AAV with ApoE/hAAT1 promoter driven Cre Inducible Venus

This AAV expresses DIO-Venus driven by a liver ApoE/hAAT1 promoter.

The ApoE/AAT1 chimeric promoter consists of the core promoter from human alpha-1-antitrypsin gene (also known as hAAT1, SERPINA1, A1A, A1AT, AAT, or alpha1AT) and the enhancer/hepatic locus control region (HCR) from the ApoE gene. The ApoE-hAAT1 chimeric promoter is about 0.7Kb and is used for driving gene expression in hepatocytes

In the DIO scenario, the transgene of interest is inserted in reverse orientation relative to the 5' promoter and is flanked by oppositely oriented loxP and lox2272 sites. In the absence of Cre expression, the transgene will not be produced. In the presence of Cre expression, the transgene will be "FLip-EXchanged" or FLEXed, leading to expression of the transgene. This is due to a permanent Cre-mediated recombination/inversion of the flanked transgene. This arrangement is called DIO (double-floxed inverse ORF), Cre-ON, Flex-rev (reverse), Flex-ON/FlexON, or DIO-AAV/AAV-DIO (double-floxed inverse ORF in AAV).