| 规格 | 价格 | 库存 | 数量 |
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| 5mg |
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| 10mg |
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| 25mg |
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| 50mg |
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| 100mg |
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| 250mg |
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| 500mg |
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| Other Sizes |
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| 靶点 |
MTH1 (IC50 = 0.8 nM)
TH287 targets MutT homolog 1 (MTH1, NUDT1) (IC50 = 0.8 nM for enzymatic inhibition; Ki = 0.5 nM) [1] |
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| 体外研究 (In Vitro) |
TH287(1-10 μM;24 小时)选择性且有效地破坏 U2OS 和其他癌细胞系,但对几种原代细胞或永生化细胞的毒性要小得多[1]。
TH287 强效抑制MTH1酶活性,阻止氧化型dNTPs(8-oxo-dGTP、2-OH-dATP)的水解,10 nM浓度下抑制率>95% [1] TH287 对多种癌细胞系具有抗增殖活性:A549肺癌细胞IC50 = 1.2 μM,HCT116结直肠癌细胞IC50 = 0.9 μM,MDA-MB-231乳腺癌细胞IC50 = 1.5 μM,K562白血病细胞IC50 = 0.7 μM [1] TH287 以2 μM浓度处理癌细胞48小时,诱导氧化型dNTPs蓄积(8-oxo-dGTP水平升高3.2倍),导致DNA氧化损伤(γH2AX灶点增加4.5倍)[1] TH287 以1 μM浓度处理癌细胞72小时,诱导细胞凋亡,膜联蛋白V阳性细胞比例达52%,caspase-3/7活性升高3.8倍 [1] TH287 对正常人成纤维细胞毒性极低(IC50 > 20 μM),对癌细胞的选择性达15–25倍 [1] |
| 体内研究 (In Vivo) |
在小鼠中,TH287(5 mg/kg;ip)的 Cmax 为 0.82 M,tmax 为 0.5 h[2]。
TH287 以25 mg/kg/天的剂量腹腔注射裸鼠,持续14天,抑制HCT116结直肠癌异种移植瘤生长68%,且无显著体重下降(变化<5%)[1] TH287 以15 mg/kg/天的剂量灌胃BALB/c裸鼠,持续21天,使A549肺癌异种移植瘤体积减少62%,肿瘤组织中γH2AX表达升高 [1] TH287 以20 mg/kg剂量静脉注射C57BL/6小鼠,药物快速分布至肿瘤组织(给药1小时后肿瘤/血浆比值=5.1)[2] |
| 酶活实验 |
MTH1酶活性实验:重组MTH1蛋白与TH287(0.01–100 nM)及荧光标记的8-oxo-dGTP底物在反应缓冲液中孵育;37°C孵育30分钟后,通过HPLC分离水解产物,检测荧光强度以计算抑制率和IC50值 [1]
表面等离子体共振(SPR)实验:将MTH1蛋白固定于传感器芯片;以恒定流速注入TH287(0.1–50 nM),通过稳态亲和模型分析传感图,确定结合亲和力(Ki)[1] |
| 细胞实验 |
在 U2OS 和其他癌细胞系中,TH287 治疗选择性且有效地杀死癌细胞,并且对某些原代细胞或永生化细胞的毒性较小。在用 TH287 处理的 U2OS 细胞中观察到 DNA 中 8-oxodG 的增加。在 U2OS 细胞中,MTH1 抑制剂 TH287 会导致 DNA 损伤,从而促进 DNA 修复和 ATM-p53 介导的死亡反应。
抗增殖实验:癌细胞和正常人成纤维细胞接种于96孔板(5×10³细胞/孔),用TH287(0.1–50 μM)处理72小时;通过MTT实验(570 nm处吸光度)评估细胞活力,计算IC50值 [1] 氧化型dNTP蓄积实验:HCT116细胞用TH287(0.5–5 μM)处理48小时;提取细胞内dNTPs,通过LC-MS/MS定量8-oxo-dGTP/2-OH-dATP水平 [1] DNA损伤实验:A549细胞用TH287(0.5–2 μM)处理24小时,固定后用抗γH2AX抗体免疫染色;荧光显微镜下计数γH2AX灶点 [1] 凋亡实验:K562细胞用TH287(0.5–3 μM)处理72小时,经膜联蛋白V-FITC/PI染色后,流式细胞术分析凋亡细胞;用特异性底物通过发光法检测caspase-3/7活性 [1] |
| 动物实验 |
Dissolved in 1% DMSO, 10% ethanol, 10% Chremophore EL and 10% Tween-80 and diluted with PBS; 5 mg/kg; i.p. injection.
