Mutational analysis of genes p14ARF, p15INK4b, p16INK4a, and PTEN in human nervous system tumors

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Mutational analysis of genes p14ARF, p15INK4b, p16INK4a, and PTEN in human nervous system tumors.

Cancer is one of the most common and severe problems in clinical medicine, and nervous system tumors represent about 2% of the types of cancer. The central role of the nervous system in the maintenance of vital activities and the functional consequences of the loss of neurons can explain how severe brain cancers are. The cell cycle is a highly complex process, with a wide number of regulatory p...

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Effect of 5-aza-2′-deoxycytidine on p16INK4a, p14ARF, p15INK4b Genes Expression, Cell Viability, and Apoptosis in PLC/PRF5 and MIA Paca-2 Cell Lines

Background: Mammalian cell division is regulated by a complex includes cyclin-dependent kinases (Cdks) and cyclins, Cdk/cyclin complex. The activity of the complex is regulated by Cdk inhibitors (CKIs) compressing CDK4 (INK4) and CDK-interacting protein/kinase inhibitory protein (CIP/KIP) family. Hypermethylation of CKIs has been reported in various cancers. DNA methyltransferase inhibitors (DN...

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Diagnostic Accuracy of Squash Preparations in Central Nervous System Tumors

Background & Objectives: The accurate assessment of the diseased tissue is fundamental to the diagnosis and management of disorders of the central nervous system (CNS). The ‛squash’ or ‛crush’ technique has been universally employed in the intraoperative diagnosis of CNS tumors. The aim of our study was to evaluate the accuracy of squash preparation in diagnosing CNS tumors by comparing with hi...

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Effect of 5- azacytidine (5-aza-CR on the expression of DNMT1, DNMT3A, DNMT3B, p14ARF, p16INK4a, and p15INK4b, cell growth inhibition and apoptosis induction lung cancer A549 cell line

Background and aim: Lung cancer is one of the most leading causes of cancer death in males and females and the second leading cause of cancer death. Epigenetic alterations, including DNA hypermethylation, histone deacetylation, and miRNAs lead to the silencing of tumor suppressor genes (TSGs) resulting in tumorigenesis. This change has been reported in various cancers. The activity of DNA meth...

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Fine-mapping loss of gene architecture at the CDKN2B (p15INK4b), CDKN2A (p14ARF, p16INK4a), and MTAP genes in head and neck squamous cell carcinoma.

OBJECTIVE To identify the extent and the smallest region of loss for CDKN2B(INK4b), CDKN2A(ARF,INK4a), and MTAP. Homozygous deletions of human chromosome 9p21 occur frequently in malignant cell lines and are common in squamous cell carcinoma of the head and neck (HNSCC). This complex region encodes the tumor suppressor genes cyclin-dependent kinase 2B (CDKN2B) (p15(INK4b)) and CDKN2A (p14(ARF),...

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ژورنال

عنوان ژورنال: Genetics and Molecular Research

سال: 2008

ISSN: 1676-5680

DOI: 10.4238/vol7-2gmr445