Teeing Up Transcription on CpG Islands

نویسنده

  • Harinder Singh
چکیده

Eukaryotic cells use elaborate molecular mechanisms to rapidly activate signal-dependent gene expression. New work provides fresh insights into these mechanisms by demonstrating that CpG islands in promoters are nucleosome-destabilizing elements and can facilitate the establishment of an unusual poised transcriptional state (Ramirez-Carrozzi et al., 2009; Hargreaves et al., 2009).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Study of promoter CpG island hypermethylation of cyclindependent kinase inhibitor gene p21waf1/cip1 on some breast carcinoma cell lines

The p21 belongs to the CIP/KIP family of CDK inhibitors involved in cell cycle arrest at specific stages of the cell cycle progression. DNA methylation is the best studied epigenetic mark that have been evidently associated to chromatin condensation, and repression of gene transcription. The CpG island hypermethylation in promoter region of certain genes occurs in cancer cells and affects tumor...

متن کامل

An evaluation of new criteria for CpG islands in the human genome as gene markers

MOTIVATION Recently, more stringent criteria for CpG islands have been introduced to exclude Alu repeats, thereby enabling a higher proportion of CpG islands associating with genes to be identified. Using these new criteria, several types of associations between CpG islands and genes were investigated to further establish the importance of CpG islands as gene markers. RESULTS The CpG islands ...

متن کامل

CpG islands in human ZFX and ZFY and mouse Zfx genes: sequence similarities and methylation differences.

The human ZFX, human ZFY, and mouse Zfx genes have CpG islands near their 5; ends. These islands are typical in that they span about 1.5 kb, contain transcription initiation sites, and encompass some 5' untranslated exons and introns. However, comparitive nucleotide sequencing of these human and mouse islands provided evidence of evolutionary conservation to a degree unprecedented among mammali...

متن کامل

Predicting CpG Islands and DNA Methlation in the Cow Genome Using DNA Microarray Meta-Analysis and Genome Wide Scanning

DNA methylation is a type of epigenetic changes that directly affects DNA. In mammals, DNA methylation is essential for fetal development and stem cell differentiation and this phenomenon essentially occurs within the CpG islands. In this study, two methods were used to study the DNA methylation profile of cow genome. In the first method, the DNA methylation profile of the differentially expres...

متن کامل

General transcription factor binding at CpG islands in normal cells correlates with resistance to de novo DNA methylation in cancer cells.

Aberrant DNA methylation at CpG islands is thought to contribute to cancer initiation and progression, but mechanisms that establish and maintain DNA methylation status during tumorigenesis or normal development remain poorly understood. In this study, we used methyl-CpG immunoprecipitation to generate comparative DNA methylation profiles of healthy and malignant cells (acute leukemia and color...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Cell

دوره 138  شماره 

صفحات  -

تاریخ انتشار 2009