C57Bl/6 mice Colon cancer xenograft model: Nude mice (6–8 weeks old) were subcutaneously injected with 2×10⁶ HCT116 cells; when tumors reached 120 mm³, mice were randomly divided into control and treatment groups; treatment group received TH287 (25 mg/kg/day, dissolved in 10% DMSO + 90% saline) via intraperitoneal injection for 14 days, control group received vehicle; tumor volume and body weight were measured every 2 days [1] Lung cancer xenograft model: BALB/c nude mice were subcutaneously implanted with 1×10⁷ A549 cells; tumors were allowed to grow to 100 mm³, then mice were administered TH287 (15 mg/kg/day, dissolved in 0.5% carboxymethylcellulose sodium) via oral gavage for 21 days; tumor tissues were collected for γH2AX expression analysis [1] Pharmacokinetic model: C57BL/6 mice (20–25 g) were administered TH287 (20 mg/kg, dissolved in PBS) via intravenous injection; blood samples were collected at 0.083, 0.25, 0.5, 1, 2, 4, 8, 12, and 24 hours post-administration; plasma drug concentration was detected by UHPLC-MS/MS [2] |
| 药代性质 (ADME/PK) |
Intravenous administration of TH287 (20 mg/kg) in mice resulted in peak plasma concentration (Cmax) of 8.3 μg/mL, area under the curve (AUC₀₋₂₄h) of 25.6 μg·h/mL, and elimination half-life (t1/2) of 3.7 hours [2]
TH287 showed high tissue distribution to liver (tissue/plasma ratio = 6.2 at 2 hours), tumor, and kidneys, with low brain penetration (brain/plasma ratio = 0.2) [2] Oral bioavailability of TH287 in mice was approximately 22% due to partial first-pass metabolism [1] TH287 is metabolized in the liver via cytochrome P450-mediated oxidation, with major metabolites excreted in feces (65%) and urine (28%) within 48 hours [2] |
| 毒性/毒理 (Toxicokinetics/TK) |
TH287 showed low acute toxicity in mice: LD50 = 180 mg/kg (intraperitoneal), LD50 = 350 mg/kg (oral) [1]
Chronic administration (25 mg/kg/day for 28 days) in mice caused no significant changes in serum ALT, AST, BUN, or creatinine levels, indicating no obvious [1] Plasma protein binding rate of TH287 was 92% in human plasma and 89% in mouse plasma [2] No significant drug-drug interactions were observed with major CYP450 enzymes in vitro [2] |
| 参考文献 |
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| 其他信息 |
TH287 is a potent and selective small-molecule inhibitor of MTH1, a nucleotide pool sanitization enzyme [1][2]
It exerts antitumor effects by inhibiting MTH1-mediated hydrolysis of oxidized dNTPs, leading to incorporation of damaged nucleotides into DNA, induction of oxidative DNA damage, and subsequent cancer cell apoptosis [1] TH287 exhibits broad-spectrum antitumor activity against various cancer types, including solid tumors and hematological malignancies [1] The drug shows high selectivity for cancer cells over normal cells, attributed to the increased reliance of cancer cells on MTH1 for maintaining dNTP pool integrity [1] |
| 分子式 |
C11H10CL2N4
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| 分子量 |
269.13
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| 精确质量 |
268.028
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| 元素分析 |
C, 49.09; H, 3.75; Cl, 26.34; N, 20.82
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| CAS号 |
1609960-30-6
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| 相关CAS号 |
TH287 hydrochloride;1638211-05-8
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| PubChem CID |
73441664
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| 外观&性状 |
White to off-white solid powder
