ArticleBiotechnology progress
Characterization of large transgene integrations in Chinese hamster ovary cells using a bioengineered mammalian transposase.
Article in Biotechnology progress. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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11 authors.
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Abstract
We present the first use of a bioengineered mammalian transposase system derived from Myotis lucifugus (bMLT) for integration of expression vectors into the CHO genome, focusing on GFP and trastuzumab production. Initially, CHO-K1 cells are transfected with a GFP reporter and varying amounts of bMLT DNA or mRNA. GFP expression is monitored over 17 weeks without selective pressure. Transfection efficiency shows around 90% GFP-positive cells, but in control cultures GFP expression disappears after 10 days. In contrast, bMLT-treated cultures maintain stable GFP expression, with a dose-dependent integration efficiency of up to 60%. The highest GFP expression per cell is observed with lower bMLT amounts. Next-generation sequencing analysis reveals multiple integration sites, with 85% correctly integrated sequences. Next, CHO-GS
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