[Biological properties of a prolonged action interferon inductor].

Aim: Evaluation of composite formulation of yeast double stranded RNA with polyglucinum (dsRNA-PG) effect on non-specific antiviral resistance factors in mice in comparison with commercial formulation Ridostin.

Materials And Methods: dsRNA and Ridostin formulations were injected intramuscularly once at the dose of 5 mg/ml, polyglucinum--at the dose of 3.75 mg/ml.

Pharmacokinetics and antitumor effects of the drug containing TNF-α in nanoparticles.

Antitumor activity of TNF-α incorporated in nanoparticles (VLP-TNF-α) and dynamics of its accumulation and elimination from the blood and tumor tissue were studied in ICR mice. The VLP-TNF-α preparation exhibited higher antitumor activity compared to free TNF-α, presumably due to longer circulation of the cytokine in the blood and its more intensive accumulation by tumor tissue.

[Antitumor properties of a liposomal form of a differentiation factor HLDF fragment in cultured cells].

Cytotoxic properties of a liposomal form of the HLDF6 hexapeptide, representing an HL-60 cell differentiation factor fragment, have been studied on a murine primary lymphosarcoma cell culture. It is established that the liposomal HLDF6 peptide is capable of inhibiting proliferation and enhancing death of the cells of both LS and RLS lymphosarcoma strains distinguished by their sensitivity to cytostatic agents. The effect of the preparation is determined by its antiproliferative and apoptogenic actions on the cells.