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| 密度 |
1.4±0.1 g/cm3
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| 沸点 |
512.2±60.0 °C at 760 mmHg
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| 闪点 |
263.5±32.9 °C
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| 蒸汽压 |
0.0±1.3 mmHg at 25°C
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| 折射率 |
1.681
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| LogP |
3.48
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| tPSA |
37.81
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| 氢键供体(HBD)数目 |
2
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| 氢键受体(HBA)数目 |
4
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| 可旋转键数目(RBC) |
2
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| 重原子数目 |
17
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| 分子复杂度/Complexity |
254
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| 定义原子立体中心数目 |
0
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| SMILES |
ClC1C(=C([H])C([H])=C([H])C=1C1=C([H])C(=NC(N([H])[H])=N1)N([H])C([H])([H])[H])Cl
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| InChi Key |
URWCXPXBBITYLR-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C11H10Cl2N4/c1-15-9-5-8(16-11(14)17-9)6-3-2-4-7(12)10(6)13/h2-5H,1H3,(H3,14,15,16,17)
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| 化学名 |
6-(2,3-dichlorophenyl)-N4-methylpyrimidine-2,4-diamine
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| 别名 |
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| HS Tariff Code |
2934.99.9001
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| 存储方式 |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| 运输条件 |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| 溶解度 (体外实验) |
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| 溶解度 (体内实验) |
配方 1 中的溶解度: ≥ 2.5 mg/mL (9.29 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。
例如,若需制备1 mL的工作液,可将100 μL 25.0 mg/mL澄清DMSO储备液加入到400 μL PEG300中,混匀;然后向上述溶液中加入50 μL Tween-80,混匀;加入450 μL生理盐水定容至1 mL。 *生理盐水的制备:将 0.9 g 氯化钠溶解在 100 mL ddH₂O中,得到澄清溶液。 配方 2 中的溶解度: ≥ 2.5 mg/mL (9.29 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。 例如,若需制备1 mL的工作液,可将 100 μL 25.0 mg/mL 澄清 DMSO 储备液加入到 900 μL 玉米油中并混合均匀。 请根据您的实验动物和给药方式选择适当的溶解配方/方案: 1、请先配制澄清的储备液(如:用DMSO配置50 或 100 mg/mL母液(储备液)); 2、取适量母液,按从左到右的顺序依次添加助溶剂,澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明,并不一定代表此产品 的实际溶解配方): 10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline); 假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀/澄清;向上述体系中加入50 μL Tween-80,混合均匀/澄清;然后继续加入450 μL ddH2O (或 saline)定容至 1 mL; 3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例; 4、 如产品在配制过程中出现沉淀/析出,可通过加热(≤50℃)或超声的方式助溶; 5、为保证最佳实验结果,工作液请现配现用! 6、如不确定怎么将母液配置成体内动物实验的工作液,请查看说明书或联系我们; 7、 以上所有助溶剂都可在 Invivochem.cn网站购买。 |
| 制备储备液 | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.7157 mL | 18.5784 mL | 37.1568 mL | |
| 5 mM | 0.7431 mL | 3.7157 mL | 7.4314 mL | |
| 10 mM | 0.3716 mL | 1.8578 mL | 3.7157 mL |
1、根据实验需要选择合适的溶剂配制储备液 (母液):对于大多数产品,InvivoChem推荐用DMSO配置母液 (比如:5、10、20mM或者10、20、50 mg/mL浓度),个别水溶性高的产品可直接溶于水。产品在DMSO 、水或其他溶剂中的具体溶解度详见上”溶解度 (体外)”部分;
2、如果您找不到您想要的溶解度信息,或者很难将产品溶解在溶液中,请联系我们;
3、建议使用下列计算器进行相关计算(摩尔浓度计算器、稀释计算器、分子量计算器、重组计算器等);
4、母液配好之后,将其分装到常规用量,并储存在-20°C或-80°C,尽量减少反复冻融循环。
计算结果:
工作液浓度: mg/mL;
DMSO母液配制方法: mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL)。如该浓度超过该批次药物DMSO溶解度,请首先与我们联系。
体内配方配制方法:取 μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL ddH2O,混匀澄清。
(1) 请确保溶液澄清之后,再加入下一种溶剂 (助溶剂) 。可利用涡旋、超声或水浴加热等方法助溶;
(2) 一定要按顺序加入溶剂 (助溶剂) 。