MitoxantroneMitoxantrone
MedChemExpress (MCE)
HY-13502
65271-80-9
Mitozantrone
NSC 301739
99.58%
-20°C, protect from light *In solvent : -80°C, 6 months
-20°C, 1 month (protect from light)
Room temperature in continental US
may vary elsewhere.
Mitoxantrone is a potent topoisomerase II inhibitor. Mitoxantrone also inhibits protein kinase C (PKC) activity with an IC50 of 8.5 μM. Mitoxantrone induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone shows antitumor activity. Mitoxantrone also has anti-orthopoxvirus activity with EC50s of 0.25 μM and and 0.8 μM for cowpox and monkeypox, respectively.
Mitoxantrone inhibits PKC in a competitive manner with respect to histone H1, and its Ki value is 6.3 μM and in a non-competitive manner with respect to phosphatidylserine and ATP[1]. Mitoxantrone (0.5 μg/mL, 48 h) induces a decrease in B-CLL cells. Mitoxantrone induces DNA fragmentation and the proteolytic cleavage of poly(ADP-ribose) polymerase (PARP), demonstrating that the cytotoxic effect of Mitoxantrone is due to induction of apoptosis[2]. Mitoxantrone shows cytotoxicity to human breast carcinoma cell lines MDA-MB-231 and MCF-7 with IC50 values of 18 and 196 nM, respectively[3].
Mitoxantrone (IP, 0-3.2 mg/kg/day) produces a statistically significant number of 60-day survivors at 1.6 mg/kg in mice with IP implanted L1210 leukemia[4]. Mitoxantrone (IV, 0-3.2 mg/kg/day) shows effective antitumor activities and produces a 60% ILS (increase in lifespan) at 3.2 mg/kg in SC implanted Lewis lung carcinoma[4].
Mice: Mitoxantrone is tested for antitumor activity against experimental tumors in mice and the results are compared with those of seven antitumor antibiotics. The drugs are given IP or IV, in general on days 1, 5, and 9 following tumor inoculation. Mitoxantrone is given IP at the optimal dose (1.6 mg/kg/day
as a free base)[4].
The human breast carcinoma cell lines MDA-MB-231 and MCF-7 are seeded in standard 96-well plates. One day after seeding, the culture medium is changed and replaced by medium containing different concentration of Mitoxantrone (10-5 to 5 μM) with or without DHA (30 μM) during 7 days. Viability of cells are measured as a whole by the tetrazolium salt assay[3].
PKC 8.5 μM (IC50) Topoisomerase II
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[1]. Takeuchi N, et al. Inhibitory effect of mitoxantrone on activity of protein kinase C and growth of HL60 cells. J Biochem. 1992 Dec
112(6):762-7. [Content Brief]
[2]. Bellosillo B, et al. Mitoxantrone, a topoisomerase II inhibitor, induces apoptosis of B-chronic lymphocytic leukaemia cells. Br J Haematol. 1998 Jan
100(1):142-6. [Content Brief]
[3]. Vibet S, et al. Differential subcellular distribution of mitoxantrone in relation to chemosensitization in two human breast cancer cell lines. Drug Metab Dispos. 2007 May
35(5):822-8. [Content Brief]
[4]. Fujimoto S, et al. Antitumor activity of mitoxantrone against murine experimental tumors: comparative analysis against various antitumor antibiotics. Cancer Chemother Pharmacol. 1982
8(2):157-62. [Content Brief]
[5]. Sharon E Altmann, et al. Inhibition of cowpox virus and monkeypox virus infection by mitoxantrone. Antiviral Res. 2012 Feb
93(2):305-308. [Content Brief]