For ligation sequencing 1 ug of cell line DNA was sheared to 8–20 kb with a G-tube (Covaris) or used unsheared with the LSK-109 kit. Targeted sequencing of HPV16 was carried out in CaSki and SiHa cells using CRISPR probes to HPV16 probes (Supplementary Table S1). For transposase sequencing of cell lines, 1 ug was used with the Rapid Sequencing kit (SQK-RAD004, Oxford Nanopore). CaSki and SNU-1000 DNA was also prepared using the Ultra-Long protocol of Circulomics and the Ultra-Long DNA Sequencing kit (SQK-ULK001, Oxford Nanopore) with and without adaptive sampling (35 (link),36 (link)) using a combined human HG38/high-risk HPV FASTA file selecting for cancer genes, integration loci, and HPV.
Tumor DNAs (0.3 ug) were sequenced using the Rapid Barcoding kit (SQK-RBK004, Oxford Nanopore). A total of 30–50 fM of DNA was loaded onto MinIon R9.4 flow cells (Oxford Nanopore).