نتایج جستجو برای: p15 gene
تعداد نتایج: 1142253 فیلتر نتایج به سال:
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To investigate if the cooperation between the Rgr oncogene and the inactivation of INK4b (a CDK inhibitor), as described previously in a sarcoma model, would be operational in a lymphoid system in vivo, we generated a transgenic/knockout murine model. Transgenic mice expressing the Rgr oncogene under a CD4 promoter were crossed into a p15(INK4b)-deficient background. Unexpectedly, mice with a c...
c-MYC stimulates cell proliferation through the suppression of cyclin-dependent kinase (CDK) inhibitors including P15 (CDKN2B) and P21 (CDKN1A). It also activates E-box-mediated transcription of various target genes including telomerase reverse transcriptase (TERT) that is involved in cellular immortality and tumorigenesis. Transforming growth factor-beta 1 (TGF-β1)-stimulated clone 22 (TSC-22/...
The fact that the p16/INK4a and p15/INK4b genes are frequently inactivated in human malignancies and that p16/INK4a null mice spontaneously develop B-cell lymphomas prompted us to examine the status of both genes in Burkitt's Lymphoma (BL). We found a low frequency of p16/INK4a and p15/INK4b deletions and mutations in BL cell lines and biopsies. However, p16/INK4a exon 1 was methylated in 17 ou...
CDKN2B (INK4B), which encodes the cyclin-dependent kinase inhibitor p15(INK4b), is up-regulated by many cytokines found in hematopoietic environments in vivo. In human acute myeloid leukemias (AMLs), it is inactivated with high frequency. To gain insight into the regulatory pathways leading to the normal activation of p15(Ink4b) expression, we examined interferon beta (IFNbeta)-induced transcri...
PURPOSE Aberrant promoter methylation, an alternative mechanism for gene silencing, is frequently detected in gastric cancer. We studied the feasibility of detecting aberrant methylation in serum of gastric cancer patients. EXPERIMENTAL DESIGN Patients (54) with gastric adenocarcinoma were studied. The tumor and the paired serum were examined for aberrant methylation in DAP-kinase, E-cadherin...
Microcystin-leucine arginine (MC-LR) is a harmful cyanotoxin produced by cyanobacteria. MC-LR can exert endocrine-disrupting activities in many organisms. We have previously demonstrated that MC-LR exerts both acute and chronic reproductive toxicity in male mice, resulting in a decline in sperm quality and damage to testicular structure. Moreover, we also observed extensive alterations in a pan...
Low-grade follicle center lymphoma (LGFCL) is characterized genetically by the t(14;18) translocation and an indolent clinical course. Histologic progression from LGFCL to an aggressive diffuse large B-cell lymphoma (DLCL) occurs in 60% to 80% of cases, and this transformation is associated with the accumulation of secondary genetic alterations. Using 10 polymorphic microsatellite markers spann...
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