Tunable and Photoswitchable Chemically Induced Dimerization for Chemo‐optogenetic Control of Protein and Organelle Positioning

• Published in: Angewandte Chemie International Edition Vol. 57; no. 23; pp. 6796 - 6799
• Main Authors: Chen, Xi, Wu, Yao‐Wen
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 04.06.2018; John Wiley and Sons Inc
• Edition: International ed. in English
• Subjects: cellular transport; chemo-optogenetics; Communication; Communications; Dimerization; HeLa Cells; Humans; Light; Localization; Optogenetics - methods; Organelles; Organelles - genetics; Organelles - metabolism; Organelles - ultrastructure; Photosensitivity; photoswitches; Protein Multimerization; Proteins; Proteins - analysis; Proteins - genetics; Proteins - metabolism; chemo-optogenetics; dimerization; photoswitches; cellular transport; proteins
• ISSN: 1433-7851; 1521-3773; 1521-3773
• DOI: 10.1002/anie.201800140

The spatiotemporal dynamics of proteins and organelles play an important role in controlling diverse cellular processes. Optogenetic tools using photosensitive proteins and chemically induced dimerization (CID), which allow control of protein dimerization, have been used to elucidate the dynamics of biological systems and to dissect the complicated biological regulatory networks. However, the inherent limitations of current optogenetic and CID systems remain a significant challenge for the fine‐tuning of cellular activity at precise times and locations. Herein, we present a novel chemo‐optogenetic approach, photoswitchable chemically induced dimerization (psCID), for controlling cellular function by using blue light in a rapid and reversible manner. Moreover, psCID is tunable; that is, the dimerization and dedimerization degrees can be fine‐tuned by applying different doses of illumination. Using this approach, we control the localization of proteins and positioning of organelles in live cells with high spatial (μm) and temporal (ms) precision. Guided by the light: Photoswitchable chemically induced dimerization (psCID), a chemo‐optogenetic approach for controlling cellular function in a rapid and reversible manner, is presented. Using psCID, the degree of dimerization and dedimerization could be fine‐tuned by applying different doses of illumination and the localization of proteins and positioning of organelles in living cells was controlled with high spatial and temporal precision.