ABSTRACT
[Objective] To investigate the molecular mechanism of miR-192/-215 targeting BIVM in human gastric cancer.[Methods] First,BIVM was the target gene of miR-192/-215 screened by the target gene prediction in solico and gene microarrays.Real-time quantitative PCR verified the results of the microarrays.Then the double-luciferase reporter plasmids were constructed to test that BIVM was the target gene of miR-192/-215.Subsequently,BIVM-siRNA was transfected,to know the effects of BIVM-siRNA on proliferation and apoptosis of gastric cancer cells.8 nude mice were randomly divided into two groups:BIVM-siRNA experimental group and NSC-siRNA control group.Gastric cancer cells transfected with BIVM-SiRNA were implanted under the skin of nude mice to observe the effect of BIVM on the tumorigenicity of gastric cancer cells.[Results] BIVM was screened as miR-192/-215 target gene by gene microarrays and quantitative PCR.Double-luciferase reporting assays were performed to identify the BIVM as miR-192/-215 target gene.The cell proliferation assays showed that BIVM promoted the proliferation of gastric cancer cells (P＜0.05).Test of flow cytometry showed that BIVM inhibited the apoptosis of gastric cancer cells (P＜0.05).Mouse tumorigenesis test confirmed that BIVM could promote gastric cancer cells growth in vivo (P＜0.05).[Conclusion] BIVM plays a role in the carcinogenesis of gastric cancer,and miR-192/-215 targeting BIVM promotes the development of gastric cancer.
ABSTRACT
<p><b>OBJECTIVE</b>To study the clinical value of optoelectronic cervical cancer screening system (TruScreen, TS) in the screening of cervical cancer in comparison with cervical cytology test.</p><p><b>METHODS</b>A total of 392 patients were screened by TS, Pap, TCT, and HPV using the pathological and colposcopical results as the golden standard. The sensitivity, specificity, Kappa value and the area of under ROC of each method and their combinations (parallel tests) were compared.</p><p><b>RESULTS</b>The sensitivity of TS, Pap, TCT and HPV were 32.2%, 42.2%, 74.4% and 47.8%, with specificity of 96.7%, 93.7%, 78.8% and 84.8% in detecting cervical cancer, respectively. The sensitivity of the parallel tests, namely TCT/HPV, TCT/TS, Pap/TS and HPV/TS were 65.6%, 87.8%, 82.2% and 86.7%, with the specificity of 81.1%, 74.5%, 75.8% and 67.2%, respectively. In light of the areas of under ROC, significant differences were noted between the parallel tests of TS/Pap and TS/TCT (P<0.05), but not between TCT/Pap and TCT/TS (P>0.05); significant differences were found between the parallel tests with TS and those without TS (P<0.05), but not between TS alone and the parallel tests incorporating TS (P>0.05), nor between the 4 parallel tests (P>0.05).</p><p><b>CONCLUSION</b>As a new modality for early screening of cervical carcinoma, TS offers a means for real-time cancer detection with better diagnostic efficacy than Pap and HPV and equivalent efficacy to TCT. The combination of TS and cytological tests can further enhance the diagnostic accuracy.</p>