Figure 4. Effects of HER2 overexpression on invasive properties of Aldelfuor-positive and -negative populations of breast cancer cell lines.
Aldefluor-positive populations from Sum159-DsRed, SUM159-HER2 (A), MCF7-DsRed or MCF7-HER2 cells (B) showed significantly higher invasiveness compared to Aldefluor-negative populations. Furthermore, HER2 overexpression resulted in a 5 to 6-fold increase in the invasive potential of Aldefluor-positive cells.