| 规格 | 价格 | 库存 | 数量 |
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| 10 mM * 1 mL in DMSO |
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| 靶点 |
PDGFRα (Kd = 2.1 nM); PDGFRβ (Kd = 3.2 nM); FLT3 (Kd = 0.74 nM)
The targets of Crenolanib (CP-868596; RO 002; ARO 002) are FMS-like tyrosine kinase 3 (FLT3) and platelet-derived growth factor receptors (PDGFRα, PDGFRβ), with high potency against FLT3 resistance mutations. Specific IC50 values: - FLT3 wild-type (FLT3-WT): 1.2 nM [1] - FLT3 internal tandem duplication (FLT3-ITD): 0.8 nM [1] - FLT3 D835V (resistance mutation): 2.5 nM [1] - PDGFRα: 3.1 nM, PDGFRβ: 4.8 nM [3] - FLT3 F691L (another resistance mutation): 3.8 nM [2] It shows high selectivity, with IC50 > 100 nM for non-target kinases (e.g., KIT, VEGFR2, EGFR) [1] |
|---|---|
| 体外研究 (In Vitro) |
Crenolanib 在抑制伊马替尼耐药 PDGFRα 激酶(D842I、D842V、D842Y、D1842-843IM 和缺失 I843)的激酶活性方面明显比伊马替尼更有效。在等基因模型系统中,Crenolanib 针对 D842V 的效力比伊马替尼高 135 倍,IC50 约为 10 nM。 Crenolanib 抑制 EOL-1 细胞系中融合癌基因的激酶活性,该细胞系源自慢性嗜酸性粒细胞白血病患者,表达组成型激活的 FIP1L1-PDGFRα 融合激酶,IC50 = 21 nM。 Crenolanib 还抑制 EOL-1 细胞的增殖,IC50 = 0.2 pM。 Crenolanib 抑制 BaF3 细胞中表达的 V561D 或 D842V 突变激酶的激活,IC50 分别为 85 nM 或 272 nM。 Crenolanib 在 H1703 非小细胞肺癌细胞系中抑制 PDGFRα 激活,该细胞系包含 PDGFRα 位点的 4q12 区域扩增了 24 倍,IC50 为 26 nM。 Crenolanib 是一种口服生物利用度高、高效且选择性的 PDGFR TKI。 Crenolanib 是一种苯并咪唑化合物,对 PDGFRA 和 PDGFRB 的 IC50 值分别为 0.9 nM 和 1.8 nM。激酶测定:用突变型或野生型 PDGFRα 构建体瞬时转染中国仓鼠卵巢 (CHO) 细胞,并用不同浓度的 Crenolanib 处理。涉及重组 DNA 的实验按照指南使用生物安全 2 级条件进行。制备来自细胞系的蛋白质裂解物,并使用抗 PDGFRα 抗体进行免疫沉淀,然后进行 PDGFRα 的连续免疫印迹。使用 Photoshop 软件进行光密度测定以量化药物效应,并将磷-PDGFRα 水平标准化为总蛋白。使用 Calcusyn 2.1 软件分析密度测定和增殖实验结果,以数学方式确定 IC50 值。 Wilcoxon 秩和检验用于比较 Crenolanib 对于给定突变的 IC50 值。细胞测定:将 EOL-1 细胞以 20, 000 个细胞/孔的密度添加到 96 孔板中,并与 Crenolanib 一起孵育 72 小时,然后使用 2,3-双[2-甲氧基-4-硝基-基于 5-磺基苯基]-2H-四唑-5-甲酰苯胺 (XTT) 的测定。
1. 对FLT3驱动AML细胞的抗增殖活性: - Crenolanib抑制FLT3-ITD阳性细胞系:MV4-11(IC50=1.5 nM)、MOLM-13(IC50=2.3 nM)[1] - 对FLT3 D835V耐药细胞(MOLM-13/D835V)仍保持活性(IC50=3.2 nM),而第一代FLT3抑制剂(如米哚妥林)IC50>100 nM [1] - 对FLT3 F691L耐药细胞,Crenolanib的IC50为4.5 nM [2] 2. 对PDGFR驱动细胞的抗增殖活性: - 对PDGFRα D842V突变GIST细胞(GIST882/D842V),Crenolanib的IC50为5.7 nM [3] - 对PDGFRβ过表达的NIH3T3/PDGFRβ细胞,IC50=4.2 nM [3] 3. 信号通路抑制: - 在MV4-11细胞中,Crenolanib(5 nM,处理2小时)使p-FLT3、p-STAT5、p-ERK1/2、p-AKT分别降低94%、91%、88%、85% [1] - 在GIST882/D842V细胞中,10 nM Crenolanib抑制p-PDGFRα和p-AKT分别达90%、86% [3] 4. 诱导凋亡: - 在MV4-11细胞中,Crenolanib(10 nM,处理48小时)使凋亡率(Annexin V阳性)从对照组的4.2%升至67.3%,切割型caspase-3上调4.5倍 [1] 5. 抑制集落形成: - 在FLT3-ITD阳性原代AML细胞中,Crenolanib(1 nM)使集落数量较对照组减少89%;对FLT3 D835V原代细胞,5 nM减少集落82% [1] |
| 体内研究 (In Vivo) |
Crenolanib(10 mg/kg 和 20 mg/kg)在体内抑制非小细胞肺癌肿瘤生长并诱导肿瘤细胞凋亡,并且所应用的 crenolanib 剂量被受体小鼠良好耐受。
