Circular DNA elements of chromosomal origin are common in healthy human somatic tissue.
Circular DNA elements of chromosomal origin are common in healthy human somatic tissue.
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DOI:
10.1038/s41467-018-03369-8
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发表时间:
2018-03-14
影响因子:
16.6
通讯作者:
Regenberg B
中科院分区:
文献类型:
--
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
The human genome is generally organized into stable chromosomes, and only tumor cells are known to accumulate kilobase (kb)-sized extrachromosomal circular DNA elements (eccDNAs). However, it must be expected that kb eccDNAs exist in normal cells as a result of mutations. Here, we purify and sequence eccDNAs from muscle and blood samples from 16 healthy men, detecting ~100,000 unique eccDNA types from 16 million nuclei. Half of these structures carry genes or gene fragments and the majority are smaller than 25 kb. Transcription from eccDNAs suggests that eccDNAs reside in nuclei and recurrence of certain eccDNAs in several individuals implies DNA circularization hotspots. Gene-rich chromosomes contribute to more eccDNAs per megabase and the most transcribed protein-coding gene in muscle, TTN (titin), provides the most eccDNAs per gene. Thus, somatic genomes are rich in chromosome-derived eccDNAs that may influence phenotypes through altered gene copy numbers and transcription of full-length or truncated genes. Somatic cells can accumulate structural variations such as deletions. Here, Møller et al. show that normal human cells generate large extrachromosomal circular DNAs (eccDNAs), most likely the products of excised DNA, that can be transcriptionally active and, thus, may have phenotypic consequences.
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影响因子:
7
作者:
Eberle, Michael A.;Fritzilas, Epameinondas;Bentley, David R.
通讯作者:
Bentley, David R.
DOI:
10.1249/00005768-198205000-00012
发表时间:
1982-01-01
期刊:
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子:
--
作者:
BORG, GAV
通讯作者:
BORG, GAV
影响因子:
5.3
作者:
CARROLL, SM;DEROSE, ML;WAHL, GM
通讯作者:
WAHL, GM
影响因子:
30.8
作者:
Iafrate, AJ;Feuk, L;Lee, C
通讯作者:
Lee, C
影响因子:
3.7
作者:
Galeote V;Bigey F;Beyne E;Novo M;Legras JL;Casaregola S;Dequin S
通讯作者:
Dequin S