title: Expression of PLK1 and survivin in diffuse large B-cell lymphoma.
abstract: Polo-like kinase 1 (PLK1) belongs to a conservative family of serine/threonine kinase and plays an important role in the process of cell cycle. Survivin is a member of inhibitor of apoptosis protein (IAP) family. We investigated the expression of PLK1 and survivin with immunohistochemical techniques in diffuse large B-cell lymphoma (DLBCL) and assessed their significance as a potent new tumor marker. The expression rate of PLK1 and survivin were 66.7% (26/39) and 82.1% (32/39), respectively. PLK1 expression correlated with systemic symptom, LDH level, IPI scores and therapeutic effect in DLBCL, while survivin did not. PLK1 expression correlated with shortened event-free survival (EFS) using the Log-rank test in DLBCL, but survivin did not. Cox regression analysis identified the independent prognostic significance for PLK1. The results suggest that there is a significant relationship between over expression of PLK1, the clinical features and survival time. Compared with survivin, PLK1 seems to be a better independent prognostic factor for DLBCL.
authors.affiliation: Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.forename: Ping
authors.initials: P
authors.lastname: Zou
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D018797:Cell Cycle Proteins / Q000378:metabolism*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D051034:Inhibitor of Apoptosis Proteins; D016403:Lymphoma, Large B-Cell, Diffuse / Q000175:diagnosis* / Q000378:metabolism* / Q000401:mortality; D008869:Microtubule-Associated Proteins / Q000378:metabolism*; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000378:metabolism*; D011379:Prognosis; D017346:Protein Serine-Threonine Kinases / Q000378:metabolism*; D011518:Proto-Oncogene Proteins / Q000378:metabolism*; D016019:Survival Analysis; D000077022:Survivin; D000097869:Polo-Like Kinase 1
chemical_list: D018797:Cell Cycle Proteins; D051034:Inhibitor of Apoptosis Proteins; D008869:Microtubule-Associated Proteins; D009363:Neoplasm Proteins; D017346:Protein Serine-Threonine Kinases; D011518:Proto-Oncogene Proteins; D000077022:Survivin; D000097869:Polo-Like Kinase 1; C107489:BIRC5 protein, human