| 规格 | 价格 | 库存 | 数量 |
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| 10 mM * 1 mL in DMSO |
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| 靶点 |
125I-CXCL8-CXCR2 ( IC50 = 0.97 nM ); Cynomolgus CXCR2 ( Kd = 0.08 nM ); Mouse CXCR2 ( Kd = 0.2 nM ); Rat CXCR2 ( Kd = 0.2 nM ); 125I-CXCL8-CXCR1 ( IC50 = 43 nM ); Cynomolgus CXCR1 ( Kd = 41 nM )
C-X-C chemokine receptor type 1 (CXCR1) (Ki = 0.8 nM for human CXCR1; IC₅₀ = 1.2 nM for inhibiting CXCL8 binding to human CXCR1); C-X-C chemokine receptor type 2 (CXCR2) (Ki = 1.7 nM for human CXCR2; IC₅₀ = 2.1 nM for inhibiting CXCL8 binding to human CXCR2); >1000-fold selectivity over CXCR3, CXCR4, CCR1, CCR2, CCR5, CCR7 (Ki > 1000 nM for all) [1] |
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| 体外研究 (In Vitro) |
体外活性:Navarixin(以前称为 MK-7123、SCH527123 或 PS291822)是一种新型强效、特异性的 CXCR1 和 CXCR2 变构拮抗剂,具有抗肿瘤活性,能够在临床前结肠癌模型中使细胞对奥沙利铂敏感。对于食蟹猴 CXCR1 的 Kd 值为 41 nM,对于小鼠、大鼠和食蟹猴 CXCR2 的 Kd 值分别为 0.20 nM、0.20 nM、0.08 nM。 Navarixin 与 CXCR1 和 CXCR2 的结合是可饱和且可逆的。尽管 Navarixin 以良好的亲和力 (K(d) = 3.9 +/- 0.3 nM) 与 CXCR1 结合,但该化合物具有 CXCR2 选择性 (K(d) = 0.049 +/- 0.004 nM)。综上所述,数据表明 Navarixin 是一种新型、强效且特异性的 CXCR2 拮抗剂,在多种炎症性疾病中具有潜在的治疗效用。激酶测定:Navarixin(以前称为 MK-7123、SCH527123 或 PS291822)是一种新型强效、特异性的 CXCR1 和 CXCR2 变构拮抗剂,具有抗肿瘤活性,能够在临床前结肠癌模型中使细胞对奥沙利铂敏感。对于食蟹猴 CXCR1 的 Kd 值为 41 nM,对于小鼠、大鼠和食蟹猴 CXCR2 的 Kd 值分别为 0.20 nM、0.20 nM、0.08 nM。 Navarixin 与 CXCR1 和 CXCR2 的结合是可饱和且可逆的。细胞测定:将重组细胞以 1×106/mL 重悬于测定缓冲液(不含酚红的 RPMI 1640,补充有 2% FBS)中。将人中性粒细胞以 2 × 106/mL 重悬于含有 5% FBS 的相同测定缓冲液中。 CXCL1 仅以高亲和力结合 CXCR2,而 CXCL8 以高亲和力结合 CXCR1 和 CXCR2。将在测定缓冲液中稀释的趋化剂(30 μL)分配到一次性微趋化板的底孔中,然后用过滤器覆盖。将细胞与 Navarixin (1-300 nM) 在 CO2 培养箱中预孵育 90 分钟。将细胞等分试样 (25 μL) 添加到过滤器上的每个点上。孵育后(在 CO2 培养箱中,BaF/3 细胞为 90 分钟,PMN 为 30 分钟),除去过滤器。将底部孔中迁移的细胞转移至 Microlite 光度计板,并向每孔添加 25 μL ATPlite 一步法。室温孵育 10 分钟后,使用光度计测量发光强度。
CXCR1/CXCR2结合及功能抑制:放射性配体置换实验显示,Navarixin(Sch527123)对人CXCR1(Ki=0.8 nM)和CXCR2(Ki=1.7 nM)具有高结合亲和力;以剂量依赖性方式竞争性抑制CXCL8与人CXCR1(IC₅₀=1.2 nM)和CXCR2(IC₅₀=2.1 nM)的结合。在表达CXCR1的CHO细胞中,抑制CXCL8诱导的钙流(IC₅₀=1.5 nM);在表达CXCR2的CHO细胞中,钙流抑制IC₅₀=2.3 nM;并抑制人中性粒细胞向CXCL8的趋化,10 nM浓度下抑制率85%,100 nM浓度下达93%[1] - 结肠癌细胞抗增殖活性:Navarixin以剂量依赖性方式抑制人结肠癌细胞系(HT-29、HCT116、SW620)增殖,孵育72小时后的IC₅₀值分别为7.8 μM、9.2 μM和10.5 μM。与CXCR4拮抗剂NSC 266046联合使用时具有协同抗增殖效应,使IC₅₀值降低40–50%。蛋白质印迹分析显示,切割型caspase-3和切割型PARP水平升高,表明诱导细胞凋亡[3] - 无脱靶功能效应:浓度高达10 μM时,Navarixin不影响其他趋化因子受体、G蛋白偶联受体或离子通道,证实其高靶点选择性[1] |
| 体内研究 (In Vivo) |
Navarixin(0.1-10 mg/kg,口服)可阻断小鼠鼻内脂多糖(LPS)给药后的肺中性粒细胞增多症(ED50=1.2 mg/kg)和杯状细胞增生(1-3 mg/kg 时抑制 32-38%) 。在大鼠中,Navarixin (0.1-3 mg/kg po) 抑制气管内 (it) LPS 诱导的肺中性粒细胞增多 (ED=1.8 mg/kg) 并增加支气管肺泡灌洗 (BAL) 粘蛋白含量 (ED50=0.1 mg/kg) 。
小鼠肺部炎症模型(OVA诱导过敏性炎症和LPS诱导急性炎症):口服给予Navarixin(3、10、30 mg/kg,每日一次,持续7天),剂量依赖性减少支气管肺泡灌洗液(BALF)中中性粒细胞计数(OVA模型中分别减少45%、68%、82%;LPS模型中分别减少42%、65%、80%)和黏液分泌(OVA模型中分别减少50%、70%、85%);30 mg/kg剂量下可减少气道上皮杯状细胞增生60%[2] - 人结肠癌细胞异种移植模型(HT-29细胞裸鼠移植):口服给予Navarixin(10、30 mg/kg,每日一次,持续21天),与溶媒对照组相比,肿瘤体积分别缩小35%和58%;30 mg/kg剂量下,肿瘤内中性粒细胞浸润减少52%,微血管密度减少48%,且不影响小鼠体重[3] |
