Mechanisms of AllergyHypersensitivity reactions after respiratory sensitization: Effect of intranasal peptides containing T-cell epitopes☆,☆☆
Section snippets
Mice
Specific pathogen-free C57BL/6 mice (6-8 weeks old) were obtained from the Animal Resource Centre (Murdoch, Australia).
Antigens and peptides
Der p 1 was isolated from a 20% solution of spent mite media (a gift from CSL-Ltd, Melbourne, Australia) dissolved in PBS by means of affinity chromatography with mAb 4C1 provided by Dr M. D. Chapman (Indoor Biotechnologies, Charlottesville, Va). Human serum albumin (HSA) was purchased from Sigma (St Louis, Mo). The peptide representing residues 114-128 of Der p 1.010119
Results
Mice were given 5 daily doses of the Der p 1 peptide to examine the effect of intranasal peptide treatment on respiratory sensitization, and after 10 days, they were sensitized by means of an intranasal administration of Der p 1 in mutant toxin. After a further 4 weeks, the mice were challenged with intranasal administration of 100 μg of Der p 1 on 3 consecutive days, and bronchoalveolar lavage fluid and lung histologic specimens were examined the next day. The inflammation was compared with
Discussion
The intranasal administration of Der p 1 peptide has been shown to profoundly inhibit IgE antibody responses of mice injected with Der p 1 in alum12 and to inhibit delayed hypersensitivity and IL-2, IFN-γ, and IL-5 responses of mice immunized with the allergen in CFA.11, 12 This concurs with studies of others with intranasal administration of allergen1, 2, 3, 4, 5 or peptides.13, 14, 15 In contrast, when the sensitization was performed intranasally, neither the IgE and IgG antibody responses
References (37)
- et al.
Mechanisms preventing allergen-induced airways hyperreactivity: role of tolerance and immune deviation
J Allergy Clin Immunol
(2000) - et al.
Allergens of wild house dust mites: environmental Der p 1 and Der p 2 sequence polymorphisms
J Allergy Clin Immunol
(2001) - et al.
Long-term persistence of cellular immunity to Oka vaccine virus induced by pernasal co-administration with Escherichia coli enterotoxin in mice
Vaccine
(2001) - et al.
An abundance of bacterial ADP-ribosyltransferases -implications for the origin of exotoxins and their human homologues
Trends Microbiol
(2001) - et al.
A homing selection hypothesis for T-cell trafficking
Immunol Today
(2000) - et al.
Inhibition of specific IgE responses by pre-exposure to inhaled antigen
Immunology
(1981) - et al.
Regulation of antigen-specific IgE, IgG1, and mast cell responses to ingested allergen by mucosa tolerance induction
J Immunol
(1997) - et al.
Mucosal tolerance is associated with but independent of, up-regulation Th2 responses
Immunology
(1997) - et al.
Suppression of antigen-specific T- and B-cell responses by intranasal or oral administration of recombinant bet v 1, the major birch pollen allergen, in a murine model of type 1 allergy
J Allergy Clin Immunol
(1999) - et al.
Suppressive versus stimulatory effects of allergen/cholera toxoid (CTB) conjugates depending on the nature of the allergen in a murine model of type 1 allergy
Int Immunol
(1999)
The natural immune response to inhaled soluble protein antigens involves major histocompatibility complex (MHC) class I restricted CD4+ T cell-dependent immune deviation resulting in selective suppression of immunoglobulin E production
J Exp Med
Inhibition of experimental autoimmune encephalomyelitis by inhalation but not oral administration of the encephalitogenic peptide: influence of MHC binding affinity
Int Immunol
Inhibition of T cell and antibody responses to house dust mite allergen by inhalation of the dominant T cell epitope in naive and sensitized mice
J Exp Med
Regulation of house dust mite responses by intranasally administered peptide: transient activation of CD4+ T cells precedes the development of tolerance in vivo
Int Immunol
Characterization of the specificity and duration of T cell tolerance to intranasally administered peptides in mice: a role intramolecular suppression
Int Immunol
Inhibition of mucosal and systemic Th2-type immune responses by intranasal peptides containing a dominant T cell epitope of the allergen Der p 1
Int Immunol
Inducing tolerance by intranasal administration of long peptides in naive and primed CBA/J mice
J Immunol
The efficacy of immunotherapy in an experimental murine model of allergic asthma is related to the strength and site of T cell activation during immunotherapy
J Immunol
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Supported by a grant from the Australian National Health and Medical Research Council.
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Reprint requests: Wayne R. Thomas, PhD, TVW Telethon Institute for Child Health Research, PO Box 855, West Perth, Western Australia 6872, Australia.