期刊
NUCLEIC ACIDS RESEARCH
卷 31, 期 15, 页码 4490-4496出版社
OXFORD UNIV PRESS
DOI: 10.1093/nar/gkg488
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资金
- NCI NIH HHS [CA68612, CA16056, R01 CA068612, P30 CA016056] Funding Source: Medline
Understanding the role of 'epigenetic' changes such as DNA methylation and chromatin remodeling has now become critical in understanding many biological processes. In order to delineate the global methylation pattern in a given genomic DNA, computer software has been developed to create a virtual image of restriction landmark genomic scanning (Vi-RLGS). When using a methylation- sensitive enzyme such as NotI as the restriction landmark, the comparison between real and in silico RLGS profiles of the genome provides a methylation map of genomic NotI sites. A methylation map of the Arabidopsis genome was created that could be confirmed by a methylation-sensitive PCR assay. The method has also been applied to the mouse genome. Although a complete methylation map has not been completed, a region of methylation difference between two tissues has been tested and confirmed by bisulfite sequencing. Vi-RLGS in conjunction with real RLGS will make it possible to develop a more complete map of genomic sites that are methylated or demethylated as a consequence of normal or abnormal development.
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