Melatonin
(Synonyms: 褪黑素; N-Acetyl-5-methoxytryptamine) 目录号 : GC15618
An indoleamine neurohormone that entrains circadian rhythms
Cas No.:73-31-4
Sample solution is provided at 25 µL, 10mM.
Melatonin is a hormone made by the pineal gland that can activates melatonin receptor. Melatonin plays a role in sleep and possesses important antioxidative and anti-inflammatory properties[1][2][3]. Melatonin is a novel selective ATF-6 inhibitor and induces human hepatoma cell apoptosis through COX-2 downregulation[4].
Melatonin increases the levels of activated PTEN, RSK-1, mTOR and AMPKα kinases, mildly inhibits ERK-1/2 phosphorylation and Bad phosphorylation, significantly inhibits phosphorylations of S6 Ribosomal Protein, 4E-BP1, GSK-3α and GSK-3β, and slightly increases PRAS40 phosphorylation in animals[1]. Melatonin ameliorates the neurotoxiciy and astrocyte activation induced by Aβ1-42 in the cerebral cortex. Melatonin also blocks the reduction in Reelin and Dab1 expression induced by Aβ1-42[2]. Melatonin treatment and lack of NLRP3-/- share similar inhibition of NF-κB and NLRP3 signaling pathway in mice. Melatonin treatment and lack of NLRP3-/- share some patterns of clock genes expression, and improve cardiomyocytes morphology in mice[3].
References:
[1]. Kilic U, et al. Particular phosphorylation of PI3K/Akt on Thr308 via PDK-1 and PTEN mediates melatonin's neuroprotective activity after focal cerebral ischemia in mice. Redox Biol. 2017 Apr 5;12:657-665
[2]. Hu C, et al. Neuroprotective effect of melatonin on soluble Aβ1-42-induced cortical neurodegeneration via Reelin-Dab1 signaling pathway. Neurol Res. 2017 Apr 7:1-1
[3]. Rahim I, et al. Melatonin administration to wild-type mice and non-treated NLRP3 mutant mice share similar inhibition of the inflammatory response during sepsis. J Pineal Res. 2017 Mar 31
[4]. Bu LJ, et al. Melatonin, a novel selective ATF-6 inhibitor, induces human hepatoma cell apoptosis through COX-2 downregulation. World J Gastroenterol. 2017 Feb 14;23(6):986-998.
褪黑激素是由松果体产生的一种激素,可以激活褪黑激素受体。褪黑素在睡眠中发挥作用,具有重要的抗氧化和抗炎特性[1][2][3]。褪黑素是一种新型选择性ATF-6抑制剂,通过下调COX-2诱导人肝癌细胞凋亡[4]。
褪黑素可增加动物体内活化的PTEN、RSK-1、mTOR和AMPKα激酶的水平,轻度抑制ERK-1/2磷酸化和Bad磷酸化,显著抑制S6核糖体蛋白、4E-BP1、GSK-3α和GSK-3β的磷酸化,并轻微增加PRAS40磷酸化[1]。褪黑素可改善Aβ1-42在大脑皮层诱导的神经毒性和星形胶质细胞活化。褪黑素还阻断Aβ1-42诱导的Reelin和Dab1表达的减少[2]。褪黑素治疗和缺乏NLRP3-/-对小鼠NF-κB和NLRP3信号通路的抑制作用相似。褪黑素治疗和缺乏NLRP3-/-共享一些时钟基因表达模式,并改善小鼠心肌细胞形态[3]。
Animal experiment: |
A total of two sets of adult male C57BL/6j mice weighing 21-26 g are randomly assigned to one of four groups and treated with intraperitoneal (i.p.) delivery of (i) vehicle (50 μL isotonic saline/5% ethanol), (ii) melatonin (4 mg/kg, dissolved in 0.9% isotonic saline/5% ethanol), (iii) Wortmannin, and (iv) melatonin/Wortmannin immediately after reperfusion. In the first set, mice are exposed to 30 min of focal cerebral ischemia (FCI) and 72 h reperfusion for the evaluation of disseminate ischemic injury in the striatum, and signaling pathway analysis (n=7 per group). The second group of mice is exposed to 90 min of FCI and 24 h reperfusion for the analysis of infarct development, brain swelling and IgG extravasation (n=7 per group). |
References: [1]. Kilic U, et al. Particular phosphorylation of PI3K/Akt on Thr308 via PDK-1 and PTEN mediates melatonin's neuroprotective activity after focal cerebral ischemia in mice. Redox Biol. 2017 Apr 5;12:657-665 |
Cas No. | 73-31-4 | SDF | |
别名 | 褪黑素; N-Acetyl-5-methoxytryptamine | ||
化学名 | N-[2-(5-methoxy-1H-indol-3-yl)ethyl]acetamide | ||
Canonical SMILES | CC(=O)NCCC1=CNC2=C1C=C(C=C2)OC | ||
分子式 | C13H16N2O2 | 分子量 | 232.28 |
溶解度 | ≥ 100mg/mL in DMSO; ≥ 100mg/mL in Ethanol | 储存条件 | Store at -20°C |
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1 mg | 5 mg | 10 mg |
1 mM | 4.3051 mL | 21.5257 mL | 43.0515 mL |
5 mM | 0.861 mL | 4.3051 mL | 8.6103 mL |
10 mM | 0.4305 mL | 2.1526 mL | 4.3051 mL |
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- Purity: >98.50%
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