来自仙人掌的沙素及其对粉样β聚合的抑制作用
Koji Fujihara1, Hiroaki Sasaki1, Shin Koike2
1Department of Pharmacognosy and Phytochemistry, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, Tokyo, 204-8588, Japan.
Journal of natural medicines
|February 7, 2026
概括
来自Stenocereus eruca和Polaskia chichipe的新型沙番素被确定. 虽然大多数都显示出有限的活性,但化合物7弱抑制了粉样β (Aβ) 聚合,而化合物8对神经母细胞瘤细胞提供了轻微的保护.
科学领域:
- 自然产品化学 自然产品化学
- 药理学 药理学是指药理学的学科.
- 神经科学是一个神经科学.
背景情况:
- 仙人掌家族的植物,包括Stenocereus eruca和Polaskia chichipe,是生物活性化合物的来源.
- 粉样β (Aβ) 聚合与阿尔茨海默氏症等神经退行性疾病有关.
- 神经保护剂旨在对抗神经细胞中Aβ诱导的毒性.
研究的目的:
- 从Stenocereus eruca和Polaskia chichipe中分离和表征新的沙素.
- 评估这些新型沙素在抑制Aβ聚合方面的潜力.
- 评估这些氨酸对SH-SY5Y神经母细胞瘤细胞对Aβ毒性的保护作用.
主要方法:
- 使用染色学技术分离氨酸.
- 通过高分辨率质谱和广泛的核磁共振 (NMR) 实验 (1D和2D NMR) 阐明结构.
- 在体外测定Aβ聚合抑制和SH-SY5Y细胞的神经保护.
主要成果:
- 隔离和结构性表征了11种新的氨酸:七种来自S. eruca (1-7) 和四种来自P. chichipe (8-11).
- 萨波宁7在100μM时表现出对Aβ聚合的弱抑制活性.
- 没有任何化合物对SH-SY5Y细胞表现出显著的保护作用,尽管氨酸8显示出非常微弱的保护作用.
结论:
- 这项研究描述了来自两种种类型的新型香素,并初步评估了它们的神经保护潜力.
- 特定基基 (C-16,C-22,C-30) 的乙化可能在抑制Aβ聚合和神经保护方面发挥作用.
- 需要进一步的研究来探索结构-活性关系,并优化这些氨酸的治疗潜力.
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