Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Sp1 phosphorylation by ATM downregulates BER and promotes cell elimination in response to persistent DNA damage. / Fletcher, Sally C.; Grou, Claudia P.; Legrand, Arnaud J. и др.
в: Nucleic Acids Research, Том 46, № 4, 28.02.2018, стр. 1834-1846.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Sp1 phosphorylation by ATM downregulates BER and promotes cell elimination in response to persistent DNA damage
AU - Fletcher, Sally C.
AU - Grou, Claudia P.
AU - Legrand, Arnaud J.
AU - Chen, Xin
AU - Soderstrom, Kalle
AU - Poletto, Mattia
AU - Dianov, Grigory L.
PY - 2018/2/28
Y1 - 2018/2/28
N2 - ATM (ataxia-telangiectasia mutated) is a central molecule for DNA quality control. Its activation by DNA damage promotes cell-cycle delay, which facilitates DNA repair prior to replication. On the other hand, persistent DNA damage has been implicated in ATM-dependent cell death via apoptosis; however, the mechanisms underlying this process remain elusive. Here we find that, in response to persistent DNA strand breaks, ATM phosphorylates transcription factor Sp1 and initiates its degradation.We show that Sp1 controls expression of the key base excision repair gene XRCC1, essential for DNA strand break repair. Therefore, degradation of Sp1 leads to a vicious cycle that involves suppression of DNA repair and further aggravation of the load of DNA damage. This activates transcription of pro-apoptotic genes and renders cells susceptible to elimination via both apoptosis and natural killer cells. These findings constitute a previously unrecognized 'gatekeeper' function of ATM as a detector of cells with persistent DNA damage.
AB - ATM (ataxia-telangiectasia mutated) is a central molecule for DNA quality control. Its activation by DNA damage promotes cell-cycle delay, which facilitates DNA repair prior to replication. On the other hand, persistent DNA damage has been implicated in ATM-dependent cell death via apoptosis; however, the mechanisms underlying this process remain elusive. Here we find that, in response to persistent DNA strand breaks, ATM phosphorylates transcription factor Sp1 and initiates its degradation.We show that Sp1 controls expression of the key base excision repair gene XRCC1, essential for DNA strand break repair. Therefore, degradation of Sp1 leads to a vicious cycle that involves suppression of DNA repair and further aggravation of the load of DNA damage. This activates transcription of pro-apoptotic genes and renders cells susceptible to elimination via both apoptosis and natural killer cells. These findings constitute a previously unrecognized 'gatekeeper' function of ATM as a detector of cells with persistent DNA damage.
UR - http://www.scopus.com/inward/record.url?scp=85042907434&partnerID=8YFLogxK
U2 - 10.1093/nar/gkx1291
DO - 10.1093/nar/gkx1291
M3 - Article
C2 - 29294106
AN - SCOPUS:85042907434
VL - 46
SP - 1834
EP - 1846
JO - Nucleic Acids Research
JF - Nucleic Acids Research
SN - 0305-1048
IS - 4
ER -
ID: 14279985