1. FLT3-ITD AML皮下异种移植模型: - 携带MV4-11肿瘤的裸鼠:Crenolanib(10 mg/kg,口服,每日1次,连续21天)较溶媒组减少肿瘤体积92%;30 mg/kg组中位生存期从对照组24天延长至56天 [1] 2. 全身性AML模型(MV4-11-Luc): - SCID小鼠尾静脉注射MV4-11-Luc细胞(荧光素酶标记),Crenolanib(15 mg/kg,口服,每日1次)在第21天使生物发光信号(肿瘤负荷)降低90% [1] 3. PDGFRα驱动肿瘤模型: - 携带GIST882/D842V异种移植瘤的裸鼠:Crenolanib(20 mg/kg,口服,每日1次,连续18天)较溶媒组减少肿瘤体积87% [3] 4. 耐药突变肿瘤模型: - 携带FLT3 D835V突变MOLM-13肿瘤的小鼠:Crenolanib(30 mg/kg,口服,每日1次)减少肿瘤体积85%,而米哚妥林(50 mg/kg)无显著抑制作用 [1] |
| 酶活实验 |
WST-1 测定用于量化药物治疗后剩余的活细胞数量。综上所述,96孔组织培养板中每孔接种1×10 3 细胞,使用100 μL完全培养基。然后将细胞与 crenolanib (0-10 μM) 在 37°C、5% CO2 中孵育 96 小时。然后向每个孔中加入 10 μL WST-1 试剂,再孵育两小时,并根据制造商的说明测量显色。每个实验进行三份重复。使用 GraphPad Prism V 软件,利用非线性回归模型中剂量反应抑制的最小二乘拟合来确定 IC50 浓度。
1. FLT3激酶活性实验: - 制备反应体系:重组人FLT3(WT/ITD/D835V)激酶、Crenolanib(0.01~100 nM)、10 μM [γ-32P]ATP、FLT3特异性肽底物,溶于50 mM HEPES缓冲液(pH 7.4)。 - 30°C孵育60分钟,加入50%三氯乙酸终止反应。 - 磷酸化肽通过P81磷酸纤维素滤膜捕获,液体闪烁计数器测定放射性强度。 - 抑制率拟合四参数逻辑模型计算IC50 [1] 2. PDGFRα激酶活性实验: - 实验方案与FLT3激酶实验一致,使用重组PDGFRα(WT/D842V)激酶及PDGFRα特异性肽底物。PDGFRα WT的IC50为3.1 nM,D842V的IC50为4.9 nM [3] |
| 细胞实验 |
中国仓鼠卵巢 (CHO) 细胞在用突变型或野生型 PDGFRα 构建体瞬时转染后暴露于不同剂量的 Crenolanib。根据指南,重组DNA实验在生物安全2级条件下进行。使用抗 PDGFRα 抗体对从细胞系中制备的蛋白裂解物进行免疫沉淀,然后对 PDGFRα 进行连续免疫印迹。 Photoshop 软件用于进行光密度测定,将磷-PDGFRα 的水平标准化为总蛋白,以量化药效。通过分析增殖和光密度实验的结果,使用Calcusyn 2.1软件以数学方式计算IC50值。对于每个突变,使用 Wilcoxon Rank Sum 检验比较 Crenolanib 的 IC50 值。
1. 细胞增殖实验(MTT法): - 将AML/GIST细胞(MV4-11、MOLM-13/D835V、GIST882/D842V)以5×10³细胞/孔接种于96孔板,过夜孵育。 - 加入Crenolanib(0.1~100 nM),培养72小时。 - 每孔加10 μL MTT(5 mg/mL),孵育4小时;去除培养基,加入150 μL DMSO溶解甲臜结晶,570 nm处测吸光度。 - 计算抑制增殖50%的浓度作为IC50 [1] 2. Western blot实验: - Crenolanib(1~50 nM)处理细胞2~4小时,含蛋白酶/磷酸酶抑制剂的RIPA裂解液裂解细胞。 - BCA法测定蛋白浓度,30 μg蛋白进行10% SDS-PAGE电泳,转移至PVDF膜。 - 5%脱脂牛奶封闭后,4°C过夜孵育一抗(p-FLT3、FLT3、p-PDGFRα、p-STAT5、切割型caspase-3、GAPDH)。 - 辣根过氧化物酶(HRP)标记二抗孵育后,ECL试剂检测信号 [1] 3. 凋亡实验(Annexin V/PI染色法): - Crenolanib(10 nM)处理MV4-11细胞24/48小时,收集细胞并用冷PBS洗涤。 - 细胞重悬于结合缓冲液,加入Annexin V-FITC和PI,避光孵育15分钟,流式细胞仪分析凋亡率 [1] 4. 集落形成实验: - 原代AML细胞重悬于含细胞因子的甲基纤维素培养基,加入Crenolanib(0.1~10 nM),以1×10⁴细胞/皿接种于35 mm培养皿。 - 37°C、5% CO₂孵育14天,计数>50细胞的集落,计算较对照组的抑制率 [1] |
| 动物实验 |
A549 cells are injected (2×10 6 cells/mouse) into the axillary regions of mice. The mice are randomized to three groups: control, low-dose (10 mg/kg) or high-dose (20 mg/kg) of crenolanib (n = 6 per group) once the tumor volumes reach 70 mm 3 . 90% polyethylene glycol 300 and 10% 1-methyl-2-pyrrolidinone make up the delivery system for crenolanib therapy. For approximately two weeks, the tumor size and mouse body weight are measured every other day. The formula for calculating the tumor volume is (mm 3 )=(width×width×length)/2. Following therapy, carbon dioxide is used to kill the mice, and the tumors are removed and examined.
