Nemorubicin hydrochloride

Nemorubicin hydrochloride has antitumor activity, with IC₇₀s of 578 ± 137 nM, 468 ± 45 nM, 193 ± 28 nM, 191 ± 19 nM, 68 ± 12 nM, and 131 ± 9 nM for HT-29, A2780, DU145, EM-2, Jurkat and CEM cell lines, respectively^[1]. Nemorubicin acts through nucleotide excision repair (NER) system to exert its activity. Nemorubicin (0-0.3 μM) is more active in the L1210/DDP cells with intact NER than in the XPG-deficient L1210/0 cells. Cells resistant to nemorubicin show increased sensitivity to UV damage^[3]. Nemorubicin is cytotoxic to 9L/3A4 cells, with an IC₅₀ of 0.2 nM, 120-fold lower than that of P450-deficient 9L cells (IC₅₀, 23.9 nM). Nemorubicin also potently inhibits Adeno-3A4 infected U251 cells with IC₅₀ of 1.4 nM. P450 reductase overexpression enhances cytotoxicity of Nemorubicin^[4].

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