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Title: Inhibition of Borna disease virus replication by an endogenous bornavirus-like element in the ground squirrel genome.
Authors: Fujino, Kan
Horie, Masayuki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-4682-7698 (unconfirmed)
Honda, Tomoyuki
Merriman, Dana K
Tomonaga, Keizo  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-0405-7103 (unconfirmed)
Author's alias: 朝長, 啓造
Keywords: endogenous nonretroviral viruses
antiviral immunity
Issue Date: 9-Sep-2014
Publisher: National Academy of Sciences
Journal title: Proceedings of the National Academy of Sciences of the United States of America
Volume: 111
Issue: 36
Start page: 13175
End page: 13180
Abstract: Animal genomes contain endogenous viral sequences, such as endogenous retroviruses and retrotransposons. Recently, we and others discovered that nonretroviral viruses also have been endogenized in many vertebrate genomes. Bornaviruses belong to the Mononegavirales and have left endogenous fragments, called "endogenous bornavirus-like elements" (EBLs), in the genomes of many mammals. The striking features of EBLs are that they contain relatively long ORFs which have high sequence homology to the extant bornavirus proteins. Furthermore, some EBLs derived from bornavirus nucleoprotein (EBLNs) have been shown to be transcribed as mRNA and probably are translated into proteins. These features lead us to speculate that EBLs may function as cellular coopted genes. An EBLN element in the genome of the thirteen-lined ground squirrel (Ictidomys tridecemlineatus), itEBLN, encodes an ORF with 77% amino acid sequence identity to the current bornavirus nucleoprotein. In this study, we cloned itEBLN from the ground squirrel genome and investigated its involvement in Borna disease virus (BDV) replication. Interestingly, itEBLN, but not a human EBLN, colocalized with the viral factory in the nucleus and appeared to affect BDV polymerase activity by being incorporated into the viral ribonucleoprotein. Our data show that, as do certain endogenous retroviruses, itEBLN potentially may inhibit infection by related exogenous viruses in vivo.
Rights: © 2014 National Academy of Sciences.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/191002
DOI(Published Version): 10.1073/pnas.1407046111
PubMed ID: 25157155
Appears in Collections:Journal Articles

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