PMID- 15871444 OWN - NLM STAT- MEDLINE DCOM- 20050526 LR - 20111117 IS - 0277-0903 (Print) IS - 0277-0903 (Linking) VI - 42 IP - 2 DP - 2005 Mar TI - Vaccination with DNA encoding human T-cell epitopes suppresses Der p induced allergic responses in mice. PG - 119-25 AB - The apparent complexity of allergen-specific T-cell response in terms of epitope usage in humans is a potential barrier to peptide-based immunotherapy for allergy. A knowledge of cross-reacting T-cell epitopes of common allergens might have an impact on the development of vaccines for immunotherapy. We examined the efficiency of vaccinating with plasmid DNA coding only human T-cell epitopes on the suppression of allergic reactions in mice. BALB/c mice that received an injection of mixed naked DNA plasmids encoding the five classes of human T-cell epitopes on Der p 1 and Der p 2 produced a significant reduction in total and Der p-specific immunoglobulin E (IgE) synthesis. In Der p specific-IgG2a antibody responses, vaccinated mice showed more prominent responses than controls. Higher levels of interferon-gamma, a Th1 cytokine associated with the suppression of IgE production, were found in the sera of vaccinated mice. Histologic studies showed a marked reduction in the infiltration of inflammatory cells in the lung tissues of vaccinated mice vs. controls. These results suggest that vaccination with DNA encoding human T-cell epitopes effectively inhibits allergic responses in mice and might induce cross-regulation on helper T-cell level in vivo. FAU - Kwon, Soon Seog AU - Kwon SS AD - Department of Internal Medicine, Catholic University of Korea, Medical College, Seoul, Republic of Korea. FAU - Kim, Nack Sung AU - Kim NS FAU - Yoo, Tai June AU - Yoo TJ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Asthma JT - The Journal of asthma : official journal of the Association for the Care of Asthma JID - 8106454 RN - 0 (Antigens, Dermatophagoides) RN - 0 (Arthropod Proteins) RN - 0 (Dermatophagoides pteronyssinus antigen p 2) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Immunoglobulin G) RN - 37341-29-0 (Immunoglobulin E) RN - EC 3.4.22.- (Cysteine Endopeptidases) RN - EC 3.4.22.- (Dermatophagoides pteronyssinus antigen p 1) SB - IM MH - Animals MH - Antigens, Dermatophagoides/*immunology MH - Arthropod Proteins MH - Cysteine Endopeptidases MH - Desensitization, Immunologic/*methods MH - Epitopes, T-Lymphocyte/*genetics MH - Female MH - Humans MH - Immunoglobulin E/biosynthesis MH - Immunoglobulin G/biosynthesis MH - Lung/pathology MH - Mice MH - Mice, Inbred BALB C MH - Plasmids MH - Treatment Outcome EDAT- 2005/05/06 09:00 MHDA- 2005/05/27 09:00 CRDT- 2005/05/06 09:00 PHST- 2005/05/06 09:00 [pubmed] PHST- 2005/05/27 09:00 [medline] PHST- 2005/05/06 09:00 [entrez] PST - ppublish SO - J Asthma. 2005 Mar;42(2):119-25.