PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19157634-4 2009 In this study, we characterize the role of celecoxib in the cytotoxicity, ERK1/2 activation and Rad51 expression affected by gefitinib in NSCLC cells. Celecoxib 43-52 mitogen-activated protein kinase 3 Homo sapiens 74-80 19157634-8 2009 Furthermore, blocking ERK1/2 activation by U0126 (MKK1/2 inhibitor) and knocking down Rad51 expression by transfection with small interfering RNA of Rad51 can enhance the cytotoxicity of celecoxib. Celecoxib 187-196 mitogen-activated protein kinase 3 Homo sapiens 22-28