2017
DOI: 10.1038/ncomms15104
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DNA single-strand break-induced DNA damage response causes heart failure

Abstract: The DNA damage response (DDR) plays a pivotal role in maintaining genome integrity. DNA damage and DDR activation are observed in the failing heart, however, the type of DNA damage and its role in the pathogenesis of heart failure remain elusive. Here we show the critical role of DNA single-strand break (SSB) in the pathogenesis of pressure overload-induced heart failure. Accumulation of unrepaired SSB is observed in cardiomyocytes of the failing heart. Unrepaired SSB activates DDR and increases the expression… Show more

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Cited by 102 publications
(82 citation statements)
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“…However, SSBs can cause serious health disorders as well. It has been proven in a mouse model that the accumulation of SSBs in cardiomyocytes leads to cardiac inflammation in pressure overload-induced heart failure, due to the persistent DNA damage response [17]. To repair SSBs, the base excision repair (BER) mechanism is incorporated during the cell cycle to repair damaged bases.…”
Section: Introductionmentioning
confidence: 99%
“…However, SSBs can cause serious health disorders as well. It has been proven in a mouse model that the accumulation of SSBs in cardiomyocytes leads to cardiac inflammation in pressure overload-induced heart failure, due to the persistent DNA damage response [17]. To repair SSBs, the base excision repair (BER) mechanism is incorporated during the cell cycle to repair damaged bases.…”
Section: Introductionmentioning
confidence: 99%
“…50) DNA double-strand breaks were not increased. Pressure overload induced more severe heart failure in mice lacking XRCC1, an essential SSB repair enzyme, as compared with the control mice, suggesting the causative role of SSB accumulation and DDR activation in the pathogenesis of pressure overload-induced heart failure.…”
Section: Dna Damage Causes Heart Failurementioning
confidence: 83%
“…In addition to their significance in genome engineering, nicks occur in normal cellular functions and are relevant to human health and disease. [7][8][9][10][11] Accumulation of nicks can lead to both apoptotic and necrotic cell death 6 as well as dysregulation of cellular processes including transcription and DNA replication. 1 Despite their importance, nicks to date have been less of a focus for study than DSBs.…”
Section: Discussionmentioning
confidence: 99%
“…5 Excessive damage can activate poly(ADP-ribose) polymerase (PARP), a protein capable of identifying nicks, signaling for their repair, and triggering cell death via necrosis or apoptosis. 6 Nicks have also been implicated in heart failure in mouse models through increased expression of inflammatory cytokines 7 and are thought to be a major factor affecting the rate of telomere shortening. 8,9 Ataxia-oculomotor apraxia 1 (AOA1) 10 and spinocerebellar ataxia with axonal neuropathy 1 (SCAN1) 11 are neurodegenerative disorders associated with 2 deficient repair of nicks resulting from abortive DNA ligase and topoisomerase 1 activity, respectively.…”
Section: Introductionmentioning
confidence: 99%