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Updated: Jun 23, 2026

Methyl-binding DNA capture Sequencing for Patient Tissues
Published on: October 31, 2016
Subtelomeric DNA methylation and telomere length in human cancer cells
Myung Eun Lee1, Sun Young Rha, Hei-Cheul Jeung
1Cancer Metastasis Research Center, Yonsei University College of Medicine, Seodaemun-ku, Seoul, South Korea.
Abstract:
Subtelomeric epigenetic modifications are known to be associated with telomere length. We examined subtelomeric DNA methylation at seven sites for five chromosomes by methylation-specific PCR (MSP) and two sites for two chromosomes by bisulfite genomic sequencing (BGS) in 20 human cancer cell lines and subsequently analyzed their association with telomere length. Full-methylation (55/140) was more frequently found compared to un-methylation (35/140) (p=0.01). Subtelomeric-methylation patterns varied from region to region; full-methylation and un-methylation were dominant at one of 9q sites (20/20) and 9p (18/20), respectively. MSP and BGS data exhibited no apparent correlation between methylation status and telomere length. In addition, Hep3B subclones that possessed different telomere lengths exhibited no changes in methylation status according to telomeres. In summary, subtelomeres might form distinct chromatin structures from region to region and effect of subtelomeric DNA methylation on telomere regulation might be little.
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