FLT3 1 nM (IC50) c-Kit 2 nM (IC50) FGFR1 8 nM (IC50) FGFR3 9 nM (IC50) VEGFR1 1 nM (IC50) VEGFR3 8 nM (IC50) VEGFR2 13 nM (IC50) PDGFRα 27 nM (IC50) PDGFRβ 210 nM (IC50)

在 IC50 值为 25 nM 时，dovitinib 可有效抑制 FGF 刺激的表达 F384L-FGFR3 的 B9 细胞以及 WT 细胞的增殖。即使浓度高达 1 μM，B9-MINV 细胞也表现出对多韦替尼抑制作用的抗性。 Dovitinib 已被证明可以减少 KMS11 (FGFR3-Y373C)、OPM2 (FGFR3-K650E) 和 KMS18 (FGFR3-G384D) 细胞的生长。对于 KMS11 和 OPM2，这意味着 IC50 分别为 90 nM 和 550 nM[1]。当多韦替尼给予 SK-HEP1 细胞时，会导致 G2/M 细胞周期停滞，抑制软琼脂中的集落形成，并阻止 bFGF 诱导的细胞迁移。 Dovitinib 在基础表达水平上磷酸化 FGFR-1、FRS2-α 和 ERK1/2，并响应 FGF[2]。

在携带 KMS11 的小鼠模型中，多韦替尼（10 mg/kg、30 mg/kg、60 mg/kg，口服）表现出很强的抗肿瘤作用。与接受安慰剂的小鼠相比，10 mg/kg、30 mg/kg 和 60 mg/kg 治疗组的生长抑制分别为 48%、78.5% 和 94%[1]。在 HCC 异种移植模型中，多韦替尼表现出强大的抗癌和抗转移作用。六种 HCC 系表现出多韦替尼对肿瘤发展的有效抑制作用。 FGFR/PDGFR-β/VEGFR-2信号通路的失活与血管生成发育的抑制相关。此外，多韦替尼还导致p-组蛋白H2A-X和p27上调，视网膜母细胞瘤去磷酸化，p-cdk-2和细胞周期蛋白B1下调，细胞增殖减少并诱导肿瘤细胞凋亡。 2]。

在时间分辨荧光 (TRF) 或放射性形式中，计算多韦替尼抑制 RTK 的 50% 抑制浓度 (IC50) 值，测量多韦替尼引起的相应酶对磷酸盐转移至底物的抑制。 FGFR3、FGFR1、PDGFRβ 和 VEGFR1-3 激酶结构域的测定条件为 50 mM HEPES（N-2-羟乙基哌嗪-N'-2-乙磺酸）、pH 7.0、2 mM MgCl2、10 mM MnCl2、1 mM NaF、1 mM 二硫苏糖醇 (DTT)、1 mg/mL 牛血清白蛋白 (BSA)、0.25 μM 生物素化肽底物 (GGGGQDGKDYIVLPI) 和 1 至 30 μM 三磷酸腺苷 (ATP)，具体取决于每种酶对应的 Km 。 ATP 的浓度等于或略低于 Km。对于 c-KIT 和 FLT3 反应，pH 值增加至 7.5，并添加 0.2 至 8 μM ATP 以及 0.25 至 1 μM 生物素化肽底物 (GGLFDDPSYVNVQNL)。反应在室温下孵育一到四小时后，磷酸化肽被捕获在含有终止反应缓冲液（25 mM EDTA [乙二胺四乙酸]，50 mM HEPES，pH 7.5）的链霉亲和素包被的微量滴定板上。 DELFIA TRF 系统使用铕标记的抗磷酸酪氨酸抗体 (PT66) 测量磷酸化肽。使用XL-Fit数据分析软件4.1版(IDBS)，使用非线性回归计算多维替尼的IC50浓度。当 ATP 浓度接近 ATP Km 时，胰岛素受体 (InsR)、PDGFRα、集落刺激因子 1 受体 (CSF-1R) 和胰岛素样生长因子受体 1 (IGFR1) 的激酶活性受到抑制。[1]

