Aim: Study species specificity of human lymphocyte interferon alpha in vitro in cell cultures of swine origin for expansion of cell line spectrum for interferon titration and control of newly created interferons and interferon-like preparations in vivo in mini-pig model.
Materials And Methods: Cell cultures of various species origin were used: Vero (monkey kidney), MDBK (bull kidney), HEK 293T (human embryo kidney), PK-15 (swine kidney), SPEV(swine embryo kidney), PTP (swine testicles), MDCK (canine kidney), RK-13 (rabbit kidney). Human lymphocyte interferon alpha (hINF-alpha) from Biomed company (1000 IU/ml), established in MDBK cells, was tested. Vesicular stomatitis virus (Indiana strain) was used. Human plasma was obtained from heparin-treated venous blood in the process of human peripheral blood lymphocyte isolation in medium for lymphocyte separation (Ficoll with a density of 1.077 g/cm3).
Results: Vesicular stomatitis virus, adapted to Vero cells, was established to have the least active reproduction in Vero and MDBK and reproduces more actively in cell of swine origin by 0.25 - 0.75 lg TCD50. At the same time, virus, adapted to cells of swine origin, reproduces more actively by 2 - 3 lg TCD50 in both cells of swine origin and Vero and MDBK.
Conclusion: A possibility of titration of hINF-alpha in cells of swine origin was shown for both 100 doses of the indicator virus and low virus doses (5 and 10). This allows to determine low titers of hINF-alpha in blood plasma as one of the important indicators of interferon status--sera hINF-alpha.
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