Hemipiperazines as peptide-derived molecular photoswitches with low-nanomolar cytotoxicity
作者:Susanne Kirchner、Anna-Lena Leistner、Peter Gödtel、Angelika Seliwjorstow、Sven Weber、Johannes Karcher、Martin Nieger、Zbigniew Pianowski
DOI:10.1038/s41467-022-33750-7
日期:——
Molecular photoswitches transform light energy into reversible structural changes. Their combination with known pharmacophores often allows for photomodulation of the biological activity. The effort to apply such compounds in photopharmacology as light-activated pro-drugs is, however, hampered by serious activity reduction upon pharmacophore modifications, or limited biostability. Here we report that
分子光电开关将光能转化为可逆的结构变化。它们与已知药效团的结合通常允许对生物活性进行光调制。然而,将此类化合物作为光激活前药应用于光药理学的努力受到药效团修饰后活性严重降低或生物稳定性有限的阻碍。在这里,我们报告一种有效的抗有丝分裂剂普那布林及其衍生物表现出高达 56 倍的可逆活性光调制。或者,用青光进行不可逆的光激活可以将细胞毒性提高三个数量级——所有这些都不会影响原来的活性水平,因为原来的药效团结构没有改变。这是由于普那布林支架内存在肽衍生的光开关基序半哌嗪所致。此外,我们系统地描述了这些热稳定和生物相容性半哌嗪的光致变色,以及来自普那布林的光可切换荧光团。后者可能进一步扩大半哌嗪光致变色对超分辨率显微镜的适用性。