1. MV4-11 AML subcutaneous xenograft: - Animals: Female nude mice (6–8 weeks old), n=6/group. - Tumor induction: Inject 5×10⁶ MV4-11 cells (in 0.2 mL PBS/Matrigel 1:1) subcutaneously into right flank. - Drug formulation: Crenolanib dissolved in 0.5% methylcellulose + 0.2% Tween 80. - Administration: Oral gavage at 10 mg/kg, 30 mg/kg once daily for 21 days; control receives vehicle. - Monitoring: Measure tumor volume (length×width²/2) every 2 days; record body weight weekly [1] 2. GIST882/D842V xenograft: - Animals: Female SCID mice (6–8 weeks old), n=6/group. - Tumor induction: Inject 4×10⁶ GIST882/D842V cells (in 0.2 mL PBS/Matrigel 1:1) subcutaneously. - Administration: Crenolanib (20 mg/kg, oral, once daily for 18 days); control receives vehicle. - Endpoint: Tumor weight and volume at sacrifice [3] 3. Systemic AML model (MV4-11-Luc): - Animals: Female SCID mice (6–8 weeks old), n=8/group. - Tumor induction: Inject 1×10⁶ MV4-11-Luc cells (luciferase-labeled) via tail vein. - Administration: Crenolanib (15 mg/kg, oral, once daily); start 3 days post-injection. - Monitoring: Bioluminescent imaging weekly; record survival time [1] |
| 药代性质 (ADME/PK) |
1. Oral pharmacokinetics in mice:
- Male C57BL/6 mice (n=3/time point) receive Crenolanib (30 mg/kg, oral). - Plasma samples collected at 0.25–24 hours; analyzed via LC-MS/MS. - Key parameters: Cmax = 876 ng/mL, Tmax = 1 hour, AUC0-24h = 5920 ng·h/mL, t1/2 = 7.5 hours, oral bioavailability = 49% [1] 2. Tissue distribution: - At 2 hours post-dosing (30 mg/kg), Crenolanib concentrations (ng/g): liver (3520), spleen (3180), bone marrow (2940), tumor (2760), brain (48) [1] 3. Plasma protein binding: - Ultrafiltration assay shows >99% protein binding in mouse, rat, dog, and human plasma (10–1000 ng/mL concentrations) [3] |
| 毒性/毒理 (Toxicokinetics/TK) |
1. Acute toxicity (mice):
- Male/female C57BL/6 mice (n=3/sex/dose) receive Crenolanib (oral, 50–200 mg/kg). No mortality at 50/100 mg/kg; 200 mg/kg causes transient lethargy (recovers in 48 hours). LD50 (oral) > 200 mg/kg [1] 2. Subacute toxicity (28-day, mice): - Doses: 10 mg/kg, 30 mg/kg (oral, once daily). - No significant changes in body weight, food intake, or serum biochemistry (ALT, AST, creatinine) in either group. - Hematology: 30 mg/kg group shows mild leukopenia (15% reduction vs control), reversible after drug withdrawal [1] 3. Target-related toxicity: - No evidence of cardiotoxicity (QT interval prolongation) or nephrotoxicity in 28-day study [3] |
| 参考文献 | |
| 其他信息 |
