AAV with GFAP(0.7) promoter driven roGFP1

This AAV expresses roGFP1 driven by an astrocyte GFAP(0.7) promoter.

This 0.7 Kb novel GFAP promoter was constructed by ligating several key regulatory elements of the 2.2Kb human GFAP promoter. It drives essentially the same expression pattern as the parental 2.2 Kb GFAP promoter but with two-fold greater activity.

roGFP1 is a reduction-oxidation sensitive green fluorescent protein used as a biosensor. Two cysteines were introduced into the beta-barrel structure of GFP; the oxidation state, reduced dithiol or the oxidized disulfide, of the engineered thiols determines the fluorescent properties of the sensor. roGFPs (roGFP1 and roGFP2), have two fluorescent excitation maxima at about 400 and 490 nm, respectively and display rapid and reversible ratiometric changes in fluorescence in response to changes in redox potential in vitro and in vivo.