摘要
背景:阿尔茨海默症(AD)发病机制主要特征为淀粉样β(Aβ)肽的产生和累积。随着对神经型退行性疾病及其病理生理学机制的认识,发展有效的靶向抗Aβ疗法对AD的管理是必不可少的。全球正在尝试发现大量针对Aβ生成、毒性和清除的疗法。首要的需要是设计出能在生理学环境下减缓Aβ积聚过程的抑制剂。贝沙罗丁(抗肿瘤药)是美国FDA第一个批准能口服的X受体-选择性类维生素A类视黄醇,或维甲酸类。它在治疗晚期或难治的皮肤T细胞淋巴瘤十分有效,而且据报道,它能减少AD大鼠模型的Aβ水平。贝沙罗丁通过调节阿普脂蛋白E(ApoE)的生成来促进细胞内Aβ的清除。 目的:就我们所知,这是第一个从结构上尝试寻找贝沙罗丁和单体Aβ肽的相互结合作用。 方法:我们通过结构生物信息学方法尝试了贝沙罗丁的所有结合可能。 结果:我们发现Aβ肽的基本氨基酸组氨酸13和赖氨酸16对贝沙罗丁的相互作用起关键作用。 结论:我们推测贝沙罗丁与游离Aβ的直接结合可能会降低脑内游离Aβ的浓度,并抑制肽的聚集行为倾向。进一步研究确认此次研究成果能否治疗成功。
关键词: 阿尔茨海默症,淀粉样β肽,贝沙罗丁,对接,相互作用
Current Alzheimer Research
Title:Possible Molecular Interactions of Bexarotene - A Retinoid Drug and Alzheimer's Aβ Peptide: A Docking Study
Volume: 14 Issue: 3
Author(s): Zeenat Mirza, Mohd Amin Beg.
Affiliation:
关键词: 阿尔茨海默症,淀粉样β肽,贝沙罗丁,对接,相互作用
摘要: Background: Alzheimer’s disease (AD) pathogenesis is primarily hallmarked by the production and accumulation of amyloid beta (Aβ) peptide. Along with the understanding of the neurodegenerative disease progression and its pathophysiological mechanisms, development of anti-Aβ targeted effective therapeutics is essential for AD management. Numerous therapeutic approaches targeting the production, toxicity and removal of Aβ are being attempted worldwide. Prime need is to design inhibitors which can slow down the Aβ aggregation process in a physiological environment. Bexarotene (targretin) is the first of the U.S. Food and Drug Administration approved oral retinoid X receptors (RXR)-selective retinoids, or rexinoids. It is effectively used for the treatment of advanced, refractory cutaneous T cell lymphoma, and also reportedly reduces Aβ levels in AD mouse models. Administration of bexarotene facilitates intracellular Aβ clearance via RXR regulated apolipoprotein E (ApoE) production.
Objective: To the best of our knowledge, this is the first structural attempt to find binding interactions of the drug bexarotene with monomeric Aβ peptide. Method: We checked binding possibilities of bexarotene by using structural bioinformatics method. Results: We found in our study the basic amino acids His13 and Lys 16 of Aβ peptide to be crucial for the interaction with bexarotene. Conclusion: We speculate that direct binding of bexarotene to free Aβ peptide may lessen the concentration of free Aβ peptides in the brain and hamper the propensity of the peptide’s clumping and aggregating behavior. Further experimental validation of the results of this study would be required for its therapeutic success.Export Options
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Cite this article as:
Zeenat Mirza, Mohd Amin Beg. , Possible Molecular Interactions of Bexarotene - A Retinoid Drug and Alzheimer's Aβ Peptide: A Docking Study, Current Alzheimer Research 2017; 14 (3) . https://dx.doi.org/10.2174/1567205013666161114115344
DOI https://dx.doi.org/10.2174/1567205013666161114115344 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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