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. 2015 Feb 12;7(3):299–314. doi: 10.15252/emmm.201404134

Figure 5.

Figure 5

NAV3 knockdown associates with altered EGFR trafficking and disoriented chemotaxis
  1. MDA-MB-231 cells, pre-treated with the indicated siRNAs, were stimulated with Alexa Fluor 488-EGF (20 ng/ml) and imaged for 25 min. Frames taken at 2 and 25 min are shown (scale bars, 10 μm; see Supplementary Movie S3).
  2. Cells were stimulated with EGF (20 ng/ml; 10 min) as in (A), acid-washed and incubated at 37°C for the indicated intervals. Thereafter, cells were detached, fixed and analyzed using imaging flow cytometry (ImageStreamX). Shown are means ± SD from three experiments.
  3. MDA-MB-231 derivatives were serum-starved and stimulated with EGF for the indicated time intervals. Whole extracts were subjected to immunoblotting as indicated.
  4. Rose plots obtained with MDA-MB-231 derivatives exposed to an EGF gradient (shown as a blue and green wedge) in chemotaxis chambers. Blue lines indicate properly oriented tracks. Histograms (mean ± SEM) show quantification of persistence and chemotactic orientation from three experiments (45 cells).