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How do you modify gene expression? 

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These now make it possible to generate targeted deletions, insertions, gene knock outs, and point variants; to modulate gene expression by targeting transcription factors or epigenetic machineries to DNA; or to target and modify RNA.
Furthermore, it provides a general frame on how to modulate and fine-tune gene expression of a target protein.
Open accessJournal ArticleDOI
01 Jun 2009-Genetics
16 Citations
Modulating gene dose is an effective way to alter protein levels and modify phenotypes to understand gene function.
Gene targeting can be used to create point mutations, duplicate a gene, and modify the expression pattern of a protein almost as easily as creating knockout mice null for a particular protein.
Developing a more "RNA centric" view of gene expression will allow a more systematic understanding of how gene expression and cell function are integrated.
it would be possible to modify and study the expression of a gene in its natural chromosomal position in a whole animal.
It is now possible to modify the expression of essentially any gene or partial gene product in the mouse heart at any time, either gain or loss of function.
These results indicate that the mPing insertion can be used as a genetic tool to modify an expression pattern of a target gene under stress conditions without changing the expression profiles of those under natural conditions.
These findings reveal systematic, multilevel deregulation in gene expression and protein synthesis, showing how this major cellular process declines with age.
Alternatively, we attempted to modify plc expression through a promoter exchange approach but found the gene to be refractory to over-expression indicating that plc expression levels might additionally be tightly controlled.

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