A genetic memory initiates the epigenetic loop necessary to preserve centromere position.
A genetic memory initiates the epigenetic loop necessary to preserve centromere position.
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遗传记忆启动了维护中心粒位置所需的表观遗传环。
DOI:
10.15252/embj.2020105505
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发表时间:
2020-10-15
期刊:
影响因子:
--
通讯作者:
Fachinetti D
中科院分区:
文献类型:
--
作者:
Hoffmann S;Izquierdo HM;Gamba R;Chardon F;Dumont M;Keizer V;Hervé S;McNulty SM;Sullivan BA;Manel N;Fachinetti D
Centromeres are built on repetitive DNA sequences (CenDNA) and a specific chromatin enriched with the histone H3 variant CENP‐A, the epigenetic mark that identifies centromere position. Here, we interrogate the importance of CenDNA in centromere specification by developing a system to rapidly remove and reactivate CENP‐A (CENP‐AOFF/ON). Using this system, we define the temporal cascade of events necessary to maintain centromere position. We unveil that CENP‐B bound to CenDNA provides memory for maintenance on human centromeres by promoting de novo CENP‐A deposition. Indeed, lack of CENP‐B favors neocentromere formation under selective pressure. Occasionally, CENP‐B triggers centromere re‐activation initiated by CENP‐C, but not CENP‐A, recruitment at both ectopic and native centromeres. This is then sufficient to initiate the CENP‐A‐based epigenetic loop. Finally, we identify a population of CENP‐A‐negative, CENP‐B/C‐positive resting CD4+ T cells capable to re‐express and reassembles CENP‐A upon cell cycle entry, demonstrating the physiological importance of the genetic memory. Rapid removal and reactivation of CENP‐A defines the temporal cascade of events necessary to maintain centromere position, with DNA‐bound CENP‐B providing memory and preventing movement of centromere position.
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影响因子:
11.8
作者:
Chen, Chin-Chi;Bowers, Sarion;Lipinszki, Zoltan;Palladino, Jason;Trusiak, Sarah;Bettini, Emily;Rosin, Leah;Przewloka, Marcin R.;Glover, David M.;O'Neill, Rachel J.;Mellone, Barbara G.
通讯作者:
Mellone, Barbara G.
影响因子:
21.3
作者:
Carroll, Christopher W.;Silva, Mariana C. C.;Godek, Kristina M.;Jansen, Lars E. T.;Straight, Aaron F.
通讯作者:
Straight, Aaron F.
DOI:
10.1126/science.1259308
发表时间:
2015-05-08
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Falk SJ;Guo LY;Sekulic N;Smoak EM;Mani T;Logsdon GA;Gupta K;Jansen LE;Van Duyne GD;Vinogradov SA;Lampson MA;Black BE
通讯作者:
Black BE
DOI:
10.1083/jcb.201001013
发表时间:
2010-06-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Carroll CW;Milks KJ;Straight AF
通讯作者:
Straight AF
影响因子:
1.6
作者:
EARNSHAW, WC;RATRIE, H;STETTEN, G
通讯作者:
STETTEN, G