Lometrexol hydrate(Synonyms: DDATHF hydrate)

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Lometrexol hydrate (Synonyms: DDATHF hydrate) 纯度: ≥99.0%

Lometrexol hydrate (DDATHF hydrate) 是一种抗嘌呤类抗叶酸 (antifolate) 药，可抑制甘氨酰胺核糖核苷酸甲酰基转移酶 (GARFT) 的活性，但不会引起可检测水平的 DNA 链断裂。Lometrexol hydrate 可以进一步抑制嘌呤从头合成，导致异常的细胞增殖，凋亡 (apoptosis) 和细胞周期停滞。Lometrexol hydrate 具有抗癌活性。Lometrexol hydrate 还是一种有效的人丝氨酸羟甲基转移酶 1/2 (hSHMT1/2) 抑制剂。

Lometrexol hydrate(Synonyms: DDATHF hydrate)

Lometrexol hydrate Chemical Structure

CAS No. : 1435784-14-7

规格 价格 是否有货 数量
5 mg ￥8300 In-stock
10 mg ￥13950 询价
50 mg   询价  
100 mg   询价  

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生物活性

Lometrexol hydrate (DDATHF hydrate), an antipurine antifolate, can inhibit the activity of glycinamide ribonucleotide formyltransferase (GARFT) but do not induce detectable levels of DNA strand breaks. Lometrexol hydrate can further inhibit de novo purine synthesis, causing abnormal cell proliferation and apoptosis, even cell cycle arrest. Lometrexol hydrate has anticancer activity[1][2]. Lometrexol hydrate also is a potent human Serine hydroxymethyltransferase1/2 (hSHMT1/2) inhibitor[3].

IC50 & Target

GARFT[1]
体外研究
(In Vitro)

Lometrexol hydrate (DDATHF hydrate) binds tightly to GART, resulting in a rapid and prolonged depletion of intracellular purine ribonucleotides[2].
Lometrexol hydrate (1-30 μM; 2-10 hours) induces rapid and complete growth inhibition in L1210 cells[2].
Lometrexol hydrate (1 μM; 2-24 hours) induces cell cycle arrest in murine leukemia L1210 cells[2].
Lometrexol hydrate induces abnormal proliferation and apoptosis exist in neural tube defects (NTDs)[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Viability Assay[2]

Cell Line: Mouse leukemia L1210 cells
Concentration: 1, 30 μM
Incubation Time: 2, 4, 6, 8, 10 hours
Result: Induced rapid and complete growth inhibition.

Cell Cycle Analysis[2]

Cell Line: L1210 cells
Concentration: 1 μM
Incubation Time: 2, 4, 8, 12, 24 hours
Result: Caused a rapid loss of the G2/M phase population of cells and an early S phase accumulation of cells by 8 hours. By 24 h, the S phase population appeared to be slowly shifting to higher DNA content, and hence, from mid-to-late S phase.

体内研究
(In Vivo)

Lometrexol hydrate (DDATHF hydrate; i.p.; 15-60 mg/kg; on gestation day 7.5) increases the rate of embryonic resorption and growth retardation in a dose-dependent manner[1].
Lometrexol hydrate (i.p.; 40 mg/kg) maximally inhibits GARFT activity after at 6 hours and thereafter gradually increases with time but remains significantly lower than control even at 96 hours. Levels of ATP, GTP, dATP and dGTP of NTDs embryonic brain tissue decreases significantly at 6 h, and more significantly over time[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: C57BL/6 mice (7-8 week, 18-20 g)[1]
Dosage: 15, 30, 35, 40, 45 and 60 mg/kg
Administration: Intraperitoneal injection; on gestation day 7.5
Result: Increased the rate of embryonic resorption and growth retardation in a dose-dependent manner.

Clinical Trial

分子量

461.47

Formula

C21H27N5O7
CAS 号

1435784-14-7
中文名称

洛美曲索水合物
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
溶解性数据
In Vitro: 

DMSO : 40 mg/mL (86.68 mM; Need ultrasonic and warming)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.1670 mL 10.8349 mL 21.6699 mL
5 mM 0.4334 mL 2.1670 mL 4.3340 mL
10 mM 0.2167 mL 1.0835 mL 2.1670 mL

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。
参考文献

  • [1]. Xu L, et al. The effect of inhibiting glycinamide ribonucleotide formyl transferase on the development of neural tube in mice. Nutr Metab (Lond). 2016 Aug 23;13(1):56.

    [2]. Julie L Bronder, et al. Antifolates Targeting Purine Synthesis Allow Entry of Tumor Cells Into S Phase Regardless of p53 Function. Cancer Res. 2002 Sep 15;62(18):5236-41.

    [3]. Emma Scaletti, et al. Structural basis of inhibition of the human serine hydroxymethyltransferase SHMT2 by antifolate drugs. FEBS Lett. 2019 Jul;593(14):1863-1873.

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