Please use this identifier to cite or link to this item: http://dspace.umh.es/handle/11000/6986

IFIT5 Participates in the Antiviral Mechanisms of Rainbow Trout Red Blood Cells

Title:
IFIT5 Participates in the Antiviral Mechanisms of Rainbow Trout Red Blood Cells
Authors:
Chico, Verónica
Salvador Mira, Maria Elizabhet
Nombela Díaz, Iván
Puente Marín, Sara
Ciordia, Sergio
Mena, María Carmen
Perez, Luis
Coll, Julio
Guzman, Fanny
Encinar Hidalgo, Jose Antonio
Mercado, Luis
Ortega Villaizan, María del Mar
Issue Date:
2019-03-07
Abstract:
Viral hemorrhagic septicemia virus (VHSV) infection appears to be halted in rainbow trout nucleated red blood cells (RBCs). Diverse mechanisms are thought to be related to the antiviral immune response of rainbow trout RBCs to VHSV. However, the specific rainbow trout RBC proteins that interact directly with VHSV are still unknown. In an attempt to identify VHSV-RBC protein interactions, we characterized the immunoprecipitated (IP) proteome of RBCs exposed to VHSV using an antibody against the N protein of VHSV. The IP proteomic characterization identified 31 proteins by mass spectrometry analysis. Among them, we identified interferon-induced protein with tetratricopeptide repeats 5 (IFIT5), a protein belonging to a family of proteins that are induced after the production of type I interferon. Importantly, IFIT5 has been implicated in the antiviral immune response. We confirmed the participation of IFIT5 in the rainbow trout RBC antiviral response by examining the expression profile of IFIT5 in RBCs after VHSV exposure at transcriptional and protein levels. We detected a correlation between the highest IFIT5 expression levels and the decline in VHSV replication at 6 h post-exposure. In addition, silencing ifit5 resulted in a significant increase in VHSV replication in RBCs. Moreover, an increase in VHSV replication was observed in RBCs when the IFIT5 RNA-binding pocket cavity was modulated by using a natural compound from the SuperNatural II database. We performed a proximity ligation assay and detected a significant increase in positive cells among VHSV-exposed RBCs compared to unexposed RBCs, indicating protein-protein colocalization between IFIT5 and the glycoprotein G of VHSV. In summary, these results suggest a possible role of IFIT5 in the antiviral response of RBCs against VHSV.
Keywords/Subjects:
rainbow trout
FIT5
red blood cells
erythrocyte
VHSV
antiviral immune response
mmunoprecipitate
proteomic
Type of document:
application/pdf
Access rights:
info:eu-repo/semantics/openAccess
Appears in Collections:
Instituto de Biología Molecular y Celular



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