选择性和口服可用的galectin-1抑制剂的发现
Fredrik R Zetterberg1, Carl Diehl2, Maria Håkansson2
1Galecto Biotech AB, Sahlgrenska Science Park, Medicinaregatan 8 A, SE-413 46 Gothenburg, Sweden.
Journal of medicinal chemistry
|December 7, 2023
概括
研究人员发现了新的口服可用的化合物,这些化合物向了加勒-1. 这些强大的加列-1抑制剂,如GB1490,在小鼠中显示出高亲和力,特异性和优异的口服生物利用性.
科学领域:
- 药用化学 医学化学
- 生物化学 生化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 银蛋白是一种 β-银酸结合蛋白家族,涉及各种生物过程.
- 选择性向加勒素,特别是加勒素-1,对于涉及免疫调节和细胞增殖的疾病是一种有前途的治疗策略.
- 之前的努力集中在加勒-3选择性抑制剂上,需要开发针对加勒-1的新型支架.
研究的目的:
- 发现和描述新的,口服可用的α-d-galactopyranosides与高亲和力和特异性为 galectin-1.
- 为了优化化合物的体外药理动力学特性.
- 在临床前模型中评估化合物的治疗潜力,GB1490.
主要方法:
- 合成和结构修改α-d-galactopyranosides,用基于 thiazole 的异环取代 aryl-triazolyl 替代剂.
- 在体外生化测试以确定结合亲和力 (Kd) 和选择性,针对一组加勒.
- 在体外的药物动力学分析和基于细胞的测试,以评估细胞亡逆转和细胞毒性.
- 进行X射线结晶学,以阐明GB1490与 galectin-1 的结合方式.
- 在小鼠体内进行体内药理动力学研究,以确定口服生物可用性.
主要成果:
- 发现了一系列新的口服可用的α-d-galactopyranosides,具有强烈的 galectin-1 抑制作用.
- 化合物GB1490表现出高亲和力 (Kd = 0.4μM) 和对加勒-1的选择性超过加勒-3 (Kd = 2.7μM),在其他加勒中选择性从6倍到320倍不等.
- 在低μM度下,GB1490在Jurkat细胞中逆转了加列-1-诱导的亡,但在A549细胞中没有表现出细胞毒性.
- 用小鼠进行的药理动力学研究显示,GB1490的口服生物可用性异常高 (F%>99%).
结论:
- 新型α-d-galactopyranosides代表了一类有前途的口服可用的 galectin-1 抑制剂.
- GB1490是一种高度强效和选择性的加勒-1抑制剂,具有良好的体外和体外药理动力学特性.
- GB1490需要进一步研究作为加勒-1介导疾病的潜在治疗剂.
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