bioimagesUnknownhttps://www.ebi.ac.uk/biostudies/studies/S-BIAD1429bioimagesSpecimenStudy ComponentorganisationBiosampleAssociationsImage acquisitionTatsuya TagofalseRudLOV—a new optically synchronized cargo transport method reveals unexpected effect of dynasoreLive imaging of secretory cargoes is a powerful method for understanding the mechanisms of membrane trafficking. Inducing the synchronous release of cargoes from an organelle is key for enhancing microscopic observation. We developed an optical cargo-releasing method, ‘retention using dark state of LOV2’ (RudLOV), which enables exceptional spatial, temporal, and quantity control during cargo release. A limited amount of cargo-release using RudLOV successfully visualized cargo cisternal-movement and cargo-specific exit sites on the Golgi/trans-Golgi network. Moreover, by controlling the timing of cargo-release using RudLOV, we revealed canonical and non-canonical effects of the well-known dynamin inhibitor dynasore, which inhibits early- but not late-Golgi transport and exits from the trans2024-10-25T00:00:00Z2024-10-25T07:55:52.673Z2024-10-25T07:55:52.673ZS-BIAD1429