Drs. Shuibing Chen and Hans Clevers, members of the Steering Committee for the ISSCR Consortium on Advanced Stem Cell-Based Models in Drug Discovery and Development, discuss the need to accelerate the responsible integration of stem cell–derived models into preclinical drug development. Their conversation reflects growing regulatory and policy momentum around new approach methodologies (NAMs) and underscores the importance of rigorous standards, regulatory alignment, and cross-sector collaboration to improve reproducibility and advance more predictive, human-relevant therapies.

Building on its long-standing leadership in global standards, ethics, and policy, the ISSCR is uniquely positioned to convene industry, academia, and regulators around this effort. The initiative also reflects the Society’s expanding industry engagement, with industry membership increasing nearly 180% over the past five years – creating new opportunities for strategic partnerships to address shared scientific and translational challenges.

Treating Frailty with Stem Cells – In a clinical trial, mesenchymal stem cell therapy improved walking distance and physical function in older adults with frailty.

Combined Bone & Bone Marrow Organoids – Researchers developed a scalable iPSC-derived bone marrow organoid that models human lympho-myeloid hematopoiesis and disease.

CAR-NK Progenitors Prevent Relapse – Engineered pluripotent stem cell–derived CAR-expressing NK progenitor cells reduced minimal residual disease and prevented relapse in leukemia models following chemotherapy.

Whole-Body Single-Cell Mapping – Scientists have developed a 3D single-cell-resolution map of mouse organs and the whole neonatal body.

Photo Reference: Courtesy of Drs. Shuibing Chen and Hans Clevers

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Drs. Fiona Doetsch and Nozomu Yachie, Co-Chairs of the ISSCR 2026 Annual Meeting Program Committee, join the podcast to discuss what to expect at the upcoming ISSCR 2026 meeting taking place in Montreal, Canada from July 8 – 11, 2026. This is the world’s largest and most comprehensive gathering dedicated to stem cell research and regenerative medicine, bringing together global leaders across basic science, technology development, translational research, and clinical application. They discuss the meeting’s global focus, program highlights, and spotlight the many new invited speakers and expanded opportunities for trainees to present and network.

HCMV Infection and Cholangiocyte Barriers – Scientists show that human cytomegalovirus infection induces epithelial–mesenchymal transition in cholangiocytes.

Cross-Circulation for Liver Failure – Extracorporeal cross-circulation with genetically modified pig livers provided effective temporary liver support with minimal immune response in a human decedent model.

How Sleep Loss Hurts the Gut – Researchers identified a sleep deprivation-responsive neural circuit that controls intestinal stem cell function.

Mapping the Fetal Stem Cell Niche – Scientists demonstrate a central role of hepatoblasts in the regulation of fetal liver hematopoiesis and stem cell maintenance.

Photo Reference: Courtesy of Fiona Doetsch and Nozomu Yachie

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Dr. Joseph Wu is a Professor of Medicine and Radiology and the Director of the Stanford Cardiovascular Institute. He talks about the importance of pharmacology knowledge in drug discovery. He also discusses his early iPSC research, investigating vaccine-induced myocarditis, and embracing New Approach Methodologies (NAMs). (39:40)

Autism Genes in Organoids: Research provides new insight into the convergent impact of autism spectrum disorder genetic risk on human neurodevelopment. (2:35)

Pancreatic Organoid Screening: High-content screen reveals 54 compounds altering pancreatic organoid shape or differentiation. (13:15)

CRISPR Screening for Tauopathies: CRISPR screens in human neurons reveal modifiers of tau oligomer accumulation. (21:03)

Fixing Facial Scarring: Modulating ROBO2-EID1-EP300 signaling pathway promotes facial-like reduced fibrosis at scar-prone sites. (31:00)

Image courtesy of Dr. Joseph Wu

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Dr. Pinar Mesci is the Global Head of Biomanufacturing and Biotechnology at Axiom Space, where she manages a portfolio focused on biomedical research programs including stem cells, tissue engineering, disease modeling, cancer research, and DNA-inspired nanomaterials. She talks about her early career developing brain organoid models, transitioning to the space industry, and how microgravity affects biological systems. She also discusses the future of low Earth orbit research and how new technologies can be transferred back to Earth. (40:55)

iPSC-Derived Ovarian Support Cells – Fertilo is an ovarian support cell product that improves the in vitro maturation rate of human oocytes. (1:25)

Culturing HSPCs Ex Vivo – A nanoengineered 3D system improves HSPC multi-lineage differentiation and engraftment capacity. (13:30)

Spinal Core Repair Scaffolds – A nanoengineered extrusion-aligned tract promotes axonal reconnection, synapse formation, and locomotor recovery after spinal cord injury. (22:50)

Vascularizing Retinal Organoids – Transient vascular support enhances survival of retinal ganglion cells in organoids. (32:14)

Image courtesy of Dr. Pinar Mesci

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Dr. Deepak Srivastava is the President of the Gladstone Institutes and Director of the Roddenberry Stem Cell Center. His lab is focused on the gene networks that guide cardiac development. He talks about their recent work investigating heart defects in Down syndrome and strategies for delivering therapies to the heart. He also talks about how to incentivize the development and commercialization of cell and gene therapies. (41:50)

Heart and Ganglion Development – Researchers fused human sympathetic ganglion organoids and heart-forming organoids to construct functional connections between the sympathetic ganglia and the heart. (2:38)

Periportal Liver Assembloids – Patient-specific periportal liver assembloids retain the histological arrangement, gene expression, and cell interactions of periportal liver tissue. (9:40)

