ITE
目录号 : GC12628
An endogenous AhR agonist
Cas No.:448906-42-1
Sample solution is provided at 25 µL, 10mM.
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2-(1′H-indole-3′-carbonyl)-thiazole-4-carboxylic acid methyl ester (ITE) is a nontoxic immunosuppressive endogenous aryl hydrocarbon receptor (AhR) ligand [1] [2]. Its EC50 identified via yeast AhR assay is 7.8×10−10 mol/l [3].
AhR is a transcription factor mediating toxic effects of environmental pollutants such as 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD), it is activated by ligand [2].
ITE inhibited TGFβ1-induced myofibroblast differentiation in TGFβ1-challenged cultures of primary human fibroblasts from several distinct tissue types. In primary human orbital fibroblasts, ITE inhibited TGFβ1-induced nuclear translocation of Smad2/3/4 and its subsequent binding to SBE, but it did not inhibit TGFβ1-induced phosphorylation of Smad2/3, Erk1/2, or Akt [4], it inhibited TGFβ1 (1 ng/mL)-induced α-smooth muscle actin (α-SMA) expression, extracellular matrix production [5]. The inhibition of ITE to TGFβ1-induced myofibroblast differentiation in primary human fibroblasts is AhR independent [5].
In Sprague-Dawley rats maintained under a 12 h light/12 h dark cycle and given free access to a solid diet and distilled water, ITE at 1.6 and 8.0 mg/kg bw, significantly increased the CYP1A1 mRNA levels by 5.59 and 68.55 fold, respectively. It indicated that ITE activated AhR activation in placentas. 8.0 mg/kg bw ITE elevated the level of HIF-1a mRNA, induced the levels of VEGF-A, VEGF-B and PIGF mRNA in a dose-dependent manner [6].
References:
[1]. Lindsey F. Nugent, Guangpu Shi, Barbara P. Vistica, et al. ITE, A Novel Endogenous Nontoxic Aryl Hydrocarbon Receptor Ligand, Efficiently Suppresses EAU and T-Cell–Mediated Immunity. Invest Ophthalmol Vis Sci., 2013, 54(12):7463-7469.
[2]. Jaishree Bankoti, Ben Rase, Tom Simones, et al. Functional and phenotypic effects of AhR activation in inflammatory dendritic cells. Toxicol Appl Pharmacol., 2010, 246(1-2):18-28.
[3]. S. Medjakovic and A. Jungbauer. Red clover isoflavones biochanin A and formononetin are potent ligands of the human aryl hydrocarbon receptor. Journal of Steroid Biochemistry & Molecular Biology, 2008, 108:171-177.
[4]. Geniece M. Lehmann, Xia Xi, Ajit A. Kulkarni, et al. The Aryl Hydrocarbon Receptor Ligand ITE Inhibits TGFβ1-Induced Human Myofibroblast Differentiation. American Journal of Pathology, 2011, 178(4):1556–1567.
[5]. Geniece M. Lehmann, Xia Xi, Ajit A. Kulkarni, et al. The Aryl Hydrocarbon Receptor Ligand ITE Inhibits TGF1-Induced Human Myofibroblast Differentiation. The American Journal of Pathology, 2011, 178(4):1556-1567.
[6]. Yanming Wu, Xiao Chen, Qian Zhou, et al. ITE and TCDD Differentially Regulate the Vascular Remodeling of Rat Placenta via the Activation of AhR. PLoS ONE, 2014, 9(1): e86549.
Cell experiment: | Subconfluent cells (25, 000 cells/well) are seeded in 96-well plates. Cells are treated with ITE at 5, 10 and 20 µM or DMSO (0.1% v/v) in ECM for 2, 4 or 6 days with a change of ECM containing DMSO or ITE every other day (5 wells/treatment). At the end of treatment, cells are incubated with MTT reagent for 4 hr, and solubilized in crystal dissolving solution (100 µL/well) for 20 min. The absorbance is determined at 570 nm using the microplate reader[3]. |
Animal experiment: | Mice[2]Eight- to 12-week-old female B10.A mice is used in the assay. Daily treatment starts on day 0 and consists of 200 μg of ITE suspended in 0.2 mL PBS, given intraperitoneally. Control mice are similarly treated with 0.2 mL of the vehicle, PBS containing 3.6% DMSO[2]. |
References: [1]. Song J, et al. A ligand for the aryl hydrocarbon receptor isolated from lung. Proc Natl Acad Sci U S A. 2002 Nov 12;99(23):14694-9. | |
| Cas No. | 448906-42-1 | SDF | |
| 化学名 | methyl 2-(1H-indole-3-carbonyl)-1,3-thiazole-4-carboxylate | ||
| Canonical SMILES | COC(=O)C1=CSC(=N1)C(=O)C2=CNC3=CC=CC=C32 | ||
| 分子式 | C14H10N2O3S | 分子量 | 286.3 |
| 溶解度 | ≥ 28.6mg/mL in DMSO | 储存条件 | Store at RT |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 3.4928 mL | 17.4642 mL | 34.9284 mL |
| 5 mM | 0.6986 mL | 3.4928 mL | 6.9857 mL |
| 10 mM | 0.3493 mL | 1.7464 mL | 3.4928 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
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，
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 saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet