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English Abstract
Journal Article
[Study on the expression of TRIP13 mRNA in chronic lymphocytic leukemia B lymphocyte and the molecular mechanism of TRIP13 mediated JVM-2 cell proliferation and apoptosis].
Zhonghua Xue Ye Xue za Zhi = Zhonghua Xueyexue Zazhi 2017 July 15
Objective: To investigate the clinical significance of expression level of thyroid hormone receptor interactors 13 (TRIP13) gene to probe its function and downstream molecular mechanism in chronic lymphocytic leukemia (CLL) . Methods: Real-time quantitative PCR method was used to detect the expression levels of TRIP13 mRNA of CD19(+) B lymphocytes in 30 cases of patients with CLL and 12 cases of peripheral blood hematopoietic stem cell donors (normal control group) . Lentivirus mediated shRNA was used to interference the mRNA and TRIP13 protein in CLL cells JVM-2. Scramble sequence was used as control. Methyl thiazolyl tetrazolium colorimetric assay (MTT) and flow cytometry was used to detect the cell proliferation and apoptosis in TRIP13 knocked-down and negative control JVM-2 cells. Results: TRIP13 mRNA level was significantly higher in 30 cases of CLL patients (2(-△Ct)= 0.014 89) compared with 12 healthy donors (2(-△Ct)= 0.000 19) ( P <0.001) . Validated TRIP13 shRNA target was achieved in JVM2 cell. Compared with the control group, down-regulation of TRIP13 expression could significantly inhibit the proliferation of JVM-2 cells and induce apoptosis. The expressions of Myc and Bcl-2 protein in JVM-2 cells decreased significantly after interference with TRIP13 ( P <0.001) , and the expressions of Bax, caspase 3 and Bad protein increased significantly ( P <0.001) . Conclusion: TRIP13 mRNA significantly over-expressed in CLL patients CD19(+) B lymphocytes. TRIP13 could influence JVM2 cell proliferation and apoptosis through proliferation- and apoptosis-related proteins.
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