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Liu C.,Nanjing Southeast University | Tao T.,Nanjing Southeast University | Xu B.,Nanjing Southeast University | Lu K.,Nanjing Southeast University | And 7 more authors.
Oncology Letters | Year: 2015

B-cell translocation gene 1 (BTG1) is a member of the BTG/transducer of Erb family. BTG1 regulates cell cycle progression, inhibits proliferation, promotes apoptosis and stimulates cellular differentiation in multiple cell types. However, the functions of BTG1 in renal cell carcinoma (RCC) remain unclear. Therefore, the present study investigated the role of BTG1 in RCC tissue samples and 786-O RCC cells. RCC tissues and cells exhibited significantly weaker BTG1 protein and mRNA expression compared with para-carcinoma control tissues (P<0.05). Upregulated BTG1 expression induced significant G0/G1 cell cycle arrest, apoptosis and inhibition of cell proliferation in 786-O cells (P<0.05). Furthermore, BTG1 interacted with protein arginine N-methyltransferase 1 (PRMT1), and blocking the action of PRMT1 in 786-O cells resulted in inhibition of BTG1 function. These findings indicate that BTG1 may inhibit cell growth and promote apoptosis by interacting with PRMT1 in RCC; the identification of this mechanism may aid in the production of novel therapies for RCC. © 2015, Spandidos Publications. All rights reserved. Source


Lu Y.,Haimen City Peoples Hospital | Huang S.,Haimen City Peoples Hospital | Li P.,Haimen City Peoples Hospital | Chen B.Y.,Haimen City Peoples Hospital | And 3 more authors.
Experimental and Therapeutic Medicine | Year: 2015

The aim of the present study was to evaluate correlations between preoperative C-reactive protein (CRP) serum concentration and the clinical-pathological parameters of epithelial ovarian cancer (EOC), as well as cancer antigen 125 (CA125) concentration, in patients with EOC. The preoperative serum CRP concentrations of 107 patients with EOC were compared with values of 44 control patients and defined as positive if values were >8 mg/l. Correlations between CRP expression and serum CA125 concentrations, International Federation of Gynecologists and Obstetricians (FIGO) staging, lymph node metastasis, ascites and size of postoperative residual lesions were evaluated for the EOC cases. A total of 69% (74/107) of the EOC cases were CRP-positive, with a mean serum CRP concentration of 14.32 mg/l (versus 2.18 mg/l in the control patients) (P<0.001). A rank correlation analysis showed a positive correlation between serum CRP and CA125 concentrations (P<0.001). The five-year survival rate of the CRP-positive patients with EOC was significant lower than that of the patients that were CRP-negative (33.3 vs. 75.8%, P<0.001). Non-parametric and multivariate analyses showed significant correlations between CRP concentrations and FIGO staging (P=0.001), lymph node metastasis (P=0.001) and ascites (P=0.033). In contrast to previous reports, the mean CRP serum concentration of the CRP-positive patients with EOC also correlated significantly with the CA125 values, and the increases in the CRP serum concentration in the Chinese patients were lower than those described for Caucasian EOC cases. In conclusion, the CRP serum concentration may be a useful clinical marker, solely or in combination with CA125, in patients with EOC. © 2015 EXPERIMENTAL AND THERAPEUTIC MEDICINE All rights reserved. Source

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