Objective:To observe the effect of liver kinase B1/serine-threonine kinase 11(LKB1)on the progression of prostate cancer by studying the expression of LKB1,transforming growth factor-β1(TGF-β1)in prostate cancer tissues and cells. Methods:Two cell lines(normal prostatic epithelial cell line RWPE-1,prostatic carcinoma cell lines PC-3)were detected by SP method,RT-PCR and Western blot in order to detect the expression of LKB,TGF-β1 m RNA and protein on human prostatic hyperplasia and prostate cancer tissues. ...