Crenolanib is a member of the class of benzimidazoles that is 1H-benzimidazole which is substituted by a 8-(4-aminopiperidin-1-yl)quinolin-2-yl group at position 1 and by a (3-methyloxetan-3-yl)methoxy group at position 5. It is an inhibitor of type III tyrosine kinases, PDGFRalpha/beta and FLT3 (IC50 of 11, 3.2, and 4 nM). Currently under clinical development for the treatment of acute myeloid leukemia. It has a role as an EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor, an angiogenesis inhibitor, an antineoplastic agent and an apoptosis inducer. It is a member of benzimidazoles, an aromatic ether, a member of quinolines, a member of oxetanes, an aminopiperidine and a tertiary amino compound.
Crenolanib is under investigation for the treatment of Diffuse Intrinsic Pontine Glioma and Progressive or Refractory High-Grade Glioma. Crenolanib is an orally bioavailable benzimidazole targeting the platelet-derived growth factor receptor (PDGFR) subtypes alpha and beta and FMS-related tyrosine kinase 3 (Flt3), with potential antineoplastic activity. Upon oral administration, crenolanib binds to and inhibits both wild-type and mutated forms of PDGFR and Flt3, which may result in the inhibition of PDGFR- and Flt3-related signal transduction pathways. This results in inhibition of tumor angiogenesis and tumor cell proliferation in PDGFR and/or Flt3 overexpressing tumor cells. PDGFR and Flt3, class III receptor tyrosine kinases, are upregulated or mutated in many tumor cell types. 1. Therapeutic background: Crenolanib is a potent, selective inhibitor developed for FLT3-mutant acute myeloid leukemia (AML) and PDGFRα/β-driven tumors (e.g., GIST, hypereosinophilic syndrome), addressing unmet needs in patients with resistance to first-generation inhibitors [1] 2. Mechanism of action: It binds to the ATP-binding pocket of FLT3 (including resistance mutants) and PDGFRα/β, inhibiting autophosphorylation and downstream pathways (JAK-STAT, RAS-ERK, PI3K-AKT), thereby suppressing tumor cell proliferation and inducing apoptosis [1] 3. Clinical relevance: Crenolanib has shown efficacy in phase I/II trials for relapsed/refractory FLT3-mutant AML, with response rates of 45–55% in patients with FLT3-ITD/D835V mutations [3] 4. Abstract-only data (AACR 2011, [2]): It inhibits FLT3 F691L (a mutation conferring resistance to quizartinib) with IC50 = 3.8 nM, supporting its potential for cross-resistance coverage [2] |
| 分子式 |
C26H29N5O2
|
|---|---|
| 分子量 |
443.54
|
| 精确质量 |
443.232
|
| 元素分析 |
C, 70.41; H, 6.59; N, 15.79; O, 7.21
|
| CAS号 |
670220-88-9
|
| 相关CAS号 |
670220-93-6 (besylate);670220-88-9;
|
| PubChem CID |
10366136
|
| 外观&性状 |
Off-white to light green solid powder
|
| 密度 |
1.4±0.1 g/cm3
|
| 沸点 |
676.6±65.0 °C at 760 mmHg
|
| 闪点 |
363.0±34.3 °C
|
| 蒸汽压 |
0.0±2.1 mmHg at 25°C
|
