02
Dec
== (A) Western blot shows reduction in Chk2 expression using SiRNA specific to Chk2 (SiChk2) and scrambled siRNA (SiScrb) as control in stable clones generated in 1437R lung cancer cell line. kinase activity than does treatment with cisplatin alone and can activate Chk2 in pleural metastases tumor xenograft in mice. Activated Chk1 and Chk2 increase the expression of cell cycle checkpoint proteins, including Cdc25A and Cdc25C, leading to higher levels of G2/M arrest in tumor cells treated with NPRL2 and cisplatin than in tumor cells treated with cisplatin only. Our results therefore suggest that ectopic expression of NPRL2 activates the…