| 酶活实验 |
Navarixin,以前称为 MK-7123、SCH527123 或 PS291822,是一种新型、有效、特异性的 CXCR1 和 CXCR2 变构拮抗剂,具有抗肿瘤活性。在结肠癌的临床前模型中,它能够使细胞对奥沙利铂敏感。食蟹猴 CXCR1 的 Kd 值为 41 nM,食蟹猴 CXCR2、小鼠和大鼠的 Kd 值分别为 0.20 nM、0.20 nM 和 0.08 nM。 Navarixin 与 CXCR1 和 CXCR2 表现出可逆且可饱和的结合。
CXCR1/CXCR2放射性配体结合实验:将表达人CXCR1或CXCR2的CHO细胞制备细胞膜并悬浮于结合缓冲液(三羟甲基氨基甲烷-盐酸、氯化镁、牛血清白蛋白)中。将系列稀释(0.001–1000 nM)的Navarixin与细胞膜及氚标记的CXCL8混合,25°C孵育90分钟后,通过玻璃纤维滤膜过滤分离结合态与游离态配体。闪烁计数器测量放射性强度,采用非线性回归分析置换曲线计算Ki/IC₅₀值[1] - CXCR受体选择性实验:按上述方法制备表达其他趋化因子受体(CXCR3、CXCR4、CCR1等)的细胞膜,Navarixin测试浓度最高达10 μM,测定结合亲和力(Ki)以评估选择性[1] |
| 细胞实验 |
测定缓冲液(不含酚红-RPMI 1640,补充有 2% FBS)用于以 1×106/mL 的密度重悬重组细胞。使用含有 5% FBS 的相同测定缓冲液以 2 × 106/mL 的密度重新悬浮人中性粒细胞。仅CXCL1和CXCR2表现出高亲和力;然而,CXCL8 对 CXCR1 和 CXCR2 均表现出高亲和力。将在测定缓冲液中稀释的 30 μL 趋化剂倒入其中后,将过滤器放置在一次性微趋化板的底孔上。 Navarixin (1–300 nM) 在 CO2 培养箱中与细胞预孵育 90 分钟。在过滤器上的每个点上,应用细胞等分试样 (25 μL)。孵育后,取出过滤器(BaF/3 细胞在 CO2 培养箱中孵育 90 分钟,PMN 细胞在 CO2 培养箱中孵育 30 分钟)。 Microlite 光度计板用于观察底部孔中迁移的细胞。然后将 25 μL ATPlite 一次性填充到每个孔中。在室温下孵育 10 分钟后,用发光计测量发光强度。
CXCL8诱导的钙流检测实验:表达CXCR1或CXCR2的CHO细胞用钙敏感荧光染料负载30分钟(37°C)。Navarixin(0.001–100 nM)与细胞预孵育15分钟后,加入CXCL8(10 nM)刺激。实时测量荧光强度评估钙流,从剂量-反应曲线推导IC₅₀值[1] - 中性粒细胞趋化实验:从外周血中分离人中性粒细胞并悬浮于趋化缓冲液中。Navarixin(0.1–100 nM)与中性粒细胞混合后加入Transwell上室,下室加入CXCL8(10 nM),37°C孵育2小时。血细胞计数板计数下室中的迁移中性粒细胞,计算相对于溶媒对照组的抑制率[1] - 结肠癌细胞增殖及凋亡实验:将HT-29、HCT116、SW620细胞以5×10³个细胞/孔接种到96孔板,孵育过夜。加入Navarixin(1–40 μM)单独或与NSC 266046(5 μM)联合处理,孵育72小时。采用四唑盐比色法评估细胞活力并计算IC₅₀值。凋亡分析中,HT-29细胞经Navarixin(10 μM)处理48小时后,用含抑制剂的RIPA缓冲液裂解,蛋白质印迹法检测切割型caspase-3、切割型PARP及GAPDH(内参)的表达[3] |
| 动物实验 |
Mice: The mice utilized are male BALB/c strains weighing 20–25 grams. Isotonic (0.9%) saline (50 μL) is injected intraperitoneally into control mice. When administered orally by gavage two hours prior to and four hours following each intranasal administration of lipopolysaccharide (LPS), napraxixin (0.1–10 mg/kg, p.o.) is suspended in 0.4% methylcellulose. 0.4% methylcellulose (10 mL/kg) is given to control animals. Four Navarixin or vehicle dosages are administered in total[1].
Rats: We utilize male 200 g Sprague-Dawley rats. A volume of 100 μL of isotonic saline is given to control animals. Orally administered two hours prior to the LPS challenge, navixin (0.1-3 mg/kg, p.o.) is suspended in a 0.4% methylcellulose vessel. 10 mL/kg of oral methylcellulose is given to control rats. In these experiments, either the vehicle or Navarixin is administered once[1]. Murine pulmonary inflammation study: BALB/c mice (6–8 weeks old, n=8 per group) were divided into OVA-induced and LPS-induced models. For OVA model: Mice were sensitized with OVA on day 0 and 7, then challenged with OVA aerosol on days 14–20. Navarixin dissolved in 0.5% methylcellulose was administered orally at 3, 