972 resultados para Decoration and ornament.
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Virus-like particles (VLPs) are non-infectious self-assembling nanoparticles, useful in medicine and nanotechnology. Their repetitive molecularly-defined architecture is attractive for engineering multivalency, notably for vaccination. However, decorating VLPs with target-antigens by genetic fusion or chemical modification is time-consuming and often leads to capsid misassembly or antigen misfolding, hindering generation of protective immunity. Here we establish a platform for irreversibly decorating VLPs simply by mixing with protein antigen. SpyCatcher is a genetically-encoded protein designed to spontaneously form a covalent bond to its peptide-partner SpyTag. We expressed in E. coli VLPs from the bacteriophage AP205 genetically fused to SpyCatcher. We demonstrated quantitative covalent coupling to SpyCatcher-VLPs after mixing with SpyTag-linked to malaria antigens, including CIDR and Pfs25. In addition, we showed coupling to the VLPs for peptides relevant to cancer from epidermal growth factor receptor and telomerase. Injecting SpyCatcher-VLPs decorated with a malarial antigen efficiently induced antibody responses after only a single immunization. This simple, efficient and modular decoration of nanoparticles should accelerate vaccine development, as well as other applications of nanoparticle devices.
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Mode of access: Internet.
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First edition ... 1894. Reprinted ... 1908.
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Mode of access: Internet.
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Mode of access: Internet.
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Pottery, Iran, Samanid; 2 7/8 in.x 10 15/64 in.; earthenware; white slip, incised and splashed with polychrome glazes under transparent glaze (sgraffito ware)
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Editors: Oct. 1885--Dec. 1886, A. A. Kelly.--Jan. 1887-Dec. 1888, Frederick Maire (with A. A. Kelly, Jan.-May, 1887)--Jan. 1889-Jan.? 1893, A. S. Jennings.
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Mode of access: Internet.
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Mode of access: Internet.
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Includes bibliographical references.
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Mode of access: Internet.
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Mode of access: Internet.