An Antibody Uptake Assay for Imaging Notch/DeltaD Signaling in Zebrafish Radial Glia Progenitors
Published: April 30, 2024
Abstract
Source: Zhao, X. et al., Antibody Uptake Assay for Tracking Notch/Delta Endocytosis During the Asymmetric Division of Zebrafish Radial Glia Progenitors. J. Vis. Exp. (2023)
This video demonstrates an antibody uptake assay to image Notch/DeltaD signaling in zebrafish radial glia progenitors. It involves mounting agarose-embedded dechorionated zebrafish embryos, injecting a dye solution targeting DeltaD ligands on RGPs, and imaging under a fluorescence microscope for asymmetric cell division confirming Notch/DeltaD signaling activation.
Protocol
1. Preparation of zebrafish embryos Set up fish crossing tanks in the afternoon before 5:00 p.m., with one female wild-type fish and one male Tg [ef1a:Myr-Tdtomato] fish by using dividers to separate them in each tank. Remove the dividers before 11:00 a.m. from all crossing tanks the next morning. Keep quiet and do not disturb the fish while they are mating. Spawning typically occurs within 30 min after removing the dividers. The fertilized eggs remain on the bott…
Representative Results
Figure 1: Flowchart of experimental steps. Transgenic zebrafish expressing the MyR-Tdtomato reporter are outcrossed with AB wild-type on day 1. On day 2, red fluorescent embryos are selected for microinjection, followed by time-lapsing imaging. The whole experiment on the 2nd day takes about 8 h.
開示
The authors have nothing to disclose.
Materials
| 35mm glass bottom culture dish | MatTek corporation | P35GC-1.5-10-C | |
| Air pressure injector | Narishige | IM300 | |
| Anti-Mouse-IgG-Atto647N | Sigma-Aldrich | 50185 | |
| CaCl2.2H2O | Sigma-Aldrich | C3306 | |
| Capillaries, 1.2 mm OD, 0.9 mm ID, with filament | World Precision Instruments | 1B120F-6 | |
| CSU-W1 Spinning Disk/High Speed Widefield | Nikin | N/A | Nikon Ti inverted fluorescence microscope with CSU-W1 large field of view confocal. |
| Dumont Medical Tweezers Style 5 | Thomas Scientific | 72877-D | |
| Flaming-Brown P897 puller | Sutter Instruments | N/A | https://www.sutter.com/manuals/P-97-INT_OpMan.pdf |
| KCl | Millipore | 529552 | |
| MgSO4.7H2O | Sigma-Aldrich | M2773 | |
| Micromanipulators | World Precision Instruments | WPI M3301R | |
| Mouse anti-Dld | Abcam | AB_1268496 | |
| Mouse IgG blocking buffer from Zenon | Thermofisher Scientific | Z25008 | |
| NaCl | Sigma-Aldrich | S3014 | |
| Phenol red | Sigma-Aldrich | P0290 | |
| Stemi 2000 | Zeiss | N/A | |
| Tricaine | Sigma-Aldrich | E10521 | |
| UltraPureTM low melting point agarose | Invitrogen | 16520050 |