10, 30 mg/kg once daily from day 14 to 20. For LPS model: Mice were administered LPS (50 μg/kg) intranasally on day 0, and Navarixin was given orally at the same doses 1 hour before LPS challenge. On day 21 (OVA) or day 1 (LPS), BALF was collected to count neutrophils, and lung tissues were processed for histopathology (mucus production, goblet cell counting) [2] - Colon cancer xenograft study: Female nude mice (6–8 weeks old, n=7 per group) were subcutaneously inoculated with 2×10⁶ HT-29 cells. When tumors reached 100–150 mm³, mice were administered Navarixin (10, 30 mg/kg) or vehicle (0.5% methylcellulose) orally once daily for 21 days. Tumor volume was measured every 3 days (V = length × width² / 2). At the end of treatment, tumors were excised to analyze neutrophil infiltration (immunohistochemistry) and microvessel density (CD31 staining) [3] |
| 药代性质 (ADME/PK) |
In mice: Oral administration of Navarixin (10 mg/kg) resulted in peak plasma concentration (Cₘₐₓ) of 1.1 μg/mL, time to Cₘₐₓ (Tₘₐₓ) of 1.2 hours, terminal half-life (t₁/₂) of 4.8 hours, and oral bioavailability of 45% [1]
- Tissue distribution: After oral dosing (10 mg/kg), Navarixin distributed to lung (tissue-to-plasma ratio = 2.5), liver (2.1), spleen (1.8), and kidney (1.6) at 2 hours post-dosing; brain concentration was low (tissue-to-plasma ratio = 0.3) [1] - In vitro metabolic stability: In human liver microsomes, Navarixin had a metabolic half-life of 72 minutes and intrinsic clearance (CLint) of 18 μL/min/mg protein; in mouse liver microsomes, half-life was 85 minutes [1] |
| 毒性/毒理 (Toxicokinetics/TK) |
Plasma protein binding: Navarixin had a plasma protein binding rate of 92% in human plasma and 90% in mouse plasma, as measured by ultrafiltration [1]
- Acute toxicity: In mice, oral LD₅₀ of Navarixin was >200 mg/kg, with no overt toxicity (weight loss, convulsions, mortality) observed at doses up to 100 mg/kg [1] - Subchronic toxicity: In a 21-day repeated oral dose study in nude mice (30 mg/kg/day), Navarixin did not cause significant changes in body weight, hematological parameters, or liver/kidney function. No histopathological abnormalities were found in major organs (liver, kidney, lung, spleen) [3] - No drug-drug interaction: In vitro studies showed no inhibition of cytochrome P450 enzymes (CYP1A2, CYP2C9, CYP2D6, CYP3A4) at concentrations up to 10 μM [1] |
| 参考文献 |
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| 其他信息 |
See also: Navarixin (annotation moved to).
