Temozolomide(Synonyms: 替莫唑胺; NSC 362856; CCRG 81045; TMZ)

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Temozolomide (Synonyms: 替莫唑胺; NSC 362856; CCRG 81045; TMZ) 纯度: 99.98%

Temozolomide (NSC 362856) 是一种可透过血脑屏障的口服活性的 DNA 烷基化 (DNA alkylating) 剂。Temozolomide 也是一种促自噬 (autophagy) 和促凋亡剂 (apoptosis)。Temozolomide 对以低水平的 O6-烷基鸟嘌呤 DNA 烷基转移酶 (OGAT) 和功能失配修复系统为特征的肿瘤细胞有效。Temozolomide 具有抗肿瘤和抗血管生成作用。

Temozolomide(Synonyms: 替莫唑胺; NSC 362856;  CCRG 81045;  TMZ)

Temozolomide Chemical Structure

CAS No. : 85622-93-1

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生物活性

Temozolomide (NSC 362856) is an oral active DNA alkylating agent that crosses the blood-brain barrier. Temozolomide is also a proautophagic and proapoptotic agent. Temozolomide is effective against tumor cells that are characterized by low levels of O6-alkylguanine DNA alkyltransferase (OGAT) and a functional mismatch repair system. Temozolomide has antitumor and antiangiogenic effects[1][2].

IC50 & Target

DNA alkylator[1]

体外研究
(In Vitro)

Temozolomide (TZM) is a methylating agent that crosses the blood-brain barrier and is indicated for malignant gliomas and metastatic melanomas. Temozolomide is effective against tumor cells that are characterized by low levels of O6-alkylguanine DNA alkyltransferase (OGAT) and a functional mismatch repair system (MR)[1]. Determination of the IC50 for Temozolomide (TZM) in different cell lines gave values ranging from 14.1 to 234.6 μM that fell into two clearly differentiated groups: cell lines with low IC50 values (<50 μm), which include a172 (14.1±1.1 μm) and ln229 cells (14.5±1.1 those with high ic50 values (>100 μM), which include SF268 (147.2±2.1 μM) and SK-N-SH cells (234.6±2.3 μM)[3].

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.

体内研究
(In Vivo)

Temozolomide (TZM), as a single agent, does not significantly increase mdian survival time (MST) with respect to control. Noteworthy, intracranial injection of NU1025, immediately before the administration of 100 or 200 mg/kg Temozolomide, significantly increases lifespans with respect to controls or to groups treated with Temozolomide only. When Temozolomide is fractionated, the increase in lifespan (ILS) obtained with this schedule is higher than that observed when NU1025 is combined with a single injection of Temozolomide (statistical comparison of survival curves: NU1025 intracranially+Temozolomide 100 mg/kg×2 vs NU1025+Temozolomide 200 mg/kg; P=0.023)[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.

Clinical Trial

分子量

194.15

Formula

C6H6N6O2

CAS 号

85622-93-1

中文名称

替莫唑胺

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

-20°C, protect from light, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light, stored under nitrogen)

溶解性数据
In Vitro: 

DMSO : 20.83 mg/mL (107.29 mM; Need ultrasonic)

H2O : 2.86 mg/mL (14.73 mM; Need ultrasonic)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 5.1507 mL 25.7533 mL 51.5066 mL
5 mM 1.0301 mL 5.1507 mL 10.3013 mL
10 mM 0.5151 mL 2.5753 mL 5.1507 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 (protect from light, stored under nitrogen)。-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。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂: 10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 1.25 mg/mL (6.44 mM); Clear solution

    此方案可获得 ≥ 1.25 mg/mL (6.44 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 12.5 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。

    将 0.9 g 氯化钠,完全溶解于 100 mL ddH₂O 中,得到澄清透明的生理盐水溶液

  • 2.

