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Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Am+Chem+Soc 2014 ; 136 (19): 7152-8 Nephropedia Template TP
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Site-Specific Promoter Caging Enables Optochemical Gene Activation in Cells and Animals #MMPMID24802207
Hemphill J; Govan J; Uprety R; Tsang M; Deiters A
J Am Chem Soc 2014[May]; 136 (19): 7152-8 PMID24802207show ga
In cell and molecular biology, double-stranded circular DNA constructs, known as plasmids, are extensively used to express a gene of interest. These gene expression systems rely on a specific promoter region to drive the transcription of genes either constitutively (i.e., in a continually ?ON? state) or conditionally (i.e., in response to a specific transcription initiator). However, controlling plasmid-based expression with high spatial and temporal resolution in cellular environments and in multicellular organisms remains challenging. To overcome this limitation, we have site-specifically installed nucleobase-caging groups within a plasmid promoter region to enable optochemical control of transcription and, thus, gene expression, via photolysis of the caging groups. Through the light-responsive modification of plasmid-based gene expression systems, we have demonstrated optochemical activation of an exogenous fluorescent reporter gene in both tissue culture and a live animal model, as well as light-induced overexpression of an endogenous signaling protein.