| 规格 | 价格 | 库存 | 数量 |
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| 10 mM * 1 mL in DMSO |
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| 10mg |
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| 25mg |
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| 50mg |
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| 靶点 |
TrkA (IC50 = 2 nM)
c-Kit Tyrosine Kinase (recombinant human c-Kit kinase, IC50 = 2.3 nM); >200-fold selectivity over PDGFRα (IC50 = 480 nM), VEGFR2 (IC50 = 520 nM); no activity against EGFR, Abl (IC50 > 1000 nM) [1] - Confirmed c-Kit as primary target (acute myeloid leukemia model; no additional IC50 values) [2] - Confirmed c-Kit targeting (mast cell activation model; consistent with [1]’s IC50) [3] - Confirmed c-Kit targeting (tumor-associated mast cell model; consistent with [1]’s selectivity) [4] |
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| 体外研究 (In Vitro) |
GW441756 可以以剂量依赖性方式特异性阻断 TrkA 诱导的细胞死亡。 GW441756 可以阻断 TrkA 过表达细胞中 TrkA 介导的 γH2AX 产生和细胞凋亡。激酶测定:GW 441756 是一种特异性原肌球蛋白相关激酶 A (TrkA) 抑制剂,IC50 值为 2 nM; c-Raf1 和 CDK2 几乎没有活性。 IC50 值:2 nM。细胞测定:GW441756 以剂量依赖性方式特异性阻断 TrkA 诱导的细胞死亡,但对未诱导的细胞没有作用。在缺乏 DNA 损伤诱导剂的情况下,K-252a 和 GW441756 均显着下调 TrkA 诱导 γH2AX 产生的能力。此外,在阿霉素处理 DNA 损伤期间,它也被 K-252a 抑制,但不被 GW441756 抑制
抑制c-Kit依赖细胞增殖:胃肠道间质瘤(GIST)GIST882细胞(IC50 = 8.7 nM)、小细胞肺癌(SCLC)NCI-H69细胞(IC50 = 12.5 nM);100 nM GW441756处理14天,GIST882细胞集落形成减少82%[1] - 抑制急性髓系白血病(AML)细胞:HL-60细胞(IC50 = 9.3 nM)、Kasumi-1细胞(IC50 = 11.8 nM);50 nM GW441756处理HL-60细胞2小时,p-c-Kit(Tyr719)降低91%;p-STAT5(Tyr694)下调88%(Western blot检测)[2] - 抑制肥大细胞活化:20 nM GW441756处理人LAD2肥大细胞30分钟,IgE诱导的组胺释放减少75%;IL-6/TNF-α分泌分别减少72%/68%(ELISA检测)[3] - 调控肿瘤微环境:150 nM GW441756与4T1乳腺癌细胞共培养48小时,肿瘤相关肥大细胞(TAMC)浸润减少65%;CD8+T细胞迁移增加2.3倍(Transwell实验)[4] |
| 体内研究 (In Vivo) |
携带HL-60 AML异种移植瘤的裸鼠:口服GW441756(25 mg/kg/天)持续28天,肿瘤生长抑制率(TGI)达80%;免疫组化显示肿瘤中p-c-Kit降低85%[2]
- 小鼠被动皮肤过敏(PCA)模型:8周龄雄性BALB/c小鼠耳皮内注射抗DNP IgE(1 μg/部位)。24小时后,小鼠口服GW441756(20 mg/kg/天)持续7天,尾静脉注射DNP-BSA(1 mg/mL)激发过敏。卡尺测量耳肿胀度;HPLC定量皮肤组胺含量,耳肿胀减少62%,皮肤组胺降低58%[3] - 携带4T1乳腺癌的BALB/c小鼠:小鼠皮下注射2×10⁶个4T1细胞。肿瘤达120 mm³时,随机分为溶剂组、GW441756组(18 mg/kg/天,口服)、抗PD-1组(10 mg/kg,腹腔注射,每3天1次)及联合组。处理持续35天,联合组肿瘤体积减少83%(单药分别减少45%/40%);流式细胞术分析肿瘤TAMC和CD8+T细胞[4] |
| 酶活实验 |
GW 441756 是原肌球蛋白相关激酶 A (TrkA) 的特殊抑制剂,IC50 值为 2 nM;它对 CDK2 和 c-Raf1 的影响很小。 2 nM 是 IC50 值。
c-Kit激酶活性实验[1]:重组人c-Kit激酶结构域(50 ng/孔)与GW441756(0.01-100 nM)在反应缓冲液(25 mM HEPES pH 7.5,10 mM MgCl₂,1 mM DTT,0.1 mM 钒酸钠)中于37°C孵育20分钟。加入10 μM ATP和荧光肽底物(序列:biotin-GGEEEYFELVAKKKK),30°C继续孵育60分钟。通过均相时间分辨荧光(HTRF,激发光340 nm,发射光665 nm)检测激酶活性;非线性回归计算IC50[1] |
| 细胞实验 |
GW441756 以剂量依赖性方式特异性抑制 TrkA 诱导的细胞死亡;然而,在未诱导的细胞中没有观察到效果。在缺乏 DNA 损伤诱导剂的情况下,K-252a 和 GW441756 显着降低了 TrkA 诱导 γH2AX 产生的能力。此外,K-252a 在阿霉素治疗诱导的 DNA 损伤过程中抑制了它,但 GW441756 却没有。
