AAV with GFAP(2.2) promoter driven TdTomato

This AAV expresses TdTomato driven by an astrocyte GFAP(2.2) promoter.

The GFAP(2.2) promoter is based on human glial fibrillary acidic protein gene (GFAP), which is the major intermediate filament protein in astrocytes. It has been shown that approximately 2 kb of 5'-flanking DNA of the human GFAP gene is sufficient to direct transgene expression to astrocytes and confer developmental/injury-induced regulation.

dTomato belongs to a family of fluorescent proteins called mFruit. Two dTomato units were joined head-to-tail through a linker, yielding a tandem dimer fluorescent protein, tdTomato. The tdTomato derivative is the brightest fluorescent protein yet reported, featuring an orange-red emission maximum at 581nm and is one of the most photo-stable fluorescent proteins. Other fluorescent proteins with similar emission spectra include DsRed, DsRed2, TurboRFP, TagRFP, and TagRFP-T.