objective(s): the aim of this study was to investigate the methylation status and mrna expression levels of p15, death-associated protein kinase (dapk), and suppressor of cytokine signaling-1 (socs1) genes in multiple myeloma (mm). materials and methods: the bone marrow samples of 54 mm patients were collected and the methylation status of the p15, dapk, and socs1 gene promoter regions was dete...

In myelodysplastic syndrome (MDS), the expression of the cyclin-dependent kinase inhibitor p15(ink4B) (p15) is frequently decreased because of the aberrant methylation of the gene promoter; p15 is normally up-regulated during megakaryocytic differentiation. It was hypothesized that p15 methylation and deregulation of gene expression contribute to defective megakaryocytopoiesis in patients with ...

OBJECTIVE This study was performed to investigate the correlation between P15 methylation and hepatocellular carcinoma (HCC) and hepatocirrhosis using a meta-analysis of available case control studies. METHODS Previous studies have primarily evaluated the incidence of P15 methylation in HCC and corresponding control groups, and compared the incidence of P15 methylation in liver cirrhosis and ...

PURPOSE The cell cycle inhibitor p15(INK4b) has been localized in migrating corneal epithelial cells. In this study, TAT-fusion protein technology was used to transduce p15(INK4b) into human corneal epithelial cells to examine the effect on cell proliferation and migration. METHODS Human p15(INK4b), obtained by RT-PCR, was cloned into a TAT-HA vector, and the fusion protein was purified from ...

introduction: promoter methylation has an inhibitory effect on gene expression. thus we investigated methylation patterns of p15 gene in esophageal squamous cell carcinoma (escc), one of the most frequent and fetal cancers in the world. material and methods: p15 promoter methylation status of 30 escc and 10 normal specimens was investigated using methylation specific pcr. dna extracted from the...

In myelodysplastic syndrome (MDS), the expression of the cyclin-dependent kinase inhibitor p15ink4B (p15) is frequently decreased because of the aberrant methylation of the gene promoter; p15 is normally up-regulated during megakaryocytic differentiation. It was hypothesized that p15 methylation and deregulation of gene expression contribute to defective megakaryocytopoiesis in patients with MD...

Although numerous somatic mutations that contribute to the pathogenesis of childhood acute lymphoblastic leukemia (ALL) have been identified, no specific cytogenetic or molecular abnormalities are known to be consistently associated with relapse. The p16INK4A (p16), which encodes for both p16INK4A and p19ARF proteins, and p15INK4B (p15) genes are inactivated by homozygous deletion and/or p15 pr...

The 15,000-molecular-weight polypeptide (p15) of feline leukemia virus (FeLV) was shown to impair normal lymphocyte function in vitro and to abrogate immunity to feline oncornavirus disease in vivo. FeLVp15 suppressed concanavalin A-induced blast transformation of normal feline lymphocytes by 68%, while other virion proteins had no effect. p15 suppression was not due to toxicity, nor was p15 a ...

The p15(PAF)/KIAA0101 protein is a proliferating cell nuclear antigen (PCNA)-associated protein overexpressed in multiple types of cancer. Attenuation of p15(PAF) expression leads to modifications in the DNA repair process, rendering cells more sensitive to ultraviolet-induced cell death. In this study, we identified that p15(PAF) expression peaks during the S phase of the cell cycle. We observ...