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-Structure paper
タイトル | Neutralizing antibodies can initiate genome release from human enterovirus 71. |
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ジャーナル・号・ページ | Proc Natl Acad Sci U S A, Vol. 111, Issue 6, Page 2134-2139, Year 2014 |
掲載日 | 2014年2月11日 |
![]() | Pavel Plevka / Pei-Yin Lim / Rushika Perera / Jane Cardosa / Ampa Suksatu / Richard J Kuhn / Michael G Rossmann / ![]() |
PubMed 要旨 | Antibodies were prepared by immunizing mice with empty, immature particles of human enterovirus 71 (EV71), a picornavirus that causes severe neurological disease in young children. The capsid ...Antibodies were prepared by immunizing mice with empty, immature particles of human enterovirus 71 (EV71), a picornavirus that causes severe neurological disease in young children. The capsid structure of these empty particles is different from that of the mature virus and is similar to "A" particles encountered when picornaviruses recognize a potential host cell before genome release. The monoclonal antibody E18, generated by this immunization, induced a conformational change when incubated at temperatures between 4 °C and 37 °C with mature virus, transforming infectious virions into A particles. The resultant loss of genome that was observed by cryo-EM and a fluorescent SYBR Green dye assay inactivated the virus, establishing the mechanism by which the virus is inactivated and demonstrating that the E18 antibody has potential as an anti-EV71 therapy. The antibody-mediated virus neutralization by the induction of genome release has not been previously demonstrated. Furthermore, the present results indicate that antibodies with genome-release activity could also be produced for other picornaviruses by immunization with immature particles. |
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手法 | EM (単粒子) |
解像度 | 10.0 - 16.0 Å |
構造データ | EMDB-2397, PDB-4c0u: |
化合物 | ![]() ChemComp-SPH: ![]() ChemComp-NA: ![]() ChemComp-CL: |
由来 |
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![]() | VIRUS/IMMUNE SYSTEM / VIRUS-IMMUNE SYSTEM COMPLEX / VIRUS / PATHOGEN / EV71 / ANTIBODY / E18 / NEUTRALIZING |