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. 1995 Sep 26;92(20):9313–9317. doi: 10.1073/pnas.92.20.9313

Gut-specific transcriptional regulatory elements of the carboxypeptidase gene are conserved between black flies and Drosophila.

B Xiong 1, M Jacobs-Lorena 1
PMCID: PMC40975  PMID: 7568124

Abstract

Millions of people die every year in the tropical world from diseases transmitted by hematophagous insects. Failure of conventional containment measures emphasizes the need for additional approaches, such as transformation of vector insects with genes that restrict vectorial capacity. The availability of an efficient promoter to drive foreign genes in transgenic insects is a necessary tool to test the feasibility of such approach. Here we characterize the putative promoter region of a black fly midgut carboxypeptidase gene and show that these sequences correctly direct the expression of a beta-glucuronidase reporter in Drosophila melanogaster. By histochemical staining and mRNA analysis, we found that the gene is expressed strongly and gut-specifically in the transgenic Drosophila. This gut-specific black fly carboxypeptidase promoter provides a valuable tool for the study of disease vectors.

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