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In addition to our in vivo work, we shared our progress in ex vivo cell therapy at ASGCT showing efficient multiplex editing and integration of large DNA sequences with functional gene expression in iPSC-derived NK cells. An exciting achievement indeed! But what does that mean? In this post, we will break down this accomplishment and explain why the details matter. 1) Multiplexing Multiplexing means placing multiple DNA sequences simultaneously. Unlike traditional CRISPR methods, I-PGI is not dependent on double-stranded DNA breaks, meaning we can make multiple edits to the DNA all at once and rapidly create advanced cell therapies. 2) Large DNA Sequences The ability to insert large DNA sequences in a site-specific manner means we can insert healthy copies of genes in the place of broken ones or, in the case of cell therapy, insert multiple genes that help increase the cell's safety and effectiveness. 3) Functional Gene Expression This is the gold-standard assessment of #genetherapy. We achieved functional gene expression, meaning we inserted the gene and assessed the resulting protein's function, showing that it acts as intended. #GeneEditing #CellandGeneTherapy

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