PDZ-binding kinase (PBK/TOPK) acts as oncogene in various cancers and correlates with drug response. However, few studies have examined the expression and roles of PBK in colonrectal cancer (CRC). In this study, we found a significant increase in the expression of PBK in CRC tissues and cell lines. While overexpression of PBK promoted cell growth and decreased the toxicity effect of oxaliplatio...

Oral cancer is a common cancer with poor prognosis. We evaluated the expression of PBK/TOPK (PDZ-binding kinase/T-LAK cell-originated protein kinase) and its prognostic significance in oral cancer. PBK/TOPK expression was measured by immunohistochemical staining of samples from 287 patients with oral cancer. The association between PBK/TOPK expression and clinicopathological features was analyz...

The proliferation of pancreatic β cells is enhanced to enable an increase in β-cell mass and to compensate for insulin resistance during pregnancy. To elucidate the mechanisms involved, we previously investigated islets from pregnant and nonpregnant mice by gene expression profiling and found that the expression of postsynaptic density-95/Discs large/zonula occludens-1 (PDZ)-binding kinase (Pbk...

A serine/threonine kinase PDZ binding-kinase (PBK) is a member of the mitogen-activated protein kinase (MAPK) kinase (MAPKK) family [1-3]. This enzyme is also known under the name T-lymphokine-activated killer cell-originated protein kinase (TOPK). PBK was discovered as a factor that binds PDZ2 domain of hDLg (human homologue of the Drosophila Discs-large (Dlg) tumor suppressor protein) [2]. Th...

hDlg, the human homologue of the Drosophila Discs-large (Dlg) tumor suppressor protein, is known to interact with the tumor suppressor protein APC and the human papillomavirus E6 transforming protein. In a two-hybrid screen, we identified a 322-aa serine/threonine kinase that binds to the PDZ2 domain of hDlg. The mRNA for this PDZ-binding kinase, or PBK, is most abundant in placenta and absent ...

Deregulation of serine/threonine kinase contributes to the development and progression of human diseases. PDZ-binding kinase (PBK) has been implicated in the malignant process of cancers, but its role and clinical significance in hepatocellular carcinoma (HCC) remains unclear. Here we show that PBK expression is increased and associated with larger tumor size, presence of vascular invasion, lym...

PURPOSE To characterize the expression patterns of tenascin-C (TN-C) splice variants in normal corneas and in those affected by pseudophakic-aphakic bullous keratopathy (PBK-ABK). METHODS Alternatively spliced variants of TN-C mRNA from normal and age-matched human corneas with PBK-ABK were analyzed by semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) and Southern blot...

UNLABELLED objectives: To evaluate the expression of PBK/TOPK (PDZ-binding kinase/T-LAK cell-originated protein kinase) and its clinical significance in cervical cancer and cervical intraepithelial neoplasia. METHODS PBK/TOPK expression was detected in 28 cases of low-grade cervical intraepithelial neoplasia (CINI), 62 cases of high-grade intraepithelial neoplasia and 80 cases of cervical can...

We performed genomic subtraction coupled to microarray-based gene expression profiling and identified the PDZ (postsynaptic density-95/Discs large/zona occludens-1)-binding kinase/T-LAK (lymphokine-activated killer T cell) cell originating protein kinase (PBK/TOPK) as a gene highly enriched in neural stem cell cultures. Previous studies have identified PBK/TOPK as a mitogen-activated protein ki...

Radiotherapy represents the most effective non-surgical modality in cancer treatment. MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression, and are involved in many biological processes and diseases. To identify miRNAs that influence the radiation response, we performed miRNA array analysis using MCF7 cells at 2, 8, and 24 h post irradiation. We demonstrated that miR-770-5...