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Related Experiment Video

Updated: Jul 16, 2026

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation
09:53

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Published on: January 10, 2025

TLR7 Inhibition Limits Ischemic Cardiac Injury by Disrupting ITGAM-Dependent Immune-Endothelial Interactions.

Yijia Li1, Yang Yang1, Chanhee Park1

  • 1Translational Research Program, Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, Maryland, USA; Center for Shock, Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, Maryland, USA.

JACC. Basic to Translational Science
|July 14, 2026
PubMed
Summary

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Toll-like receptor 7 (TLR7) drives inflammation after heart attacks, causing damage. Inhibiting TLR7 reduces heart injury and improves function, offering a new therapeutic approach for ischemia-reperfusion injury.

Area of Science:

  • Cardiovascular Biology
  • Immunology
  • Molecular Medicine

Background:

  • Percutaneous coronary intervention restores blood flow but can cause ischemia-reperfusion (I/R) injury.
  • Innate immune activation contributes significantly to I/R injury, leading to myocardial infarction (MI).

Purpose of the Study:

  • To identify key mediators of postischemic inflammation and endothelial-leukocyte interactions in myocardial I/R injury.
  • To evaluate the therapeutic potential of targeting Toll-like receptor 7 (TLR7) for mitigating I/R injury.

Main Methods:

  • Genetic deletion and pharmacologic inhibition of TLR7 in a mouse model of myocardial I/R.
  • Single-nucleus RNA sequencing to analyze cellular responses and gene expression.
  • Assessment of endothelial-leukocyte interactions under shear stress and ITGAM blockade.
Keywords:
ICAM1-ITGAMTLR7/8endothelial-leukocyte crosstalkenpatoranmyocardial ischemia-reperfusion injurysingle-nucleus RNA sequencing

Related Experiment Videos

Last Updated: Jul 16, 2026

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation
09:53

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Published on: January 10, 2025

Main Results:

  • TLR7 was identified as a critical mediator of postischemic inflammation.
  • TLR7 inhibition reduced inflammation, myocardial infarction size, and improved cardiac function.
  • TLR7 activation promoted ITGAM-dependent endothelial-leukocyte interactions, crucial for immune cell infiltration.

Conclusions:

  • The TLR7-ITGAM signaling axis is a central driver of endothelial-leukocyte crosstalk in myocardial I/R injury.
  • TLR7 inhibition represents a promising therapeutic strategy to reduce ischemic MI following percutaneous coronary intervention.