Biopolym. Cell. 2015; 31(6):465-472.
Viruses and Cell
Study of antiviral activity of a new plant origin preparation neoflazidum on a model of the hepatitis C virus
1Porva Yu. I., 1Rybalko S. L., 2Palchykovs’ka L. I., 1Atamanyuk V. P.
  1. Gromashevsky L. V. Institute of Epidemiology and Infection Diseases, NAMS of Ukraine
    5, Amosova Str., Kyiv, Ukraine, 03038
  2. Institute of Molecular Biology and Genetics, NAS of Ukraine
    150, Akademika Zabolotnoho Str., Kyiv, Ukraine, 03680


Aim. Investigation of antiviral activity of a new plant origin preparation – neoflazidum, a form of proteflazidum Methods. A model of hepatitis C virus-producing Jurkat cell culture (JurkatHCV) which has been previously transfected with complementary DNA preparations isolated from different types of hepatitis C virus (HCV). Results.To obtain these preparations, HCV RNA preparations were isolated from viral material of HCV-diseased patients, the transfecting agent Turbofect being used. The cytotoxic dose (CD50) was shown to be 37.2 μg/ml, the effective dose (ED50) being 0.46 μg/ml for the HCV type 3a; this dose, however, was as high as 3.7 μg/ml when neoflazidum had been tested for HCV type 1b. Therefore, the selectivity index for the HCV type 3a reached 80.8 in the JurkatHCV-3a cell system, being as low as 10.0 for the HCV type 1b. Conclusion. Using a model system RNAP T7, the antiviral neoflazidum activity was demonstrated to be realized due to interferons α- and γ-induction and RNA synthesis inhibition.
Keywords: antiviral activity, neoflazidum, hepatitis C virus, transfecting, interferons α- and γ-induction, model system RNAP T7


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