NIH R01 · 2024
Sequence Variants Impacting Cardiomyocyte S-phase Activity in Inbred Mice Following Injury
Numerous studies have shown that induction of cardiomyocyte cell cycle activity can have a profound beneficial impact on cardiac structure and function following myocardial infarction. It has also been shown that genetic background can impact the intrinsic rate of cardiomyocyte cell cycle activity in mice. We have observed that mice in a DBA/2J genetic background (abbreviated DBA) have very low levels of cardiomyocyte cell cycle activity following myocardial infarction. However, when crossed with C57Bl6/NCR mice (abbreviated NCR), the resulting (DBA x NCR)-F1 animals mice exhibit a marked increase in cardiomyocyte S-phase activity following infarction, indicating the presence of an…
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