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Genome-wide profiling reveals the distribution pattern of abasic sites in mammalian genomes


ABSTRACT: The AP-seq provides a genome-wide method for detecting abasic sites among the human and mouse genomes Purpose: Abasic sites are one of the most frequent DNA damage among the genome , which often carries harmful consequences for the genome stability and the normal cell functions. So it is necessary to develop a whole genome abasic sites (AP sites) profiling method to detect all the AP sites among the genome, which we called the AP-seq. Methods: The human and mouse genome are processed with enzymatic fragmentation, damage repair, biotin-dU labeling, and pull-down steps. After the sequencing library preparation, the FASTQ files are produced by the Illumina HiSeq XTen platform. To guarantee the reproducibility, each case of the experiment is present with two biological replicates. Results: The reproducibility of our two biological replicates shows a high correlation which larger than 0.95. And the overlap AP site peaks between the HEK293T and MCF-7 cell line are over 50%, which show a great similarity between the different cell lines. Totally, we identified more than 2000 and 1000 abasic site peaks in human, and mouse cell lines separately. Moreover, the distribution of these AP sites prefer to locate in the intergenic regions and introns.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE125254 | GEO | 2020/12/01

REPOSITORIES: GEO

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