Journal: Cells
Article Title: Genetically Engineered Lung Cancer Cells for Analyzing Epithelial–Mesenchymal Transition
doi: 10.3390/cells8121644
Figure Lengend Snippet: ( A ) mCardinal fluorescence of the dim-VRCs population transfected with active SNAI1 or proTGFβ plasmids. The fluorescence of the cells was measured after 24 h (control – filled circles, proTGFβ – filled squares, active SNAI1 – filled triangles) and 48 h (control – filled inverted triangles, proTGFβ – filled rhomboids, active SNAI1 – circles) of culture after sorting. The points correspond to the fluorescence of a selected ROI, whereas the lines show mean fluorescence. The fluorescence changes were considered statistically significant in comparison to the control group: * p ≤ 0.05 (Mann–Whitney test). ( B ) mCardinal and ( C ) VIM relative quantification (RQ) by qPCR. VIM and mCardinal genes were measured in transfected dim-VRCs 24 (proTGFβ – filled inverted triangles, active SNAI1 – filled squares) or 48 h (proTGFβ – filled rhomboids, active SNAI1 – filled circles) after transfection. dim-VRCs represented as circles, bright-VRCs represented as filled triangles. The data shows mean 2 –ΔΔCT relative to GAPDH. The results were normalized to the control, which was pUC18-transfected dim-VRCs. The graph shows the representative result of the measurement, which was performed in triplicate. ( D ) Relative quantification of CDH1 by qPCR. CDH1 levels were measured in proTGFβ transfected dim-VRCs 24 (proTGFβ – filled inverted triangles) or 48 h (proTGFβ – filled rhomboids) after transfection. The graph shows mean RQ 2 –ΔΔCT ± SEM relative to GAPDH. The results were normalized to the control, which was pUC18-transfected dim-VRCs 48 h after transfection. The graph shows the representative result of the measurement, which was performed in triplicate. dim-VRCs represented as circles, bright-VRCs represented as filled triangles. ( E ) Immunostaining of E-cadherin and ( F ) mCardinal fluorescence in VRCs and HT29 E-cadherin positive cells by flow cytometry. VRCs control—VRCs transfected with pUC18 vector; VRCs OVOL2—OVOL2-overexpressing cells 24 h after transfection. Immunostained untransfected HT29 cells were used as controls. The graph shows the single reads as well as the mean value of three independent experiments. Statistical significance in comparison to control group is represented by asterisks: * p ≤ 0.05; ** p ≤ 0.01; *** p ≤ 0.001. VRCs control represented as filled circles, VRCs OVOL2 represented as filled triangles, HT29 represented as filled inverted triangles.
Article Snippet: For functional experiments in H2170 knocked-in cells, we used (FLAG) Snail 6SA (active Snail) plasmid, which was a gift from Mien-Chie Hung (Addgene plasmid # 16221) [ ], TGFB1-bio-His (proTGFβ), which was a gift from Gavin Wright (Addgene plasmid # 52185) [ ], and HA-OVOL2 (OVOL2)-expressing plasmid, which was a gift from Changwon Park [ ].
Techniques: Fluorescence, Transfection, MANN-WHITNEY, Immunostaining, Flow Cytometry, Plasmid Preparation