Anatoliy Anisimov

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We studied the ability of inducers and inhibitors of erythroid differentiation of K562 leukemia cells, such as sodium butyrate, dimethyl sulfoxide, and phorbol-12-myristate-13-acetate, respectively, to modulate sensitivity of these cells to non-specific lysis (non-restricted with respect to antigens of the major histocompatibility complex) mediated by(More)
Induction of hemoglobin synthesis in K562 cells by thymidine (2 mM)in vitro did not significantly enhance major histocompatibility complex antigen-unrestricted lysis of splenocyte-exposed K562 cells. Inhibition of thymidine-induced hemoglobin synthesis by simultaneous incubation of cells with thymidine and phorbol 12-myristate 13-acetate (100 nM) decreased(More)
Earlier we showed that 4-hours treatment of cells K562 with the GTP-binding protein activator AlF4- (10 mM NaF + 20 microM AlCl3) increased the DNA fragmentation on an average to 5% of the total 3H-thymidine-labeled DNA. The viability of cells under these conditions did not change. It has been suggested that gene toxic action of AlF4- is a result of cell(More)
It is shown that a 19-h pretreatment of rat splenocytes with 1 μM phorbol 12-myristate 13-acetate followed by a 42-h incubation with human recombinant interleukin-2 inhibits nonspecific cytotoxicity of these cells toward the target YAC-1 cells. By contrast, proliferation of splenocytes and thymocytes incubated under the same conditons increases(More)
We studied the effect of certain differentiation inducers-thymidine, sodium butyrate, and dimethyl sulfoxide--on the cells of parental line K562 and the derived sublines resistant to quinoline xenobiotics 2-(4-dimethylaminostyryl)quinoline 1-oxide or 4-nitroquinoline 1-oxide. The cells of the both derived sublines demonstrate cross-resistance to these(More)
The influence of the number of differentiating agents on sensitivity of human erythroleukemic cells K562 to human leukocyte-mediated non-MHC-restricted lysis was studied. It has been shown that a 4-day treatment of cells K562 by dexamethasone (1 microM) or phorbol-12-myristate-13-acetate (100 nM) leads to a significant decrease in sensitivity of the treated(More)
The literature data on the influence of a large group of cancer cell differentiation inducers on the modulation of their susceptibility to non-MHC-restricted lysis (non-specific cytotoxicity, NCT) by natural killer (NK) cells have been analysed. A possible association between the apoptogenic action of differentiation inducers and their ability to modulate(More)
The differentiating effect of DMSO on K562 cells was studied against the background of pretreatment of the cells by the modulators of activities of protein kinase C and Ca signaling, phorbol 12-myristate 13-acetate, and ionophore A23187. The 2-hour pretreatment of K562 cells with A23187 (1 μM), rather than phorbol 12-myristate 13-acetate (0.1 μM), led to(More)