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Pemetrexed

Catalog No.GC11610

An antifolate with anticancer activity

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Pemetrexed Chemical Structure

Cas No.: 150399-23-8

Taille Prix Stock Qté
100mg
38,00 $US
En stock
10mM (in 1mL Water)
37,00 $US
En stock
2g
288,00 $US
En stock
200mg
61,00 $US
En stock

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Sample solution is provided at 25 µL, 10mM.

Product Documents

Quality Control & SDS

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Protocol

Kinase experiment:

AICARFT inhibition assays are carried out at room temperature by monitoring the formation of [6S]-5,6,7,8-tetrahydrofolate from 10-formyl-[6R,S]-5,6,7,8-tetrahydrofolate at A298. All solutions are purged with N2 gas prior to use. The reaction solution contains 33 mM Tris-Cl, pH 7.4, 25 mM KCl, 5 mM 2-Mercaptoethanol, 0.05 mM AICA ribonucleotide, and 16 nM (2 milliunits/mL) of AICARFT. 10-Formyl-[6R,S]-5,6,7,8-tetrahydrofolate concentrations of 0.037, 0.074, and 0.145 mM are used (0.61, 1.23, and 2.45 times its Km value, respectively). LY231514 is tested as an inhibitor at 0.08-0.8 mM (four concentrations). When the tri- and pentaglutamates of LY231514 are used as inhibitors, the concentrations are 0.0005-0.009 mM (eight concentrations). Enzyme assays are initiated by the addition of enzyme. Data is analyzed using the ENZFITTER program for competitive inhibition.

Cell experiment:

Dose-response curves are generated to determine the concentration required for 50% inhibition of growth (IC50). Pemetrexed is dissolved initially in DMSO at a concentration of 4 mg/mL and further diluted with cell culture medium to the desired concentration. CCRF-CEM leukemia cells in complete medium are added to 24-well Cluster plates at a final concentration of 4.8×104 cells/well in a total volume of 2 mL. Test compounds at various concentrations are added to duplicate wells so that the final volume of DMSO is 0.5%. The plates are incubated for 72 h at 37°C in an atmosphere of 5% CO2 in air. At the end of the incubation, cell numbers are determined on a ZBI Coulter counter. Control wells usually contain 4×105 to 6×105 cells at the end of the incubation. For several studies, IC50s are determined for each compound in the presence of either 300 μM AICA, 5 μM thymidine, 100 μM hypoxanthine, or combination of 5 μM hymidine plus 100 μM hypoxanthine[1].

Animal experiment:

Mice[2] Female CBA mice and female NOD/SCID mice (NOD.CB17-Prkdcscid) at 6-8 wk of age are used. Premetrexed (100 mg/kg) is given i.p. from days 4-8 (5 consecutive d) to tumor-bearing mice to explore the synergistic effect when combined with anti-CD25 Ab or IgG control. The dose and schedule used for Pemetrexed in the current study is determined based on previous studies in mice.

References:

[1]. Shih C, et al. LY231514, a pyrrolo[2,3-d]pyrimidine-based antifolate that inhibits multiple folate-requiring enzymes. Cancer Res. 1997 Mar 15;57(6):1116-23.
[2]. Anraku M, et al. Synergistic antitumor effects of regulatory T cell blockade combined with pemetrexed in murine malignantmesothelioma. J Immunol. 2010 Jul 15;185(2):956-66.

Background

Pemetrexed (also known as pemetrexed disodium) is a novel antifolate antimetabolite targeting multiple enzymes involved in both pyrimidine and purine synthesis. Pemetrexed is an analog of the classic antifolate GARFYT inhibitor lometroxol with a similar chemical structure, where the pyrazine ring in the pterine portion of folic acid and the benzylic nitrogen in the bridge portion of folic acid are replaced by a pyrrole ring and a methylene group respectively. Pemetrexed potently inhibits TS, DHFR, and GARFT as well as AICARFT but with a lesser potency and exhibits autitumor activity in a broad range of tumors, including non-small cell lung carcinoma, malignant mesothelioma, and carcinomas of the breast, colorectum, uterine cervix, head and neck, and bladder.

Reference

[1].Luis Paz-Ares, Susana Bezares, Jose M. Tabernero, Daniel Castellanos, and Hernan Cortes-Funes. Review of a promising new agent-pemetrexed disodium. Cancer 2003; 97(8 Suppl):2056-2063

Chemical Properties

Cas No. 150399-23-8 SDF
Chemical Name disodium;(2S)-2-[[4-[2-(2-amino-4-oxo-1,7-dihydropyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]amino]pentanedioate
Canonical SMILES C1=CC(=CC=C1CCC2=CNC3=C2C(=O)N=C(N3)N)C(=O)NC(CCC(=O)[O-])C(=O)[O-].[Na+].[Na+]
Formula C20H19N5Na2O6 M.Wt 471.37
Solubility ≥ 30.67 mg/mL in Water Storage Store at -20°C
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table

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1 mg 5 mg 10 mg
1 mM 2.1215 mL 10.6074 mL 21.2148 mL
5 mM 0.4243 mL 2.1215 mL 4.243 mL
10 mM 0.2121 mL 1.0607 mL 2.1215 mL
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Average Rating: 5 ★★★★★ (Based on Reviews and 30 reference(s) in Google Scholar.)

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