Signaling and physiological activity of the NO-donating agent TNICthio in human blood lymphocytes, Jurkat and MCF7 cell lines
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Signaling and physiological activities of the crystalline tetranitrosyl iron complex with thiosulfate—a NO-donor (TNICthio) were first studied on human cells in conditions of mono and combined application of H2S and antioxidants. Comparative studies were performed on three cell lines: normal and leukemic T lymphocytes (Jurkat cells) and breast cancer MCF-7 cells (human breast adenocarcinoma). Also established was a high biological activity of TNICthio, as well as correlation between the levels of reactive oxygen species generation, the formation of double-strand breaks (DSB) in DNA and cell proliferation. The amount of DNA DSB repair in normal lymphocytes was tenfold higher than in leukemic cells. Inorganic H2S donor sodium hydrosulfide (NaHS) had insignificant effects on the production of reactive oxygen species and generation of DNA DSB in the cells of all the lines under study. However, H2S increased the tolerance of cells to the stress response after combined cell treatment with NO + H2S. 0.5 mM NO-donor and 0.1 mM antitumor antibiotic doxorubicin were equally effective generators of reactive oxygen species in MCF-7 cells; however, antiproliferative activity of the NO-donor, in this case, proved to be twice higher. The results obtained in this work may be promising for the prediction of pro- and antioxidant properties of the new NO and H2S donating compounds, as well as for the development of methods for complex anticancer therapy.
KeywordsNO donor H2S Normal lymphocytes Cancer cells—Jurkat T-cells, MCF-7
Authors thank Dr. Sci. N. A. Sanina for providing TNICthio.
Compliance with ethical standards
Conflict of interest
S. Vasilieva declares that she has no conflict of interest. M. Petrishcheva declares that she has no conflict of interest. A. Osipov declares that he has no conflict of interest. E. Yashkina declares that she has no conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
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