Stem cell science is changing medicine and our understanding of human development. The Stem Cell Channel takes you into the labs where cutting edge-research takes place, introduces you to the scientists leading the way, and breaks down how these amazing discoveries impact everyday life and health.
Dissecting the Lives of Hematopietic Cells at a Clonal Level: Appropriate Models and Implications for Gene Therapies Aging and HSC Disorders
Blood-forming stem cells replenish the blood and immune system, making them important targets for gene therapy and transplantation. Cynthia Dunbar, M.D., explains how genetic barcodes let scientists track individual stem cell clones over time. Long-term studies in nonhuman primates reveal stable contributions from blood stem cells and unexpected persistence among certain natural killer immune cells. Dunbar reviews successes and safety concerns in gene therapy, including leukemias associated with some integrating viral vectors. She compares these approaches with CRISPR gene editing, examining challenges in precise gene insertion, stem cell recovery after transplantation, and age-related clonal hematopoiesis. She also addresses treatment costs, intensive preparation for transplantation, and barriers to patient access. These insights help researchers evaluate new treatments more carefully and work toward safer, more accessible care. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40858]
9 Oct 2026
Stem Cells and the Future of Heart Care - Medicine Informing Novel Discoveries (MIND)
Heart repair is moving beyond a single strategy. Catriona Jamieson, M.D., Ph.D., Ehtisham Mahmud, M.D., FACC, FSCAI, Eric Adler, M.D., Karen Christman, Ph.D., and set designer Robert Brill discuss approaches to preventing and repairing heart damage. Mahmud describes a model linking cardiovascular care, training and clinical research. Adler explains how patient skin cells can be turned into beating heart cells to study genetic cardiomyopathies and develop targeted therapies. Christman discusses injectable extracellular matrix materials designed to reduce inflammation, limit scar formation and support repair after a heart attack. Brill connects the science to The Heart, a theatrical work shaped by medicine, organ donation and community. Together, the discussion shows how collaboration across medicine, bioengineering and the arts can expand approaches to heart disease and healing. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 41544]
26 Jun 2026
Heart Regeneration in Humans: Are We There Yet?
Heart regeneration faces two connected challenges: replacing lost muscle and keeping transplanted cells safe and accepted by the body. Charles Murry, M.D., Ph.D., of USC explains why the adult heart heals major cardiomyocyte loss with scar tissue rather than new muscle, leading to progressive heart failure. Murry describes how stem cell derived cardiomyocytes can be manufactured at scale, transplanted into injured hearts, and tested for function in animal models. He also examines major barriers, including graft related arrhythmias, calcium handling stress, immune rejection, and the need for practical immunosuppression or immune edited cells. By connecting cell manufacturing, electrophysiology, immunology, and clinical trial planning, this research shows why heart regeneration is difficult and why careful translation matters for patients with severe heart injury. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40853]
Who has been a guest on Stem Cell Channel (Audio)
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Dan Kaufman MD PhD
Karen Christman PhD
Tiffani Manolis
Justin Graves
Gene Yeo PhD
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