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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Goodman, Alan G. Esteban, Mariano Vijayan, Aneesh Espinosa, Diego A. Zavala, Fidel Sorzano, Carlos Oscar S. Gómez, Carmen E. Sanchez-Sampedro, Lucas |
| Description | Country affiliation: Spain Author Affiliation: Vijayan A ( Departamento de Biología Celular y Molecular, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain.) |
| Abstract | Development of subunit vaccines for malaria that elicit a strong, long-term memory response is an intensive area of research, with the focus on improving the immunogenicity of a circumsporozoite (CS) protein-based vaccine. In this study, we found that a chimeric protein, formed by fusing vaccinia virus protein 14K (A27) to the CS of Plasmodium yoelii, induces strong effector memory CD8(+) T cell responses in addition to high-affinity Abs when used as a priming agent in the absence of any adjuvant, followed by an attenuated vaccinia virus boost expressing CS in murine models. Moreover, priming with the chimeric protein improved the magnitude and polyfunctionality of cytokine-secreting CD8(+) T cells. This fusion protein formed oligomers/aggregates that led to activation of STAT-1 and IFN regulatory factor-3 in human macrophages, indicating a type I IFN response, resulting in NO, IL-12, and IL-6 induction. Furthermore, this vaccination regimen inhibited the liver stage development of the parasite, resulting in sterile protection. In summary, we propose a novel approach in designing CS based pre-erythrocytic vaccines against Plasmodium using the adjuvant-like effect of the immunogenic vaccinia virus protein 14K. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1102492 |
| Journal | The Journal of Immunology |
| Issue Number | 12 |
| Volume Number | 188 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2012-06-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Malaria Vaccines Immunology Protozoan Proteins Recombinant Fusion Proteins Vaccinia Virus Viral Proteins Adjuvants, Immunologic Pharmacology Animals Antigens, Protozoan Enzyme-linked Immunosorbent Assay Flow Cytometry Malaria Prevention & Control Chemical Synthesis Mice Mice, Inbred Balb C Microscopy, Confocal Reverse Transcriptase Polymerase Chain Reaction Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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