Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma.
<h4>Background</h4>Allergic asthma is caused by abnormal immunoreactivity against allergens such as house dust mites among which Dermatophagoides farinae (Der f) is a common species. Currently, immunotherapy is based on allergen administration, which has variable effect from patient to p...
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oai:doaj.org-article:6b1f31557e3143d0a1b8ff42dd6b6c3e2021-11-18T08:34:42ZBlock copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma.1932-620310.1371/journal.pone.0085976https://doaj.org/article/6b1f31557e3143d0a1b8ff42dd6b6c3e2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24497934/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Allergic asthma is caused by abnormal immunoreactivity against allergens such as house dust mites among which Dermatophagoides farinae (Der f) is a common species. Currently, immunotherapy is based on allergen administration, which has variable effect from patient to patient and may cause serious side effects, principally the sustained risk of anaphylaxis. DNA vaccination is a promising approach by triggering a specific immune response with reduced allergenicity.<h4>Objective</h4>The aim of the study is to evaluate the effects of DNA immunization with Der f1 allergen specific DNA on allergic sensitization, inflammation and respiratory function in mice.<h4>Methods</h4>Mice were vaccinated 28 and 7 days before allergen exposure with a Der f1-encoding plasmid formulated with a block copolymer. Asthma was induced by skin sensitization followed by intra-nasal challenges with Der f extract. Total lung, broncho-alveolar lavage (BAL) and spleen cells were analyzed by flow cytometry for their surface antigen and cytokine expression. Splenocytes and lung cell IFN-γ production by CD8+ cells in response to Der f CMH1-restricted peptides was assessed by ELISPOT. IgE, IgG1 and IgG2a were measured in serum by ELISA. Specific bronchial hyperresponsiveness was assessed by direct resistance measurements.<h4>Results</h4>Compared to animals vaccinated with an irrelevant plasmid, pVAX-Der f1 vaccination induced an increase of B cells in BAL, and an elevation of IL-10 and IFN-γ but also of IL-4, IL-13 and IL-17 producing CD4+ lymphocytes in lungs and of IL-4 and IL-5 in spleen. In response to CD8-restricted peptides an increase of IFN-γ was observed among lung cells. IgG2a levels non-specifically increased following block copolymer/DNA vaccination although IgE, IgG1 levels and airways resistances were not impacted.<h4>Conclusions & clinical relevance</h4>DNA vaccination using a plasmid coding for Der f1 formulated with the block copolymer 704 induces a specific immune response in the model of asthma used herein.Camille Rolland-DebordDavid LairTiphaine Roussey-BihouéeDorian HassounJustine EvrardMarie-Aude CheminantJulie ChesnéFaouzi BrazaGuillaume MahayVincent PorteroChristine SaganBruno PitardAntoine MagnanPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 1, p e85976 (2014) |
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Medicine R Science Q |
| spellingShingle |
Medicine R Science Q Camille Rolland-Debord David Lair Tiphaine Roussey-Bihouée Dorian Hassoun Justine Evrard Marie-Aude Cheminant Julie Chesné Faouzi Braza Guillaume Mahay Vincent Portero Christine Sagan Bruno Pitard Antoine Magnan Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| description |
<h4>Background</h4>Allergic asthma is caused by abnormal immunoreactivity against allergens such as house dust mites among which Dermatophagoides farinae (Der f) is a common species. Currently, immunotherapy is based on allergen administration, which has variable effect from patient to patient and may cause serious side effects, principally the sustained risk of anaphylaxis. DNA vaccination is a promising approach by triggering a specific immune response with reduced allergenicity.<h4>Objective</h4>The aim of the study is to evaluate the effects of DNA immunization with Der f1 allergen specific DNA on allergic sensitization, inflammation and respiratory function in mice.<h4>Methods</h4>Mice were vaccinated 28 and 7 days before allergen exposure with a Der f1-encoding plasmid formulated with a block copolymer. Asthma was induced by skin sensitization followed by intra-nasal challenges with Der f extract. Total lung, broncho-alveolar lavage (BAL) and spleen cells were analyzed by flow cytometry for their surface antigen and cytokine expression. Splenocytes and lung cell IFN-γ production by CD8+ cells in response to Der f CMH1-restricted peptides was assessed by ELISPOT. IgE, IgG1 and IgG2a were measured in serum by ELISA. Specific bronchial hyperresponsiveness was assessed by direct resistance measurements.<h4>Results</h4>Compared to animals vaccinated with an irrelevant plasmid, pVAX-Der f1 vaccination induced an increase of B cells in BAL, and an elevation of IL-10 and IFN-γ but also of IL-4, IL-13 and IL-17 producing CD4+ lymphocytes in lungs and of IL-4 and IL-5 in spleen. In response to CD8-restricted peptides an increase of IFN-γ was observed among lung cells. IgG2a levels non-specifically increased following block copolymer/DNA vaccination although IgE, IgG1 levels and airways resistances were not impacted.<h4>Conclusions & clinical relevance</h4>DNA vaccination using a plasmid coding for Der f1 formulated with the block copolymer 704 induces a specific immune response in the model of asthma used herein. |
| format |
article |
| author |
Camille Rolland-Debord David Lair Tiphaine Roussey-Bihouée Dorian Hassoun Justine Evrard Marie-Aude Cheminant Julie Chesné Faouzi Braza Guillaume Mahay Vincent Portero Christine Sagan Bruno Pitard Antoine Magnan |
| author_facet |
Camille Rolland-Debord David Lair Tiphaine Roussey-Bihouée Dorian Hassoun Justine Evrard Marie-Aude Cheminant Julie Chesné Faouzi Braza Guillaume Mahay Vincent Portero Christine Sagan Bruno Pitard Antoine Magnan |
| author_sort |
Camille Rolland-Debord |
| title |
Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| title_short |
Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| title_full |
Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| title_fullStr |
Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| title_full_unstemmed |
Block copolymer/DNA vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| title_sort |
block copolymer/dna vaccination induces a strong allergen-specific local response in a mouse model of house dust mite asthma. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2014 |
| url |
https://doaj.org/article/6b1f31557e3143d0a1b8ff42dd6b6c3e |
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