The Stem Cell Podcast

Ep. 317: “Engineering the Human Heart” Featuring Dr. Aitor Aguirre

Mar 31, 2026
Dr. Aitor Aguirre, Associate Professor at Michigan State University who builds cardiac organoids from pluripotent stem cells. He explores self-organization versus engineering in heart models. He talks about assembloids with immune and neural components, modeling atrial fibrillation, and plans for functional screening and open science collaborations.
Ask episode
AI Snips
Chapters
Transcript
Episode notes
INSIGHT

Organoids Combine Tech Development And Disease Modeling

  • Aitor Aguirre frames organoid work as two strengths: technology development and disease modeling.
  • His lab focuses on improving biomimicry and then applying organoids to human heart development and disease models.
INSIGHT

Why Engineering And Self-Organization Are Complementary

  • Aguirre contrasts bottom-up engineered heart tissues with self-organizing organoids, arguing both are valid because biology remains incompletely understood.
  • He predicts engineered tissues will win once we fully understand developmental 'parts,' but organoids are currently superior for complex anatomy like chambers.
ANECDOTE

How A Student Project Turned Into Cardiac Macrophage Organoids

  • Aitor recounts starting a project to add tissue-resident macrophages to heart organoids inspired by a mouse Cell paper and a student, Colin O'Hare.
  • After many failed attempts they achieved macrophage integration, single-cell validation, and observed electrophysiologic interactions.
Get the Snipd Podcast app to discover more snips from this episode
Get the app