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Updated: Jul 17, 2025

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge
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In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge

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MicroRNAs as novel biomarkers and potential therapeutic options for inflammatory cardiomyopathy

Ganna Aleshcheva1, Christian Baumeier1, Dominik Harms1

  • 1Institute for Cardiac Diagnostics and Therapy (IKDT), Moltkestr. 31, Berlin, Germany.

ESC Heart Failure
|September 8, 2023
PubMed
Abstract

Insights

Specific microRNAs (miRNAs) are down-regulated in virus-negative inflammatory dilated cardiomyopathy (DCMi). These biomarkers can diagnose heart inflammation and guide new therapies for DCMi patients.

Area of Science:

  • Cardiology
  • Molecular Biology
  • Immunology

Background:

  • Heart inflammation, a complex immune response, can lead to tissue damage and heart failure.
  • MicroRNAs (miRNAs) are crucial in disease development and show potential as biomarkers and therapeutic targets.
  • Virus-negative inflammatory dilated cardiomyopathy (DCMi) presents a diagnostic challenge.

Purpose of the Study:

  • To identify and evaluate specific microRNAs (miRNAs) in patients with virus-negative inflammatory dilated cardiomyopathy (DCMi).
  • To assess the diagnostic potential of identified miRNAs for intramyocardial inflammation.
  • To explore the therapeutic implications of these miRNAs in DCMi.

Main Methods:

  • Analysis of 152 serum samples from patients with unexplained heart failure and 10 healthy donors.
  • Stratification of patients into DCMi, DCM, inflammation with viral infections, and viral infections without inflammation groups.
  • Quantification of 754 distinct miRNA expression levels using TaqMan OpenArray.

Main Results:

  • Six miRNAs (miR-1, miR-23, miR-142-5p, miR-155, miR-193, miR-195) were exclusively down-regulated in DCMi patients (P < 0.005).
  • These specific miRNAs effectively differentiated DCMi patients from all other groups with >86% specificity (P < 0.005).
  • The identified miRNA signature provides a novel approach to diagnosing virus-negative inflammatory cardiomyopathy.

Conclusions:

  • Specific down-regulated miRNAs offer a new diagnostic avenue for intramyocardial inflammation in virus-negative DCMi.
  • These miRNAs represent promising candidates for developing targeted therapeutic strategies for virus-negative DCMi.
Keywords:
BiomarkerCardiomyopathyInflammationMiRNA

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