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Related Experiment Videos

Lnc'ing Ca2+, SERCA and cardiac disease.

Tim Vervliet1, Emma L Robinson2, H Llewelyn Roderick2

  • 1Laboratory of Molecular and Cellular Signalling, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.

Cell Calcium
|May 26, 2018
PubMed
Summary

Reduced sarco/endoplasmic reticulum calcium ATPase (SERCA) function impairs heart contractility and causes calcium overload. A long non-coding RNA, ZFAS1, is implicated in inhibiting SERCA, worsening cardiac disease.

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Area of Science:

  • Cardiovascular Biology
  • Molecular Cardiology
  • Non-coding RNA Research

Background:

  • Reduced function of the sarco/endoplasmic reticulum calcium ATPase (SERCA) is a key factor in heart failure, leading to impaired contractility and calcium (Ca2+) overload.
  • Cardiac arrhythmias are often associated with disruptions in intracellular calcium handling, a process critically dependent on SERCA activity.

Purpose of the Study:

  • To investigate the role of the long non-coding RNA ZFUMl in the regulation of SERCA function in the context of cardiac disease.
  • To explore the implications of ZFAS1-mediated SERCA inhibition on cardiac contractility and arrhythmogenesis.

Main Methods:

  • Analysis of ZFAS1 expression levels in cardiac disease models.
  • In vitro assays to determine the direct inhibitory effect of ZFAS1 on SERCA activity.
Keywords:
Calcium/Ca2Cardiac myocytesExcitation contraction coupling/ECCLong non coding RNA/lncRNASERCA

Related Experiment Videos

  • Assessment of cardiac function and electrophysiology in response to altered ZFAS1 and SERCA levels.

    • Main Results:

    • ZFAS1 expression is significantly upregulated in diseased cardiac tissue.
    • ZFAS1 directly binds to and inhibits the function of SERCA, exacerbating Ca2+ dysregulation.
    • Inhibition of SERCA by ZFAS1 leads to decreased cardiac contractility and increased susceptibility to arrhythmias.

    Conclusions:

    • Upregulation of ZFAS1 is a novel mechanism contributing to SERCA dysfunction in cardiac disease.
    • Targeting the ZFAS1-SERCA interaction may offer a therapeutic strategy for managing heart failure and arrhythmias.
    • Understanding the role of non-coding RNAs like ZFAS1 provides new insights into the complex pathophysiology of cardiovascular diseases.