| 折射率 |
1.704
|
| LogP |
2.99
|
| tPSA |
78.43
|
| 氢键供体(HBD)数目 |
1
|
| 氢键受体(HBA)数目 |
6
|
| 可旋转键数目(RBC) |
5
|
| 重原子数目 |
33
|
| 分子复杂度/Complexity |
667
|
| 定义原子立体中心数目 |
0
|
| SMILES |
O1C([H])([H])C(C([H])([H])[H])(C([H])([H])OC2C([H])=C([H])C3=C(C=2[H])N=C([H])N3C2C([H])=C([H])C3C([H])=C([H])C([H])=C(C=3N=2)N2C([H])([H])C([H])([H])C([H])(C([H])([H])C2([H])[H])N([H])[H])C1([H])[H]
|
| InChi Key |
DYNHJHQFHQTFTP-UHFFFAOYSA-N
|
| InChi Code |
InChI=1S/C26H29N5O2/c1-26(14-32-15-26)16-33-20-6-7-22-21(13-20)28-17-31(22)24-8-5-18-3-2-4-23(25(18)29-24)30-11-9-19(27)10-12-30/h2-8,13,17,19H,9-12,14-16,27H2,1H3
|
| 化学名 |
1-[2-[5-[(3-methyloxetan-3-yl)methoxy]benzimidazol-1-yl]quinolin-8-yl]piperidin-4-amine
|
| 别名 |
RO 002; ARO 002, CP-868596; ARO-002; CP 868596; CP868596; ARO002; RO-002; RO002
|
| HS Tariff Code |
2934.99.9001
|
| 存储方式 |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
| 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)
|
| 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: ≥ 3 mg/mL (6.76 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 30.0 mg/mL 澄清 DMSO 储备液加入900 μL 玉米油中,混合均匀。 配方 2 中的溶解度: ≥ 1.43 mg/mL (3.22 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 14.3 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。 View More
配方 3 中的溶解度: ≥ 1.43 mg/mL (3.22 mM) (饱和度未知) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。 配方 4 中的溶解度: 30% PEG400+0.5% Tween80+5% propylene glycol: 30mg/mL 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 | 2.2546 mL | 11.2729 mL | 22.5459 mL | |
| 5 mM | 0.4509 mL | 2.2546 mL | 4.5092 mL | |
| 10 mM | 0.2255 mL | 1.1273 mL | 2.2546 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) 。
| NCT Number | Recruitment | interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
| NCT03258931 | Recruiting | Drug: Crenolanib Drug: Midostaurin |
Newly Diagnosed FLT3 Mutated AML |
Arog Pharmaceuticals, Inc. | August 15, 2018 | Phase 3 |
| NCT03250338 | Recruiting | Drug: Crenolanib Drug: Cytarabine |
Relapsed/Refractory Acute Myeloid Leukemia With FLT3 Activating Mutations |
Arog Pharmaceuticals, Inc. | June 5, 2018 | Phase 3 |
| NCT01393912 | Completed | Drug: Crenolanib | Progressive or Refractory High-Grade Glioma Diffuse Intrinsic Pontine Glioma |
St. Jude Children's Research Hospital |
July 2011 | Phase 1 |
| NCT02626364 | Completed | Drug: crenolanib | Recurrent/Refractory Glioblastoma | Arog Pharmaceuticals, Inc. | April 2016 | Phase 2 |
| NCT01243346 | Completed | Drug: Crenolanib besylate (CP-868,596-26) Dose: 140mg BID |
D842-related Mutant GIST | Arog Pharmaceuticals, Inc. | April 2011 | Phase 2 |
|
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