PARG is dispensable for recovery from transient replicative stress but required to prevent detrimental accumulation of poly(ADP-ribose) upon prolonged replicative stress.
PARG is dispensable for recovery from transient replicative stress but required to prevent detrimental accumulation of poly(ADP-ribose) upon prolonged replicative stress.
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DOI:
10.1093/nar/gku505
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发表时间:
2014-07
影响因子:
14.9
通讯作者:
Schreiber V
中科院分区:
文献类型:
--
作者:
Illuzzi G;Fouquerel E;Amé JC;Noll A;Rehmet K;Nasheuer HP;Dantzer F;Schreiber V
Poly(ADP-ribosyl)ation is involved in numerous bio-logical processes including DNA repair, transcription and cell death. Cellular levels of poly(ADP-ribose) (PAR) are regulated by PAR polymerases (PARPs) and the degrading enzyme PAR glycohydrolase (PARG), controlling the cell fate decision between life and death in response to DNA damage. Replication stress is a source of DNA damage, leading to transient stalling of replication forks or to their collapse followed by the generation of double-strand breaks (DSB). The involvement of PARP-1 in replicative stress response has been described, whereas the consequences of a deregulated PAR catabolism are not yet well established. Here, we show that PARG-deprived cells showed an enhanced sensitivity to the replication inhibitor hydroxyurea. PARG is dispensable to recover from transient replicative stress but is necessary to avoid massive PAR production upon prolonged replicative stress, conditions leading to fork collapse and DSB. Extensive PAR accumulation impairs replication protein A association with collapsed forks resulting in compromised DSB repair via homologous recombination. Our results highlight the critical role of PARG in tightly controlling PAR levels produced upon genotoxic stress to prevent the detrimental effects of PAR over-accumulation.
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影响因子:
14.9
作者:
Gagné JP;Pic E;Isabelle M;Krietsch J;Ethier C;Paquet E;Kelly I;Boutin M;Moon KM;Foster LJ;Poirier GG
通讯作者:
Poirier GG
影响因子:
16.8
作者:
Berti, Matteo;Chaudhuri, Arnab Ray;Thangavel, Saravanabhavan;Gomathinayagam, Shivasankari;Kenig, Sasa;Vujanovic, Marko;Odreman, Federico;Glatter, Timo;Graziano, Simona;Mendoza-Maldonado, Ramiro;Marino, Francesca;Lucic, Bojana;Biasin, Valentina;Gstaiger, Matthias;Aebersold, Ruedi;Sidorova, Julia M.;Monnat, Raymond J., Jr.;Lopes, Massimo;Vindigni, Alessandro
通讯作者:
Vindigni, Alessandro
影响因子:
4
作者:
Ame, Jean-Christophe;Fouquerel, Elise;Schreiber, Valerie
通讯作者:
Schreiber, Valerie
DOI:
10.2183/pjab.79b.305
发表时间:
2003-12-01
影响因子:
3.1
作者:
Gunji, A;Fujihara, H;Masutani, M
通讯作者:
Masutani, M
影响因子:
4.3
作者:
Fathers, Catherine;Drayton, Ross M.;Bryant, Helen E.
通讯作者:
Bryant, Helen E.