Stem Cell Channel (Video)
Science & Medicine

Stem Cell Channel (Video)

作者: UCTV
最近更新: 4周前
Stem cell science is changing medicine and our understanding of human development. The Stem Cell Cha...

Recent Episodes

Dissecting the Biological Complexity of Animal Regeneration

Dissecting the Biological Complexity of Animal Regeneration

Alejandro Sánchez Alvarado, Ph.D., argues that real progress in understanding regeneration comes from studying whole organisms rather than cells grown under artificial conditions. Sánchez Alvarado shows how observations from intact animals reveal organizing rules that narrow laboratory systems can miss. He presents evidence that stem cells in a studied animal lack detectable junctions with neighboring cells and instead respond to signals that travel across tissues. Sánchez Alvarado links this communication to extracellular vesicles that carry RNA and to metabolic support involving creatine, highlighting how distant tissues influence repair. Using imaging and molecular analyses, he tracks how signals move through the body and how specific cell populations change state during recovery. Sánchez Alvarado concludes that broad, comparative research is essential for uncovering general principles that govern how adult tissues restore form and function. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40454]

4周前
57分钟
In Vivo Brain Organoid Model to Study Human Neuronal-glia Interactions

In Vivo Brain Organoid Model to Study Human Neuronal-glia Interactions

An in vivo brain organoid platform reveals how human neurons and glia interact across development, aging, and disease. Fred H. Gage, Ph.D., generates three dimensional organoids from induced pluripotent stem cells and examines their maturation, synapses, and network activity with two-photon imaging and single-cell profiling. Gage integrates human microglia and astrocytes to study immune signaling, injury responses, and support functions that shape circuit behavior. Transplantation enables vascularization, reduces cell death, and yields features consistent with a blood brain barrier. Analyses identify diverse astrocyte types and trajectories, while patterns of tau expression inform Alzheimer’s disease modeling. Gage also converts adult fibroblasts into age retaining neurons that assemble into 3D spheroids, creating complementary models to connect genes, cells, and circuits with pathology and to guide strategies for prevention and therapy. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 41160]

2个月前
49分钟
A Closer Look at...Stem Cells and Clinical Trials

A Closer Look at...Stem Cells and Clinical Trials

Clinical trials turn scientific discoveries into real options for patients and volunteers, advancing care while safeguarding participants. Sheldon Morris, M.D., M.P.H., explains how independent oversight, core ethical principles, and stepwise phases evaluate safety and benefit, and clarifies participants’ rights and responsibilities. Sandip Patel, M.D., F.A.S.C.O., highlights how carefully designed studies open access to promising cell and gene-based approaches while balancing risks and benefits. Robert A.J. Signer, Ph.D., underscores why participation—including consenting to share samples and data—helps researchers understand disease and accelerate better treatments. Morris, Patel, and Signer point audiences to practical ways to locate studies through registries and national databases, discuss what costs are typically covered, and advise asking questions about study design and safety. They also caution against unproven “stem cell tourism” and emphasize informed decisions. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40438]

2个月前
46分钟
Stem Cells for Conservation: Trials and Tribulations of a Non-Model System

Stem Cells for Conservation: Trials and Tribulations of a Non-Model System

Marisa Korody, Ph.D., leads groundbreaking work at the San Diego Zoo Wildlife Alliance’s Beckman Center for Conservation Research, where scientists use advanced genetic and stem cell technologies to protect endangered species. Korody highlights efforts to save the critically endangered northern white rhino by developing induced pluripotent stem cells that can be transformed into egg and sperm precursors, offering a potential path to revive the species. This research is part of a broader conservation mission that includes global projects in genetics, reintroduction, and community engagement. By combining cutting-edge science with wildlife management, the San Diego Zoo Wildlife Alliance works to preserve biodiversity and ensure the survival of species threatened by habitat loss, poaching, and climate change, demonstrating the critical role of innovation in conservation. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40451]

3个月前
1小时4分钟
Stem Cells and Precision Regenerative Medicine in Breast Cancer - Medicine Informing Novel Discoveries (MIND)

Stem Cells and Precision Regenerative Medicine in Breast Cancer - Medicine Informing Novel Discoveries (MIND)

Advances in precision medicine and patient advocacy are transforming the way cancer is understood and treated. Nikoo McGoldrick shares her personal journey with metastatic breast cancer, emphasizing the importance of patients having a voice in their care. Sheldon Morris, M.D., M.P.H., explains how regenerative medicine progresses through stem cell therapies, gene therapies, CAR-T cell treatments, and small molecules, with clinical trials addressing cancer, autoimmune disorders, and neurological diseases. Sandip Patel, M.D., F.A.S.C.O., highlights cancer stem cells as key drivers of relapse and resistance, describing precision medicine approaches, novel CAR-T therapies, and the role of artificial intelligence in cancer detection and treatment. Rebecca Shatsky, M.D., focuses on breast cancer as a systemic disease linked to dormant cancer stem cells, underscoring the need for genomic and immune-based therapies, including innovative antibody treatments and targeted clinical trials. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40910]

