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Related Experiment Videos

Long noncoding RNA SALTe1, microvascular ageing, and cardiac dysfunction.

Haobo Li1,2, Xiao Xiao1, Yirong Zhou2,3,4

  • 1Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA.

European Heart Journal
|May 19, 2026
PubMed
Summary

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This summary is machine-generated.

Exercise may counteract vascular ageing by regulating specific long noncoding RNAs (lncRNAs). Inhibiting SALTe1, a key lncRNA, improved heart function and blood flow in aged mice, suggesting a new therapeutic target.

Area of Science:

  • Molecular biology
  • Cardiovascular research
  • Gerontology

Background:

  • Ageing causes microvascular dysfunction, impacting organ health and longevity.
  • Molecular drivers of vascular ageing and exercise's protective effects are not fully understood.
  • Long noncoding RNAs (lncRNAs) role in vascular ageing and cardiac dysfunction requires investigation.

Purpose of the Study:

  • Investigate if exercise-regulated lncRNAs influence microvascular ageing.
  • Determine the role of lncRNAs in age-related cardiac dysfunction.
  • Identify specific lncRNAs involved in exercise-mediated vascular protection.

Main Methods:

  • RNA sequencing in aged mice with and without exercise.
  • Functional analysis of candidate lncRNAs using AAV vectors and antisense oligonucleotides.
Keywords:
AgeingEndothelial cellsExerciseHeartLong noncoding RNASenescence

Related Experiment Videos

  • In vivo and in vitro studies in endothelial cells (ECs) and aged mice.

    • Main Results:

    • Identified novel exercise-regulated lncRNAs termed SALTes (Senescence Associated LncRNA Transcripts in Exercise).
    • SALTe1, enriched in ECs, is elevated in aged hearts and heart failure patients, but reduced by exercise.
    • SALTe1 inhibition improved endothelial function, microvascular perfusion, and cardiac diastolic function in aged mice, partly via PARP9 upregulation.

    Conclusions:

    • SALTe1 is a key regulator of endothelial senescence and age-related microvascular/cardiac dysfunction.
    • Targeted SALTe1 inhibition mimics exercise's protective vascular effects.
    • Antisense-based inhibition of SALTe1 offers a potential therapeutic strategy against age-related cardiac decline.