Targeted removal of mitochondrial DNA from mouse and human extrachromosomal circular DNA with CRISPR-Cas9.
Targeted removal of mitochondrial DNA from mouse and human extrachromosomal circular DNA with CRISPR-Cas9.
复制标题
CRISPR-Cas9靶向去除小鼠和人染色体外环状DNA中的线粒体DNA。
DOI:
10.1016/j.csbj.2022.06.028
复制
发表时间:
2022
影响因子:
6
通讯作者:
中科院分区:
文献类型:
--
作者:
Extrachromosomal circular DNA (eccDNA) of chromosomal origin is common in eukaryotic cells. Amplification of oncogenes on large eccDNA (ecDNA) can drive biological processes such as tumorigenesis, and identification of eccDNA by sequencing after removal of chromosomal DNA is therefore important for understanding their impact on the expressed phenotype. However, the circular mitochondrial DNA (mtDNA) might challenge the detection of eccDNA because the average somatic cell has hundreds of copies of mtDNA. Here we show that 61.2–99.5% of reads from eccDNA-enriched samples correspond to mtDNA in mouse tissues. We have developed a method to selectively remove mtDNA from total circular DNA by CRISPR/Cas9 guided cleavage of mtDNA with one single-guide RNA (sgRNA) or two sgRNAs followed by exonuclease degradation of the linearized mtDNA. Sequencing revealed that mtDNA reads were 85.9% ± 12.6% removed from eccDNA of 9 investigated mouse tissues. CRISPR/Cas9 cleavage also efficiently removed mtDNA from a human HeLa cell line and colorectal cancer samples. We identified up to 14 times more, and also larger eccDNA in CRISPR/Cas9 treated colorectal cancer samples than in untreated samples. We foresee that the method can be applied to effectively remove mtDNA from any eukaryotic species to obtain higher eccDNA yields.
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DOI:
10.1007/978-1-0716-1134-0_7
发表时间:
2021-01-01
期刊:
PLANT TRANSPOSABLE ELEMENTS
影响因子:
--
作者:
Lanciano, Sophie;Zhang, Panpan;Mirouze, Marie
通讯作者:
Mirouze, Marie
影响因子:
14.8
作者:
Mehta, Devang;Cornet, Luc;Vanderschuren, Herve
通讯作者:
Vanderschuren, Herve
影响因子:
3
作者:
Mann L;Seibt KM;Weber B;Heitkam T
通讯作者:
Heitkam T
影响因子:
30.8
作者:
Cao, Liqin;Shitara, Hiroshi;Yonekawa, Hiromichi
通讯作者:
Yonekawa, Hiromichi
影响因子:
16.6
作者:
Møller HD;Mohiyuddin M;Prada-Luengo I;Sailani MR;Halling JF;Plomgaard P;Maretty L;Hansen AJ;Snyder MP;Pilegaard H;Lam HYK;Regenberg B
通讯作者:
Regenberg B