Olga A Bezborodova

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Gene-directed enzyme prodrug therapy (GDEPT) represents a technology to improve drug selectivity for cancer cells. It consists of delivery into tumor cells of a suicide gene responsible for in situ conversion of a prodrug into cytotoxic metabolites. Major limitations of GDEPT that hinder its clinical application include inefficient delivery into cancer(More)
To determine the role of intramitochondrial protein synthesis (PS) and degradation (PD) in contractile activity-induced mitochondrial biogenesis, we evaluated rates of [(35)S]methionine incorporation into protein in isolated rat muscle subsarcolemmal (SS) and intermyofibrillar (IMF) mitochondria. Rates of PS ranged from 47 to 125% greater (P < 0.05) in IMF(More)
The Ad5-Lf pseudoadenovirus nanostructure (RPAN) was produced using homologous recombination in E. coli cells. This construction provided efficient expression of the Lf gene in permissive cell culture with high production rate of recombinant protein similar to native human Lf in some physical, chemical, and biological properties. Single intravenous(More)
The human iron-binding protein lactoferrin (hLf) has been implicated in a number of important physiological pathways, including those regulating immune function and tumor growth. In an effort to develop an efficient system for production of recombinant hLf (rhLf) that is structurally and functionally equivalent to the natural protein, we generated a(More)
The influence of neutral and ionic polysaccharides on the antioxidant (AOA) and detoxifying activities of lactoferrin (LF) and the duration of its circulation in the body was studied. In addition to natural polymers, we studied chitosan synthetic derivatives with different functional groups. On the basis of AOA test, five polysaccharides were selected. The(More)
Sixteen peptides differing in structure from the delta sleep inducing peptide (DSIP) by one to two substitutions of amino acid residues have been synthesized to study the possibility of their application in oncology. The antioxidant properties of the peptides in vitro and their detoxifying activity in vivo have been examined on a model of toxicosis caused(More)
Antitumor efficacy of the combined suicide gene therapy and radiotherapy was studied on the model of CT26 murine colon adenocarcinoma. CMV-FCU1-IRES-mGM-CSF-pGL3 construct with PEG-PEI-TAT (FCU1–mGM/5-FC) block copolymer as a vector was used for intratumoral administration. Tumors were irradiated with a single 5 Gy dose. The efficacy was evaluated according(More)
Comparative antimicrobial activity of lactoferrins from various sources (native lactoferrin from Laprot, human hololactoferrin, recombinant human lactoferrin isolated from the cultural medium of permissive cell culture transfected using pseudoadenovirus nanostructure with the human lactoferrin gene, and native bovine lactoferrin) was studied to prove the(More)
The present article was designed to report the results of comparative analysis of the methods for the estimation of the biological age based on the measurement of a number of anthropometric and functional characteristics in the relatively healthy persons at the age varying from 30 years to 75 years. The study involved 277 individuals (143 women and 134(More)
A recombinant pseudoadenovirus nanostructure (RPAN) based on human adenovirus of the 5th serotype that carries the human Lf gene was constructed to develop an effective system of human lactoferrin (Lf) production. It was shown using the model of toxicosis induced by cisplatin (DDP) that RPAN that carries the expressing cassette with a human Lf gene in its(More)