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1g |
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体外研究 (In Vitro) |
在重组系统中,VU0364770 充当 mGlu4 的选择性正变构调节剂。多个信号通路的强 PAM VU0364770 可增加大鼠和人类 mGlu4 受体对内源性激动剂谷氨酸的敏感性。 VU0364770 将谷氨酸的最大反应从 100% 提高到 227±17%,并导致对 EC20 浓度的谷氨酸的反应呈浓度依赖性增强,EC50 为 1.1±0.2 μM。由于担心该化学支架可能具有 MAO 活性,因此对 VU0364770 的 MAO-A 和 MAO-B 亚型进行了完整的 IC50 测定;这些研究得出的人 MAO-A 和人 MAO-B 的 Ki 值分别为 8.5 和 0.72 μM。当在每个 mGlu 受体上以 10 μM 浓度进行测试时(与10 μM 时 mGlu4 的谷氨酸浓度响应左移 16.5 倍)。当以全浓度-反应曲线形式进一步评估时,VU0364770 显示出对 mGlu5 的拮抗剂活性,效力为 17.9±5.5 μM,对 mGlu6 的 PAM 活性,效力为 6.8±1.7 μM(与 VU0364770 对大鼠 mGlu4 受体的效力进行比较) 290±80}M)[1]。
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体内研究 (In Vivo) |
在动物模型中,VU0364770 显示出适合全身给药的药代动力学特征。 VU0364770 的分布容积为 2.92 L/kg,静脉注射后迅速离开体循环 (165 ml/min/kg)。高度蛋白质结合的配体 VU0364770 在大鼠和人血浆中的游离分数分别为 1.8% 和 2.7%。全身给药 10 mg/kg 剂量后,与之前报道的 mGlu4 PAM 相比,VU0364770 还表现出更好的药代动力学特征,具有更大的中枢渗透性和超过 1 的总脑血浆比。氟哌啶醇诱发的强直性癫痫发作是VU0364770 以剂量依赖性方式逆转。皮下注射后(F6,69=8.04;p<0.001)[1]。
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参考文献 |
分子式 |
C12H9CLN2O
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分子量 |
232.67
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精确质量 |
232.04
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CAS号 |
61350-00-3
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相关CAS号 |
VU0364770 hydrochloride;1414842-70-8
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PubChem CID |
836002
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外观&性状 |
Light yellow to yellow solid powder
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LogP |
3.371
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tPSA |
45.48
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氢键供体(HBD)数目 |
1
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氢键受体(HBA)数目 |
2
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可旋转键数目(RBC) |
2
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重原子数目 |
16
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分子复杂度/Complexity |
247
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定义原子立体中心数目 |
0
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InChi Key |
SUYUTNCKIOLMAJ-UHFFFAOYSA-N
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InChi Code |
InChI=1S/C12H9ClN2O/c13-9-4-3-5-10(8-9)15-12(16)11-6-1-2-7-14-11/h1-8H,(H,15,16)
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化学名 |
N-(3-chlorophenyl)pyridine-2-carboxamide
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别名 |
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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 |
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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) |
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溶解度 (体内实验) |
配方 1 中的溶解度: ≥ 2.5 mg/mL (10.74 mM) (饱和度未知) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。
例如,若需制备1 mL的工作液,可将100 μL 25.0 mg/mL澄清DMSO储备液加入到400 μL PEG300中,混匀;然后向上述溶液中加入50 μL Tween-80,混匀;加入450 μL生理盐水定容至1 mL。 *生理盐水的制备:将 0.9 g 氯化钠溶解在 100 mL ddH₂O中,得到澄清溶液。 配方 2 中的溶解度: ≥ 2.5 mg/mL (10.74 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。 例如,若需制备1 mL的工作液,可将 100 μL 25.0 mg/mL 澄清 DMSO 储备液加入到 900 μL 玉米油中并混合均匀。 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 | 4.2979 mL | 21.4897 mL | 42.9793 mL | |
5 mM | 0.8596 mL | 4.2979 mL | 8.5959 mL | |
10 mM | 0.4298 mL | 2.1490 mL | 4.2979 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) 。
VU0364770 is a potent and effective PAM of mGlu4. A and B, VU0346770 exhibits a potency of 1.1 ± 0.2 μM at human mGlu4 in the presence of an EC20 concentration of glutamate (A) and shifts the glutamate concentration-response curve 31.4 ± 4.0-fold to the left (B). C and D, VU0364770 exhibits a potency of 290 ± 80 nM at rat mGlu4 (C) and induces an 18.1 ± 1.7-fold left shift of the glutamate concentration-response curve (D). Data were previously presented in tabular form (Engers et al., 2009).[1]The metabotropic glutamate receptor 4-positive allosteric modulator VU0364770 produces efficacy alone and in combination with L-DOPA or an adenosine 2A antagonist in preclinical rodent models of Parkinson's disease. J Pharmacol Exp Ther td> |
Selectivity profile of VU0364770 among family A, B, and C GPCRs. A 10 μM concentration of VU0364770 was applied to cells expressing various GPCRs; VU0364770 induced no response when applied alone (data not shown). A subsequent addition of a full agonist concentration-response curve for each receptor allowed measurement of potential PAM or antagonist activity. The potency observed in the presence of VU0364770 was divided by the potency in the absence of compound. For values in which this number was below 1, indicating a left shift of agonist potency, the following calculation was performed: (1/[potency of agonist + VU0364770/potency of agonist − VU0364770]), and the inverse of this value was plotted for ease of identifying antagonists (positive numbers indicating right shift of the agonist curve in the presence of compound) or potentiators/PAMs (negative numbers indicating left shift of the agonist curve in the presence of compound). As an example, the dose ratio calculated by the presence of compound/absence of compound for mGlu4 was 0.06. This value was divided into 1 to give 16.7, and the inverse of this number, −16.7, was plotted onto the graph. Representative examples of family A GPCRs tested are shown (A) as well as all tested family B and C GPCRs .[1]The metabotropic glutamate receptor 4-positive allosteric modulator VU0364770 produces efficacy alone and in combination with L-DOPA or an adenosine 2A antagonist in preclinical rodent models of Parkinson's disease. J Pharmacol Exp Ther td> |
The mGlu4 PAM VU0364770 produces a dose-dependent reversal of haloperidol (0.75 mg/kg i.p.)-induced catalepsy in rats. A, for comparison, the effects of VU0364770 were compared with a top dose of a previously published A2A antagonist from Neurocrine. B, in contrast, the structural analog VU0364772 (inactive at mGlu4in vitro) had no effect across the dose range tested on haloperidol-induced catalepsy. Catalepsy was measured as the latency to withdraw the forepaws from a horizontal bar with a cutoff of 30 s. Bar graphs represent the means ± S.E.M. of 10 to 12 rats/treatment group. **, p < 0.05 versus the vehicle control group by Dunnett's test. VEH, vehicle.[1]The metabotropic glutamate receptor 4-positive allosteric modulator VU0364770 produces efficacy alone and in combination with L-DOPA or an adenosine 2A antagonist in preclinical rodent models of Parkinson's disease. J Pharmacol Exp Ther. td> |