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Randomly (n = 6 per group) for each cell line (A549/H1299/H1650). All cells were tripsinized and resuspended with 100 mL of PBS (containing 50 mL Matrigel) respectively and subcutaneously injected into the axilla of eachFlow Cytometric AnalysisFlow cytometric analysis was taken to detect the apoptosis and cell cycle status. The cells were harvested, washed twice, and resuspended in 100 mL of PBS containing 3 mL of annexin V and 3 mL of PI (KeyGen, China) according to the manufacturer’s recommendation. The apoptosis data acquisition and analysisWT1 Promotes NSCLC Cell ProliferationFigure 5. WT1 up-regulates the expression of Cyclin D1 and p-pRb in vivo. A, Immunohistochemical staining of WT1, p-STAT3 (s727), Cyclin D1 and p-pRb in WT1 overexpressed (WT1) tumor tissues and WT1 down-regulated (WT1-shRNA) tumor tissues in vivo. Average value of integrated optical density (IOD) was obtained as described above, demonstrated that the expression of Cyclin D1 and p-pRb was significantly up-regulated. B,WT1 Promotes NSCLC Cell ProliferationWestern-blotting analysis of expression of WT1, STAT3, p-STAT3 (S727 and Y705), Cyclin D1, p-pRb in indicated tumors. GAPDH was used as a loading control. Data are represented as mean6SD. *P,0.05. doi:10.1371/journal.pone.0068837.gnude mouse (56106 cells per mouse). One week after injection, tumors dimensions were measured every 4 days and after one month all mice were sacrificed and tumors were obtained (Figure S2). The volume was calculated using following formula: volume = length6width260.5.software NIS-Elements v4.0. Average values of integrated optical density (IOD) were obtained from five random fields per slide by using Image-Pro Plus software (v5.0). Every 1315463 data was detected three times at least.Statistical Analysis ImmunohistochemistryTissues were fixed in 4 paraformaldehyde and cut from paraffin block to 5 mm thickness. After dewaxing with xylene and rehydration with a graded series of ethanol, the slides were heated in the autoclave for three minutes using citrate buffer (PH 6.0) and incubated with primary antibody WT1(1:100, 6F-H2, Millipore, USA), p-STAT3 (1:400, Cell Signalling Technology, Beverly, MA, USA), Cyclin D1 (1:50, Santa Cruz Biotechnology, Delaware Avenue, CA, USA) and p-pRb (1:100,Cell Signaling Technology, Beverly, MA, USA) at 4uC Madrasin site overnight. Blocking serum or antibody dilution buffer were prepared as Negative controls. The primary antibodies utilized were all the same as for Western blot analysis. Photographs were taken by microcope (Nikon, ECLIPSE 50i) and Data was presented as mean6SD based on three separated experiments. The Student’s t-test, ANOVA and two-sided Fisher exact test was used to evaluate the statistical significance of differences in all Anlotinib custom synthesis pertinent experiments. A value of P,0.05 was considered as statistical significance, and P,0.001 was considered highly significant. All statistical analyses were analyzed using the SPSS program v17.0 (SPSS, Chicago, IL, USA).Figure 6. WT1 enhances the expression of Cyclin D1 and p-pRb in NSCLC specimens. Immunohistochemical staining of WT1, p-STAT3 (s727), Cyclin D1 and p-pRb in WT1 overexpression (Case 1) tumor 23977191 tissues and WT1 low expression (Case 2) tumor tissues in vivo. Average value of integrated optical density (IOD) was obtained as described above, demonstrated that the expression of Cyclin D1 and p-pRb was significantly upregulated. Data are represented as mean6SD. *P,0.05. doi:10.1371/journal.pone.0068837.gWT1 Promotes NSCLC.Randomly (n = 6 per group) for each cell line (A549/H1299/H1650). All cells were tripsinized and resuspended with 100 mL of PBS (containing 50 mL Matrigel) respectively and subcutaneously injected into the axilla of eachFlow Cytometric AnalysisFlow cytometric analysis was taken to detect the apoptosis and cell cycle status. The cells were harvested, washed twice, and resuspended in 100 mL of PBS containing 3 mL of annexin V and 3 mL of PI (KeyGen, China) according to the manufacturer’s recommendation. The apoptosis data acquisition and analysisWT1 Promotes NSCLC Cell ProliferationFigure 5. WT1 up-regulates the expression of Cyclin D1 and p-pRb in vivo. A, Immunohistochemical staining of WT1, p-STAT3 (s727), Cyclin D1 and p-pRb in WT1 overexpressed (WT1) tumor tissues and WT1 down-regulated (WT1-shRNA) tumor tissues in vivo. Average value of integrated optical density (IOD) was obtained as described above, demonstrated that the expression of Cyclin D1 and p-pRb was significantly up-regulated. B,WT1 Promotes NSCLC Cell ProliferationWestern-blotting analysis of expression of WT1, STAT3, p-STAT3 (S727 and Y705), Cyclin D1, p-pRb in indicated tumors. GAPDH was used as a loading control. Data are represented as mean6SD. *P,0.05. doi:10.1371/journal.pone.0068837.gnude mouse (56106 cells per mouse). One week after injection, tumors dimensions were measured every 4 days and after one month all mice were sacrificed and tumors were obtained (Figure S2). The volume was calculated using following formula: volume = length6width260.5.software NIS-Elements v4.0. Average values of integrated optical density (IOD) were obtained from five random fields per slide by using Image-Pro Plus software (v5.0). Every 1315463 data was detected three times at least.Statistical Analysis ImmunohistochemistryTissues were fixed in 4 paraformaldehyde and cut from paraffin block to 5 mm thickness. After dewaxing with xylene and rehydration with a graded series of ethanol, the slides were heated in the autoclave for three minutes using citrate buffer (PH 6.0) and incubated with primary antibody WT1(1:100, 6F-H2, Millipore, USA), p-STAT3 (1:400, Cell Signalling Technology, Beverly, MA, USA), Cyclin D1 (1:50, Santa Cruz Biotechnology, Delaware Avenue, CA, USA) and p-pRb (1:100,Cell Signaling Technology, Beverly, MA, USA) at 4uC overnight. Blocking serum or antibody dilution buffer were prepared as Negative controls. The primary antibodies utilized were all the same as for Western blot analysis. Photographs were taken by microcope (Nikon, ECLIPSE 50i) and Data was presented as mean6SD based on three separated experiments. The Student’s t-test, ANOVA and two-sided Fisher exact test was used to evaluate the statistical significance of differences in all pertinent experiments. A value of P,0.05 was considered as statistical significance, and P,0.001 was considered highly significant. All statistical analyses were analyzed using the SPSS program v17.0 (SPSS, Chicago, IL, USA).Figure 6. WT1 enhances the expression of Cyclin D1 and p-pRb in NSCLC specimens. Immunohistochemical staining of WT1, p-STAT3 (s727), Cyclin D1 and p-pRb in WT1 overexpression (Case 1) tumor 23977191 tissues and WT1 low expression (Case 2) tumor tissues in vivo. Average value of integrated optical density (IOD) was obtained as described above, demonstrated that the expression of Cyclin D1 and p-pRb was significantly upregulated. Data are represented as mean6SD. *P,0.05. doi:10.1371/journal.pone.0068837.gWT1 Promotes NSCLC.

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