双间隔的结构-活性关系及其应用作为抗体-药物结合的有效载荷
Mark E Petersen1, Michael G Brant1, Manuel Lasalle1
1ADC Therapeutic Development, Zymeworks Inc., Vancouver, BC V5T 1G4, Canada.
Journal of medicinal chemistry
|June 12, 2023
概括
研究人员开发了基于DNA双插曲的新型抗体药物合物 (ADC) 有效载荷. 特定部位的结合ADC在体内表现出卓越的疗效和耐受性,提供了一个有前途的癌症治疗方法.
科学领域:
- 药用化学 医学化学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 抗体药物合物 (ADC) 是一种新兴的向癌症治疗药物.
- 像桑德拉米和金纳尔多佩这样的天然产品显示DNA二次插曲活性.
- 开发具有有利的物理化学性质的有效ADC有效载荷仍然是一个挑战.
研究的目的:
- 合成和表征新型合成类比的桑德拉米辛和金纳尔多佩用于ADC有效载荷.
- 评估采用这些新有效载荷的ADCs的体外和体内性能.
- 通过链接器修改和有效载荷掩盖策略来改善ADC属性.
主要方法:
- 合成和生物物理特征34个新型二次插曲的类同类.
- 药物链接器有效载荷与抗体的结合,包括提高溶解度和有效载荷掩盖的策略.
- 在不同抗原表达水平的细胞系中进行体外细胞毒性测定.
- 在体内有效性和毒性研究使用随机和特定位点结合的ADC.
主要成果:
- 成功合成了34种新的双间隔类同类物.
- 最初的ADC合物表现出疏水性和聚合问题,通过链接器修改和有效载荷掩盖来解决.
- 所有的ADC在体外对高抗原表达细胞表现出强烈的细胞毒性.
- 蒙面ADCs在低抗原表达细胞中显示出较低的功效,与没有蒙面的对应物相比.
- 随机结合的ADCs (anti-FRα) 在体内表现出毒性,而特定部位结合的THIOMAB ADCs (anti-cMet) 耐受性良好且高度有效.
结论:
- 合成的双插曲类型可作为强大的ADC有效载荷.
- 涉及链接器修改和有效载荷掩盖的策略可以调节ADC属性.
- 特定部位的结合对于开发耐受性良好和有效的ADCs至关重要,THIOMAB技术证明了这一点.
- 为了改善治疗结果,需要进一步优化ADC设计.
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