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西亚试剂:A reversible gene trap collection empowers haploid genetics

A reversible gene trap collection empowers haploid genetics in human cells

Tilmann Bürckstümmer,  Carina Banning,  Philipp Hainzl,  Richard Schobesberger,  Claudia Kerzendorfer,  Florian M Pauler,  Doris Chen,  Nicole Them,  Fiorella Schischlik,  Manuele Rebsamen,  Michal Smida,  Ferran Fece de la Cruz,  Ana Lapao,  Melissa Liszt,  Benjamin Eizinger,  Philipp M Guenzl,  Vincent A Blomen,  Tomasz Konopka,  Bianca Gapp,  Katja Parapatics,  Barbara Maier,  Johannes Stckl,  Wolfgang Fischl,  Sejla Salic,  M Rita Taba Casari

Knockout collections are invaluable tools for studying model organisms such as yeast. However, there are no large-scale knockout collections of human cells. Using gene-trap mutagenesis in near-haploid human cells, we established a platform to generate and isolate individual 'gene-trapped cells' and used it to prepare a collection of human cell lines carrying single gene-trap insertions. In most cases, the insertion can be reversed. This growing library covers 3,396 genes, one-third of the expressed genome, is DNA-barcoded and allows systematic screens for a wide variety of cellular phenotypes. We examined cellular responses to TNF-α, TGF-β, IFN-γ and TNF-related apoptosis-inducing ligand (TRAIL), to illustrate the value of this unique collection of isogenic human cell lines.