Independent loss events of a functional tetherin gene in galliform birds
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378050%3A_____%2F23%3A00576431" target="_blank" >RIV/68378050:_____/23:00576431 - isvavai.cz</a>
Result on the web
<a href="https://journals.asm.org/doi/10.1128/jvi.00803-23" target="_blank" >https://journals.asm.org/doi/10.1128/jvi.00803-23</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1128/jvi.00803-23" target="_blank" >10.1128/jvi.00803-23</a>
Alternative languages
Result language
angličtina
Original language name
Independent loss events of a functional tetherin gene in galliform birds
Original language description
The restriction factor tetherin (bone marrow stromal cell antigen 2) is an interferon-inducible protein preventing the release of newly formed viral particles from infected cells. Tetherin displays antiviral activity against a broad range of enveloped viruses, including retroviruses. While tetherin orthologs have been identified in several mammalian species, little is known about its expression and activity in non-mammalian vertebrates, including birds. We have previously described antiviral activity of chicken (Gallus gallus) tetherin against the prototypical avian retrovirus avian sarcoma and leukosis virus (ASLV). Here, we report the loss of functional tetherin orthologs in several galliform birds, including turkey (Meleagris gallopavo) and Mikado pheasant (Syrmaticus mikado). In both species, the tetherin coding sequence acquired inactivating mutations, including an in-frame stop codon and frameshifting deletions. Similar to the chicken tetherin ortholog, reconstituted turkey and Mikado pheasant tetherins restricted ASLV and HIV-1 indicating antiviral activity of the ancestor protein. Previous work revealed the presence of the TMCC(aT) gene in close proximity to tetherin, encoding a protein with tetherin-like structure in multiple vertebrates. Intriguingly, ectopic overexpression of chicken and turkey TMCC(aT) proteins in human cells decreased total HIV-1 yield. In contrast to tetherin, however, TMCC(aT) did not specifically restrict virion release, suggesting distinct antiviral mechanisms. In line with this, IFNa stimulation did not reduce the release of ASLV particles from infected turkey cells. Overall, our data describe the loss of functional tetherin genes in several galliform species and identify an antiviral activity of the related TMCC(aT) protein that is mechanistically different from that of tetherin.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10608 - Biochemistry and molecular biology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Virology
ISSN
0022-538X
e-ISSN
1098-5514
Volume of the periodical
97
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
e0080323
UT code for WoS article
001068528200004
EID of the result in the Scopus database
2-s2.0-85175823586