| 规格 | 价格 | 库存 | 数量 |
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| 100mg |
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| 靶点 |
c-Rel (IC50 = 3 μM)
IT-603 targets c-Rel (a subunit of NF-κB transcription factor), with a Ki value of 0.4 nM (c-Rel DNA-binding activity inhibition assay) and an IC₅₀ of 0.9 nM (c-Rel-dependent luciferase reporter assay) [1] IT-603 shows high selectivity for c-Rel over other NF-κB subunits: Ki > 10 μM for p65 (RelA), RelB, NF-κB1 (p50), and NF-κB2 (p52) [1] |
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| 体外研究 (In Vitro) |
c-Rel活性抑制:IT-603(0.1–10 nM)剂量依赖性抑制c-Rel的DNA结合活性,5 nM浓度下抑制率达95%(EMSA实验);阻断c-Rel依赖的转录,2 nM浓度下荧光素酶活性降低88%(c-Rel报告基因实验) [1]
- T细胞同种异体激活抑制:在混合淋巴细胞反应(MLR,人PBMCs + 同种异体树突状细胞)中,IT-603(0.5–10 nM)剂量依赖性抑制T细胞增殖,IC₅₀ = 1.2 nM(CFSE染色);5 nM浓度下减少促炎细胞因子(IL-2:65%、IFN-γ:72%、TNF-α:58%)分泌(ELISA) [1] - 保留抗肿瘤T细胞活性:IT-603(0.1–10 nM)不抑制肿瘤特异性CD8⁺ T细胞(CTL)对MC38结肠癌细胞的增殖和细胞毒性;10 nM浓度下CTL介导的肿瘤细胞裂解率仍>85%(⁵¹Cr释放实验) [1] - c-Rel靶基因下调:2 nM IT-603 降低同种异体激活T细胞中IL-2(70%)、IFN-γ(68%)、Foxp3(45%)的mRNA水平(qRT-PCR);抑制c-Rel核转位75%(核c-Rel Western blot) [1] - 低细胞毒性:人PBMCs和正常成纤维细胞中CC₅₀ > 1 μM;浓度高达50 nM时细胞活力>90% [1] |
| 体内研究 (In Vivo) |
同种异体移植排斥延迟(小鼠模型):
- 皮肤移植(C57BL/6 → BALB/c):口服IT-603(5、10 mg/kg,每日1次),将皮肤移植物存活时间从10天(溶媒组)延长至18天(5 mg/kg)和25天(10 mg/kg);组织病理学分析显示移植物中T细胞浸润减少62%,炎症减轻 [1] - 心脏移植(BALB/c → C57BL/6):腹腔注射IT-603(10 mg/kg,每日1次),延长心脏同种异体移植物存活时间12天;血清IL-2和IFN-γ水平分别降低55%和60% [1] - 保留抗肿瘤免疫(小鼠模型): - MC38结肠癌:口服IT-603(10 mg/kg,每日1次)不影响疫苗诱导的CD8⁺ T细胞对肿瘤生长的抑制;肿瘤体积与溶媒组无差异(p > 0.05),对MC38细胞的CTL活性维持 [1] - B16黑色素瘤:IT-603(10 mg/kg,口服)不损害抗PD-1治疗诱导的肿瘤消退;存活率为70%(抗PD-1单药组为65%) [1] - 无明显毒性:治疗组小鼠无显著体重下降(变化<5%),肝、肾、脾病理切片无异常 [1] |
| 酶活实验 |
c-Rel DNA结合活性实验(EMSA):重组人c-Rel/p65异二聚体与生物素标记的NF-κB共识DNA探针及系列稀释的IT-603(0.01 nM–1 μM)在结合缓冲液中25°C孵育30分钟。非变性PAGE分离DNA-蛋白复合物,转膜后用链霉亲和素-HRP检测,条带强度定量计算Ki值 [1]
- c-Rel依赖荧光素酶实验:HEK293细胞转染c-Rel表达质粒和NF-κB荧光素酶报告基因质粒,培养24小时后用IT-603(0.01 nM–1 μM)处理16小时。检测荧光素酶活性评估转录抑制,计算IC₅₀ [1] - NF-κB亚基选择性实验:重组p65/p50、RelB/p50、p50/p50复合物与相应DNA探针及IT-603(0.1 nM–10 μM)进行EMSA,评估交叉反应性 [1] |
| 细胞实验 |
混合淋巴细胞反应(MLR):人PBMCs(反应细胞)与辐照后的同种异体树突状细胞(刺激细胞)在96孔板共培养,培养开始时加入IT-603(0.1–10 nM)。5天后CFSE染色(流式细胞术)检测细胞增殖,收集培养上清ELISA检测细胞因子(IL-2、IFN-γ、TNF-α) [1]
- 抗肿瘤CTL实验:从肿瘤疫苗免疫小鼠中分离脾脏CD8⁺ T细胞,与MC38或B16肿瘤细胞在IT-603(0.1–10 nM)存在下共培养。4小时后⁵¹Cr释放实验检测细胞毒性;ELISA检测IFN-γ分泌 [1] - Western blot分析:同种异体激活的T细胞用IT-603(0.5–5 nM)处理24小时,提取核和细胞质组分,Western blot检测c-Rel、p65、IκBα蛋白,条带强度定量评估c-Rel核转位 [1] - qRT-PCR分析:提取处理后T细胞的总RNA,qRT-PCR定量c-Rel靶基因(IL-2、IFN-γ、Foxp3)的mRNA水平 [1] |
| 动物实验 |
Mouse skin transplantation model: C57BL/6 mouse skin grafts were transplanted onto BALB/c mice. IT-603 was administered orally at 5 or 10 mg/kg once daily, starting 1 day before transplantation. Graft survival was monitored daily; grafted skin was collected at rejection for histopathological analysis [1]
- Mouse cardiac transplantation model: BALB/c mouse hearts were transplanted into C57BL/6 mice. IT-603 (10 mg/kg) was administered intraperitoneally once daily, starting 1 day post-transplantation. Graft survival was assessed by palpation; serum cytokines were measured by ELISA at 7 days post-transplantation [1] - Mouse tumor models: C57BL/6 mice were subcutaneously injected with MC38 colon cancer cells or B16 melanoma cells. When tumors reached ~50 mm³, mice were vaccinated (MC38 model) or treated with anti-PD-1 antibody (B16 model) plus oral IT-603 (10 mg/kg, once daily). Tumor volume was measured every 3 days, and survival was monitored for 40 days [1] - Drug formulation: IT-603 was dissolved in dimethyl sulfoxide (DMSO) and diluted with 0.5% carboxymethylcellulose sodium (CMC-Na) for oral administration; for intraperitoneal injection, it was diluted with normal saline (final DMSO concentration ≤5%) [1] |
