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发表于 2015-4-18 17:10:40
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An Ebola whole-virus vaccine is protective in nonhuman primates
Andrea Marzi1,*, Peter Halfmann2,*, Lindsay Hill-Batorski2, Friederike Feldmann3, W. Lesley Shupert1, Gabriele Neumann2, Heinz Feldmann1, Yoshihiro Kawaoka2,4,5,†
ABSTRACT
Zaire ebolavirus (EBOV) is the causative agent of the current outbreak of hemorrhagic fever disease in West Africa. Previously, we showed that a whole EBOV vaccine based on a replication-defective EBOV (EBOVΔVP30) protects immunized mice and guinea pigs against lethal challenge with rodent-adapted EBOV. Here, we demonstrate that EBOVΔVP30 protects nonhuman primates against lethal infection with EBOV. Although EBOVΔVP30 is replication-incompetent, we additionally inactivated the vaccine with hydrogen peroxide; the chemically inactivated vaccine remained antigenic and protective in nonhuman primates. EBOVΔVP30 thus represents a safe, efficacious whole EBOV vaccine candidate that differs from other EBOV vaccine platforms in that it presents all viral proteins and the viral RNA to the host immune system, which might contribute to protective immune responses.
http://www.sciencemag.org/conten ... 1-8e95-17d0e19bfe07 |
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