| Name | Pirarubicin |
| Description | Pirarubicin (Theprubicin) is an anthracycline antibiotic. It is also a DNA/RNA synthesis inhibitor that intercalates into DNA and interacts with topoisomerase II, utilized as an antineoplastic agent. |
| In vitro | Pirarubicin is rapidly taken up by M5076 cells and the intracellular concentration of pirarubicin reaches more than 2.5-fold that of doxorubicin. Pirarubicin is more effective than doxorubicin in terms of the 50% cell growth-inhibitory concentration in vitro. [1] Pirarubicin causes G0/G1 cell cycle arrest in MG-63 cells. Pirarubicin suppresses the expression of PCNA, cyclin D1, cyclin E and Bcl-2, and increases Bax expression in MG-63 cells. [2] Pirarubicin markedly relaxes contractions induced by noradrenaline (0.1 μM) in the aorta with endothelium, but not in that without endothelium. Pirarubicin-induced relaxation is inhibited by methylene blue (5 μM), hydroquinone (100 μM), phenidone (50 μM), haemoglobin (1 μM) and p-bromophenacyl bromide (50 μM), but not by indomethacin (25 μM). [3] Pirarubicin is approximately 2-5 times more potent than Adriamycin in SKUT1B, HEC1A, and BG1 cell lines. Pirarubicin also displays a reverse dose-response pattern of G2 block so that at high dose, cell cycle kinetics would mirror those of untreated controls. [4] |
| In vivo | Pirarubicin reduces the tumor weight to 60% of the control level in M5076 solid tumor-bearing mice, although doxorubicin has no effect. [1] Pirarubicin and Epirubicin are effective against V x 2 tumor when injected via the hepatic intra-arterial (h.i.a.) route, the activity of Pirarubicin is stronger than that of Epirubicin. [5] |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
| Solubility Information | Ethanol : < 1 mg/mL (insoluble or slightly soluble)
H2O : < 1 mg/mL (insoluble or slightly soluble)
DMSO : 6.26 mg/mL (9.98 mM), Sonication is recommended.
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| Keywords | Topoisomerase | Bacterial | inhibit | Pirarubicin | Autophagy | Inhibitor | Antibiotic |
| Inhibitors Related | Neomycin sulfate | Dimethyl sulfoxide |
United States
