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- CSA, Gale, Proquest, Nature, and Ovid from 2003
Ansamycins exert their effects by binding heat shock protein 90 (Hsp90) and targeting important signalling molecules for degradation via the proteasome pathway. We wanted to study the effect of geldanamycin (GA) and its derivative 17-allylamino-17-demethoxygeldanamycin (17-AAG) on glioblastoma c...
Estrogen and its receptor alpha (ERalpha) have been implicated in the tissue-specific tumorigenesis associated with BRCA1 mutations. However, the majority of breast cancers developed in human BRCA1 mutation carriers are ERalpha-negative, challenging the link between BRCA1 and estrogen/ERalpha in...
The chromosomal translocation t(2;13), characteristic for the aggressive childhood cancer alveolar rhabdomyosarcoma (aRMS), generates the chimeric transcription factor PAX3/FKHR with a well known oncogenic role. However, the molecular mechanisms mediating essential pathophysiological functions r...
Vascular endothelial growth factor (VEGF) production by stromal fibroblasts plays an important role in tumor angiogenesis. However, VEGF is also expressed by normal tissue fibroblasts, raising the question of how the VEGF activity of fibroblasts is regulated. Here we report that the latent VEGF ...
FDH (10-formyltetrahydrofolate dehydrogenase) is strongly downregulated in tumors while its elevation suppresses proliferation of cancer cells and induces p53-dependent apoptosis. We have previously shown that FDH induces phosphorylation of p53 at Ser6, which is a required step in the activation...
Cyclin-dependent kinase 1 (CDK1) plays a crucial role in establishing metaphase and has also been shown to prevent DNA re-replication. Cyclins B1 and B2 are two known activators of CDK1 operating during mitosis in human cells. Little is known about the specific roles of each of these cyclins in ...
MUC4 is a transmembrane mucin, which is aberrantly expressed in pancreatic adenocarcinoma with no detectable expression in the normal pancreas. Here, we present a novel mechanism of IFN-gamma-induced expression of MUC4 in pancreatic cancer cells. Our studies highlight the upregulation of STAT-1 ...
Multiple mechanisms of dysregulation of receptor tyrosine kinases (RTKs) are observed in human cancers. In addition to gain-of-function, loss of negative regulation also contributes to oncogenic activation of RTKs. Negative regulation of many RTKs involves their internalization and degradation i...
The AML1 transcription factor complex is the most frequent target of leukemia-associated chromosomal translocations. Homeodomain-interacting protein kinase 2 (HIPK2) is a part of the AML1 complex and activates AML1-mediated transcription. However, chromosomal translocations and mutations of HIPK...
The ubiquitin-specific protease HAUSP is a critical component of the p53-Mdm2 pathway by acting as a specific deubiquitinase for both p53 and Mdm2. Recent structural studies have indicated that p53 and Mdm2 bind to the N-terminal TRAF-like domain of HAUSP in a mutually exclusive manner. To under...