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Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

Posted by Kendall Morgan on Feb 24, 2015 2:50:00 PM

CRISPR technology has changed how scientists edit and control genes, but according to the Broad Institute's Silvana Konermann, the first generation of CRISPR-Cas9 plasmids were not designed with gene activation in mind. “We had not managed to create a system to allow us to reliably activate essentially any gene,” she says. The technical leap from mutating and deactivating a gene or genes to selectively activating them with the CRISPR system was a large one.  The question for her then was this: Can you engineer CRISPR-Cas9 activators that work well enough on any gene that they could be used by people with little bioengineering expertise?

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Topics: Plasmid Technology, CRISPR, pooled libraries

Lentiviral CRISPR Libraries Enable Genome-Scale, Knockout Screening

Posted by Kendall Morgan on Feb 20, 2014 11:57:00 AM

It’s clear that CRISPR-Cas9 technology has really changed the game for anyone looking to quickly and easily manipulate specific genes. But what if you want to study genes all across the genome? Two new human lentiviral CRISPR library systems described in companion papers in Science in December were developed as an answer to that question. Additionally, a concurrent Nature Biotechnology article describes the development of a mouse lentiviral CRISPR library. 

“This enables you to do customized genetic modification on a scale that was really not possible before,” said the Broad Institute's Ophir Shalem. “Whole regions of the genome which were not accessible before are now accessible using this technology.”

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Topics: Plasmid Technology, Genome Engineering, CRISPR, pooled libraries

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