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Loss of Snord116 protects cardiomyocyte kinetics during ischemic stress

In this article published in the Journal of Molecular and Cellular Cardiology Plus, researchers from the University of Vermont utilized living myocardial slices to model early ischemia. This paper is significant for several reasons:

  1. Novel Insights into Snord116’s Role in Cardioprotection: The study reveals that the loss of Snord116, a non-coding RNA associated with Prader-Willi Syndrome (PWS), is cardioprotective during ischemic stress. This finding is surprising as PWS is typically linked to increased cardiovascular risk, suggesting a more complex role for Snord116. ​
  2. Sex-Based Differences in Ischemic Response: The research highlights significant sex-based differences in myocardial response to ischemia. Female myocardial tissue exhibited a more dramatic increase in end-diastolic force and faster changes in contractile kinetics compared to male tissue, underscoring the importance of gender considerations in treatment strategies. ​
  3. Development of a Living Myocardial Slice Model: The study utilizes a novel experimental model using living myocardial slices to simulate ischemia-reperfusion injury. ​This model allows for real-time monitoring of cardiomyocyte function and provides a platform to study acute ischemic effects, which could be valuable for future research and therapeutic development. ​
  4. Potential Therapeutic Implications: The findings suggest that targeting Snord116 could be a novel therapeutic strategy for ischemic cardiac injury. ​Additionally, the study opens avenues for exploring how DNA methylation changes associated with Snord116 loss might influence cardiomyocyte function.
  5. Focus on Early Ischemic Changes: By studying the onset and early phase of ischemia, the paper provides insights into the initial functional changes in cardiomyocytes, which are critical for understanding susceptibility to ischemic injury and developing interventions to mitigate damage.​
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Pilcher LE, Hancock E, Neeli A, Sckolnick M, Caporizzo MA, Palmer BM, Spees JL (2025). Loss of Snord116 protects cardiomyocyte kinetics during ischemic stress. J Mol Cell Cardiol Plus. 2025 Mar 2;11:100291. doi: 10.1016/j.jmccpl.2025.100291.