糖化诱导的度依赖性变化对白蛋白结构和其结合能力的改变的影响
Kailas Sonpasare1, Dimple S Lalchandani1, Laltanpuii Chenkual1
1Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research-Guwahati (NIPER-G), Guwahati, Assam, India.
Journal of biomolecular structure & dynamics
|February 21, 2024
概括
牛血清白蛋白 (BSA) 通过糖的非酶性糖化改变了其结构和药物结合性质. 失控的糖尿病可能会因为这些糖化效应而加剧卡巴马西平 (CBZ) 度变化.
科学领域:
- 生物化学 生物化学
- 频谱学是一种光谱学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 非酶性糖化是糖尿病的一个关键过程,它改变了蛋白质的结构和功能.
- 血清白蛋白是糖化的主要标,影响其在药物运输中的作用.
- 了解糖化诱导的白蛋白变化对于管理糖尿病患者的药物疗效至关重要.
研究的目的:
- 为了研究由葡萄糖,甘氨酸和甲基甘氨酸诱导的牛血清白蛋白 (BSA) 的结构变化.
- 评估糖化对BSA与特定药物的结合相互作用的影响.
- 阐明糖化诱导的蛋白质结构和药物结合的改变的潜在临床影响.
主要方法:
- 用葡萄糖,甘氨酸和甲基甘氨酸化BSA.
- 频谱分析包括FT-IR,光,紫外线和循环二极化 (CD) 光谱.
- 使用华法林和卡巴马西平 (CBZ) 进行超过和LC-MS/MS的药物取代研究.
主要成果:
- 糖化诱导了BSA的显著构造变化,包括减少α-螺旋和增加β-片含量.
- 光火模式因糖化剂而异 (葡萄糖的动态,酸/甲基酸的静态).
- 用酸盐的BSA糖化显著改变了CBZ的结合,而葡萄糖和甲基酸盐的影响很小.
结论:
- 糖化严重破坏了白蛋白的二级结构,影响其与药物的相互作用.
- 格里奥克萨尔诱导的BSA修饰显著影响卡巴马西结合.
- 由于糖化相关的蛋白质变化,CBZ的血清度变化可能会在不受控制的糖尿病中恶化.
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