Position‐independent, high‐level, and correct regional expression of the rat aldolase C gene in the central nervous system of transgenic mice

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Abstract
Aldolase C is mainly expressed in the central nervous system (CNS). To clarify the regulatory mechanisms for the CNS-specific expression, transgenic mice were created using two constructs of the rat aldolase C gene. A fusion gene comprising the 5' regulatory region of the aldolase C gene was expressed in a CNS-specific manner. However, the expression levels and the cellular localization of the gene varied among transgenic mice. The other construct, including both 5' and 3' regulatory regions of the gene, showed position-independent and high-level expression as well as the correct regional distribution in the CNS. These results indicate that the 13-kb sequence of the rat aldolase C gene contains sufficient information for faithful expression of the gene.