Using Stem Cells to Cure Autism, Epilepsy & Schizophrenia | Dr. Sergiu Pașca · Huberman Lab summary

Key takeaways

Autism is a spectrum disorder with complex behavioral characteristics, increasingly prevalent in the population.
Genetic mutations play a significant role in autism, leading to different degrees of severity and treatment responses.
Organoids and assembloids are innovative tools developed from stem cells, allowing researchers to study brain circuits and potential treatments for various neurological disorders.
Ethical considerations must be at the forefront of research using organoids and stem cells to ensure proper consent and messaging to the public.
Research is underway to apply findings from stem cell-derived models to develop therapeutics for autism and other neurological conditions.

Summary

Introduction to Autism and Brain Disorders

Dr. Andrew Huberman welcomes Dr. Sergiu Pașca to discuss significant topics relating to autism, schizophrenia, and brain development. The podcast addresses the rising prevalence of autism, its genetic underpinnings, and innovative tools such as organoids and assembloids to study and possibly treat neurodevelopmental disorders.

Understanding Autism as a Spectrum

Dr. Pașca explains that autism is a complex, behaviorally-defined spectrum disorder that lacks a singular biomarker. He highlights the significant increase in autism diagnoses, with a prevalence now around 3% of the population. Different types of autism exist, ranging from those requiring lifelong care to those that are high-functioning.

Genetic Factors and Treatments

The podcast addresses the evolving understanding of genetic factors in autism, particularly the role of heritable components and specific genetic mutations. Dr. Pașca provides insights into novel treatments being developed for severe cases of autism involving the use of stem cell-derived models.

The Significance of Organoids and Assembloids

Dr. Pașca introduces organoids and assembloids—3D models derived from stem cells that allow the study of human brain circuits in vitro. These structures are instrumental in understanding brain development and dysfunction, providing a platform for examining how cells interact and form networks.

Ethical Considerations and Scientific Implications

The conversation explores the ethical implications of using organoids and stem cells, particularly regarding consent and potential emergent properties of transplanted cells. Dr. Pașca emphasizes the need for careful terminology to avoid misinterpretation in the public sphere.

Future Directions and Clinical Applications

The podcast concludes with a discussion on potential clinical applications of the research being conducted. Dr. Pașca highlights ongoing studies on various neurological disorders, including epilepsy and dystonia, signaling hope for future treatments based on findings from gene therapies and stem cell research.

Show notes

My guest is Dr. Sergiu Pașca, MD, professor of psychiatry and behavioral sciences at Stanford University. We discuss the biology and genetics of autism, why autism diagnoses are increasing and recent progress in using stem cells to understand and treat profound autism and other brain disorders. Dr. Pașca explains “organoids and assembloids”—human stem cell–derived tools he pioneered to study, treat and cure complex brain diseases. We also discuss ethical and safety issues with using gene editing and stem cells in humans.

Read the episode show notes at hubermanlab.com.

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Timestamps

(00:00) Sergiu Pașca

(02:08) Autism Spectrum Disorder, Incidence, Genetics

(07:16) Is Autism More Common in Males?

(09:35) Sponsors: David & Helix Sleep

(11:56) Eye Contact in Babies, Fever; Proposed Causes of Autism; Genes

(18:48) Genetic or Idiopathic Autism Diagnoses, Timothy Syndrome

(21:37) Rise in Autism Diagnoses

(26:46) Cause, Correlation & Neurological Disease; Schizophrenia, Do Vaccines Cause Autism?

(31:34) Global Increase in Autism; Gene Therapy, CRISPR, Follistatin

(41:05) Sponsors: AG1 & BetterHelp

(43:41) Stem Cells, Ethics, Yamanaka Factors, Human Stem Cell Models

(52:03) Umbilical Stem Cells; Stem Cell Injections & Dangers, Autistic Kids

(59:30) Organoids, Modeling Brain Development, Intrinsic Development Timer

(1:12:22) Assembloids, Brain Cell Migration & Circuit Formation, Self-Organization

(1:21:22) Four-Part Assembloid, Sensory Assembloid, Pain Conditions

(1:25:45) Sponsor: Function

(1:27:33) Future Medical Therapies, Cell Banking, Immortalize Tissues, Rejuvenate Cells

(1:34:56) Assembloids & Ethics, Importance of Nomenclature, Science Collaboration & Self-Correction

(1:45:38) Cell Transplantation & Ethics, Timing

(1:55:05) Genetic Testing for Parents, Genetic Penetrance

(2:02:36) Assembloids, Timothy Syndrome, Epilepsy, Schizophrenia, Dystonia

(2:14:30) Scientific Career, Walking, Art, Medical School

(2:20:44) Zero-Cost Support, YouTube, Spotify & Apple Follow & Reviews, Sponsors, YouTube Feedback, Protocols Book, Social Media, Neural Network Newsletter

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