Jamaican fruit bats (Artibeus jamaicensis) competence for Ebola virus but not Marburg virus is driven by intrinsic differences in viral entry and IFN-I signaling antagonism.
Van Tol, S.; Port, J.; Fischer, R.; Gallogly, S.; Bushmaker, T.; Griffin, A.; Schulz, J. E.; Carmody, A. B.; Myers, L.; Crowley, D.; Falvo, C.; Riopelle, J.; Wickenhagen, A.; Clancy, C.; Lovaglio, J.; Shaia, C.; Saturday, G.; Prado-Smith, J.; Hr, Y.; Lack, J.; Martens, C.; Anzick, S.; Kendall, L.; Schountz, T.; Plowright, R.; Marzi, A.; Munster, V.
Show abstract
Ebola virus (EBOV) and Marburg virus (MARV) are zoonotic filoviruses that cause hemorrhagic fever in humans. Bat species in both Chiropteran suborders host filoviruses, suggesting that bats may have coevolved with this viral family. Correlative data implicate bats as natural EBOV hosts, but neither a full-length genome nor an EBOV isolate has been found in any bats sampled. Here, we modelled filovirus infection in the Jamaican fruit bat (JFB), Artibeus jamaicensis. Bats were inoculated with either EBOV or MARV through a combination of oral, intranasal, and subcutaneous routes. EBOV-infected bats supported systemic virus replication and shed infectious virus orally. In contrast, MARV replicated only transiently and was not shed. In vitro, JFB cells replicate EBOV more efficiently than MARV, and MARV infection induced innate antiviral responses that EBOV efficiently suppressed. Experiments using VSV pseudoparticles or replicating VSV expressing the EBOV or MARV glycoprotein demonstrated an advantage for EBOV entry and replication early, respectively, in JFB cells. Overall, this study describes filovirus species-specific phenotypes for both JFB and their cells.
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