Sarcomere function activates a p53-dependent DNA damage response that promotes polyploidization and limits in vivo cell engraftment
Pettinato A, Yoo D, VanOudenhove J, Chen Y, Cohn R, Ladha F, Yang X, Thakar K, Romano R, Legere N, Meredith E, Robson P, Regnier M, Cotney J, Murry C, Hinson J. Sarcomere function activates a p53-dependent DNA damage response that promotes polyploidization and limits in vivo cell engraftment. Cell Reports 2021, 35: 109088. PMID: 33951429, PMCID: PMC8161465, DOI: 10.1016/j.celrep.2021.109088.Peer-Reviewed Original ResearchConceptsCell cycle arrestSarcomere functionHuman cardiomyocyte modelHuman cardiac regenerationInfarcted rat heartsCardiomyocyte engraftmentCell engraftmentReplicative rateRat heartDNA damage responseCardiomyocyte modelCardiac regenerationOxidative metabolismUnclear mechanismsProgressive polyploidizationCyclin B1P53-dependent DNA damage responseEngraftmentP53 activationArrestDamage responseSingle-cell transcriptomicsReplicative arrest