| Autor: |
Katie A. Howell, Xiangguo Qiu, Jennifer M. Brannan, Christopher Bryan, Edgar Davidson, Frederick W. Holtsberg, Anna Z. Wec, Sergey Shulenin, Julia E. Biggins, Robin Douglas, Sven G. Enterlein, Hannah L. Turner, Jesper Pallesen, Charles D. Murin, Shihua He, Andrea Kroeker, Hong Vu, Andrew S. Herbert, Marnie L. Fusco, Elisabeth K. Nyakatura, Jonathan R. Lai, Zhen-Yong Keck, Steven K.H. Foung, Erica Ollmann Saphire, Larry Zeitlin, Andrew B. Ward, Kartik Chandran, Benjamin J. Doranz, Gary P. Kobinger, John M. Dye, M. Javad Aman |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Cell Reports, Vol 15, Iss 7, Pp 1514-1526 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2211-1247 |
| DOI: |
10.1016/j.celrep.2016.04.026 |
| Popis: |
Summary: Previous efforts to identify cross-neutralizing antibodies to the receptor-binding site (RBS) of ebolavirus glycoproteins have been unsuccessful, largely because the RBS is occluded on the viral surface. We report a monoclonal antibody (FVM04) that targets a uniquely exposed epitope within the RBS; cross-neutralizes Ebola (EBOV), Sudan (SUDV), and, to a lesser extent, Bundibugyo viruses; and shows protection against EBOV and SUDV in mice and guinea pigs. The antibody cocktail ZMapp™ is remarkably effective against EBOV (Zaire) but does not cross-neutralize other ebolaviruses. By replacing one of the ZMapp™ components with FVM04, we retained the anti-EBOV efficacy while extending the breadth of protection to SUDV, thereby generating a cross-protective antibody cocktail. In addition, we report several mutations at the base of the ebolavirus glycoprotein that enhance the binding of FVM04 and other cross-reactive antibodies. These findings have important implications for pan-ebolavirus vaccine development and defining broadly protective antibody cocktails. : Howell et al. examine a mAb, FVM04, that binds the ebolavirus receptor-binding site and find that FVM04 protects against EBOV and SUDV. When combined with two ZMapp™ components, the antibody cocktail retains EBOV protection similar to that of ZMapp™ and extends protection against SUDV. Specific glycoprotein mutations that enhance the exposure of cross-neutralizing epitopes are described. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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