3个月前
1小时7分钟
Targeting the MLL Complex in Leukemia

Targeting the MLL Complex in Leukemia

Scott A. Armstrong, M.D., Ph.D., of the Dana-Farber Cancer Institute, studies how certain aggressive forms of acute myeloid leukemia (AML) develop and survive. His work centers on a protein called menin, which helps leukemia cells keep cancer-promoting genes switched on. Armstrong’s team has found that blocking menin with specially designed drugs can shut down these gene programs, push leukemia cells to mature, and slow or stop the disease in lab models and patients. While some leukemias adapt by developing mutations in menin or finding other ways to survive, his research is revealing why certain genes are especially dependent on menin and how to target them more effectively. These discoveries are now shaping new treatments, drug combinations, and potential strategies for other cancers that rely on similar mechanisms. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40875]

3个月前
58分钟
The Hematopoietic Stem Cell Niche and Implications for Clinical Transplantation

The Hematopoietic Stem Cell Niche and Implications for Clinical Transplantation

Sean Morrison, Ph.D., from the Children’s Medical Center Research Institute at UT Southwestern, investigates how stem cells function, regenerate, and interact with their surrounding environment in the bone marrow. His research reveals how leptin receptor-positive cells—key components of the bone marrow niche—regulate hematopoietic stem cell maintenance and regeneration, influence platelet production, and respond to physiological stress like pregnancy. Morrison uncovers a reciprocal relationship between these niche cells and peripheral nerves, showing that disrupting nerve signals impairs bone marrow recovery after chemotherapy or radiation. His work also links retrotransposon activation during pregnancy to increased red blood cell production, with implications for maternal health and transplant medicine. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40449]

4个月前
54分钟
Cellular Reprogramming in Human Disease

Cellular Reprogramming in Human Disease

Deepak Srivastava, MD, explores how cellular reprogramming offers new hope for treating heart disease. He highlights innovative strategies to regenerate damaged heart tissue by stimulating adult cardiomyocytes to divide and converting fibroblasts into heart-like cells. His team develops a nonviral delivery system using lipid nanoparticles and investigates the role of specific gene regulators in restoring heart function in animal models. Srivastava also discusses a potential oral therapy for aortic valve disease, driven by insights into cellular fate changes caused by NOTCH1 mutations and telomere shortening. Additionally, he reveals how trisomy 21 may trigger congenital heart defects by altering the identity of specialized heart cells. Through pioneering research in genetics and regenerative medicine, Srivastava demonstrates how understanding developmental biology can lead to transformative clinical advances. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40447]

4个月前
58分钟
Stem Cells and Next Generation Regenerative Medicine Therapies - Medicine Informing Novel Discoveries (MIND)

Stem Cells and Next Generation Regenerative Medicine Therapies - Medicine Informing Novel Discoveries (MIND)

Hear about cutting-edge advances in regenerative medicine, from lab breakthroughs to patient impact. Catriona Jamieson, MD, PhD, introduces efforts at the Sanford Stem Cell Institute to develop therapies that enhance the body’s ability to heal itself. Dan Kaufman, MD, PhD, shares progress in cancer immunotherapy using engineered natural killer cells derived from pluripotent stem cells. Karen Christman, PhD, explains how her team creates injectable hydrogels from pig heart tissue to support heart repair and regeneration after a heart attack. Tiffani Manolis highlights industry support for making cell and gene therapies more accessible. Patient advocate Justin Graves describes his life-changing experience receiving a stem cell-based therapy for epilepsy, underscoring the real-world promise of these innovations. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40705]

5个月前
59分钟
A Closer Look at…Genetic Medicine and Artificial Intelligence

A Closer Look at…Genetic Medicine and Artificial Intelligence

AI and genetic medicine are converging to transform how we diagnose, treat, and prevent disease. Gene Yeo, Ph.D., unites RNA biology with artificial intelligence to speed the path from genome sequencing to personalized RNA therapeutics. Advances in sequencing have reduced costs dramatically, making interpretation and translation into treatments the real challenge. Using deep learning and large datasets of RNA-binding proteins, Yeo predicts disease vulnerabilities and identifies therapeutic targets, including in neurodegeneration and muscular diseases. Alexis Komor, Ph.D., focuses on DNA, explaining human genetic variation—particularly single-nucleotide variants—and how genome editing technologies like CRISPR can target them. She highlights strategies to correct harmful mutations and explores precise, programmable interventions. Together, their research drives discovery and enables more effective, personalized therapies. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40459]

