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Related Concept Videos

NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The heterodimer of NF-κB...

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Related Experiment Video

Updated: Jul 3, 2026

A Macrophage Reporter Cell Assay to Examine Toll-Like Receptor-Mediated NF-kB/AP-1 Signaling on Adsorbed Protein Layers on Polymeric Surfaces
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Microfluidic Modeling of Macrophage-Induced Cardiac Inflammation Using NF-κB Reporter Cardiomyocytes.

Chao Liu1, Xi Rui1, Qiang Lu2

  • 1Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA.

Advanced Healthcare Materials
|February 21, 2026
PubMed
Summary
This summary is machine-generated.

Inflammation drives heart disease. This study developed a cardiac inflammation model to investigate macrophage-cardiomyocyte interactions, revealing key signaling thresholds and effective anti-inflammatory treatments for heart conditions.

Keywords:
Co‐cultureNF‐κBcardiac inflammationdrug screeningmicrofluidicmolecular reporter

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Area of Science:

  • Cardiovascular Biology
  • Immunology
  • Biomedical Engineering

Background:

  • Inflammation, particularly macrophage-cardiomyocyte interactions, is central to cardiac disease progression.
  • Understanding the spatial and temporal dynamics of this crosstalk is crucial for developing targeted therapies.

Purpose of the Study:

  • To develop and validate an in vitro cardiac inflammation model for studying macrophage-cardiomyocyte crosstalk.
  • To investigate the spatiotemporal dynamics of inflammatory signaling in cardiomyocytes.

Main Methods:

  • Developed an in vitro model using cardiomyocytes with an NF-κB-responsive fluorescent reporter.
  • Employed MATLAB simulations to optimize experimental conditions (TNFα diffusion).
  • Utilized a multiplex microfluidic co-culture chip for controlled experiments.

Main Results:

  • Identified a TNFα threshold (50 ng/mL for 6h) sufficient to activate cardiomyocyte NF-κB signaling.
  • Demonstrated that macrophage-conditioned medium and direct co-culture enhance cardiomyocyte inflammatory stress.
  • Found dexamethasone effectively suppressed NF-κB activation, while IL-10 showed limited efficacy.

Conclusions:

  • The developed cardiac inflammation model is a versatile platform for dissecting immune-cardiac crosstalk.
  • This model supports future studies on multicellular signaling dynamics and therapeutic screening for heart diseases.