PIEZO1 and Drug-Induced Cardiotoxicity – Restoring endothelial PIEZO1 protects against tyrosine kinase inhibitor-induced hypertension and cardiac dysfunction. (19:28)

Somite and Neural Tube Co-Development – Scientists developed human trunk-like structures that have morphologically organized somites and a neural tube that form through self-organized, endogenous signaling. (28:43)

Image courtesy of Dr. Deepak Srivastava

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Dr. Hans Clevers is a Professor of Molecular Genetics and Distinguished Group Leader at the University of Utrecht. In this episode, he discusses snake gut and lung organoids, transitioning from academia to industry, and the challenges and complexities of creating a cell therapy. (44:26)

Computers Made From Human Brain Cells – Researchers have shown that structured neuronal firing sequences appear in spontaneous activity of human and murine brain organoids. (2:37)

Organoids Replicate Vascular Pathology – Scientists have developed a blood vessel organoid model from Hutchinson-Gilford progeria syndrome-mutant hESCs. (12:01)

Effects of Spaceflight on Stem Cells – Analyses of nine astronauts before, during, and after three short-duration International Space Station missions shows space-associated stem cell hallmarks of aging and resilience. (21:14)

The Role of Lysosomes in HSC Aging – Reversing lysosomal dysfunction restores youthful state in aged hematopoietic stem cells. (33:25)

Photo Reference: Courtesy of Hans Clevers

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Dr. Thomas Vierbuchen is Assistant Professor of Developmental Biology at Memorial Sloan Kettering Cancer Center. In this episode, he talks about using PSCs to model neurodevelopmental processes. He also discusses his direct reprogramming work and his lab’s recent study on OTX2 in gastrulation. (42:02)

Restoring Function After Spinal Cord Injury: In a non-human primate model of spinal injury, researchers grafted ESC-derived spinal cord neural stem cells and improved forelimb function. (2:00)

Improving HSC Expansion: Inhibiting ferroptosis augments the expansion of HSCs ex vivo. (11:40)

Cardiomyocytes and Macrophage Reprogramming: Injury-induced Clusterin+ cardiomyocytes promote neonatal heart regeneration by reprogramming macrophages. (21:27)

Bone Marrow Organoids: A 3D in vitro bone marrow model captures phenotypic, structural, and functional features of human endosteal bone marrow niches. (33:03)

Image courtesy of Dr. Thomas Vierbuchen

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Dr. Sumru Bayin is a Group Leader at the Gurdon Institute at the University of Cambridge. She talks about her work on regeneration in the neonatal mouse cerebellum and how cerebellar interneurons differentiate. She also discusses organizing a workshop to facilitate collaborations in regenerative biology, and her memories of the late Sir John Gurdon. (40:30)

Heart-Macrophage Assembloids – Human heart–macrophage assembloids enable the study of immune–cardiac interactions and the modeling of arrhythmias. (1:41)

Human Nucleus Basalis Organoids – Human nucleus basalis of Meynert organoids can fuse with human cortical organoids and are used to model neurodevelopmental disorders. (11:15)

A Brain Organoid Atlas – Scientists used iPSCs from patients with neurodevelopmental disorders to generate a brain organoid atlas. (20:19)

Human Cortex Development – Lineage tracing in human tissue samples provides insight into lineage relationships between cortical cell types. (28:03)

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Dr. Juan Melero-Martin is an Associate Professor and the Endowed Chair in Cardiac Surgery at Boston Children’s Hospital. His lab uses bioengineering principles to understand how vascular networks are formed and the mechanisms by which the vasculature modulates the engraftment and activity of various human stem cells. (42:03)

Chromosomal Genes Linked to Heart Disease – Scientists identified HMGN1, a nuclear binding protein, as a key contributor to trisomy 21-related congenital heart defects. (1:46)

Questioning Common Technique for Assessing IVF Embryos  – Live imaging of late-stage preimplantation human embryos suggests that abnormalities can arise at a later stage of development than previously thought. (14:14)

Vitamin C Protects Ovaries – Scientists have shown that oral vitamin C protects against ovarian aging in primates. (24:07)

Multi-Branching Cell Differentiation Trajectories – A new Hodge Laplacian model has advanced single-cell multimodal data analysis by providing highly reliable results for complex multi-branching trajectories. (33:58)

Photo Reference: Courtesy of Dr. Juan Melero-Martin.

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Dr. Carole LaBonne is the Erastus Otis Haven Professor of Molecular Biosciences at Northwestern University. Her lab studies the genesis of neural crest stem cells at the level of the signaling pathways and transcription factors that comprise the neural crest gene regulatory network. They also study how these mechanisms contribute to exit from pluripotency and the subsequent lineage restriction of neural crest cells to their derivative cell types that collectively define vertebrates. (39:45)

Creating Modified Cows and Sheep from Haploid Stem Cells – Scientists have successfully derived haploid androgenetic ESCs from cattle and sheep, and have developed a novel method to generate offspring from these cells. (4:33)

Embryonic Stem Cells from Birds – Researchers have succeeded in deriving and maintaining authentic ESCs from chickens and seven other bird species. (13:48)

Mutation Hotspots Reveal Spermatogonia Clonal Growth – As men age, harmful genetic mutations in sperm not only accumulate but are also favored during sperm production, giving them a reproductive advantage. (20:35)

Canine iPSC Technology – Researchers have established culture conditions for canine iPSCs. (31:10)

Photo Reference: Courtesy of Dr. Carole LaBonne

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