Live Cell Imaging of Retroviral Entry: Video 1

A video from the 2014 review by Amy E. Hulme and Thomas J. Hope, "Live Cell Imaging of Retroviral Entry," from the Annual Review of Virology.

Shown: Detection of viral fusion with live cell imaging. The fusion of Tomato-Vpr/iGFP-labeled HIV-1 with CHO cells was imaged at 37°C under a blood/gas mixture of CO₂ on a DeltaVision OMX microscope. The experiment was imaged for 44 min with a Z series of images taken every 45 s. Viral fusion was observed as a decrease in GFP fluorescence after 37.5 min due to release of the fluid phase GFP marker into the cytoplasm of the cell. The Tomato-Vpr-labeled virus retained a lower amount of GFP fluorescence after fusion due to GFP localization to the interior of the capsid (Figure 1). See Figure 2 for further details.