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Phi X 174

Phi X 174

Search complete. 13 mentions across 5 episodes found for "Phi X 174".

Sep 25, 2026

Kevin EsveltGUEST
22:34
So these were existing, an existing family.
Kevin EsveltGUEST
22:37
They trained it on 15,000 different sequenced variants, just a few mutations to quite a few mutations, of this one virus that infects bacteria, Phi X174.
Kevin EsveltGUEST
22:48
And then they had the AI spit out 300 designs for different mutated versions of that virus, and they tested them all, and 16 of them worked, which is an incredible success rate.
Kevin EsveltGUEST
23:04
Now, doesn't necessarily mean that you can apply this to a human virus.
speaker_1HOST
50:02
And they worked with a very simple, well-understood template.
speaker_0HOST
50:06
The Phi X 174 virus.
speaker_1HOST
50:08
Right, which only has about 5,400 to 6,000 base pairs.
speaker_1HOST
50:11
Professor Martha Clokey, a prominent voice in the field, pointed out in our sources that the current results are highly constrained because of this simplicity.
Joshua StarkHOST
0:35
These AI systems were trained on large collections of genetic sequences and then used to generate entirely new versions of bacteriophages, viruses that attack bacteria.
Joshua StarkHOST
0:49
Researchers focused on a well-studied phage called Phi-X174 that infects E. coli.
Joshua StarkHOST
0:58
The AI generated thousands of potential genomes, and researchers selected hundreds for laboratory testing.
Joshua StarkHOST
1:07
Sixteen of the synthetic phages proved to be viable and capable of infecting bacteria.
Kathy SpindlerHOST
44:39
I found, I, I found that surprising, and they, they don't talk about it, and maybe, maybe it's not surprising, but, you know, they say the genomic start sequences of all the Microviridae sequences were highly diverse.
Kathy SpindlerHOST
44:50
All the PhiX174-like-
Vincent RacanielloHOST
44:52
Yeah
Kathy SpindlerHOST
44:52
... genomes started with the same consensus nucleotides.

9 MINS LATER

Vincent RacanielloHOST
54:10
One is the insertion of a new gene J in, in Evo63, extended non-coding regions, the loss of a gene, elongations of genes, swapping of genes.
Vincent RacanielloHOST
54:22
But the origin of replication had no mutations again across all 16 genomes, so you really cannot change that at all.
Vincent RacanielloHOST
54:34
And it, and at the phylogenetic level, these phages are similar to PhiX174-like microviridae, so that is what they wanted it to be.
Vincent RacanielloHOST
54:44
Um, they, they then, uh, wanted to compare it to natural isolates of PhiX174, so they collected a bunch of data sets of natural PhiX-like viruses.
Laurel BristowHOST
1:58
At the beginning of August, something pretty incredible happened.
Laurel BristowHOST
2:01
Scientists published a paper detailing how they created new viruses using artificial intelligence.
speaker_4SOUNDBITE_SPEAKER
2:07
Here's a new addition to the list of things AI can do.
speaker_4SOUNDBITE_SPEAKER
2:10
Create new viruses not found in nature.
speaker_5SOUNDBITE_SPEAKER
2:13
It does sound like something from a sci-fi movie, but this is real.
speaker_5SOUNDBITE_SPEAKER
2:17
A U.S. team have used artificial intelligence to design completely new viruses.
speaker_5SOUNDBITE_SPEAKER
2:23
The good news, they
speaker_6SOUNDBITE_SPEAKER
2:23
say, the 16 new viruses created by AI pose no threat to humans.

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