Season 8 Episode 17: Ultrasound CRISPR and Senior Dog Accidents

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You can edit genes with CRISPR, but can you control it like a switch, turning it on only in one small part of the brain, at one exact moment, without surgery? We dig into a fascinating proof of concept study where researchers combine a photo activated CRISPR system with mechanoluminescent particles, then use focused ultrasound to trigger light emission inside the body. The ultrasound does not edit DNA itself, but it can precisely activate the editor where the beam is focused, which is the kind of spatiotemporal control gene therapy has been missing.

We also slow down and talk honestly about what this does and does not mean. The work is in mice, and it is not a cure for a specific disease yet. Safety, immune reactions, editing accuracy, and off target effects matter even more when the target is the brain. Still, the direction is clear: more targeted CRISPR therapeutics for neurological disease, and a lot more conversations about where treatment ends and enhancement begins.

Then we switch over to pet science and senior dog health. When an older dog starts having accidents in the house, most of us think UTI, kidney issues, diabetes, pain, or mobility problems. A study following 84 senior dogs suggests house soiling can also be associated with worse performance on certain cognitive tasks, raising the possibility that it can be one clue of canine cognitive dysfunction syndrome when medical causes are ruled out.


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