Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, China.
University of Chinese Academy of Sciences, Beijing, 100039, China.
Nat Commun. 2018 Mar 23;9(1):1209. doi: 10.1038/s41467-018-03617-x.
As a powerful tool for chemical biology, bioorthogonal chemistry broadens the ways to explore the mystery of life. In this field, transition metal catalysts (TMCs) have received much attention because TMCs can rapidly catalyze chemical transformations that cannot be accomplished by bio-enzymes. However, fine controlling chemical reactions in living systems like bio-enzymes is still a great challenge. Herein, we construct a versatile light-controlled bioorthogonal catalyst by modifying macroporous silica-Pd with supramolecular complex of azobenzene (Azo) and β-cyclodextrin (CD). Its catalytic activity can be regulated by light-induced structural changes, mimicking allosteric regulation mechanism of bio-enzymes. The light-gated heterogeneous TMCs are important for in situ controlling bioorthogonal reactions and have been successfully used to synthesize a fluorescent probe for cell imaging and mitochondria-specific targeting agent by Suzuki-Miyaura cross-coupling reaction. Endowing the bioorthogonal catalyst with new functions is highly valuable for realizing more complex researches in biochemistry.
作为化学生物学的有力工具,生物正交化学拓宽了探索生命奥秘的途径。在这个领域中,过渡金属催化剂(TMCs)受到了广泛关注,因为 TMCs 可以快速催化生物酶无法完成的化学反应。然而,像生物酶一样精细控制生物体系中的化学反应仍然是一个巨大的挑战。在此,我们通过用超分子偶氮苯(Azo)和β-环糊精(CD)修饰介孔硅-Pd 构建了一种多功能的光控生物正交催化剂。其催化活性可以通过光诱导的结构变化来调节,模拟生物酶的别构调节机制。这种光控异相 TMCs 对于原位控制生物正交反应非常重要,并已成功用于通过 Suzuki-Miyaura 偶联反应合成荧光探针用于细胞成像和线粒体靶向。赋予生物正交催化剂新的功能对于实现更复杂的生物化学研究具有重要价值。
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