Aug 18, 2026 · 23 min · 10 segments
Send us Fan Mail How Living Human Neurons Are Being Integrated With Computers to Create a New Frontier of Biological Intelligence Key Takeaways…
Researchers start with standard adult cells.
You could use skin scraping, a simple blood draw or even just a hair follicle.
Just a hair follicle.
That's all it takes.
Yeah.
Literally just a hair.
They take these differentiated cells and introduce specific proteins, which are known as transcription
factors.
Transcription factors.
Right.
On a molecular level, these proteins bind to the DNA and essentially turn off the genes that make a skin cell act like a skin cell.
Oh, I see.
And while they do that, they are turning on dormant embryonic genes.
It overrides the cell's current identity, basically reverting it all the way back to a blank slate.
So it's like rewinding the biological tape of the cell's history.
Just, you know, wiping the hard drive clean.
That's a perfect way to picture it, actually.
Pluripotent meaning what exactly?
Pluripotent means they possess the developmental potential to differentiate into almost any tissue type in the human body.
Oh, wow.
Yeah.
But to specifically cultivate a brain organoid, researchers have to construct a highly controlled artificial environment.
They take these iPSCs and place them into an incubator that strictly mimics womb-like conditions.
Which means what, practically speaking?
Researchers start with standard adult cells.
You could use skin scraping, a simple blood draw or even just a hair follicle.
Just a hair follicle.
That's all it takes.
Yeah.
Literally just a hair.
They take these differentiated cells and introduce specific proteins, which are known as transcription
factors.
Transcription factors.
Right.
On a molecular level, these proteins bind to the DNA and essentially turn off the genes that make a skin cell act like a skin cell.
Oh, I see.
And while they do that, they are turning on dormant embryonic genes.
It overrides the cell's current identity, basically reverting it all the way back to a blank slate.
So it's like rewinding the biological tape of the cell's history.
Just, you know, wiping the hard drive clean.
That's a perfect way to picture it, actually.
Pluripotent meaning what exactly?
Pluripotent means they possess the developmental potential to differentiate into almost any tissue type in the human body.
Oh, wow.
Yeah.
But to specifically cultivate a brain organoid, researchers have to construct a highly controlled artificial environment.
They take these iPSCs and place them into an incubator that strictly mimics womb-like conditions.
Which means what, practically speaking?
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