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Translational Rabbit Model of Chronic Cardiac Pacing
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The road to biological pacing.

Michael R Rosen1, Richard B Robinson, Peter R Brink

  • 1Department of Pharmacology, Center for Molecular Therapeutics, College of Physicians and Surgeons of Columbia University, 630 West 168th Street, PH7 West-321, New York, NY 10032, USA. mrr1@columbia.edu

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Biological pacing research, combining gene and cell therapies, is advancing towards clinical application. Promising results in animal models suggest biological pacemakers may soon become a reality, potentially rivaling electronic devices.

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Area of Science:

  • Cardiovascular Research
  • Regenerative Medicine
  • Biotechnology

Background:

  • Biological pacing research is in its second decade, stemming from studies on cardiac impulse initiation.
  • Initial research focused on gene therapy and cell therapy, with biomaterials research emerging as a key area.
  • The field aims to develop alternatives to traditional electronic pacemakers.

Purpose of the Study:

  • To review milestones and the 'roadmap' in biological pacing research.
  • To assess the current status and future prospects of biological pacemakers.
  • To discuss the potential for clinical translation and comparison with electronic pacemakers.

Main Methods:

  • Review of existing literature and research milestones in biological pacing.
  • Analysis of gene therapy, cell therapy, and biomaterials approaches.
  • Evaluation of proof-of-principle studies and translation to large-animal models.

Main Results:

  • Significant progress has been made, with promising constructs achieving physiologically relevant heart rates and autonomic responsiveness.
  • Proof-of-principle studies are transitioning to long-term, large-animal model investigations.
  • The clinical applicability of biological pacemakers remains uncertain but is increasingly plausible.

Conclusions:

  • Biological pacing has shown considerable advancement, with functional prototypes emerging from research.
  • The next decade is critical for determining if biological pacemakers will become clinically available or if electronic pacemakers will remain the superior option.
  • Continued research interest is vital for the future of biological pacing technology.