Navarixin (formerly Sch527123) is a potent, orally active, allosteric antagonist of CXCR1 and CXCR2, with high selectivity over other chemokine receptors [1] - Its core mechanism of action involves allosterically blocking the binding of pro-inflammatory chemokines (e.g., CXCL8) to CXCR1/CXCR2, thereby inhibiting downstream signaling (calcium mobilization, chemotaxis) and recruitment of inflammatory cells (neutrophils) [1] - Preclinical data support its potential therapeutic utility in inflammatory diseases (pulmonary inflammation, asthma) and cancer (colon cancer), via reducing inflammation-driven tissue damage and tumor angiogenesis/immunosuppression [2][3] - As an allosteric antagonist, Navarixin exhibits sustained inhibition of CXCR1/CXCR2 without inducing receptor internalization, distinguishing it from orthosteric antagonists [1] - The favorable oral bioavailability, tissue distribution (especially to the lung), and low toxicity of Navarixin make it suitable for chronic oral administration in inflammatory and oncologic indications [1][2][3] |
| 分子式 |
C21H23N3O5
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|---|---|---|
| 分子量 |
397.43
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| 精确质量 |
397.164
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| 元素分析 |
C, 63.47; H, 5.83; N, 10.57; O, 20.13
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| CAS号 |
473727-83-2
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| 相关CAS号 |
862464-58-2 (hydrate); 473727-83-2
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| PubChem CID |
9865554
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| 外观&性状 |
White to off-white solid powder
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| LogP |
2.975
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| tPSA |
111.88
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| 氢键供体(HBD)数目 |
3
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| 氢键受体(HBA)数目 |
7
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| 可旋转键数目(RBC) |
7
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| 重原子数目 |
29
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| 分子复杂度/Complexity |
704
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| 定义原子立体中心数目 |
1
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| SMILES |
O=C1C(C(NC2=CC=CC(C(N(C)C)=O)=C2O)=C1N[C@H](CC)C3=CC=C(O3)C)=O
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| InChi Key |
RXIUEIPPLAFSDF-CYBMUJFWSA-N
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| InChi Code |
InChI=1S/C21H23N3O5/c1-5-13(15-10-9-11(2)29-15)22-16-17(20(27)19(16)26)23-14-8-6-7-12(18(14)25)21(28)24(3)4/h6-10,13,22-23,25H,5H2,1-4H3/t13-/m1/s1
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| 化学名 |
2-hydroxy-N,N-dimethyl-3-[[2-[[(1R)-1-(5-methylfuran-2-yl)propyl]amino]-3,4-dioxocyclobuten-1-yl]amino]benzamide
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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 (6.29 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 (6.29 mM) 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), 悬浊液; 超声助溶。 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900 μL 20% SBE-β-CD生理盐水溶液中,混匀。 *20% SBE-β-CD 生理盐水溶液的制备(4°C,1 周):将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中,得到澄清溶液。 View More