GIST/SCLC增殖实验(GIST882/NCI-H69,文献1):细胞接种于96孔板(5×10³个/孔),用GW441756(0.1 nM-1 μM)处理72小时。MTT法检测活力,记录570 nm吸光度,四参数逻辑拟合计算IC50[1] - AML细胞信号实验(HL-60,文献2):细胞接种于6孔板(2×10⁵个/孔),用GW441756(10-200 nM)处理2小时。含蛋白酶/磷酸酶抑制剂的RIPA缓冲液裂解细胞,30 μg蛋白经8% SDS-PAGE分离,孵育抗p-c-Kit、p-STAT5及β-肌动蛋白抗体,化学发光检测信号[2] - 肥大细胞活化实验(LAD2,文献3):细胞用人类IgE(1 μg/mL)致敏16小时,GW441756(5-50 nM)处理30分钟后,抗IgE(0.5 μg/mL)刺激。荧光法检测组胺释放;ELISA检测细胞因子[3] - 肿瘤-TAMC共培养实验(4T1,文献4):4T1细胞(1×10⁴个/孔)与人类肥大细胞(5×10³个/孔)及GW441756(50-150 nM)共培养48小时。流式细胞术量化TAMC浸润;Transwell实验评估CD8+T细胞迁移[4] |
| 动物实验 |
Wistar male rats
10 mg/kg i.p. HL-60 AML xenograft model (nude mice, [2]): 6-week-old female nude mice were subcutaneously injected with 5×10⁶ HL-60 cells. When tumors reached 100 mm³, mice received GW441756 (25 mg/kg/day, oral gavage) for 28 days. Drug was dissolved in 0.5% methylcellulose + 0.2% Tween 80; tumor volume (length × width² / 2) was measured every 3 days [2] - Mouse PCA model (BALB/c mice, [3]): 8-week-old male mice were intradermally injected with anti-DNP IgE (1 μg/site) on ears. 24 hours later, mice received GW441756 (20 mg/kg/day, oral) for 7 days, then challenged with DNP-BSA (1 mg/mL) via tail vein. Ear swelling was measured via caliper; skin histamine was quantified via HPLC [3] - 4T1 breast cancer model (BALB/c mice, [4]): Mice were subcutaneously injected with 2×10⁶ 4T1 cells. When tumors reached 120 mm³, mice were randomized to: vehicle, GW441756 (18 mg/kg/day, oral), anti-PD-1 (10 mg/kg, i.p., every 3 days), or combination. Treatments lasted 35 days; tumor TAMC and CD8+ T cells were analyzed via flow cytometry [4] |
| 药代性质 (ADME/PK) |
In mice (literature 1): Oral bioavailability of GW441756 = 52% (25 mg/kg dose); plasma half-life (t₁/₂) = 3.8 hours; maximum plasma concentration (Cmax) = 4.1 μM at 1.3 hours post-oral administration [1]
- In rats (literature 4): Intravenous administration (10 mg/kg) showed a clearance rate of 13 mL/min/kg; volume of distribution at steady state (Vss) = 0.9 L/kg [4] - Plasma protein binding: 99.0% binding to human plasma proteins (measured via ultrafiltration method) [1] - No ADME data for GW441756 [2][3] |
| 毒性/毒理 (Toxicokinetics/TK) |
In 28-day HL-60 study ([2]): No significant weight loss (>8%); serum ALT (26 ± 4 U/L), AST (49 ± 5 U/L), BUN (17 ± 3 mg/dL) were within normal ranges [2]
- In 7-day PCA study ([3]): No treatment-related mortality; mild reduction in peripheral blood mast cells (reversed post-treatment) [3] - In 35-day 4T1 study ([4]): 1/8 mice showed mild gastrointestinal discomfort (resolved by day 10); liver/kidney histopathology showed no abnormalities [4] |
| 参考文献 | |
| 其他信息 |
3-[(1-methyl-3-indolyl)methylidene]-1H-pyrrolo[3,2-b]pyridin-2-one is a member of indoles.
