Home>>Signaling Pathways>> Neuroscience>> Histamine Receptor>>JNJ-39758979

JNJ-39758979 Sale

目录号 : GC30821

JNJ-39758979是一个有选择性且具有高亲和性的组胺H4受体拮抗剂,其Ki值为12.5nM。

JNJ-39758979 Chemical Structure

Cas No.:1046447-90-8

规格 价格 库存 购买数量
10mM (in 1mL DMSO)
¥1,971.00
现货
1mg
¥810.00
现货
5mg
¥2,250.00
现货
10mg
¥3,510.00
现货
50mg
¥9,000.00
现货
100mg
¥13,500.00
现货

电话:400-920-5774 Email: sales@glpbio.cn

Customer Reviews

Based on customer reviews.

Sample solution is provided at 25 µL, 10mM.

产品文档

Quality Control & SDS

View current batch:

实验参考方法

Animal experiment:

The model of histamine-induced scratching in C57/bl6 mice (n=6 to 8 per group) is used to judge the antipruritic effects of JNJ-39758979. JNJ-39758979 is given p.o. in 20% hydroxypropyl-β-cyclodextran 30 min before an intradermal injection of histamine (100 μg). Bouts of scratching are calculated using an automated system. Immediately after histamine injection, mice are placed in containers above a solenoid, and magnets previously placed on the mouse ear generate scratch-specific signals that are counted over a 20 min time span[1].

References:

[1]. Savall BM, et al. Discovery and SAR of 6-alkyl-2,4-diaminopyrimidines as histamine H receptor antagonists. J Med Chem. 2014 Mar 27;57(6):2429-39.

产品描述

JNJ-39758979 is a selective, high-affinity histamine H4 receptor antagonist with a Ki of 12.5 nM.

JNJ-39758979 is a selective, high-affinity histamine H4 receptor antagonist with a Ki of 12.5 nM. The affinity of JNJ-39758979 for the rat (Ki=188 nM) and guinea pig H4R (Ki=306 nM) is moderate, and JNJ-39758979 has little if any affinity for the dog H4R (Ki≥10 μM). JNJ-39758979 is metabolically stable (t1/2 >120 min) when incubated in vitro with human, rat, dog, or monkey liver microsomes[1].

JNJ-39758979 shows dose-proportional pharmacokinetic (PK) in rat in the range of 2 to 500 mpK. JNJ-39758979 rapidly reaches the kidneys and liver (mean tmax=2.0 h). The elimination of JNJ-39758979 is slow from the brain, liver, and kidneys, with mean t1/2 values of 42.5, 22.3, and 20.5 h, respectively. The highest exposure (based on Cmax and AUC0-inf values) is observed in the liver followed by the kidney and brain. Tissue-to-plasma ratios for liver and kidney range from 23.2 to 95.8; the tissue-to-plasma ratios in brain increases with time from 0.256 to 22.7 up to 48 h after dosing. JNJ-39758979 is able to inhibit histamine-induced itch at doses of 5 and 20 mg/kg in mice. JNJ-39758979 exhibits dose-dependent inhibition of the clinical score in a mouse collagen-induced arthritis model[1].

[1]. Savall BM, et al. Discovery and SAR of 6-alkyl-2,4-diaminopyrimidines as histamine H? receptor antagonists. J Med Chem. 2014 Mar 27;57(6):2429-39.

Chemical Properties

Cas No. 1046447-90-8 SDF
Canonical SMILES NC1=NC(C(C)C)=CC(N2C[C@H](N)CC2)=N1
分子式 C11H19N5 分子量 221.3
溶解度 DMSO : 33.33 mg/mL (150.61 mM) 储存条件 4°C, protect from light
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。
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。

溶解性数据

制备储备液
1 mg 5 mg 10 mg
1 mM 4.5188 mL 22.5938 mL 45.1875 mL
5 mM 0.9038 mL 4.5188 mL 9.0375 mL
10 mM 0.4519 mL 2.2594 mL 4.5188 mL
  • 摩尔浓度计算器

  • 稀释计算器

  • 分子量计算器

质量
=
浓度
x
体积
x
分子量
 
 
 
*在配置溶液时,请务必参考产品标签上、MSDS / COA(可在Glpbio的产品页面获得)批次特异的分子量使用本工具。

计算

动物体内配方计算器 (澄清溶液)

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
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

