Transgene-mediated suppression of dengue viruses in the salivary glands of the yellow fever mosquito, Aedes aegypti
Autor(es): Mathur, G.; Sanchez-Vargas, I.; Alvarez, D.; Olson, K. E.; Marinotti, O.; James, A. A.
Resumo: Controlled sex-, stage- and tissue-specific expression of antipathogen effector molecules is important for genetic engineering strategies to control mosquito-borne diseases. Adult female salivary glands are involved in pathogen transmission to human hosts and are target sites for expression of antipathogen effector molecules. The Aedes aegypti 30K a and 30K b genes are expressed exclusively in adult female salivary glands and are transcribed divergently from start sites separated by 263 nucleotides. The intergenic, 5'- and 3'-end untranslated regions of both genes are sufficient to express simultaneously two different transgene products in the distal-lateral lobes of the female salivary glands. An antidengue effector gene, membranes no protein (Mnp), driven by the 30K b promoter, expresses an inverted-repeat RNA with sequences derived from the premembrane protein-encoding region of the dengue virus serotype 2 genome and reduces significantly the prevalence and mean intensities of viral infection in mosquito salivary glands and saliva.
Palavras-Chave: Dengue; Mosquito; Salivary glands; Promoter; Transgenesis; Aedes aegypti
Imprenta: Insect Molecular Biology, v. 19, n. 6, p. 753-763, 2010
Identificador do objeto digital: 10.1111/j.1365-2583.2010.01032.x
Descritores: Aedes aegypti - Genome ; Aedes aegypti - RNA ; Aedes aegypti - Public health
Data de publicação: 2010
