I am using a retroviral system to transduce primary cells. We already have a working system in the lab using an MMLV-based vector together with the platE packaging cell line from Cell biolabs.
cell, and how the silencing of retroviral DNAs is achieved is not yet well characterized. Results: In the current study, we investigated the transcriptional silencing dynamics in stem cells by independently monitoring the expression of two Moloney murine leukemia virus (MMLV) retroviral vectors newly introduced into embryonic carcinoma (EC) cells.
Studies comparing the lentivirus HIV and the retrovirus MMLV indicate that the viral integrase plays a role in shaping integration site preferences. A major cellular determinant is LEDGF/p75, a lentiviral tethering protein that recruits the pre-integration complex to transcriptional mmlv retroviral vector units and facilitates integration.
a conventional MMLV retroviral vector and a vector designed to allow in vitro transcription of the retroviral genome by T7 RNA polymerase. When the conventional retroviral vector was transfected into packaging cells, the expression cassette drove strong GFP expression, but no infe ctious retrovirus was produced. Introduction of
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