5个月前
57分钟
The Art of Scientific Storytelling

The Art of Scientific Storytelling

Science communication expert Lisa Warshaw and scientist Rob Signer, Ph.D., offer a practical guide to turning complex research into clear, memorable stories. They explain why strong openings, simple messages, vivid analogies, and visual storytelling are essential to making science resonate. The talk includes tips on avoiding jargon, using soundbites effectively, and preparing for high-stakes moments like media interviews and conference Q&As. Warshaw draws on her experience in global biotech and healthcare communications, while Signer shares real-world lessons from academic science and public engagement. Together, they highlight how clarity and creativity can elevate a researcher’s voice, build trust with diverse audiences, and drive impact across fields. The session is filled with actionable insights for scientists aiming to connect their work with the world. Series: "Stem Cell Channel" [Humanities] [Science] [Show ID: 40460]

6个月前
1小时11分钟
Bottom-Up Midbrain-Subthalamic Control of Feeding

Bottom-Up Midbrain-Subthalamic Control of Feeding

UCLA’s Avishek Adhikari, PhD, presents new research on the role of GABAergic neurons in the brain’s periaqueductal gray (PAG) region. Previously studied for their involvement in fear and defensive behaviors, these neurons were found to promote food-seeking behavior when activated—even in fully fed mice. Using calcium imaging and optogenetics, Adhikari’s team discovered that these neurons are active during food approach but suppressed during eating. The effect is stronger for high-value foods like chocolate or crickets and depends on the mouse’s prior experience with that food. A key finding is that these neurons influence behavior through a specific projection to the zona incerta, a subthalamic region. Rather than signaling hunger, this pathway appears to drive food seeking based on reward value, highlighting a new motivational circuit in the brain. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40444]

6个月前
58分钟
3rd Annual Global Astrobiotechnology Hub

3rd Annual Global Astrobiotechnology Hub

The 3rd Annual Global Astrobiotechnology Hub focuses on advancing the intersection of space exploration, biotechnology, and innovation. The program brings together scientists, researchers, and space professionals to discuss how space technologies can accelerate scientific breakthroughs, particularly in fields like personalized medicine and bioengineering. Key themes include the challenges of conducting real-time research in space, the need for specialized astronaut-scientists, and the potential of space for groundbreaking experiments, such as organoid growth and in-space manufacturing. Experts underscore the importance of public access to scientific data and highlight the role of new media in engaging the public with space research. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40389]

8个月前
1小时26分钟
Stem Cells and Science in Space - Medicine Informing Novel Discoveries (MIND)

Stem Cells and Science in Space - Medicine Informing Novel Discoveries (MIND)

Scientists, leaders, and patients discuss the intersection of cutting-edge science and real-world impact. They explore the importance of patient perspectives in shaping medical advancements and how collaboration fuels groundbreaking research. Key scientific achievements in areas like regenerative medicine, cancer therapies, and space biology are highlighted. The group emphasizes the need for scientists to engage more with the public—through social media and media appearances—to help people understand and value the life-changing discoveries in science. Featuring: Catriona Jamieson, M.D., Ph.D. UC San Diego Sandra Dillon Patient Advocate Alexander Khalessi, M.D., M.B.A. UC San Diego Jana Stoudemire Celestial Strategy, LLC Alysson Muotri, Ph.D. UC San Diego Rebecca Moores Philanthropist and Patient Advocate Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40519]

8个月前
1小时12分钟
Uncovering Mechanisms of Neurodegenerative Diseases by CRISPR-Based Screens with Martin Kampmann

Uncovering Mechanisms of Neurodegenerative Diseases by CRISPR-Based Screens with Martin Kampmann

Martin Kampmann, Ph.D., explores how CRISPR screening and induced pluripotent stem cell (iPSC) technology can uncover new insights into neurological diseases such as Alzheimer's. His lab uses CRISPR to identify genes that influence protein aggregation and cellular vulnerability, focusing on neurons, astrocytes, and microglia derived from human stem cells. Kampmann highlights the roles of mitochondria, autophagy, and other cellular pathways in disease progression, emphasizing the importance of understanding both protective and damaging processes. He also discusses the potential contributions of glial cells—especially microglia and astrocytes—to neurodegeneration, sparking ideas for therapeutic targets. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39461]

