Zebularine (NSC309132; 4-Deoxyuridine)

Alias: Zebularine;NSC-309132; NSC 309132; NSC309132; 4-Deoxyuridine; 4 Deoxyuridine
Cat No.:V0407 Purity: ≥98%
Zebularine (formerly 4-Deoxyuridine; NSC-309132) is a selective and potent inhibitor of DNA methylation/methyltransferase with anticancer activity.
Zebularine (NSC309132; 4-Deoxyuridine) Chemical Structure CAS No.: 3690-10-6
Product category: DNA Methyltransferase
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Zebularine (formerly 4-Deoxyuridine; NSC-309132) is a selective and potent inhibitor of DNA methylation/methyltransferase with anticancer activity. It inhibits DNA methylation by forming a covalent complex with DNA methyltransferases. zebularine is a stable cytidine analog that also inhibits cytidinedeaminase with a Ki of 2 μM in a cell-free assay.

Biological Activity I Assay Protocols (From Reference)
ln Vitro
ZebuLarine accomplishes its demethylating effect by stabilizing DNMT binding to DNA, inhibiting methylation and minimizing dissociation, so trapping the enzyme and preventing turnover even at other locations. zebuLarine improves the chemo- and radiosensitivity of tumor cells and possesses antimitotic and vasculostatic action [1]. ZebuLarine inhibits DNA methylation and reactivates genes previously silenced by methylation. ZebuLarine generates a myogenic phenotype in 10T1/2 cells, a feature unique to DNA methylation inhibitors. ZebuLarine reactivates the silenced p16 gene and demethylates its promoter region in T24 bladder cancer cells [2]. ZebuLarine administration suppressed cell proliferation in a dose- and time-dependent manner, with IC50s of ∼100 μM and 150 μM for MDA-MB-231 and MCF-7 cells, respectively, after 96 hours of exposure. At high dosages, zebuLarine promotes alterations in apoptotic proteins in a cell line-specific way, manifesting as changes in caspase-3, Bax, Bcl2, and PARP cleavage [3]. ZebuLarine is also a powerful competitive inhibitor of CR deaminase. The Ki of zebuLarine is 0.95 μM[4].
ln Vivo
ZebuLarine shown minimal cytotoxicity in animals harboring tumors. When mice were administered high dosages of zebularine orally or via intraperitoneal injection, their tumor volumes were much lower than those of control animals [2]. Zebularine also increased the length of time that L1210 leukemic mice receiving 5-AZA-CdR survived. Compared to mice treated with 5-AZA-CdR alone, about 27% of mice treated with this combination of drugs lived longer.
Animal Protocol
Dissolved in 0.45% saline; 500 mg/kg, 1000 mg/kg; i.p. and p.o.
Male BALB/c nu/nu mice
References
[1]. Champion C, et al. Mechanistic insights on the inhibition of c5 DNA methyltransferases by zebularine. PLoS One. 2010 Aug 24;5(8):e12388.
[2]. Cheng JC, et al. Inhibition of DNA methylation and reactivation of silenced genes by zebularine. J Natl Cancer Inst. 2003 Mar 5;95(5):399-409.
[3]. Billam M, et al. Effects of a novel DNA methyltransferase inhibitor zebularine on human breast cancer cells. Breast Cancer Res Treat. 2010 Apr;120(3):581-92.
[4]. Lemaire M, et al. Inhibition of cytidine deaminase by zebularine enhances the antineoplastic action of 5-aza-2'-deoxycytidine. Cancer Chemother Pharmacol. 2009 Feb;63(3):411-6
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C9H12N2O5
Molecular Weight
228.2
CAS #
3690-10-6
SMILES
O1[C@]([H])(C([H])([H])O[H])[C@]([H])([C@]([H])([C@]1([H])N1C(N=C([H])C([H])=C1[H])=O)O[H])O[H]
Synonyms
Zebularine;NSC-309132; NSC 309132; NSC309132; 4-Deoxyuridine; 4 Deoxyuridine
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: 46 mg/mL (201.6 mM)
Water:46 mg/mL (201.6 mM)
Ethanol:<1 mg/mL
Solubility (In Vivo)
Saline: 30mg/mL
 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 4.3821 mL 21.9106 mL 43.8212 mL
5 mM 0.8764 mL 4.3821 mL 8.7642 mL
10 mM 0.4382 mL 2.1911 mL 4.3821 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

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