Talarozole
(Synonyms: 他拉罗唑; R115866) 目录号 : GC17063
Talarozole (R115866) 是一种口服全身性全反式维甲酸代谢阻断剂 (RAMBA)，可增加内源性全反式维甲酸 (RA) 的细胞内水平。
Cas No.:201410-53-9
Sample solution is provided at 25 µL, 10mM.
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Talarozole is a selective inhibitor of cytochrome P450 with an IC50 at 4 nM [1].
Cytochrome P450 is concerned with oxidative metabolism of many organic chemicals of diverse structure,both in exogenous and endogenous environment. Cytochrome P450 are notable both for the diversity of reactions that they catalyze and the range of chemically dissimilar substrates upon which they act.
Talarozole is a potent and selective inhibitor of cytochrome P450 26-mediated breakdown of endogenous all-trans-retinoic acid for the treatment of psoriasis and acne. Talarozole treatment increased the mRNA expression of CRABP2, KRT4, CYP26A1 and CYP26B1 dose, meanwhile, compared with vehicle-treated skin, decreased the expression of KRT2 and IL-1α. There was no mRNA change in retinol-metabolizing enzymes. No induction of epidermal thickness or overt skin inflammation in talarozole-treated skin. Immunofluorescence analysis substantiated an upregulation of KRT4 protein, however, there were no upregulation of CYP26B1 and CYP26A1 expression was found.[1, 2]
There were 0.1% of the dose found in the skin itself after 12-24 h. The results of distribution of talarozole within the skin show that 80% was located in the epidermis, meanwhile, the remaining 20% was detected in the dermis. [3]
References:
[1] Pavez Loriè E, Cools M, Borgers M, Topical treatment with CYP26 inhibitor talarozole (R115866) dose dependently alters the expression of retinoid-regulated genes in normal human epidermis. The British Journal of Dermatology,2009,160(1):
26-36.
[2] Geria AN, Scheinfeld NS. Talarozole, a selective inhibitor of P450-mediated all-trans retinoic acid for the treatment of psoriasis and acne. Current Opinion In Investigational Drugs,2008 ,9(11):1228-1237.
[3] Baert B, De Spiegeleer B. Local skin pharmacokinetics of talarozole, a new retinoic acid metabolism-blocking agent. Skin Pharmacol Physiol,2011,24(3):151-159
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Cell experiment: |
Human liver microsomes (0.2 mg/mL) are incubated with 4-OH-atRA (500 nM) and NADPH, NADP+ or NAD+ (each at 2 mM) in 100 mM KPi buffer pH 7.4. In addition, 4-OH-atRA is incubated with human liver microsomes in the presence and absence of Talarozole (1 μM), a CYP26A1 specific inhibitor, and Ketoconazole (10 μM) a pan-P450 inhibitor and with NADPH as a cofactor. Following a 5 min pre-incubation, the reactions are initiated with the addition of cofactor and incubated for 30 minutes. At 30 min the reactions are quenched with equal volume of Acetonitrile and centrifuged at 3,000 g for 15 min. The supernatants are collected and 4-oxo-atRA formation is analyzed by LC-MS/MS. All incubations are normalized to a no cofactor control[2]. |
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Animal experiment: |
Mice[3]Talarozole is administered to mice as a single dose (2.5 mg/kg) or as multiple doses for three days. Serum Talarozole concentrations and serum, liver and testes atRA concentrations are measured by LC-MS/MS. Inhibition of CYP26 and changes inatRA concentrations in each tissue are predicted based on CYP26 activity in vitro and Talarozole disposition. Markers of fatty acid oxidation in the liver and spermatogonial differentiation in the testes are measured following Talarozole treatment. |
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References: [1]. Diaz P, et al. Development and Characterization of Novel and Selective Inhibitors of Cytochrome P450 CYP26A1, theHuman Liver Retinoic Acid Hydroxylase. J Med Chem. 2016 Mar 24;59(6):2579-95. |
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| Cas No. | 201410-53-9 | SDF | |
| 别名 | 他拉罗唑; R115866 | ||
| 化学名 | N-[4-[2-ethyl-1-(1,2,4-triazol-1-yl)butyl]phenyl]-1,3-benzothiazol-2-amine | ||
| Canonical SMILES | CCC(CC)C(C1=CC=C(C=C1)NC2=NC3=CC=CC=C3S2)N4C=NC=N4 | ||
| 分子式 | C21H23N5S | 分子量 | 377.51 |
| 溶解度 | Soluble in DMSO | 储存条件 | Store at -20°C |
| 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 | 2.6489 mL | 13.2447 mL | 26.4894 mL |
| 5 mM | 0.5298 mL | 2.6489 mL | 5.2979 mL |
| 10 mM | 0.2649 mL | 1.3245 mL | 2.6489 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: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet