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125 Result(s)
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Article
Analysis of aberrant methylation of the VHL gene by transgenes, monochromosome transfer, and cell fusion
Several tumor suppressor genes were shown to be inactivated by a process involving aberrant de novo methylation of their GC-rich promoters which is usually associated with transcriptional repression. The mechanis...
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Article
Regulation of the Wilms' tumour suppressor protein transcriptional activation domain
The Wilms' tumour suppressor protein WT1 contains a transcriptional regulatory domain that can either activate or repress transcription depending upon its cellular environment. The mechanistic basis for this d...
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Article
Molecular dissection of TrkA signal transduction pathways mediating differentiation in human neuroblastoma cells
Activation of the neurotrophin receptor TrkA by its ligand nerve growth factor (NGF) initiates a cascade of signaling events leading to neuronal differentiation in vitro and might play an important role in the di...
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Article
Expression of PTEN in PTEN-deficient multiple myeloma cells abolishes tumor growth in vivo
Biochemical abnormalities associated with the development of multiple myeloma have been difficult to define especially in terms of demonstrating an in vivo effect of suspected lesions. Herein, we have identified ...
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Article
The c-Myc-interacting adaptor protein Bin1 activates a caspase-independent cell death program
Cell death processes are progressively inactivated during malignant development, in part by loss of tumor suppressors that can promote cell death. The Bin1 gene encodes a nucleocytosolic adaptor protein with t...
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Loss of B cell identity correlates with loss of B cell-specific transcription factors in Hodgkin/Reed-Sternberg cells of classical Hodgkin lymphoma
In classical Hodgkin lymphoma the malignant Hodgkin/Reed-Sternberg (HRS) cells characteristically constitute only a small minority of the tumour load. Their origin has been debated for decades, but on the basi...
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Article
Inhibition of AP-1 transcription factor causes blockade of multiple signal transduction pathways and inhibits breast cancer growth
AP-1 transcription factors play a critical role in signal transduction pathways in many cells. We have investigated the role of AP-1 in controlling proliferative signals in breast cells, and have previously sh...
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Patterns of expression of chromosome 17 genes in primary cultures of normal ovarian surface epithelia and epithelial ovarian cancer cell lines
Oligonucleotide microarray analysis was applied to assess the expression profile of 332 probe sets representing 308 genes or expressed sequence tags (ESTs) that map to chromosome 17 in order to address epigene...
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Article
Regulation of apoptosis proteins in cancer cells by ubiquitin
Ubiquitin inhibitors act at many levels to enhance apoptosis signaling. For TNF-related apoptosis-inducing ligand (TRAIL)-mediated apoptosis signaling, there are at least five mechanisms by which apoptosis are...
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Article
Microarray expression profiling in melanoma reveals a BRAF mutation signature
We have used microarray gene expression profiling and machine learning to predict the presence of BRAF mutations in a panel of 61 melanoma cell lines. The BRAF gene was found to be mutated in 42 samples (69%) and...
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Article
Hsp90–Akt phosphorylates ASK1 and inhibits ASK1-mediated apoptosis
Hsp90 client protein Akt has been shown to inhibit cell apoptosis in part by inhibiting proapoptotic kinase ASK1 (apoptosis signal-regulating kinase 1) activity. In the present study, we show that Hsp90 inhibi...
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Article
Discrimination between serous low malignant potential and invasive epithelial ovarian tumors using molecular profiling
Tumors of low malignant potential (LMP) represent 20% of epithelial ovarian cancers (EOCs) and are associated with a better prognosis than the invasive tumors (TOV). Defining the relationship between LMPs and ...
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Article
BCL3 is induced by IL-6 via Stat3 binding to intronic enhancer HS4 and represses its own transcription
BCL3 is a proto-oncogene affected by chromosomal translocations in some patients with chronic lymphocytic leukemia. It is an IκB family protein that is involved in transcriptional regulation of a number of NF-κB ...
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Article
Identification and characterization of novel AML1-ETO fusion transcripts in pediatric t(8;21) acute myeloid leukemia: a report from the Children's Oncology Group
t(8;21)(q22;q22) results in the AML1-ETO (A1E) fusion gene and is a common cytogenetic abnormality in acute myeloid leukemia (AML). Although insertions at the breakpoint region of the A1E fusion transcripts ha...
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Article
Dual-specificity phosphatase 26 is a novel p53 phosphatase and inhibits p53 tumor suppressor functions in human neuroblastoma
Chemoresistance is a major cause of treatment failure and poor outcome in neuroblastoma. In this study, we investigated the expression and function of dual-specificity phosphatase 26 (DUSP26), also known as mi...
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Article
Phosphorylation of Crk on tyrosine 251 in the RT loop of the SH3C domain promotes Abl kinase transactivation
Here, we report the identification and characterization of a novel tyrosine phosphorylation site in the carboxy-terminal Src Homology 3 (SH3) (SH3C) domain of the Crk adaptor protein. Y251 is located in the hi...
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Article
Loss of microRNA-143/145 disturbs cellular growth and apoptosis of human epithelial cancers by impairing the MDM2-p53 feedback loop
Dysregulated microRNAs (miRNAs) have an important role in many malignant tumors. However, elucidating the roles of miRNAs in cancer biology, especially in epithelial cancers, remains an ongoing process. In thi...
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Open AccessIdentification of G-protein-coupled receptor 120 as a tumor-promoting receptor that induces angiogenesis and migration in human colorectal carcinoma
G-protein-coupled receptor 120 (GPR120) functions as a receptor for unsaturated long-chain free fatty acids and has an important role in regulating lipid and glucose metabolism. However, a role for GPR120 in t...
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Open AccessPar-4/THAP1 complex and Notch3 competitively regulated pre-mRNA splicing of CCAR1 and affected inversely the survival of T-cell acute lymphoblastic leukemia cells
Although the intensification of therapy for children with T-cell acute lymphoblastic leukemia (T-ALL) has substantially improved clinical outcomes, T-ALL remains an important challenge in pediatric oncology. H...
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EphA2 promotes epithelial–mesenchymal transition through the Wnt/β-catenin pathway in gastric cancer cells
This study aims to investigate the significance of erythropoietin-producing hepatocellular (Eph)A2 expression and the mechanism by which EphA2 is involved in the epithelial–mensenchymal transition (EMT) of gas...