2. GPCR/G Protein Neuronal Signaling Immunology/Inflammation
  3. Histamine Receptor
  4. Toreforant

Toreforant  (Synonyms: JNJ-38518168)

目录号: HY-16756 纯度: 99.82%
COA 产品使用指南

摩尔计算器

Toreforant 是组胺 H4 (H4R) 受体一个有效的、选择性拮抗剂，人类中的 Ki 值为 8.4 nM。

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Toreforant Chemical Structure

Toreforant Chemical Structure

CAS No. : 952494-46-1

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1 mg ￥2600
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Customer Review

Toreforant 相关抗体

Top Publications Citing Use of Products

查看 Histamine Receptor 亚型特异性产品:

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H1 Receptor H2 Receptor H3 Receptor H4 Receptor Histamine Receptor

  • 生物活性

  • 实验参考方法

  • 纯度 & 产品资料

  • 参考文献

生物活性

Toreforant is a potent and selective histamine H4 receptor (H4R) antagonist, with a Ki at the human receptor of 8.4 nM.

IC50 & Target

H4 receptor

8.4±2.2 nM (IC50)

体外研究
(In Vitro)

In human polymorphonuclear leukocytes, Toreforant inhibits the histamine-induced shape change of human eosinophils and produces a rightward shift in the histamine dose response curves indicating that it is acting as an antagonist of the human H4R in these primary cells. This is not an equilibrium measurement and therefore the calculation of a pA2 is complicated. The pA2 can be estimated using the shift seen the lowest concentration of antagonist. This yields a pA2 of around 7.5 consistent with the results in the transfected system. This assay can also be performed in whole blood and, as for the purified cells, Toreforant is able to inhibit the actions of histamine. The IC50 values are 296 nM and 780 nM when 100 nM and 300 nM histamine are used, respectively[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Toreforant 相关抗体:
体内研究
(In Vivo)

The animals treated with 100 mg/kg toreforant have reduced disease severity scores. The reduction in scores is similar to JNJ 28307474. A model of histamine-induced scratching in CD-1 mice (n=5 per group) is used to judge the anti-pruritic effects of Toreforant. Unlike other H4R antagonists, Toreforant is not efficacious in reducing histamine-mediated pruritus. After oral administration to rats, Toreforant-derived radioactivity is widely distributed into tissues; however, it is not quantifiable in cerebellum, cerebrum, medulla, and spinal cord in either Long Evans or Sprague Dawley rats, suggesting that drug-derived radioactivity does not cross the blood-brain barrier. Neuropathic pain models in rats are conducted with Toreforant and an H4R antagonist that does cross the blood-brain barrier, JNJ 39758979. In a rat spinal nerve ligation model JNJ 39758979 was able to significantly attenuate the mechanical allodynia induced in the model, however Toreforant has no activity[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial
分子量

392.54

Formula

C23H32N6
CAS 号
性状

固体

颜色

Off-white to light yellow

运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

4°C, sealed storage, away from moisture and light

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

溶解性数据
细胞实验： 

DMSO 中的溶解度 : 100 mg/mL (254.75 mM; 超声助溶; 吸湿的 DMSO 对产品的溶解度有显著影响，请使用新开封的 DMSO)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.5475 mL 12.7376 mL 25.4751 mL
5 mM 0.5095 mL 2.5475 mL 5.0950 mL
查看完整储备液配制表

* 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, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)。-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。

  • 摩尔计算器

  • 稀释计算器

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量
=
浓度
×
体积
×
分子量 *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start)

C1

×
体积 (start)

V1

=
浓度 (final)

C2

×
体积 (final)

V2

动物实验：

请根据您的 实验动物和给药方式 选择适当的溶解方案。

以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：
——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用；
以下溶剂前显示的百分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

  • 方案 一

    请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.37 mM); 澄清溶液

    此方案可获得 ≥ 2.5 mg/mL（饱和度未知）的澄清溶液。

    以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；再向上述体系中加入 50 μL Tween-80，混合均匀；然后再继续加入 450 μL 生理盐水 定容至 1 mL。

    生理盐水的配制：将 0.9 g 氯化钠，溶解于 ddH₂O 并定容至 100 mL，可以得到澄清透明的生理盐水溶液。
  • 方案 二

    请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (6.37 mM); 澄清溶液

    此方案可获得 ≥ 2.5 mg/mL（饱和度未知）的澄清溶液。

    以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液 中，混合均匀。

    20% SBE-β-CD in Saline 的配制（4°C，储存一周）：2 g SBE-β-CD（磺丁基醚 β-环糊精）粉末定容于 10 mL 的生理盐水中，完全溶解至澄清透明。
动物溶解方案计算器
请输入动物实验的基本信息：

