Daunorubicin HCl

Daunorubicin HCl is an inhibitor of DNA topoisomerase II [1].

Daunorubicin is an anthracycline antibiotic. It is also used as an effective chemotherapeutic agent against tumors especially acute myeloid leukaemia and acute lymphocytic leukaemia. Daunorubicin can affect the metabolism and synthesis of DNA and RNA. In the in vitro assay, daunorubicin inhibits the incorporation of thymidine and uridine into L1210 cells. It also inhibits the incorporation of labeled precursors into the isolated DNA and RNA from incubated cells. When treated with leukemic cells isolated from acute lymphocytic leukemia patients, daunorubicin significantly inhibits the biosynthesis of the DNA and RNA macromolecules [2, 3].

References:
[1] Hande K R. Etoposide: four decades of development of a topoisomerase II inhibitor. European Journal of Cancer, 1998, 34(10): 1514-1521.
[2] Momparler R L, Karon M, Siegel S E, et al. Effect of adriamycin on DNA, RNA, and protein synthesis in cell-free systems and intact cells. Cancer Research, 1976, 36(8): 2891-2895.
[3] Meriwether W D, Bachur N R. Inhibition of DNA and RNA metabolism by daunorubicin and adriamycin in L1210 mouse leukemia. Cancer research, 1972, 32(6): 1137-1142.

Disposition and metabolism of [14-14C] 4-demethoxydaunorubicin HCl (idarubicin) and [14-14C]daunorubicin HCl in the rat. A comparative study.[Pubmed:3456281]

Cancer Chemother Pharmacol. 1986;16(2):107-15.

The disposition of [14-14C]4-demethoxyDaunorubicin HCl ([14-14C]idarubicin HCl, [14C]IDR) and of [14-14C]Daunorubicin HCl ([14C]DNR) was studied in male Sprague Dawley rats. [14C]IDR was administered either IV at 0.25 mg/kg body weight or PO at 1 mg/kg body weight, whereas [14C]DNR was dosed IV at 1 mg/kg body weight. The main elimination route for both compounds was the bile, fecal excretion representing 0.75-0.8 times the total dose at 72 h. Radioactivity due to [14C]IDR-derived species is released by the tissues at a slower rate than activity derived from [14C]DNR. After IV treatment comparable plasma levels are obtained, but tissue radioactivity is markedly lower with [14C]IDR, in keeping with the lower dosage. The ratio of plasma to tissue radioactivity is even higher in animals treated PO with [14C]IDR, because of the more extensive metabolism after this route of administration. The 13-dihydro derivatives of both [14C]IDR and [14C]DNR are the main metabolites in tissues, but in the case of the former, products of phase II reactions become more important at later times in liver and kidney and in excreta.

Pharmacokinetics of CPX-351 (cytarabine/daunorubicin HCl) liposome injection in the mouse.[Pubmed:19009594]

J Pharm Sci. 2009 Jul;98(7):2540-8.

CPX-351 (cytarabine/daunorubicin liposome injection) is a liposomal formulation of a synergistic, fixed combination of the antineoplastic drugs cytarabine and daunorubicin for intravenous infusion. The two drugs are contained within the liposome in a 5:1 molar ratio, shown to be synergistic in vitro and in murine models of hematological malignancies. Mice were given a single intravenous dose of CPX-351 or conventional cytarabine and daunorubicin in saline and plasma and bone marrow were assayed for drug and lipid concentrations. A pharmacokinetic model was developed to assess the disposition of the coencapsulated drugs in mice, including the free and encapsulated fractions after measurement of the total plasma concentrations. Through the measurement of the loss of both encapsulated drug and liposomal lipid from the plasma, the routes of elimination, extravasation (uptake of encapsulated drugs into the tissues) and leak (passage of the drugs across the liposome membrane into the plasma), could be discerned. Knowing the leak rates from the liposome into the plasma and the plasma pharmacokinetics of the conventional drugs, the free drug concentrations could be predicted. The free concentrations in the bone marrow from the liposome leak in plasma could also be predicted using the bone marrow responses to the conventional drugs.

