AAV with mIP1 promoter driven Cre Inducible EGFP

This AAV expresses DIO-EGFP driven by an islet mIP1 promoter.

The mouse insulin-I promoter, (m)INS1, mIP-I or mIP1, is a promoter fragment of about 1.2 kb in length from the murine preproinsulin-I gene. It drives transgene expression in beta- cells of the pancreas, in the research field of diabetes and obesity.

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).