Identifying DNA methylation in a nanochannel

Xiaoyin Sun, Takao Yasui, Takeshi Yanagida, Noritada Kaji, Sakon Rahong, Masaki Kanai, Kazuki Nagashima, Tomoji Kawai, Yoshinobu Baba

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


DNA methylation is a stable epigenetic modification, which is well known to be involved in gene expression regulation. In general, however, analyzing DNA methylation requires rather time consuming processes (24–96 h) via DNA replication and protein modification. Here we demonstrate a methodology to analyze DNA methylation at a single DNA molecule level without any protein modifications by measuring the contracted length and relaxation time of DNA within a nanochannel. Our methodology is based on the fact that methylation makes DNA molecules stiffer, resulting in a longer contracted length and a longer relaxation time (a slower contraction rate). The present methodology offers a promising way to identify DNA methylation without any protein modification at a single DNA molecule level within 2 h.

Original languageEnglish
Pages (from-to)644-649
Number of pages6
JournalScience and Technology of Advanced Materials
Issue number1
Publication statusPublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Materials Science(all)


Dive into the research topics of 'Identifying DNA methylation in a nanochannel'. Together they form a unique fingerprint.

Cite this