Journal: STAR Protocols
Article Title: Tracking the dynamics of single fused synaptic vesicle proteins from a single ribbon active zone in zebrafish retinal bipolar cells
doi: 10.1016/j.xpro.2021.101107
Figure Lengend Snippet: High spatiotemporal resolution imaging of a single SypHy fusion events at single ribbon location in response to depolarization stimuli (A) Top : Synaptic terminals of retinal bipolar cells from transgenic zebrafish that sparsely express SypHy were voltage clamped by placing the patch pipette filled with Cy5-RBP. We generated rapid x-t line-scans at a ribbon location to obtain high spatiotemporal images of SypHy fusion events. We chose the ribbons that are sharp focused (For example 1, 2 or 5) and at the edge of the plasma membrane to generate line-scan. Bottom : x-t line-scans (white dash lines) were obtained across the ribbon, perpendicular to plasma membrane. (B) Left : Representation of a raw x-t raster plot of SypHy (green) and ribbon (red). The line-scans were obtained at 7.44 ms/line consisting of 2000-line scans. Right : TTL trigger from Patch Master computer delivered to the imaging computer to start image acquisition. In addition, horizontal-scan synch from imaging computer is delivered to Patch Master to obtain precise timing of image acquisition. Besides, voltage command, information about calcium current and capacitance measurements for each stimulus also can be obtained from Patch Master computer. (C) To enhance the SypHy fluorescence signal and optimize the SNR the same line scan in Figure 2B but averaged 2-pixels along x-axis and 5-pixels along time-axis.
Article Snippet: Horizontal electrode puller , Sutter Instrument , P-1000.
Techniques: Imaging, Transgenic Assay, Transferring, Generated, Clinical Proteomics, Membrane, Fluorescence