Detecting cell-of-origin and cancer-specific methylation features of cell-free DNA from Nanopore sequencing

oleh: Efrat Katsman, Shari Orlanski, Filippo Martignano, Ilana Fox-Fisher, Ruth Shemer, Yuval Dor, Aviad Zick, Amir Eden, Iacopo Petrini, Silvestro G. Conticello, Benjamin P. Berman

Format: Article
Diterbitkan: BMC 2022-07-01

Deskripsi

Abstract The Oxford Nanopore (ONT) platform provides portable and rapid genome sequencing, and its ability to natively profile DNA methylation without complex sample processing is attractive for point-of-care real-time sequencing. We recently demonstrated ONT shallow whole-genome sequencing to detect copy number alterations (CNAs) from the circulating tumor DNA (ctDNA) of cancer patients. Here, we show that cell type and cancer-specific methylation changes can also be detected, as well as cancer-associated fragmentation signatures. This feasibility study suggests that ONT shallow WGS could be a powerful tool for liquid biopsy. Graphical Abstract