3-(4,5-二甲基噻唑)-2,5-二苯基四唑(MTT)染料吸光度代表细胞活力。每孔 5 × 103（B9 细胞）或 2 × 104（MM 细胞系）细胞的密度用于在 96 孔板中接种细胞。为了培养细胞，根据需要添加不同浓度的 Dovitinib 以及 30 ng/mL aFGF、100 μg/mL 肝素或 1% IL-6。对于每个浓度的多韦替尼，添加在培养基中稀释的 10 μL 药物或 DMSO 等分试样。药物组合研究涉及将细胞与 100 nM Dovitinib 或 0.5 μM 地塞米松一起孵育，或在必要时同时与两者一起孵育。为了评估Dovitinib对粘附于BMSC的MM细胞生长的影响，在存在或不存在Dovitinib的情况下在涂有BMSC的96孔板上培养104个KMS11细胞。板的孵育时间为 48-96 小时。按顺序将 5 × 103 M-NFS-60 细胞/孔与含有 10 ng/mL M-CSF 且不含粒细胞巨噬细胞集落刺激因子 (GM-CSF) 的 Dovitinib 连续稀释液一起培养评估 M-CSF 介导的巨噬细胞集落生长的生长。使用 Cell Titer-Glo Assay，72 小时后评估细胞活力。每个实验条件都运行三次。

Xenograft mouse model[1]
The xenograft mouse model was prepared as previously described. Briefly, 6- to 8-week-old female BNX mice obtained from Frederick Cancer Research and Development Centre were inoculated subcutaneously into the right flank with 3 × 107 KMS11 cells in 150 μL IMDM, together with 150 μL Matrigel basement membrane matrix . Treatment was initiated when tumors reached volumes of 200 mm3 at which time mice were randomized to receive 10, 30, or 60 mg/kg Dovitinib (CHIR-258) or 5 mM citrate buffer. Dosing was performed daily for 21 days by gavage. Eight to 10 mice were included in each treatment group. Caliper measurements were performed twice weekly to estimate tumor volume, using the formula: 4π/3 × (width/2)2 × (length/2). One-way analysis of variance was used to compare differences between vehicle- and CHIR-258-treated groups.

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21-0208 and SK-HEP1 cells as well as patient-derived HCC models were employed to study the antitumor effect of dovitinib. Changes of biomarkers relevant to FGFR/VEGFR/PDGFR pathways were determined by Western blotting. Microvessel density, apoptosis and cell proliferation were analyzed by immunohistochemistry.
Results: Treatment of SK-HEP1 cells with dovitinib resulted in G2/M cell cycle arrest, inhibition of colony formation in soft agar and blockade of bFGF-induced cell migration. Dovitinib inhibited basal expression and FGF-induced phosphorylation of FGFR-1, FRS2-α and ERK1/2. In vivo, dovitinib potently inhibited tumor growth of six HCC lines. Inhibition of angiogenesis correlated with inactivation of FGFR/PDGFR-β/VEGFR-2 signaling pathways. Dovitinib also caused dephosphorylation of retinoblastoma, upregulation of p-histone H2A-X and p27, and downregulation of p-cdk-2 and cyclin B1, which resulted in a reduction in cellular proliferation and the induction of tumor cell apoptosis. In an orthotopic model, dovitinib potently inhibited primary tumor growth and lung metastasis and significantly prolonged mouse survival.
Conclusions: Dovitinib demonstrated significant antitumor and antimetastatic activities in HCC xenograft models. This study provides a compelling rationale for clinical investigation in patients with advanced HCC.[2]

