Structural Re-engineering of the α-Helix Mimetic JY-1-106 into Small Molecules: Disruption of the Mcl-1-Bak-BH3 Protein-Protein Interaction with 2,6-Di-Substituted Nicotinates
作者:Brandon Drennen、Jacob A. Scheenstra、Jeremy L. Yap、Lijia Chen、Maryanna E. Lanning、Braden M. Roth、Paul T. Wilder、Steven Fletcher
DOI:10.1002/cmdc.201500461
日期:2016.4.19
with significantly decreased molecular weights. The most potent inhibitor 2‐(benzyloxy)‐6‐(4‐chloro‐3,5‐dimethylphenoxy)nicotinic acid (1 r: Ki=2.90 μm) likely binds in the p2 pocket of Mcl‐1 and engages R263 in a salt bridge through its carboxylic acid, as supported by 2D 1H–15N HSQC NMR data. Significantly, inhibitors were easily accessed in just four steps, which will facilitate future optimization
与合成剂的异常蛋白-蛋白相互作用(PPI)的破坏仍然是当代药物化学中一个具有挑战性的目标,但已经取得了一些进展。一种这样失调的PPI是抗凋亡Bcl-2蛋白(包括髓样细胞白血病-1(Mcl-1))与其促凋亡对应物的α-螺旋Bcl-2同源3(BH3)域之间的关系,例如Bak。本文中,我们描述了基于新型化学型的Mcl-1癌蛋白小分子抑制剂的发现。特别是,将我们的α-螺旋模拟物JY-1-106改造为2,6-二取代的烟酸酯可提供具有相当效价的抑制剂,但分子量却明显降低。最有效的抑制剂2-(苄氧基)-6(4-氯-3,5-二甲基苯氧基)烟酸(1 r:K我= 2.90μ米)可能结合在MCL-1的口袋P2和通过其羧酸盐桥接合R263,由2D所支持的1 H- 15 ñHSQC NMR数据。重要的是,只需四个步骤即可轻松获得抑制剂,这将有助于将来的优化工作。