Fig. 2.
KLF7 loss inhibits PDAC tumor growth and metastasis. (A) Representative images of soft agar colonies of PDAC cell lines expressing either NS or KLF7 shRNAs. (Scale bar: 500 μm.) (B) Average colony size of the data shown in A. (C) PDAC cell lines expressing NS or KLF7 shRNAs were injected s.c. into athymic nude mice (n = 5) and analyzed for tumor formation. The average tumor volumes at the indicated time points are shown. (D) Firefly luciferase-labeled PANC1 cells expressing NS or KLF7 shRNAs were injected into mice via the tail vein (n = 5). Representative bioluminescence images taken 1 wk and 4 wk after injection are shown. (E) Quantitation of bioluminescence in the mice at the indicated time points. (F) Representative images of hematoxylin and eosin-stained lung sections from the week 4 groups shown in D. (G) Relative size of metastatic nodules in week 4 lungs with Firefly luciferase-labeled PANC1 cells expressing KLF7 shRNA compared with the NS shRNA-expressing metastatic nodules that were considered 100%. Data are shown as mean ± SEM. *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001.