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The pharmacologic activity of Dovitinib (CHIR-258) was characterized by monitoring target modulation as well as by evaluating the antitumor and antiangiogenic effects in human colon xenograft models.
Results: CHIR-258 inhibits vascular endothelial growth factor receptor 1/2, fibroblast growth factor receptor 1/3, and platelet-derived growth factor receptor beta (PDGFRbeta) and shows both antitumor and antiangiogenic activities in vivo. Treatment of KM12L4a human colon cancer cells with CHIR-258 resulted in a dose-dependent inhibition of vascular endothelial growth factor receptor 1 and PDGFRbeta phosphorylation and reduction of phosphorylated extracellular signal-regulated kinase (ERK) levels, indicating modulation of target receptors and downstream signaling. In vivo administration of CHIR-258 resulted in significant tumor growth inhibition and tumor regressions, including large, established tumors (500-1,000 mm(3)). Immunohistochemical analysis showed a reduction of phosphorylated PDGFRbeta and phosphorylated ERK in tumor cells after oral dosing with CHIR-258 compared with control tumors. These changes were accompanied by decreased tumor cell proliferation rate and reduced intratumoral microvessel density. CHIR-258 inhibited the phosphorylation of PDGFRbeta and ERK phosphorylation in tumors within 2 hours following dosing and the inhibitory activity was sustained for >24 hours. Significant antitumor activity was observed with intermittent dosing schedules, indicating a sustained biological activity.
Conclusion: These studies provide evidence that biological activity of CHIR-258 in tumors correlates with efficacy and aids in the identification of potential biomarkers of this multitargeted receptor tyrosine kinase inhibitor. CHIR-258 exhibits properties that make it a promising candidate for clinical development in a variety of solid and hematologic malignancies.[3]

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Dissolved in 5 mM citrate buffer; 10, 30, or 60 mg/kg; p.o.

Female BNX mice bearing KMS11 cells

[1]. CHIR-258, a novel, multitargeted tyrosine kinase inhibitor for the potential treatment of t(4;14) multiple myeloma. Blood. 2005, 105(7), 2941-2948.

[2]. Dovitinib demonstrates antitumor and antimetastatic activities in xenograft models of hepatocellular carcinoma. J Hepatol. 2012, 56(3), 595-601.

Dovitinib Lactate is the orally bioavailable lactate salt of a benzimidazole-quinolinone compound with potential antineoplastic activity. Dovitinib strongly binds to fibroblast growth factor receptor 3 (FGFR3) and inhibits its phosphorylation, which may result in the inhibition of tumor cell proliferation and the induction of tumor cell death. In addition, this agent may inhibit other members of the RTK superfamily, including the vascular endothelial growth factor receptor; fibroblast growth factor receptor 1; platelet-derived growth factor receptor type 3; FMS-like tyrosine kinase 3; stem cell factor receptor (c-KIT); and colony-stimulating factor receptor 1; this may result in an additional reduction in cellular proliferation and angiogenesis, and the induction of tumor cell apoptosis. The activation of FGFR3 is associated with cell proliferation and survival in certain cancer cell types.

C24H27FN6O4

482.51

482.207

C, 59.74; H, 5.64; F, 3.94; N, 17.42; O, 13.26

692737-80-7

Dovitinib;405169-16-6;Dovitinib dilactic acid;852433-84-2;Dovitinib lactate hydrate;915769-50-5; 405169-16-6

135431668

White solid powder

2.58

151.57

5

9

3

35

737

0

ZRHDKBOBHHFLBW-UHFFFAOYSA-N

InChI=1S/C21H21FN6O.C3H6O3/c1-27-7-9-28(10-8-27)12-5-6-14-16(11-12)25-20(24-14)18-19(23)17-13(22)3-2-4-15(17)26-21(18)29;1-2(4)3(5)6/h2-6,11H,7-10H2,1H3,(H,24,25)(H3,23,26,29);2,4H,1H3,(H,5,6)

4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-quinolin-2-one;2-hydroxypropanoic acid

Dovitinib lactate; 692737-80-7; Dovitinib lactate anhydrous; Dovitinib (TKI258) Lactate; 4-Amino-5-fluoro-3-(6-(4-methylpiperazin-1-yl)-1H-benzo[d]imidazol-2-yl)quinolin-2(1H)-one 2-hydroxypropanoate; Dovitinib (lactate); UNII-B82T791274; 4-AMINO-5-FLUORO-3-(6-(4-METHYLPIPERAZIN-1-YL)-1H-BENZO-[D]IMIDAZOL-2-YL)QUINOLIN-2(1H)-ONE 2-HYDROXYPROPANOATE;

