Pien Tze Huang Inhibits the Biological Behavior of Tongue Squamous Carcinoma Tca8113 Cells / 中国医科大学学报

Objective To investigate the effects of Pien Tze Huang on the biological behavior of tongue squamous carcinoma Tca8113 cells and its molecular mechanism.Methods Tca8113 cells were incubated with Pien Tze Huang at different doses.The proliferation of Tca8113 cells was examined by MTT assay.The distribution of the cell cycle was evaluated by PI staining.The expression of the p-STAT3 and Bcl-2 proteins was assessed by Western blotting.Results MTT assay showed that Pien Tze Huang inhibited the proliferation of Tca8113 cells in a dose-dependent manner.PI staining showed that Pien Tze Huang arrested cells in the G0/G1 phase.The results of Western blotting suggested that Pien Tze Huang inhibited STAT3 protein phosphorylation and Bcl-2 protein expression.Conclusion Pien Tze Huang inhibits the proliferation of tongue squamous carcinoma cells.

The effects of potassium channel blocker 4-AP on the proliferation of human tongue squamous cell carcino-ma Tca8113 cells / 实用口腔医学杂志

Objective:To study the effects of a potassium channel blocker 4-Amino pyridine(4-AP)on the proliferation of human tongue squamous cell carcinoma Tca8113 cells.Methods:CCK-8 assay was used to detect the proliferation of Tca8113 cells cultured with 4-AP at the concentration of 1,5,10,20,50 and 100 mmol/L for 12,24 and 48 h respectively,the cell proliferation inhibition rate was calculated,the cell cycle distribution was examined by flow cytometry.Data were analyzed by SPSS19.0 software.Results:With the increase of 4-AP concentration and culture time,cells showed some morphologic changes.4-AP at 5 -100 mmol/L dose and time dependently inhibited the proliferation,with 24 h exposure dose dependenty decreased S-phase population and increased G0 /G1 phase population of Tca8113 cells.Conclusion:4-AP may inhibit Tca8113 cell proliferation by regulation of the cell cycle distribution.

Construction of epithelial membrane protein 1 eukaryotic expression vector and its influence on migration and invasion of human oral tongue squamous carcinoma cells / 华西口腔医学杂志

<p><b>OBJECTIVE</b>This study aimed to construct a eukaryotic expression vector pEGFP-N1-EMP1 of epithelial mem-brane protein 1 (EMP1) and investigate its influence on migration and invasion of human oral tongue squamous carcinoma cells.</p><p><b>METHODS</b>The human EMP1 gene was amplified by reverse transcription polymerase chain reaction and then ligated into the pEGFP-N1 vector by double restriction endonuclease digestion to construct pEGFP-N1-EMP1 recombinant plasmid. After sequencing identification, pEGFP-N1-EMP1 recombinant plasmid and pEGFP-N1 plasmid were transfected into human oral tongue squamous carcinoma Tb3.1 cell line. The expression of green fluorescent protein in cells was observed after transfection using an inverted fluorescence microscope. The overexpression of EMP1 mRNA was identified at 24, 48, and 72 h after transfection by real-time fluorescence quantitative polymerase chain reaction. The effect of EMP1 overexpression on migration and invasion of Tb3.1 cells was detected by Transwell assay.</p><p><b>RESULTS</b>The full-length EMP1 gene sequence was successfully obtained. Sequence analysis showed that the EMP1 gene was inserted into the pEGFP-N1 vector correctly. Green fluorescence was observed in the transfected cells under fluorescence microscopy. The results of real-time fluorescence quantitative polymerase chain reaction indicated that the expression of EMP1 at 24 h after pEGFP-N1-EMP1 transfection was significantly higher than the other groups. Transwell assays indicated that overexpression of the EMP1 gene could significantly inhibit the migration and invasion ability of Tb3.1 cells.</p><p><b>CONCLUSIONS</b>The eukaryotic expression vector of EMP1 was successfully constructed, and EMP1 overexpression was confirmed to inhibit the migration and inva-sion of oral tongue squamous carcinoma cells in vitro. This study laid a foundation for further investigation on the influence of the EMP1 gene on the metastasis of oral tongue squamous carcinoma and its molecular mechanism.
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NOD2 up-regulates the autophagy and inhibites the proliferation and migration of SCC-1 5 cells / 实用口腔医学杂志

Objective:To investigate the affects of NOD2 on rapamycin (Rap)induced autophagy and on the proliferation and mi-gration of tongue squamous carcinoma SCC-1 5 cells.Methods:① Synthesized NOD2 over-expression plasmid and NOD2-shRNA were transfected into SCC-1 5 cells respectively.②Normal control SCC-1 5 cells,NOD2 over-expression cells and NOD2-shRNA cells were treated with Rap to induce autophagy.Then,the expression of LC3 and Beclin-1 was examined by Western blot.Cell pro-liferation was tested by MTT assay.Cell migration was assessed by wound healing assay.Results:①After Rap treatment,the expres-sion of protein LC3-Ⅱand Beclin-1 in NOD2 over-expression cells increased(P <0.05)and in NOD2-shRNA cells were suppressed (P <0.05).② Compared with control group,the proliferation and migration ability were decreased in NOD2 over-expression cells (P <0.05),but in NOD2-shRNA cells the proliferation and migration ability were increased(P <0.05).Conclusion:NOD2 can up-regulate the autophagy and suppress the proliferation and migration of tongue squamous SCC-1 5 cells.

Expressions of C-Met and HGF in tongue squamous cell carcinoma and their clinical significance / 西安交通大学学报(医学版)

ABSTRACT:Objective To study the expressions of C-Met and hepatocyte growth factor (HGF)in tongue squamous cell carcinoma and their clinical significance.Methods We analyzed 46 patients (the treatment group) with tongue squamous carcinoma and 27 patients (the control group)with benign tumor treated in our hospital between June 201 1 and May 2013.The expressions of C-Met and HGF were detected by immunohistochemistry. Results In the experimental group,C-Met negative expression rate was 21.7% (10/46),weak positive expression rate was 26.1% (12/46),and strong positive expression rate was 52.2% (24/46).The above expression rates were 77.8% (21/27),1 5.8% (5/27),and 3.7% (1/27)in the control group.The two groups differed significantly (P <0.001).In the experiment group,the negative expression of HGF protein was 1 7.4% (8/46 ),weak positive expression rate was 58.7% (27/46),and strong positive expression rate was 23.9% (1 1/46).The above expression rates in the control group was 63.0% (1 7/27 ),37.0% (10/27 ),and 0.0% (0/27 ).The two groups differed significantly (P <0.001).The expression of C-Met protein was significantly related to lymph node metastasis (P <0.05).The expression of HGF protein was significantly related to pathological grading and lymph node metastasis (P <0.05).Conclusion The expressions of C-Met and HGF in tongue squamous cell carcinoma are significantly higher.And the occurrence and development of tongue squamous cell carcinoma are closely related to the expressions of C-Met and HGF.