Efficient identification of tetR-expressing cell lines for tetracycline-regulated gene expression Ping Song Hwa-Chain Robert Wang* *Corresponding author Financial support: National Institutes of Health,
USA.
The
technology of tetracycline-inducible gene expression has been successfully
used in experimental biology to identify the function and downstream
signaling pathways of an interested gene. It has been significantly
improved to meet the criteria with specificity to exogenous non-toxic
inducers, independent regulation from cellular pathways, and dose-dependent
inducibility and reversibility. However, to establish tetracycline-inducible
gene expression in mammalian cells is still a time-and effort-consuming
process. With a tetracycline-inducible gene expression system T-REx,
we have developed a practical protocol to use the oncogenic H-ras
gene as a dominant reporter gene to increase efficiency in attaining
desired cell lines in which ectopic expression of a particular gene
in cells can be introduced and reversibly induced by the presence
or absence of tetracycline in cultures. |
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