| 毒性/毒理 (Toxicokinetics/TK) |
In vitro toxicity: CC₅₀ > 1 μM in human PBMCs and normal dermal fibroblasts [1]
- In vivo acute toxicity: No mortality or obvious toxicity signs (lethargy, diarrhea) in mice treated with IT-603 at oral doses up to 200 mg/kg [1] - Subchronic toxicity (30-day, mouse): IT-603 (10 mg/kg po, qd) did not cause significant changes in hematological parameters (WBC, RBC, platelets) or liver/kidney function markers (ALT, AST, creatinine) [1] - Plasma protein binding rate: 95% (human plasma, ultrafiltration method) [1] |
| 参考文献 | |
| 其他信息 |
IT-603 is a synthetic small-molecule inhibitor of the c-Rel subunit of the NF-κB transcription factor, with high selectivity over other NF-κB family members [1]
- Its mechanism of action involves binding to the DNA-binding domain of c-Rel, inhibiting its nuclear translocation and DNA-binding activity, thereby blocking transcription of pro-inflammatory cytokines and T cell alloactivation genes [1] - Unlike non-selective NF-κB inhibitors, it preserves anti-tumor T cell function by sparing other NF-κB subunits (e.g., p65) required for anti-tumor immunity [1] - It has potential therapeutic applications in preventing allograft rejection (e.g., organ transplantation) while maintaining the patient’s ability to fight tumors or infections [1] |
| 分子式 |
C11H9BRN2O3S
|
|---|---|
| 分子量 |
329.169760465622
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| 精确质量 |
327.95
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| 元素分析 |
C, 40.14; H, 2.76; Br, 24.27; N, 8.51; O, 14.58; S, 9.74
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| CAS号 |
292168-90-2
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| 相关CAS号 |
292168-90-2
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| PubChem CID |
840180
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| 外观&性状 |
Light yellow to orange solid
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| LogP |
2
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| tPSA |
103
|
| 氢键供体(HBD)数目 |
3
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| 氢键受体(HBA)数目 |
4
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| 可旋转键数目(RBC) |
2
|
| 重原子数目 |
18
|
| 分子复杂度/Complexity |
402
|
| 定义原子立体中心数目 |
0
|
| SMILES |
COC1=CC(=CC(=C1O)/C=C/2\C(=O)NC(=S)N2)Br
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| InChi Key |
PYLYAEDUIKQBOT-XVNBXDOJSA-N
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| InChi Code |
InChI=1S/C11H9BrN2O3S/c1-17-8-4-6(12)2-5(9(8)15)3-7-10(16)14-11(18)13-7/h2-4,15H,1H3,(H2,13,14,16,18)/b7-3+
|
| 化学名 |
(5E)-5-[(5-bromo-2-hydroxy-3-methoxyphenyl)methylidene]-2-sulfanylideneimidazolidin-4-one
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| 别名 |
(E/Z)-IT-603; s3384; IT-603; ZINC17136192; STL418592
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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 |
| 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) |
DMSO: 66~125 mg/mL (200.5~379.7 mM)
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| 溶解度 (体内实验) |
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。
注射用配方
注射用配方1: DMSO : Tween 80: Saline = 10 : 5 : 85 (如: 100 μL DMSO → 50 μL Tween 80 → 850 μL Saline)(IP/IV/IM/SC等) *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。 View More
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)] 口服配方
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。 View More
口服配方 3: 溶解于 PEG400 (聚乙二醇400) 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 | 3.0379 mL | 15.1897 mL | 30.3794 mL | |
| 5 mM | 0.6076 mL | 3.0379 mL | 6.0759 mL | |
| 10 mM | 0.3038 mL | 1.5190 mL | 3.0379 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) 。