    请依序添加每种溶剂: 10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 1.25 mg/mL (6.44 mM); Clear solution

    此方案可获得 ≥ 1.25 mg/mL (6.44 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 12.5 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。

    将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中,再用生理盐水定容至 10 mL,完全溶解,澄清透明
  • 3.

    请依序添加每种溶剂: 10% DMSO    90% corn oil

    Solubility: ≥ 1.25 mg/mL (6.44 mM); Clear solution

    此方案可获得 ≥ 1.25 mg/mL (6.44 mM,饱和度未知) 的澄清溶液,此方案不适用于实验周期在半个月以上的实验。

    以 1 mL 工作液为例,取 100 μL 12.5 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中,混合均匀。

*以上所有助溶剂都可在 上海金畔生物科技有限公司 网站选购。
参考文献
  • [1]. Tentori L, et al. Combined treatment with temozolomide and poly(ADP-ribose) polymerase inhibitor enhances survival of mice bearing hematologic malignancy at the central nervous system site. Blood. 2002 Mar 15;99(6):2241-4.

    [2]. Mathieu V, et al. Combining Anti-Human VEGF with temozolomide increases the antitumor efficacy of temozolomide in a human glioblastoma orthotopic xenograft model. Neoplasia. 2008 Dec;10(12):1383-92.

    [3]. Perazzoli G, et al. Temozolomide Resistance in Glioblastoma Cell Lines: Implication of MGMT, MMR, P-Glycoprotein and CD133 Expression. PLoS One. 2015 Oct 8;10(10):e0140131.

Cell Assay
[1]

The murine lymphoma cell line L5178Y of DBA/2 (H-2d/H-2d) origin is cultured in RPMI-1640 containing 10% fetal calf serum and antibiotics. Inhibition of PARP is obtained by treating cells (105 cells/mL) with 8-hydroxy-2-methylquinazolin-4[3H]-1 (NU1025), at a concentration (25 μM) that abrogates PARP activity. Cells are then exposed to Temozolomide (7.5-125 μM) and are cultured for 3 days. Cell growth is evaluated by counting viable cells in quadruplicate, and apoptosis is assessed by flow cytometry analysis of DNA content. Long-term survival is analyzed by colony-formation assay[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 Administration
[1]

Mice[1]
Male B6D2F1 (C57BL/6×DBA/2) mice are used. L5178Y cells (104 in 0.03 mL RPMI-1640) are then injected intracranially, through the center-middle area of the frontal bone to a 2-mm depth, using a 0.1-mL glass microsyringe and a 27-gauge disposable needle. To evaluate tumor cell growth, brains are fixed in 10% phosphate-buffered formaldehyde, and histologic sections (5 μm) are cut along the axial plane, stained with hematoxylin-eosin, and analyzed by light microscopy. Temozolomide is dissolved in DMSO (40 mg/mL), diluted in saline (5 mg/mL), and administered intraperitoneally on day 2 after tumor injection at 100 mg/kg or 200 mg/kg, doses commonly used for in vivo preclinical studies. Because cytotoxicity induced by Temozolomide and PARP inhibitors can be improved by fractionated modality of treatment, in selected groups a total dose of 200 mg/kg Temozolomide is divided in 2 doses of 100 mg/kg given on days 2 and 3.

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.

参考文献
  • [1]. Tentori L, et al. Combined treatment with temozolomide and poly(ADP-ribose) polymerase inhibitor enhances survival of mice bearing hematologic malignancy at the central nervous system site. Blood. 2002 Mar 15;99(6):2241-4.

    [2]. Mathieu V, et al. Combining Anti-Human VEGF with temozolomide increases the antitumor efficacy of temozolomide in a human glioblastoma orthotopic xenograft model. Neoplasia. 2008 Dec;10(12):1383-92.

    [3]. Perazzoli G, et al. Temozolomide Resistance in Glioblastoma Cell Lines: Implication of MGMT, MMR, P-Glycoprotein and CD133 Expression. PLoS One. 2015 Oct 8;10(10):e0140131.

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