给药剂量

mg/kg

动物的平均体重

g

每只动物的给药体积

μL

动物数量

只
由于实验过程有损耗，建议您多配一只动物的量
请输入您的动物体内配方组成：
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
如果您的动物是免疫缺陷鼠或者体弱鼠，建议 DMSO 中的在最后工作液体系中的占比尽量不超过 2%。
方案所需 助溶剂 包括：DMSO， ，均可在 MCE 网站选购。 ，Tween 80，均可在 MCE 网站选购。
计算结果
工作液所需浓度 : mg/mL
储备液配制方法 : mg 药物溶于 μL  DMSO（母液浓度为 mg/mL）。

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

您所需的储备液浓度超过该产品的实测溶解度，以下方案仅供参考，如有需要，请与 MCE 中国技术支持联系。
动物实验体内工作液的配制方法 : 取 μL DMSO 储备液，加入 μL 。 μL ，混合均匀至澄清，再加 μL Tween 80，混合均匀至澄清，再加 μL 生理盐水。
连续给药周期超过半月以上，请谨慎选择该方案。
请确保第一步储备液溶解至澄清状态，从左到右依次添加助溶剂。您可采用超声加热 （超声清洗仪，建议频次 20-40 kHz），涡旋吹打等方式辅助溶解。
纯度 & 产品资料
参考文献
Animal Administration
[1]

Mice[1]
The ovalbumin mouse asthma model and the collageninduced arthritis model are conducted. Toreforant is dosed orally in 20% hydroxypropyl-β-cyclodextrin. In the collagen-induced arthritis model Toreforant is given orally twice a day starting with the first signs of disease onset around Day 30 and continued for 14 days. CD-1 mice (5 per group) are dosed with vehicle (20% hydroxypropyl-β-cyclodextrin), Toreforant or JNJ 28307474, as a positive control, at 50 mg/kg orally, 60 mins prior to the intra-dermal injection of histamine. Bouts of scratching are recorded over a 20 minute period. In a subsequent experiment mice are orally dosed with Toreforant (100 mg/kg) at 24, 8, 4 and 1 h prior to intra-dermal injection of histamine and similarly monitored. The area at the back of the neck of mice is shaved 24 hours prior to an intra-dermal injection of 20 μL of 100 μg compound 48/80. Both knockout and wild-type mice (five mice per group) are dosed with vehicle, Toreforant (50 mg/kg) or JNJ 28307474 (50 mg/kg), orally, 60 mins prior to the intradermal injection. Bouts of scratching are recorded over a 20 minute period. Terminal (t=80 min) plasma and brain samples are analyzed for drug concentration. Male Sprague-Dawley rats are deeply anesthetized with isoflurane/oxygen inhalational anesthesia [1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
参考文献

Toreforant 相关分类

完整储备液配制表

* 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, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)。-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。

可选溶剂 浓度 溶剂体积 质量 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.5475 mL 12.7376 mL 25.4751 mL 63.6878 mL
5 mM 0.5095 mL 2.5475 mL 5.0950 mL 12.7376 mL
10 mM 0.2548 mL 1.2738 mL 2.5475 mL 6.3688 mL
15 mM 0.1698 mL 0.8492 mL 1.6983 mL 4.2459 mL
20 mM 0.1274 mL 0.6369 mL 1.2738 mL 3.1844 mL
25 mM 0.1019 mL 0.5095 mL 1.0190 mL 2.5475 mL
30 mM 0.0849 mL 0.4246 mL 0.8492 mL 2.1229 mL
40 mM 0.0637 mL 0.3184 mL 0.6369 mL 1.5922 mL
50 mM 0.0510 mL 0.2548 mL 0.5095 mL 1.2738 mL
60 mM 0.0425 mL 0.2123 mL 0.4246 mL 1.0615 mL
80 mM 0.0318 mL 0.1592 mL 0.3184 mL 0.7961 mL
100 mM 0.0255 mL 0.1274 mL 0.2548 mL 0.6369 mL
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Toreforant952494-46-1JNJ-38518168JNJ38518168JNJ 38518168Histamine ReceptorInhibitorinhibitorinhibit

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