Signaling pathways activated by daunorubicin.[Pubmed:11493433]

Blood. 2001 Aug 15;98(4):913-24.

The anthracycline daunorubicin is widely used in the treatment of acute nonlymphocytic leukemia. The drug has, of course, been the object of intense basic research, as well as preclinical and clinical study. As reviewed in this article, evidence stemming from this research clearly demonstrates that cell response to daunorubicin is highly regulated by multiple signaling events, including a sphingomyelinase-initiated sphingomyelin-ceramide pathway, mitogen-activated kinase and stress-activated protein/c-Jun N-terminal kinase activation, transcription factors such as nuclear factor kappa B, as well as the Fas/Fas-ligand system. These pathways are themselves influenced by a number of lipid products (diacylglycerol, sphingosine-1 phosphate, and glucosyl ceramide), reactive oxygen species, oncogenes (such as the tumor suppressor gene p53), protein kinases (protein kinase C and phosphoinositide-3 kinase), and external stimuli (hematopoietic growth factors and the extracellular matrix). In light of the complexity and diversity of these observations, a comprehensive review has been attempted toward the understanding of their individual implication (and regulation) in daunorubicin-induced signaling. (Blood. 2001;98:913-924)

A critical evaluation of the mechanisms of action proposed for the antitumor effects of the anthracycline antibiotics adriamycin and daunorubicin.[Pubmed:10075079]

Biochem Pharmacol. 1999 Apr 1;57(7):727-41.

The mechanisms responsible for the antiproliferative and cytotoxic effects of the anthracycline antibiotics doxorubicin (Adriamycin) and daunorubicin (daunomycin) have been the subject of considerable controversy. This commentary addresses the potential role of DNA synthesis inhibition, free radical formation and lipid peroxidation, DNA binding and alkylation, DNA cross-linking, interference with DNA strand separation and helicase activity, direct membrane effects, and the initiation of DNA damage via the inhibition of topoisomerase II in the interaction of these drugs with the tumor cell. One premise underlying this analysis is that only studies utilizing drug concentrations that reflect the plasma levels in the patient after either bolus administration or continuous infusion are considered to reflect the basis for drug action in the clinic. The role of free radicals in anthracycline cardiotoxicity is also discussed.

Daunorubicin and doxorubicin, anthracycline antibiotics, a physicochemical and biological review.[Pubmed:6380596]

Biochimie. 1984 May;66(5):333-52.

Daunorubicin and doxorubicin, two antibiotics belonging to the anthracycline group, are widely used in human cancer chemotherapy. Their activity has been attributed mainly to their intercalation between the base pairs of native DNA. Complex formation between daunorubicin or doxorubicin with polydeoxyribonucleotides and DNAs of various base composition or chromatins has been investigated by numerous techniques. Many authors have tried to correlate biological and therapeutic activities with the affinity of the drugs for DNA or some specific sequences of DNA. In vivo these anthracycline drugs cause DNA damage such as fragmentation and single-strand breaks. The mechanism of action of anthracyclines involves the inhibition of RNA and DNA syntheses. There exists two limiting factors in the use of anthracyclines as antitumoral agents: a chronic or acute cardiotoxicity and a spontaneous or acquired resistance. In both cases, there is probably an action at the membrane level. It has to be noted that daunorubicin and doxorubicin have a particular affinity for phospholipids and that the development of resistance is linked to some membrane alterations.

Daunorubicin Hydrochloride (Daunomycin Hydrochloride; RP 13057 Hydrochloride; Rubidomycin Hydrochloride) is a topoisomerase II inhibitor with potent antineoplastic activities. Daunorubicin Hydrochloride (Daunomycin Hydrochloride; RP 13057 Hydrochloride; Rubidomycin Hydrochloride) inhibites DNA and RNA synthesis in sensitive and resistant Ehrlich ascites tumor cells.

Daunorubicin HCl,23541-50-6,Daunomycin,Natural Products,Antibiotic, buy Daunorubicin HCl , Daunorubicin HCl supplier , purchase Daunorubicin HCl , Daunorubicin HCl cost , Daunorubicin HCl manufacturer , order Daunorubicin HCl , high purity Daunorubicin HCl