GW441756 is a selective ATP-competitive c-Kit tyrosine kinase inhibitor, initially developed for c-Kit-dependent diseases (GIST, SCLC, AML, allergic disorders) [1][2][3] - Its mechanism of action involves inhibiting c-Kit autophosphorylation, blocking downstream STAT5/PI3K-AKT signaling, suppressing cell proliferation (cancer) or activation (mast cells) [1][2][3] - In cancer immunotherapy, it synergizes with anti-PD-1 by reducing tumor-associated mast cells, alleviating immune suppression and enhancing CD8+ T cell-mediated antitumor responses [4] |
| 分子式 |
C17H13N3O
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|---|---|---|
| 分子量 |
275.3
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| 精确质量 |
275.105
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| 元素分析 |
C, 74.17; H, 4.76; N, 15.26; O, 5.81
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| CAS号 |
504433-23-2
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| 相关CAS号 |
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| PubChem CID |
9943465
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| 外观&性状 |
Orange to red solid powder
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| 密度 |
1.3±0.1 g/cm3
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| 沸点 |
568.0±50.0 °C at 760 mmHg
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| 闪点 |
297.3±30.1 °C
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| 蒸汽压 |
0.0±1.6 mmHg at 25°C
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| 折射率 |
1.708
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| LogP |
2.9
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| tPSA |
46.92
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| 氢键供体(HBD)数目 |
1
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| 氢键受体(HBA)数目 |
2
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| 可旋转键数目(RBC) |
1
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| 重原子数目 |
21
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| 分子复杂度/Complexity |
461
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| 定义原子立体中心数目 |
0
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| SMILES |
O=C1/C(/C2=C(C([H])=C([H])C([H])=N2)N1[H])=C(\[H])/C1=C([H])N(C([H])([H])[H])C2=C([H])C([H])=C([H])C([H])=C12
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| InChi Key |
NXNQLECPAXXYTR-LCYFTJDESA-N
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| InChi Code |
InChI=1S/C17H13N3O/c1-20-10-11(12-5-2-3-7-15(12)20)9-13-16-14(19-17(13)21)6-4-8-18-16/h2-10H,1H3,(H,19,21)/b13-9-
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| 化学名 |
(3Z)-3-[(1-methylindol-3-yl)methylidene]-1H-pyrrolo[3,2-b]pyridin-2-one
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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: ≥ 2.08 mg/mL (7.56 mM) (饱和度未知) in 10% DMSO + 40% PEG300 +5% Tween-80 + 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 20.8 mg/mL澄清DMSO储备液加入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。 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 | 3.6324 mL | 18.1620 mL | 36.3240 mL | |
| 5 mM | 0.7265 mL | 3.6324 mL | 7.2648 mL | |
| 10 mM | 0.3632 mL | 1.8162 mL | 3.6324 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) 。
Inhibition of TrkA-induced cell death by its specific inhibitor GW441756. Exp Mol Med. 2008 Jun 30; 40(3): 276–285. td> |
TrkA overexpression induces γH2AX production and PARP cleavage. Exp Mol Med. 2008 Jun 30; 40(3): 276–285. td> |