A Novel Mitragynine Analog with Low-Efficacy Mu Opioid Receptor Agonism Displays Antinociception with Attenuated Adverse Effects.

A Novel Mitragynine Analog with Low-Efficacy Mu Opioid Receptor Agonism Displays Antinociception with Attenuated Adverse Effects.
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DOI:
10.1021/acs.jmedchem.1c01273
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发表时间:
2021-09-23
影响因子:
7.3
通讯作者:
Majumdar S
Majumdar S
中科院分区:
医学1区
文献类型:
--
作者:
Chakraborty S;DiBerto JF;Faouzi A;Bernhard SM;Gutridge AM;Ramsey S;Zhou Y;Provasi D;Nuthikattu N;Jilakara R;Nelson MNF;Asher WB;Eans SO;Wilson LL;Chintala SM;Filizola M;van Rijn RM;Margolis EB;Roth BL;McLaughlin JP;Che T;Sames D;Javitch JA;Majumdar S

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Mitragynine和7-hydroxymitragynine(7 OH)是介导精神活性植物kratom的生物作用的主要生物碱。为了研究mitragynine/7 OH模板的结构-活性关系,我们在C9、C10和C12位置使吲哚的芳环多样化,并研究它们的由μ阿片受体(莫尔)介导的G蛋白和抑制蛋白信号传导。用苯基(4)、甲基(5)或3′-呋喃基[6(SC 13)]取代基取代9-OCH 3基团的三种合成的C9先导类似物在异源G蛋白测定和突触生理学中表现出部分激动作用,其效力低于DAMGO或吗啡。在限制莫尔储备的试验中,所有三种药物的G蛋白功效与丁丙诺啡相当。6(SC 13)在小鼠中表现出MOR依赖性镇痛作用,效力与吗啡相似,没有呼吸抑制、过度运动、便秘或位置条件反射。这些结果表明,在细胞系中激活莫尔的可能性最小(G蛋白Emax <10%),同时在体内获得最大的抗伤害感受,减少阿片类药物的负债。
Mitragynine and 7-hydroxymitragynine (7OH) are the major alkaloids mediating the biological actions of the psychoactive plant kratom. To investigate the structure–activity relationships of mitragynine/7OH templates, we diversified the aromatic ring of the indole at the C9, C10, and C12 positions and investigated their G-protein and arrestin signaling mediated by mu opioid receptors (MOR). Three synthesized lead C9 analogs replacing the 9-OCH3 group with phenyl (4), methyl (5), or 3′-furanyl [6 (SC13)] substituents demonstrated partial agonism with a lower efficacy than DAMGO or morphine in heterologous G-protein assays and synaptic physiology. In assays limiting MOR reserve, the G-protein efficacy of all three was comparable to buprenorphine. 6 (SC13) showed MOR-dependent analgesia with potency similar to morphine without respiratory depression, hyperlocomotion, constipation, or place conditioning in mice. These results suggest the possibility of activating MOR minimally (G-protein Emax ≈ 10%) in cell lines while yet attaining maximal antinociception in vivo with reduced opioid liabilities.
基于carfentanyy模板的新型μ-δ阿片受体异构体性激动剂的合成和药理学。
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