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Long term exercise-derived exosomal LncRNA CRNDE mitigates myocardial infarction injury through miR-489-3p/Nrf2 signaling axis.
Nanomedicine : Nanotechnology, Biology, and Medicine 2023 November 7
Myocardial infarction (MI) is a cardiovascular disease and troubles patients all over the world. Exosomes produced after long-term exercise training were discovered to mediate intercellular communication and alleviate MI-induced heart injury. However, the detailed roles of long-term exercise-derived exosomal long noncoding RNAs (LncRNAs) in MI remain uncovered. In this study, we collected and identified long-term exercise-derived exosomes, and established MI or hypoxia/reoxygenation (H/R) model after LncRNA colorectal neoplasia differentially expressed (CRNDE) depletion. This work proved that LncRNA CRNDE was highly expressed in long-term exercise-derived exosomes (p = 0.0078). CRNDE knockdown increased cardiomyocytes apoptosis and oxidative stress (p = 0.0036), and suppressed MI progress (p = 0.0005). CRNDE served as the sponge of miR-489-3p to affect Nrf2 expression (p = 0.0001). MiR-489-3p inhibition effectively reversed the effects of CRNDE depletion on hypoxia cardiomyocytes (p = 0.0002). These findings offered a promising therapeutic option for the treatment of MI.
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