Stem Cell Channel (Audio)

Catriona Jamieson, M.D., Ph.D., discusses pioneering research on cancer and aging in space environments, highlighting how microgravity accelerates cancer cell growth and leads to stem cell exhaustion, genomic instability, and “dark genome” activation. Using innovative tools like nano-bioreactors and artificial intelligence, her team simulates these effects and tracks cellular changes, uncovering how space’s unique conditions drive mutations and alter cellular behavior. They find that stem cells rapidly proliferate but then become exhausted in space, a process tied to telomere shortening and mitochondrial stress, impacting cell longevity and regenerative potential. Through collaborations with NASA and industry partners, Jamieson’s research aims to develop therapies to counter these effects, offering potential insights for cancer treatment and stem cell health on Earth. Series: "Stem Cell Channel" [Health and Medicine] [Show ID: 39948]

Elizabeth Blackburn, Ph.D., examines the relationship between telomeres, cellular aging, and metabolic health, highlighting how telomere regulation differs between insulin-sensitive and insulin-resistant individuals. She discusses the effects of environmental factors—like glucose levels, stress hormones, and drugs—on telomere maintenance, which can disrupt cellular coordination and contribute to age-related diseases. Blackburn also shares insights from studies on hibernating lemurs, indicating that while their telomere health remains stable during metabolic slowdowns, it declines upon reactivation. Ultimately, she suggests that telomere maintenance could serve as a valuable biomarker for early signs of metabolic dysfunction, informing strategies for long-term health and resilience. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39944]

Dennis O. Clegg, Ph.D., discusses treatments for age-related macular degeneration (AMD), a condition that causes vision loss. Clegg explains that while patients often report improved vision after receiving implants, objective tests don't always confirm this. He explores the potential differences in patients' responses based on genetics and disease progression. There is also an ongoing challenge in finding the best ways to reduce immune rejection of these treatments. New trials are underway to test implants in earlier stages of the disease, and researchers are looking at different strategies like localized immunosuppression. Additionally, some studies suggest that secretions from retinal cells may help preserve vision. Overall, there are many open questions, but advances in the field offer hope for better AMD treatments. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39459]

Explore the captivating realm of brain research at UC San Diego with Frank Furnari, Ph.D., and Alexander Khalessi, M.D., M.B.A. Furnari and Khalessi delve into groundbreaking efforts to find new treatments for neurological conditions such as brain tumors, stroke, and brain injuries, bringing hope to patients and their families. Emphasizing ethics, innovation, and patient care, Furnari and Khalessi shed light on the challenges and successes in their quest to unravel the mysteries of the mind. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39723]

Catherine Yeung, Pharm.D., Ph.D., M.P.H., discusses groundbreaking advancements in kidney-on-a-chip technology, emphasizing its potential to revolutionize human health. She delves into the role of environmental toxins, such as okra toxin A, microplastics, and plasticizers, in contributing to chronic kidney disease, particularly in regions with specific dietary practices. Yeung also addresses the challenges of replicating adult kidney cells from stem cells, which often retain a fetal phenotype, and underscores the value of stem cell-derived models for genetic manipulation and disease research. Additionally, she highlights the increased risk of kidney stones in astronauts post-spaceflight and the broader implications of organ-on-chip technology for studying therapies and diseases. Series: "Women in Science" [Health and Medicine] [Science] [Show ID: 39458]

Curious about what happens to our cells as we age and how it affects our health? Shiri Gur-Cohen explores the role of tiny chemical tags on our DNA, like methylation, in influencing our healing and overall well-being. Gur-Cohen discusses how these tags might be shaped by our body's systems, such as the lymphatic system, and could even help repair or regenerate various parts of our body. Gur-Cohen proposes that uncovering these processes could lead to innovative ways to slow aging or boost our body’s natural healing capabilities. Series: "Women in Science" [Health and Medicine] [Science] [Show ID: 39979]

Michael Lane, Ph.D., shares his work investigating the effects of cervical spinal cord injury (SCI) on breathing and upper extremity function, focusing on the potential for spontaneous functional recovery, or "plasticity." Lane also discusses efforts to develop and test strategies to promote beneficial plasticity and recovery following cervical SCI, with a particular emphasis on improving respiratory function and activity in respiratory muscles. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39457]

Giorgia Quadrato, Ph.D., explores cerebral organoids as models for neural development and disease research. Using live calcium imaging, Quadrato observes increased neuronal coordination attributed to inhibitory neurons, validated through pharmacological and genetic methods. Quadrato contrasts their organoid generation protocol with previous methods, emphasizing complex patterning, long-term cultures, and co-culture with mouse brain cells for improved physiological relevance. Microfluidics are utilized for enhanced oxygenation and physiological conditions. Future efforts focus on incorporating microglial cells for synaptic pruning studies and overcoming challenges in cryopreservation. Overall, the research aims to advance understanding of neural mechanisms and diseases, enhancing organoid fidelity for biomedical applications. Series: "Women in Science" [Health and Medicine] [Science] [Show ID: 39456]

Benjamin Freedman, Ph.D., delves into the creation and functionality of kidney organoids. He discusses their focus on filtration over hormone functions, and answers intriguing questions about urine characterization and the necessity of organoid structures. Freedman explores the use of scaffolds for implants and ponders the philosophical implications of off-target cells in organoids, questioning whether these cells are a natural part of organ development. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39455]

Can we live not only longer but healthier lives? Robert A.J. Signer and Shiri Gur-Cohen explore how stem cell research may unlock the secrets of longevity. Signer discusses the critical role stem cells play in combating aging-related diseases, such as cancer and immune system decline, by boosting their regenerative abilities. His work on hematopoietic stem cells and “super stem cells,” which better manage cellular waste, shows promise for delaying aging and preventing disease. Dr. Shiri Gur-Cohen examines how vascular and lymphatic systems support stem cell health, revealing new strategies for enhancing longevity and reversing the effects of aging. Don’t miss this in-depth look at the future of aging and human health. Series: "Women in Science" [Health and Medicine] [Science] [Show ID: 39869]