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Synthetically derived bat influenza A-like viruses reveal a cell type- but not species-specific tropism.


ABSTRACT: Two novel influenza A-like viral genome sequences have recently been identified in Central and South American fruit bats and provisionally designated "HL17NL10" and "HL18NL11." All efforts to isolate infectious virus from bats or to generate these viruses by reverse genetics have failed to date. Recombinant vesicular stomatitis virus (VSV) encoding the hemagglutinin-like envelope glycoproteins HL17 or HL18 in place of the VSV glycoprotein were generated to identify cell lines that are susceptible to bat influenza A-like virus entry. More than 30 cell lines derived from various species were screened but only a few cell lines were found to be susceptible, including Madin-Darby canine kidney type II (MDCK II) cells. The identification of cell lines susceptible to VSV chimeras allowed us to recover recombinant HL17NL10 and HL18NL11 viruses from synthetic DNA. Both influenza A-like viruses established a productive infection in MDCK II cells; however, HL18NL11 replicated more efficiently than HL17NL10 in this cell line. Unlike conventional influenza A viruses, bat influenza A-like viruses started the infection preferentially at the basolateral membrane of polarized MDCK II cells; however, similar to conventional influenza A viruses, bat influenza A-like viruses were released primarily from the apical site. The ability of HL18NL11 or HL17NL10 viruses to infect canine and human cells might reflect a zoonotic potential of these recently identified bat viruses.

SUBMITTER: Moreira EA 

PROVIDER: S-EPMC5111703 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature

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Synthetically derived bat influenza A-like viruses reveal a cell type- but not species-specific tropism.

Moreira Étori Aguiar ÉA   Locher Samira S   Kolesnikova Larissa L   Bolte Hardin H   Aydillo Teresa T   García-Sastre Adolfo A   Schwemmle Martin M   Zimmer Gert G  

Proceedings of the National Academy of Sciences of the United States of America 20161024 45


Two novel influenza A-like viral genome sequences have recently been identified in Central and South American fruit bats and provisionally designated "HL17NL10" and "HL18NL11." All efforts to isolate infectious virus from bats or to generate these viruses by reverse genetics have failed to date. Recombinant vesicular stomatitis virus (VSV) encoding the hemagglutinin-like envelope glycoproteins HL17 or HL18 in place of the VSV glycoprotein were generated to identify cell lines that are susceptibl  ...[more]

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