Academic Journal
Dominant cross-reactive B cell response during secondary acute dengue virus infection in humans.
| العنوان: | Dominant cross-reactive B cell response during secondary acute dengue virus infection in humans. |
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| المؤلفون: | Simona Zompi, Magelda Montoya, Marie O Pohl, Angel Balmaseda, Eva Harris |
| المصدر: | PLoS Neglected Tropical Diseases, Vol 6, Iss 3, p e1568 (2012) |
| بيانات النشر: | Public Library of Science (PLoS), 2012. |
| سنة النشر: | 2012 |
| المجموعة: | LCC:Arctic medicine. Tropical medicine LCC:Public aspects of medicine |
| مصطلحات موضوعية: | Arctic medicine. Tropical medicine, RC955-962, Public aspects of medicine, RA1-1270 |
| الوصف: | The four serotypes of dengue virus (DENV) cause dengue fever (DF) and dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS). Severe disease has been associated with heterotypic secondary DENV infection, mediated by cross-reactive antibodies (Abs) and/or cross-reactive T cells. The role of cross-reactive immunity in mediating enhanced disease versus cross-protection against secondary heterotypic DENV infection is not well defined. A better understanding of the cross-reactive immune response in natural infections is critical for development of safe and effective tetravalent vaccines. We studied the B cell phenotype of circulating B cells in the blood of pediatric patients suspected of dengue during the 2010-2011 dengue season in Managua, Nicaragua (n = 216), which was dominated by the DENV-3 serotype. We found a markedly larger percentage of plasmablast/plasma cells (PB/PCs) circulating in DENV-positive patients as compared to patients with Other Febrile Illnesses (OFIs). The percentage of DENV-specific PB/PCs against DENV-3 represented 10% of the circulating antibody-producing cells (ASCs) in secondary DENV-3 infections. Importantly, the cross-reactive DENV-specific B cell response was higher against a heterotypic serotype, with 46% of circulating PB/PCs specific to DENV-2 and 10% specific to DENV-3 during acute infection. We also observed a higher cross-reactive DENV-specific IgG serum avidity directed against DENV-2 as compared to DENV-3 during acute infection. The neutralization capacity of the serum was broadly cross-reactive against the four DENV serotypes both during the acute phase and at 3 months post-onset of symptoms. Overall, the cross-reactive B cell immune response dominates during secondary DENV infections in humans. These results reflect our recent findings in a mouse model of DENV cross-protection. In addition, this study enabled the development of increased technical and research capacity of Nicaraguan scientists and the implementation of several new immunological assays in the field. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1935-2727 1935-2735 |
| Relation: | http://europepmc.org/articles/PMC3308930?pdf=render; https://doaj.org/toc/1935-2727; https://doaj.org/toc/1935-2735 |
| DOI: | 10.1371/journal.pntd.0001568 |
| URL الوصول: | https://doaj.org/article/d80e277ce2a649ddb1d184ad194aa2ea |
| رقم الانضمام: | edsdoj.80e277ce2a649ddb1d184ad194aa2ea |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19352727 19352735 |
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| DOI: | 10.1371/journal.pntd.0001568 |