新型脑渗透性多功能铁螯合剂-单胺氧化酶抑制剂药物M-30治疗阿尔茨海默病的治疗靶点及潜力

Therapeutic targets and potential of the novel brain- permeable multifunctional iron chelator-monoamine oxidase inhibitor drug, M-30, for the treatment of Alzheimer's disease.

作者信息

Avramovich-Tirosh Yael, Amit Tamar, Bar-Am Orit, Zheng Hailin, Fridkin Mati, Youdim Moussa B H

机构信息

Eve Topf Centers of Excellence, Technion-Rappaport Family Faculty of Medicine and Department of Pharmacology, Haifa, Israel.

出版信息

J Neurochem. 2007 Jan;100(2):490-502. doi: 10.1111/j.1471-4159.2006.04258.x. Epub 2006 Nov 27.

Abstract

Novel therapeutic approaches for the treatment of neurodegenerative disorders comprise drug candidates designed specifically to act on multiple CNS targets. We have synthesized a multifunctional non-toxic, brain permeable iron chelator drug, M-30, possessing propargyl monoamine oxidase (MAO) inhibitory neuroprotective and iron-chelating moieties, from our prototype iron chelator VK-28. In the present study M-30 was shown to possess a wide range of pharmacological activities, including pro-survival neurorescue effects, induction of neuronal differentiation and regulation of amyloid precursor protein (APP) and beta-amyloid (Abeta) levels. M-30 was found to decrease apoptosis of SH-SY5Y neuroblastoma cells in a neurorescue, serum deprivation model, via reduction of the pro-apoptotic proteins Bad and Bax, and inhibition of the apoptosis-associated phosphorylated H2A.X protein (Ser 139) and caspase 3 activation. In addition, M-30 induced the outgrowth of neurites, triggered cell cycle arrest in G(0)/G(1) phase and enhanced the expression of growth associated protein-43. Furthermore, M-30 markedly reduced the levels of cellular APP and beta-C-terminal fragment (beta-CTF) and the levels of the amyloidogenic Abeta peptide in the medium of SH-SY5Y cells and Chinese hamster ovary cells stably transfected with the APP 'Swedish' mutation. Levels of the non-amyloidogenic soluble APPalpha and alpha-CTF in the medium and cell lysate respectively were coordinately increased. These properties, together with its brain selective MAO inhibitory and propargylamine- dependent neuroprotective effects, suggest that M-30 might serve as an ideal drug for neurodegenerative disorders, such as Parkinson's and Alzheimer's diseases, in which oxidative stress and iron dysregulation have been implicated.

摘要

治疗神经退行性疾病的新型治疗方法包括专门设计用于作用于多个中枢神经系统靶点的候选药物。我们从原型铁螯合剂VK-28合成了一种多功能无毒、可透过血脑屏障的铁螯合剂药物M-30,它具有炔丙基单胺氧化酶(MAO)抑制、神经保护和铁螯合部分。在本研究中,M-30被证明具有广泛的药理活性,包括促生存神经拯救作用、诱导神经元分化以及调节淀粉样前体蛋白(APP)和β-淀粉样蛋白(Aβ)水平。在神经拯救、血清剥夺模型中,发现M-30可通过降低促凋亡蛋白Bad和Bax,抑制凋亡相关的磷酸化H2A.X蛋白(Ser 139)和半胱天冬酶3激活,从而减少SH-SY5Y神经母细胞瘤细胞的凋亡。此外,M-30诱导神经突生长,触发细胞周期停滞在G(0)/G(1)期,并增强生长相关蛋白-43的表达。此外,M-30显著降低了稳定转染APP“瑞典”突变的SH-SY5Y细胞和中国仓鼠卵巢细胞培养基中细胞APP和β-羧基末端片段(β-CTF)的水平以及淀粉样生成Aβ肽的水平。培养基和细胞裂解物中分别非淀粉样生成的可溶性APPα和α-CTF的水平相应增加。这些特性,连同其脑选择性MAO抑制和炔丙胺依赖性神经保护作用,表明M-30可能是神经退行性疾病(如帕金森病和阿尔茨海默病)的理想药物,其中氧化应激和铁失调与之相关。

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