12个月前
58分钟
A Closer Look at…Stem Cells and the Human Brain

A Closer Look at…Stem Cells and the Human Brain

Frank Furnari, Ph.D., and Alexander Khalessi, M.D., M.B.A., discuss exciting advancements in brain cancer research, focusing on glioblastoma, an aggressive and challenging tumor. They highlight how specific genetic mutations drive tumor growth and how targeting these mutations could lead to new treatments. They also delve into cutting-edge therapies, including using light to activate drugs aimed at combating cancer. A central theme of the talk is the complexity and ever-changing nature of these tumors, which makes them difficult to treat. However, technological breakthroughs, like single-cell genetic sequencing and lab-grown tumor models, are providing scientists with valuable insights into tumor behavior, paving the way for more personalized and effective treatment options in the future. Series: "Stem Cell Channel" [Health and Medicine] [Show ID: 39871]

2024/12/23
57分钟
A Tale of Two Barriers: Plasticity of Lung Epithelium and Mesothelium

A Tale of Two Barriers: Plasticity of Lung Epithelium and Mesothelium

Le Xu, Ph.D., examines the intricate processes underlying lung development and disease, with a focus on idiopathic pulmonary fibrosis (IPF). Xu explores the roles of genetic and cellular mechanisms, including the hedgehog pathway, FGF signaling, and epithelial-mesenchymal interactions, in driving lung fibrosis. Xu also highlights links between congenital diaphragmatic hernia (CDH) and lung development, suggesting that both mechanical and genetic factors contribute to lung hypoplasia. The discussion includes the development of advanced mouse models that replicate key aspects of human IPF, offering insights into fibrosis progression. Xu's research ultimately seeks to identify the causes of lung tissue abnormalities and pave the way for targeted therapies. Series: "Stem Cell Channel" [Health and Medicine] [Show ID: 39460]

2024/12/18
58分钟
Restoration of T Cell Development in CD3δ SCID Through Adenine Base-Editing with Gloria Yiu - Sanford Stem Cell Symposium 2024

Restoration of T Cell Development in CD3δ SCID Through Adenine Base-Editing with Gloria Yiu - Sanford Stem Cell Symposium 2024

Gloria Yiu, M.D., Ph.D., delves into the transformative potential of genetic editing technologies in addressing rare immune disorders, with a focus on CD3δ severe combined immunodeficiency (SCID)—a condition characterized by impaired T-cell development and severely compromised immune function. Leveraging her expertise as a physician-scientist, Yiu explores how CRISPR and other precision gene-editing tools can correct genetic mutations at the cellular level, potentially restoring T-cell production and immune resilience in patients with CD3δ SCID. Her presentation underscores the challenges and breakthroughs in treating such life-threatening conditions, emphasizing the role of interdisciplinary research, clinical innovation, and ethical considerations in advancing the frontiers of personalized medicine. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 40245]

2024/12/2
28分钟
What Makes a Stem Cell a Stem Cell and How Does it Go Bad? with John Dick - Sanford Stem Cell Symposium 2024

What Makes a Stem Cell a Stem Cell and How Does it Go Bad? with John Dick - Sanford Stem Cell Symposium 2024

John Dick, Ph.D., F.R.S., explores the role of CD83, a molecule found in blood stem cells, in how these cells respond to inflammation. His team demonstrates that CD83 becomes highly active during inflammation and contributes to the loss of healthy stem cells. Using advanced gene-editing tools, they show that removing CD83 protects stem cells from inflammation-related damage. This discovery highlights CD83 as a potential marker for identifying inflamed stem cells and as a possible target for treatments to improve recovery after stem cell transplants. He also discusses early findings on potential differences in blood stem cell behavior between men and women and raises questions about how inflammation from severe illnesses, like COVID-19, could impact the blood system as we age. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39949]

2024/11/25
45分钟
Space-Based Research: Predicting and Preventing Accelerated Stem Cell Aging and Cancer Evolution with Catriona Jamieson - Sanford Stem Cell Symposium 2024

Space-Based Research: Predicting and Preventing Accelerated Stem Cell Aging and Cancer Evolution with Catriona Jamieson - Sanford Stem Cell Symposium 2024

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]

2024/11/18
28分钟
Explorations of Telomere Biology in the Context of Human Aging with Elizabeth Blackburn - Sanford Stem Cell Symposium 2024

Explorations of Telomere Biology in the Context of Human Aging with Elizabeth Blackburn - Sanford Stem Cell Symposium 2024

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]

2024/11/8
45分钟
Found in Translation: Development of a Cellular Therapy for Age-Related Macular Degeneration

Found in Translation: Development of a Cellular Therapy for Age-Related Macular Degeneration

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]

2024/11/4
1小时12分钟
Bioengineering a Kidney Chip for Better Safer and Faster Drug Development

Bioengineering a Kidney Chip for Better Safer and Faster Drug Development

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]

2024/9/25
1小时11分钟