Brain Balls
Episode
41 min
Read time
2 min
Topics
Productivity, Fundraising & VC, Artificial Intelligence
AI-Generated Summary
Key Takeaways
- ✓Organoid drug testing: Scientists create patient-specific brain organoids with diseases like Timothy syndrome, test hundreds of drug combinations to find effective treatments, then advance successful candidates to clinical trials within years instead of decades of traditional research.
- ✓Assembloid pain research: Researchers connect four organoid types (sensory nerve, spinal cord, thalamus, cortex) into functional circuits, apply capsaicin to trigger pain signals, and map previously invisible neural pathways to develop targeted pain-blocking molecules for human use.
- ✓Clinical trial failure rates: Ninety percent of neurological drug trials fail, rising to ninety-five percent for brain cancer, primarily because mouse models poorly predict human responses. Organoids enable human-specific testing before expensive clinical trials begin.
- ✓Biocomputer efficiency: Cortical Labs creates computers using 800,000 living neurons that consume light-bulb levels of energy versus millions of times more power for equivalent AI computations, potentially solving data center energy consumption problems while raising consciousness questions.
What It Covers
Scientist Madeline Lancaster accidentally discovers how to grow miniature human brain organoids from stem cells, revolutionizing neurological research by enabling direct observation of human brain development and disease progression outside the body.
Key Questions Answered
- •Organoid drug testing: Scientists create patient-specific brain organoids with diseases like Timothy syndrome, test hundreds of drug combinations to find effective treatments, then advance successful candidates to clinical trials within years instead of decades of traditional research.
- •Assembloid pain research: Researchers connect four organoid types (sensory nerve, spinal cord, thalamus, cortex) into functional circuits, apply capsaicin to trigger pain signals, and map previously invisible neural pathways to develop targeted pain-blocking molecules for human use.
- •Clinical trial failure rates: Ninety percent of neurological drug trials fail, rising to ninety-five percent for brain cancer, primarily because mouse models poorly predict human responses. Organoids enable human-specific testing before expensive clinical trials begin.
- •Biocomputer efficiency: Cortical Labs creates computers using 800,000 living neurons that consume light-bulb levels of energy versus millions of times more power for equivalent AI computations, potentially solving data center energy consumption problems while raising consciousness questions.
Notable Moment
When researchers transplanted human brain organoids into rat skulls with blood supply, the human neurons integrated with rat brains and fired electrical signals when scientists tickled the rat whiskers, creating a hybrid being that processes sensory input through human tissue.
Episode Transcript
To everyone who craves a handcrafted treat, let our team member Sephora tell you about a Culver's favorite. We make our thick and creamy fresh frozen custard in small batches all throughout the day, and we mean all day, every day. From our supremely rich shakes and concrete mixers to our freshly scooped dishes and cones, we handcraft every bite to pure perfection. Making you a sweet treat with care is the best part of my day. Come to Culver's and get a taste of our fresh frozen custard. From Wisconsin with love, welcome to delicious. Oh, wait. You're listen k. Alright. K. Alright. You're listening to RadioLab. From WNYC. WNYC. See? Yep. Okay, Lulu. Yeah. We're gonna start today. Mhmm. Back in 2010 in a lab in Vienna. Oh, jumping right in. Yeah. Just picture sort of a lab with microscopes, computers, experiments and often one corner. Hello. Hi, how's it going? Okay. Wearing glasses and a white lab coat is this scientist named Doctor. Madeline Lancaster. Call me Madeline. Okay. Madeline has just finished her PhD and moved to Austria, just joined the lab to start her post doc research. Oh, still sort of making friends. Still trying to make a good impression. Getting to know people, you know, seeing And one of the first things her boss asked her to do was something called a screen. Just basically looking for specific genes in mouse neural stem cells. So that's like baby brain cells of mice? Yeah. Now, she hadn't done exactly this kind of gene screen before. And that's probably why I didn't really, you know, I was kind of naive about it all. But So anyways, so then She got to work. We put this enzyme on. It just cuts Preparing the baby mouse cells. Cells all become loose and apart from each other. That part she'd actually done before, so, you know, easy enough. Yeah. But Then, something she hadn't done before, she needed to get those cells to stick flat to the glass bottom of her dish so that she could do that screen. And to do that, she needed to use special organic proteins as a glue. And I hadn't they hadn't come in yet. I'd ordered them, but they hadn't come in yet. And instead of just, you know, waiting for them to arrive I don't know. I was so anxious to do the experiment. She decided to improvise. And so I just kinda like rummaged through the freezer. Found a random tube with glue like proteins. I don't know how old they were. And anyway, and I used those. Squirted it on the dishes, pipetted in the cells, popped them in the incubator, and went home for the night. Next morning Came in. Took a look in her petri dishes, hoping to see a nice clean clear layer of cells. Like flat on the dish. But instead, everything in there was Really cloudy. Shouldn't be cloudy. Cloudy means those cells are …
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