Biopolym. Cell. 2021; 37(5):357-368.
http://dx.doi.org/10.7124/bc.000A61
Molecular and Cell Biotechnologies
An influence of complexes of therapeutic antisense oligodeoxynucleotides with cationic polymers on cell respiration
1Kozak M. R., 1Ostapiv D. D., 2Mitina N. Y., 1Petruh I. M., 2Volianiuk K. A., 2Zaichenko A. S., 3Vlizlo V. V.
  1. Institute of Animal Biology, NAAS of Ukraine
    38, Stusa Str., Lviv, Ukraine, 79034
  2. Lviv Polytechnic National University
    12, S. Bandery Str., Lviv, Ukraine, 79013
  3. Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies of Lviv
    50, Pekarska Str., Lviv, Ukraine, 79010

Abstract

Antisense-DNA technologies are new strategy for the treatment of prion infections. This strategy requires prolonged administrations of the drugs, which are likely to alter cell redox processes. Aim. The evaluation of cell survival and intensity of oxidative processes in vitro under the influence of antisense-oligodeoxynucleotides (asODNs) as cell prion inhibitors (PrPC) complexed with cationic polyelectrolyte. Methods. Free diffusion in agarose gel, study of cytotoxic action on model cells (bull semen), polarography and potentiometric measurement of oxygen uptake, statistical analysis. Results. Poly(dimethylaminoethyl methacrylate)[-]based surfactants form complexes with asODNs. Polyethylene glycol containing surfactants increase oxygen uptake by cells: by 18 % (VI), by 37 % (IV) and 2.6-fold for V. An addition of the IV‑asODNs complex into [the] cell medium did not affect the oxygen absorption; however, it increased reduction processes. Interpolyelectrolyte complex V-asODNs increased the cell respiration by 1.95 times. VI separately increased the cell absorption of oxygen by 18 % and in the complex with asODNs — by 36 %. VI possessed the lowest cytotoxicity. Conclusions. New cationic polyelectrolytes form complexes with asODNs. VI causes the smallest effect on the RedOx processes of model cells and possesses the lowest cytotoxic effect.
Keywords: antisense oligodeoxynucleotides, polyelectrolyte complexes, cytotoxicity, redox processes, prion
Full text: (PDF, in English)

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