Knockdown of Cdc25B in renal cell carcinoma is associated with decreased malignant features.
Cdc25 phosphatases are important regulators of the cell cycle. Their abnormal expression detected in a number of tumors implies that their dysregulation is involved in malignant transformation. However, the role of Cdc25B in renal cell carcinomas remains unknown. To shed light on influence on renal cell carcinogenesis and subsequent progression, Cdc25B expression was examined by real-time RT-PCR and western blotting in renal cell carcinoma and normal tissues. 65 kDa Cdc25B expression was higher in carcinomas than in the adjacent normal tissues (P<0.05), positive correlations being noted with clinical stage and histopathologic grade (P<0.05). To additionally investigate the role of Cdc25B alteration in the development of renal cell carcinoma, Cdc25B siRNA was used to knockdown the expression of Cdc25B. Down-regulation resulted in slower growth, more G2/M cells, weaker capacity for migration and invasion, and induction of apoptosis in 769-P transfectants. Reduction of 14-3-3 protein expression appeared related to Cdc25B knockdown. These findings suggest an important role of Cdc25B in renal cell carcinoma development and provide a rationale for investigation of Cdc2B-based gene therapy.
Department of Urology, The First Hospital of China Medical University, Shenyang, China.
Xiu-Yue
XY
Yu
Zhe
Z
Zhang
Guo-Jun
GJ
Zhang
Kun-Feng
KF
Guo
Chui-Ze
CZ
Kong
D048948:14-3-3 Proteins / Q000096:biosynthesis; D017209:Apoptosis; D002292:Carcinoma, Renal Cell / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D059447:Cell Cycle Checkpoints; D045744:Cell Line, Tumor; D002465:Cell Movement; D049109:Cell Proliferation; D015536:Down-Regulation; D006801:Humans; D007680:Kidney Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D034622:RNA Interference; D034741:RNA, Small Interfering; D020687:cdc25 Phosphatases / Q000235:genetics* / Q000502:physiology*
D048948:14-3-3 Proteins; D034741:RNA, Small Interfering; C482982:YWHAB protein, human; C517008:CDC25B protein, human; D020687:cdc25 Phosphatases