Abstract:
:To determine the role of piscine anti-viral cytotoxic cells, we analyzed the response of channel catfish to Ictalurid herpesvirus 1, commonly designated channel catfish virus (CCV). Peripheral blood leukocytes (PBL) from catfish immunized with MHC-matched, CCV-infected G14D cells (G14D-CCV) showed marked lysis of G14D-CCV but little to no lysis of uninfected allogenic (3B11) or syngeneic (G14D) cells. Expansion of effectors by in vitro culture in the presence of irradiated G14D-CCV cells generated cultures with enhanced cytotoxicity and often broader target range. Cytotoxic effectors expressed rearranged TCR genes, perforin, granzyme, and IFN-γ. Four clonal cytotoxic lines were developed and unique TCR gene rearrangements including γδ were detected. Furthermore, catfish CTL clones were either CD4+/CD8- or CD4-/CD8-. Two CTL lines showed markedly enhanced killing of G14D-CCV targets, while the other two lines displayed a broader target range. Collectively, catfish virus-specific CTL display unique features that illustrate the diversity of the ectothermic vertebrate immune response.
journal_name
Virologyjournal_title
Virologyauthors
Taylor EB,Chinchar VG,Quiniou SMA,Wilson M,Bengtén Edoi
10.1016/j.virol.2019.11.014subject
Has Abstractpub_date
2020-01-15 00:00:00pages
184-194eissn
0042-6822issn
1096-0341pii
S0042-6822(19)30333-2journal_volume
540pub_type
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