mao-c

HDAC6-IN-49（Compound 3）作为HDAC的抑制剂，针对HDAC6与HDAC1的IC50值分别为0.012 μM和0.735 μM。此化合物还能够抑制MAO-B、胆碱酯酶 (ChE)、组胺受体 (H3R)以及血清素6受体 (5-HT6R)。在生物学应用方面，HDAC6-IN-49对SH-SY5Y细胞展示出神经保护效果，并在果蝇的帕金森病模型与C. elegans的阿尔茨海默病模型中改善了认知功能与运动能力。

Hypericin (Cyclosan) 属于天然蒽醌类化合物，是贯叶连翘的提取物，可以抑制 PKC、MAO、多巴胺-beta-羟化酶、逆转录酶、端粒酶和 CYP等。Hypericin 具有抗菌、抗病毒、抗肿瘤和抗抑郁活性。

C5 是一种高效且选择性的MAO-B抑制剂。

N-Desbutyl dronedarone is an active metabolite of the antiarrhythmic agent dronedarone .1,2,3It is formed from dronedarone by cytochrome P450s (CYPs) and monoamine oxidase (MAO) in human hepatocyte preparations.4N-Desbutyl dronedarone inhibits the binding of 3,3’,5-triiodo-L-thyronine to the thyroid hormone receptors TRα1and TRβ1(IC50s = 59 and 280 μM for the chicken and human receptors, respectively).1It inhibits CYP2J2-mediated formation of 14,15-EET from arachidonic acid and soluble epoxide hydrolase-mediated formation of 14,15-DHET from 14,15-EET (IC50s = 1.59 and 2.73 μM, respectively, in cell-free assays).2N-Desbutyl dronedarone decreases intracellular ATP levels in H9c2 rat cardiomyocytes (IC50= 1.07 μM) and inhibits mitochondrial complex I, also known as NADH dehydrogenase, and mitochondrial complex II, also known as succinate dehydrogenase, activities in isolated rat heart mitochondria (IC50s = 11.94 and 24.54 μM, respectively).3 1.Van Beeren, H.C., Jong, W.M.C., Kaptein, E., et al.Dronerarone acts as a selective inhibitor of 3,5,3’-triiodothyronine binding to thyroid hormone receptor-α1: in vitro and in vivo evidenceEndocrinology144(2)552-558(2003) 2.Karkhanis, A., Tram, N.D.T., and Chan, E.C.Y.Effects of dronedarone, amiodarone and their active metabolites on sequential metabolism of arachidonic acid to epoxyeicosatrienoic and dihydroxyeicosatrienoic acidsBiochem. Pharmacol.146188-198(2017) 3.Karkhanis, A., Leow, J.W.H., Hagen, T., et al.Dronedarone-induced cardiac mitochondrial dysfunction and its mitigation by epoxyeicosatrienoic acidsToxicol. Sci.163(1)79-91(2018) 4.Klieber, S., Arabeyre-Fabre, C., Moliner, P., et al.Identification of metabolic pathways and enzyme systems involved in the in vitro human hepatic metabolism of dronedarone, a potent new oral antiarrhythmic drugPharmacol. Res. Perspec.2(3)e00044(2014)

MAO A HSP90-IN-2（compound 4-C）是一种针对HSP90和MAO A的双重抑制剂，显示出分别对这两种酶有0.016 μM和4.58 μM的IC50值。该化合物能够上调HSP70，降低HER2和磷酸化AKT的表达，同时能减少GL26细胞中由IFN-γ诱导的PD-L1表达增加。此外，MAO A HSP90-IN-2能够抑制对Temozolomide敏感或耐药的胶质母细胞瘤(GBM)、结肠癌、白血病和非小细胞肺癌细胞的生长，并可能有助于阻止肿瘤逃避免疫监控。

Rosiridin (6'-O-Deacetylrosiridoside C) 能够抑制 MAO A 和 MAO B，有潜在的抑郁症和老年性痴呆作用。它在 10 μM 时对 MAO B 的抑制率为 83.8% (pIC50=5.38)。