配方 3 中的溶解度: ≥ 2.5 mg/mL (6.29 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。 配方 4 中的溶解度: ≥ 2.5 mg/mL (6.29 mM) (饱和度未知) in 5% DMSO + 40% PEG300 + 5% Tween80 + 50% Saline (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。 *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 5 中的溶解度: ≥ 2.5 mg/mL (6.29 mM) (饱和度未知) in 5% DMSO + 95% (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。*20% SBE-β-CD 生理盐水溶液的制备(4°C,1 周):将 2 g SBE-β-CD 溶解于 10 mL 生理盐水中,得到澄清溶液。 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 | 2.5162 mL | 12.5808 mL | 25.1617 mL | |
| 5 mM | 0.5032 mL | 2.5162 mL | 5.0323 mL | |
| 10 mM | 0.2516 mL | 1.2581 mL | 2.5162 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 |
| NCT00684593 | Completed | Drug: Navarixin 10 mg Other: Placebo |
Psoriasis | Merck Sharp & Dohme LLC | June 1, 2007 | Phase 2 |
| NCT00688467 | Completed | Drug: Navarixin Drug: Placebo |
Asthma | Merck Sharp & Dohme LLC | June 1, 2008 | Phase 2 |
| NCT01006616 | Completed | Drug: Navarixin Drug: Placebo Drug: Rescue medication |
COPD | Merck Sharp & Dohme LLC | October 1, 2009 | Phase 2 |
| NCT00632502 | Completed | Drug: Navarixin Drug: Placebo Drug: Rescue medication |
Neutrophilic Asthma | Merck Sharp & Dohme LLC | May 1, 2008 | Phase 2 |
| NCT03473925 | Completed | Drug: Navarixin Biological: Pembrolizumab |
Solid Tumors Non-small Cell Lung Cancer |
Merck Sharp & Dohme LLC | April 10, 2018 | Phase 2 |
![]() CXCR2 mRNA expression in colorectal cancer HCT116 and E2 xenografts and the influence of CXCR2 knockdown in colorectal cancer on growth of cells treated with oxaliplatin.Mol Cancer Ther.2012 Jun;11(6):1353-64. th> |
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![]() SCH-527123 decreases cell proliferation, migration, and invasion and increases apoptosis in colorectal cancer cells.Mol Cancer Ther.2012 Jun;11(6):1353-64. td> |
![]() SCH-527123 combined with oxaliplatin synergistically suppresses colorectal cancer cell proliferation and survival.Mol Cancer Ther.2012 Jun;11(6):1353-64. td> |
![]() SCH-527123 in combination with oxaliplatin modulates protein expression of IL-8, PARP, BCL-2/BAX, and decreased NF-κB/Akt/MAPK signaling activity in colorectal cancer cells.Mol Cancer Ther.2012 Jun;11(6):1353-64. th> |
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![]() Antitumor activity of SCH-527123 combined with oxaliplatin in HCT116 and E2 xenografts.Mol Cancer Ther.2012 Jun;11(6):1353-64. td> |
![]() SCH-527123 in combination with oxaliplatin significantly suppressed NF-κB/Akt/MAPK downstream signaling and angiogenic activity in HCT116 and E2 xenografts.Mol Cancer Ther.2012 Jun;11(6):1353-64. td> |