Abstract
ABSTRACTOur previous studies on leukemia cells L1210 and cervical cancer HeLa cells revealed cytotoxic effects of the 7-ethyl 9-ethyl-6-oxo-6,9-dihydro[1,2,5]selenadiazolo[3,4-h]quinoline-7-carboxylate (E2h), a new synthetically prepared quinolone derivative, toward selected cancer cell lines. The aim of the present study was to examine the cytotoxicity of E2h toward next cell lines and tissues; that is, human cancer HL-60 and A549 cells, human non-cancer fibroblast BHNF-1 cells, and reconstructed human epidermis tissues. Further we investigated the immunomodulatory activity of E2h on murine macrophage RAW 264.7 cells. Selenadiazoloquinolone E2h induced specific antiproliferative/cytotoxic activity against leukemia HL-60 cells and is the potent inducer of apoptotic cell death. Quinolone derivative demonstrated the immunomodulatory activities on RAW 264.7 cell line murine macrophages. The immunobiological studies revealed time- and concentration-dependent effective immunomodulation of pro- and anti-inflammatory cytokines’ release and antiproliferative/cytotoxic effect following exposure of RAW 264.7 cells to E2h.Abbreviations: DMEM, Dulbecco’s modified eagle medium; DMSO, Dimethylsulfoxide; EtBr, Ethidium bromide; PI, Propidium iodide; E2h, 7-ethyl 9-ethyl-6-oxo-6,9-dihydro[1,2,5]selenadiazolo[3,4-h]quinoline-7-carboxylate.
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