How do personalized gene therapies like CRISPR work?

Imagine your body is like a library full of books, and each book tells your cells what to do, gene therapies are like helpers that can change the words in those books so your body works better.

Think of a gene as one of these books. Sometimes, there’s a typo, a little mistake in the instructions, and that can make your body not work quite right. That’s when CRISPR, a special kind of tool, comes in.

It's like having a pair of scissors that can find exactly where the typo is and cut it out. Then you can put in the correct word, just like fixing a mistake in a sentence. This helps your body make the right proteins again, the ones that help you be healthy.

Imagine you have a robot that helps you build legos. If its instruction book says "put red block on top," but it actually says "put blue block on top" because of a typo, the robot will build the wrong tower. CRISPR can find that mistake and fix it so your robot builds the correct tower, just like how gene therapy helps your body work better!