- 著者
-
Ryo Ishibashi
- 雑誌
- 研究報告バイオ情報学(BIO) (ISSN:21888590)
- 巻号頁・発行日
- vol.2023-BIO-73, no.34, pp.1-6, 2023-03-02
This paper proposes the application of multidimensional scaling (MDS) to Hi-C data on genomic interactions as a method of visualizing DNA loops. Currently, the mechanisms underlying the regulation of gene expression are poorly understood. Previous studies have focused on reproducing the entire three-dimensional structure of chromatin; however, identifying DNA loops using such data is time-consuming and difficult. Hi-C data were converted to distances by taking the inverse to reproduce loops via MDS, and missing values were set to zero. MDS was applied to the log-transformed genomic coordinate distances using the converted data, and this process successfully reproduced the DNA loops in the given structure. Consequently, the reconstructed DNA loops contained significantly more DNA bound by transcription factors involved in DNA loop formation than that obtained using previously applied methods. In conclusion, the proposed method represents an improvement over previous methods.