Lenti-X 293T Cell Line

Clontech’s lentiviral packaging system (Panel A) and a lentiviral packaging system from a leading competitor (Panel B) were each used to generate viral supernatants from their respective lentiviral system vectors that were engineered to express the ZsGreen1 fluorescent protein

Clontech’s lentiviral packaging system (Panel A) and a lentiviral packaging system from a leading competitor (Panel B) were each used to generate viral supernatants from their respective lentiviral system vectors that were engineered to express the ZsGreen1 fluorescent protein. As little as 10 µl of supernatant from Lenti-X transduced the majority of these HeLa cells, whereas 10 µl of supernatant from the other system transduced only a small percentage of the cells. Transduced cells were quantified by flow cytometry.

Transduction of neural progenitor cells by Lenti-X lentivirus

Transduction of neural progenitor cells by Lenti-X lentivirus. Recombinant lentivirus for expressing ZsGreen1 was produced using Lenti-X virus and used to transduce normal human neural progenitor cells. A single transduced cell is shown under phase contrast microscopy (Panel A) and fluorescence microscopy (Panel B).

High-titer lentivirus production

High-titer lentivirus production. Lenti-X 293T cells were transduced with the indicated volumes (µl) of lentiviral packaging supernatant generated with the Lenti-X Expression System and then selected with puromycin for 9 days to allow the formation of the resistant colonies, which were then stained with crystal violet.

293T cell line for higher titers

293T cell line for higher titers. We used our fourth-generation lentiviral packaging system and one of our pLVX-lentiviral vectors to compare the virus production of the Lenti-X 293T Cell Line to that of two other commonly used HEK 293-based cell lines. Lenti-X 293T cells clearly outperformed the other cell lines—producing over 6X more virus than 293FT cells and up to 30X more virus than the parental HEK 293 cell line.