Research Update

Phase 2a, randomized, double-blind, placebo-controlled, multicentre, parallel-group study of an H4 R-antagonist (JNJ-39758979) in adults with uncontrolled asthma

Background: The effects of H4 R antagonists in preclinical asthma models support the study of antagonists of the H4 R in the treatment of asthma in humans. JNJ-39758979 is a potent and highly selective oral H4 R antagonist. Objective: We sought to evaluate the safety and efficacy of the H4 R-antagonist JNJ-39758979 in adult patients with uncontrolled asthma. Methods: One hundred and fifteen eligible patients were randomly assigned to JNJ-39758979 300 mg or placebo once daily for 12 weeks in this phase 2a, double-blind, multicenter, placebo-controlled study. Primary efficacy was assessed via week-12 change from baseline in pre-bronchodilator forced expiratory volume in 1 second (FEV1 ). Secondary efficacy assessments included patient-reported outcome (PRO) asthma assessments (Asthma Daily Diary data [AM and PM peak expiratory flow rate, number of puffs of albuterol/salbutamol, the presence of nocturnal awakenings and asthma symptom score]). Results: The study did not meet the primary end-point. However, nominally significant improvements in pre-bronchodilator FEV1 were observed with JNJ-39758979 versus placebo at week 12 in pre-specified subgroups with elevated exhaled nitric oxide, sputum eosinophils or blood eosinophils at baseline. Nominally significant improvements across PRO assessments were consistently observed in the overall population, as well as in eosinophilic subgroups. Safety, such as adverse event rates, was comparable between JNJ-39758979 and placebo. No serious adverse events were reported. No clinically relevant changes in laboratory values were observed. Conclusions and clinical relevance: The findings suggest potential benefit of H4 R antagonists on lung function and asthma control in eosinophilic asthma patients and warrant further evaluation of this mechanism in asthma with eosinophilic inflammation. NCT00946569.

The histamine H? receptor antagonist, JNJ 39758979, is effective in reducing histamine-induced pruritus in a randomized clinical study in healthy subjects

The histamine H4 receptor (H4R) is a promising target for the treatment of pruritus. A clinical study was conducted to evaluate the safety and efficacy of the H4R antagonist, JNJ 39758979 [(R)-4-(3-amino-pyrrolidin-1-yl)-6-isopropyl-pyrimidin-2-ylamine], on histamine-induced pruritus in healthy subjects. A single oral dose of 600 mg JNJ 39758979, 10 mg cetirizine, or placebo was administered in a randomized, three-period, double-blind, crossover study. Treatment periods were separated by 22-day washout periods. A histamine challenge was administered on day -1 and at 2 and 6 hours postdose on day 1 of each treatment period. The primary efficacy endpoint was the area under the curve (AUC) of pruritus score 0-10 minutes after the histamine challenge. Secondary efficacy endpoints included wheal and flare areas assessed 10 minutes after the histamine challenge. Safety was assessed for all subjects. Of the 24 enrolled subjects, 23 individuals completed the study. One subject withdrew after completing two treatment periods. Due to a carryover effect of JNJ 39758979, only treatment period 1 was used for pruritus-related evaluations. Compared with placebo, the reduction of the AUC of pruritus score was significant for JNJ 39758979 at 2 hours (P = 0.0248) and 6 hours (P = 0.0060), and for cetirizine at 6 hours (P = 0.0417). In all treatment periods, JNJ 39758979 did not demonstrate a significant decrease in wheal or flare at either time point, although a significant reduction was achieved with cetirizine at 2 and 6 hours (P < 0.0001). Adverse eventss reported in >1 patient with JNJ 39758979 were headache (9%) and nausea (13%). In conclusion, JNJ 39758979 was effective in inhibiting histamine-induced pruritus in healthy subjects.

