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Reinforcing Stromal Cell Spheroid Through Red-Light Preconditioning for Advanced Vascularization.

Yu-Jin Kim1,2, Hyeok Kim2, Dong-Hyun Lee1

  • 1School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|April 25, 2025
PubMed
Summary

This study enhances stromal cell therapy for heart attack recovery by using special light (OLED-based photobiomodulation) and 3D cell structures. These engineered cells improve cardiac function and reduce damage after myocardial infarction (MI).

Keywords:
OPBM‐preconditioningangiogenesisarteriogenesismyocardial infarctionstromal cell spheroid

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Area of Science:

  • Regenerative Medicine
  • Cardiovascular Research
  • Biomedical Engineering

Background:

  • Stromal cell therapy shows promise for myocardial infarction (MI) but suffers from poor cell retention.
  • Existing methods struggle to maintain cell viability and therapeutic efficacy in the ischemic cardiac environment.

Purpose of the Study:

  • To develop an improved stromal cell therapy for post-MI cardiac repair.
  • To investigate the synergistic effects of photobiomodulation preconditioning and 3D spheroid culture for human adipose-derived stromal cells (hADSCs).

Main Methods:

  • Human adipose-derived stromal cells (hADSCs) were preconditioned using OLED-based photobiomodulation (OPBM).
  • Preconditioned hADSCs were cultured into 3D spheroids.
  • The therapeutic efficacy of these preconditioned 3D spheroids (APCS group) was evaluated in a rat model of MI.

Main Results:

  • The APCS group demonstrated significantly enhanced angiogenic, arterialized, and tissue remodeling capabilities compared to 2D cultures and non-preconditioned spheroids.
  • In vivo transplantation improved cardiac function and reduced adverse remodeling.
  • Enhanced anti-fibrosis and angiogenesis, including arterialization, were observed post-transplantation.

Conclusions:

  • Combining OPBM preconditioning with 3D spheroid culture significantly enhances the therapeutic potential of hADSCs for cardiac repair.
  • This novel approach overcomes limitations of traditional stromal cell therapy in post-MI heart failure.
  • The strategy offers a next-generation cell therapeutic for myocardial infarction treatment.