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. 2002 Dec 9;141(2):141–151. doi: 10.1016/0923-2494(90)90133-J

Characterization of blood mononuclear cells producing IFNα following induction by coronavirus-infected cells (porcine transmissible gastroenteritis virus)

B Charley 1, L Lavenant 1
PMCID: PMC7135751  PMID: 2167506

Abstract

Porcine blood mononuclear cells (PBMC) were shown to produce interferon-α (IFNα) following incubation with cells infected by a coronavirus, transmissible gastroenteritis virus. Monoclonal antibodies (mAb) with specificities for leukocyte subsets and major histocompatibility complex (MHC) antigens were used to characterize IFNα producer cells. The production of IFNα was found to be a function of non-phagocytic, non-adherent, non-T, non-B, CD4+ (and to a lesser extent CD8+) MHC-class-II-positive cells. Furthermore, addition of anti-MHC (class II) mAb during PBMC incubation with virus-infected cells reduced IFN yields, suggesting that masking of these surface antigens alters PBMC responsiveness to IFN induction.

Keywords: Interferon-α, Leukocyte, MHC, Coronavirus; Transmissible gastroenteritis virus, mAb, PBMC

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