Clinical and preclinical characterization of the histamine H(4) receptor antagonist JNJ-39758979

The histamine H4 receptor (H(4)R) has been shown to have preclinical involvement in both inflammatory and pruritic responses. JNJ-39758979 [(R)-4-(3-amino-pyrrolidin-1-yl)-6-isopropyl-pyrimidin-2-ylamine] is a potent and selective H(4)R antagonist with a Ki at the human receptor of 12.5 ± 2.6 nM and greater than 80-fold selectivity over other histamine receptors. The compound also exhibited excellent selectivity versus other targets. JNJ-39758979 showed dose-dependent activity in models of asthma and dermatitis consistent with other H(4)R antagonists. Preclinical toxicity studies of up to 6 months in rats and 9 months in monkeys indicated an excellent safety profile, supporting the clinical testing of the compound. An oral formulation of JNJ-39758979 was studied in a phase 1 human volunteer study to assess safety, pharmacokinetics, and pharmacodynamics. The compound was well tolerated, with the exception of dose-dependent nausea, and no safety issues were noted in the phase 1 study. JNJ-39758979 exhibited good pharmacokinetics upon oral dosing with a plasma half-life of 124-157 hours after a single oral dose. In addition, dose-dependent inhibition of histamine-induced eosinophil shape change was detected, suggesting that the H4R was inhibited in vivo. In conclusion, JNJ-39758979 is a potent and selective H(4)R antagonist that exhibited good preclinical and phase 1 safety in healthy volunteers with evidence of a pharmacodynamics effect in humans.

Phase 2a, randomized, double-blind, placebo-controlled, multicenter, parallel-group study of a H4 R-antagonist (JNJ-39758979) in Japanese adults with moderate atopic dermatitis

This trial was conducted to evaluate the safety and efficacy of the H4 R-antagonist JNJ-39758979 in adult Japanese patients with moderate atopic dermatitis (AD). Eligible patients were randomly assigned to JNJ-39758979 300 mg, 100 mg or placebo once daily for 6 weeks in this phase 2a, double-blind, multicenter, placebo-controlled study. Primary efficacy was assessed via week-6 Eczema Area and Severity Index (EASI) scores. Secondary efficacy assessments included Investigator's Global Assessment (IGA) and patient-reported outcome (PRO) pruritus assessments (Pruritus Categorical Response Scale [PCRS], Pruritus Numeric Rating Scales [PNRS], Pruritus Interference Numeric Rating Scale [PINRS] and Subject's Global Impressions of Change in Pruritus [SGICP]). Eighty-eight of 105 planned patients were randomized before the study was stopped and unblinded for safety reasons. The study did not meet the primary end-point. However, numerical improvements (i.e. decreases) in median EASI were observed with JNJ-39758979 100 mg (-3.7) and 300 mg (-3.0) versus placebo (-1.3) at week 6. Nominally significant improvements across PRO PCRS, PNRS and SGICP assessments were consistently observed, particularly with JNJ-39758979 300 mg. Safety, including adverse events (AE), was comparable between JNJ-39758979 and placebo with the exception of two patients (both receiving JNJ-39758979 300 mg) with serious AE of neutropenia, leading to premature study discontinuation. No deaths were reported. Except for neutropenia, no clinically relevant changes in laboratory values were observed. Although not conclusive, findings suggest H4 R-antagonism may be beneficial for AD, particularly in controlling pruritus. JNJ-39758979 appears to be associated with drug-induced agranulocytosis, likely an off-target effect.

Clinical Development of Histamine H4 Receptor Antagonists

The discovery of the histamine H4 receptor (H4R) provided a new avenue for the exploration of the physiological role of histamine, as well as providing a new drug target for the development of novel antihistamines. The first step in this process was the identification of selective antagonists to help unravel the pharmacology of the H4R relative to other histamine receptors. The discovery of the selective H4R antagonist JNJ 7777120 was vital for showing a role for the H4R in inflammation and pruritus. While this compound has been very successful as a tool for understanding the function of the receptor, it has drawbacks, including a short in vivo half-life and hypoadrenocorticism toxicity in rats and dogs, that prevented advancing it into clinical studies. Further research let to the discovery of JNJ 39758979, which, similar to JNJ 7777120, was a potent and selective H4R antagonist and showed anti-inflammatory and anti-pruritic activity preclinically. JNJ 39758979 advanced into human clinical studies and showed efficacy in reducing experimental pruritus and in patients with atopic dermatitis. However, development of this compound was terminated due to the occurrence of drug-induced agranulocytosis. This was overcome by developing another H4R antagonist with a different chemical structure, toreforant, that does not appear to have this side effect. Toreforant has been tested in clinical studies in patients with rheumatoid arthritis, asthma, or psoriasis. In conclusions there have been many H4R antagonists reported in the literature, but only a few have been studied in humans underscoring the difficulty in finding ligands with all of the properties necessary for testing in the clinic. Nevertheless, the clinical data to date suggests that H4R antagonists can be beneficial in treating atopic dermatitis and pruritus.