Key result
Loss of the miR-106b-25 cluster promotes atrial fibrillation susceptibility by increasing RyR2 protein expression by 42% and enhancing sarcoplasmic reticulum calcium leak.
Why the study?
Does loss of the miR-106b-25 cluster promote atrial fibrillation via enhanced RyR2-mediated sarcoplasmic reticulum Ca(2+)-leak?
Does loss of the miR-106b-25 cluster promote atrial fibrillation via enhanced RyR2-mediated sarcoplasmic reticulum Ca(2+)-leak?
The miR-106b-25 cluster regulates RyR2 expression, and its loss promotes atrial fibrillation via enhanced calcium leak, identifying it as a potential therapeutic target.
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miR-106b-25 cluster may regulate RyR2 in paroxysmal AF; hypothesis-generating for targeted therapies, pending validation.
Chiang et al. (2014) studied Atrial fibrillation. Loss of miR-106b-25 cluster vs. Wild-type littermates / patients in sinus rhythm was evaluated on RyR2 protein expression, sarcoplasmic reticulum Ca(2+)-leak, and AF susceptibility. Loss of the miR-106b-25 cluster promotes atrial fibrillation susceptibility by increasing RyR2 protein expression by 42% and enhancing sarcoplasmic reticulum calcium leak.
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