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

注意： 请将本产品存放在密封且受保护的环境中，避免吸湿/受潮。

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

DMSO: ≥ 30 mg/mL (62.17 mM)

注意: 如下所列的是一些常用的体内动物实验溶解配方，主要用于溶解难溶或不溶于水的产品（水溶度<1 mg/mL）。 建议您先取少量样品进行尝试，如该配方可行，再根据实验需求增加样品量。

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注射用配方1: DMSO : Tween 80： Saline = 10 : 5 : 85 (如： 100 μL DMSO → 50 μL Tween 80 → 850 μL Saline)
*生理盐水/Saline的制备：将0.9g氯化钠/NaCl溶解在100 mL ddH ₂ O中，得到澄清溶液。
注射用配方 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (如： 100 μL DMSO → 400 μL PEG300 → 50 μL Tween 80 → 450 μL Saline)
注射用配方 3: DMSO : Corn oil = 10 : 90 (如： 100 μL DMSO → 900 μL Corn oil)
示例: 以注射用配方 3 (DMSO : Corn oil = 10 : 90) 为例说明, 如果要配制 1 mL 2.5 mg/mL的工作液, 您可以取 100 μL 25 mg/mL 澄清的 DMSO 储备液，加到 900 μL Corn oil/玉米油中, 混合均匀。

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注射用配方 4: DMSO : 20% SBE-β-CD in Saline = 10 : 90 [如：100 μL DMSO → 900 μL (20% SBE-β-CD in Saline)]
*20% SBE-β-CD in Saline的制备（4°C，储存1周）：将2g SBE-β-CD (磺丁基-β-环糊精) 溶解于10mL生理盐水中，得到澄清溶液。
注射用配方 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (如： 500 μL 2-Hydroxypropyl-β-cyclodextrin (羟丙基环胡精)→ 500 μL Saline)
注射用配方 6: DMSO : PEG300 : Castor oil : Saline = 5 : 10 : 20 : 65 (如： 50 μL DMSO → 100 μL PEG300 → 200 μL Castor oil → 650 μL Saline)
注射用配方 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (如： 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline)
注射用配方 8: 溶解于Cremophor/Ethanol (50 : 50), 然后用生理盐水稀释。
注射用配方 9: EtOH : Corn oil = 10 : 90 (如： 100 μL EtOH → 900 μL Corn oil)
注射用配方 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (如： 100 μL EtOH → 400 μL PEG300 → 50 μL Tween 80 → 450 μL Saline)

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口服配方 1: 悬浮于0.5% CMC Na (羧甲基纤维素钠)
口服配方 2: 悬浮于0.5% Carboxymethyl cellulose (羧甲基纤维素)
示例: 以口服配方 1 (悬浮于 0.5% CMC Na)为例说明, 如果要配制 100 mL 2.5 mg/mL 的工作液, 您可以先取0.5g CMC Na并将其溶解于100mL ddH2O中，得到0.5%CMC-Na澄清溶液；然后将250 mg待测化合物加到100 mL前述 0.5%CMC Na溶液中，得到悬浮液。

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口服配方 3: 溶解于 PEG400 (聚乙二醇400)
口服配方 4: 悬浮于0.2% Carboxymethyl cellulose (羧甲基纤维素)
口服配方 5: 溶解于0.25% Tween 80 and 0.5% Carboxymethyl cellulose (羧甲基纤维素)
口服配方 6: 做成粉末与食物混合

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注意: 以上为较为常见方法，仅供参考， InvivoChem并未独立验证这些配方的准确性。具体溶剂的选择首先应参照文献已报道溶解方法、配方或剂型，对于某些尚未有文献报道溶解方法的化合物，需通过前期实验来确定（建议先取少量样品进行尝试），包括产品的溶解情况、梯度设置、动物的耐受性等。

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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;
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