1. Juxtaposition of GFP-Rab1b with IRES-containing RNA.
Juxtaposition of GFP-Rab1b with IRES-containing RNA. (A) Overview of the RNA–protein localization protocol. Representative images of RNA-FISH assays conducted with HeLa cells cotransfected with plasmid expressing GFP-Rab1b (B), or GFP-Rab1b DN (C) and IRES-luc mRNA, or cap-luc mRNA. Triplicate experiments were conducted side by side. The cells were fixed 30 h post-transfection, permeabilized, and incubated with the probe targeting the luciferase-coding region (white signals on the left panels). Cell nucleus was stained with DAPI. White squares denote images enlarged on the right panels (bar = 10 μm; crop image, 5 μm). White arrows denote examples of IRES-luc colocalizing with GFP-Rab1b in transfected cells. Same symbols are used for GFP-Rab1b DN. For completeness, cap-luc RNA is also marked with white arrows. Quantification of the RNA–protein juxtapositioning according to Manders’ coefficient M1 is shown on the right panel (n = 60). P values for Rab1b and Rab1b DN with RNA IRES-luc: P = and RNA cap-luc: P = P values for IRES-luc and cap-luc in cells cotransfected with Rab1b or Rab1b DN: P = , P = 0.470, respectively.
Javier Fernandez-Chamorro et al. LSA 2019;2:e
© 2019 Fernandez-Chamorro et al.