hsp70-induced protective immunity was mediated by the activation of the DCs and that rTs-Hsp70-loaded DCs could be an alternative vaccine approach against trichinellosis.
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Authors | Lei Fang, Liang Sun, Jing Yang, Yuan Gu, Bin Zhan, Jingjing Huang, Xinping Zhu |
Journal | Vaccine
(Vaccine)
Vol. 32
Issue 35
Pg. 4412-4419
(Jul 31 2014)
ISSN: 1873-2518 [Electronic] Netherlands |
PMID | 24962751
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2014 The Authors. Published by Elsevier Ltd.. All rights reserved. |
Chemical References |
- Antigens, CD
- Antigens, Helminth
- Cytokines
- HSP70 Heat-Shock Proteins
- Histocompatibility Antigens Class II
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Topics |
- Animals
- Antigens, CD
(analysis)
- Antigens, Helminth
(immunology)
- CD4-Positive T-Lymphocytes
(immunology)
- Cell Proliferation
- Cytokines
(metabolism)
- Dendritic Cells
(drug effects, immunology)
- Disease Models, Animal
- Female
- HSP70 Heat-Shock Proteins
(immunology)
- Histocompatibility Antigens Class II
(analysis)
- Mice, Inbred BALB C
- Muscles
(parasitology)
- Parasite Load
- Trichinella spiralis
(immunology)
- Trichinellosis
(immunology)
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