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The Anopheles gambiae detoxification chip: A highly specific microarray to study metabolic-based insecticide resistance in malaria vectors

David, Jean-Philippe, Strode, Clare, Vontas, John, Nikou, Dimitra, Vaughan, Ashley, Pignatelli, Patricia, Louis, C., Hemingway, Janet ORCID: https://orcid.org/0000-0002-3200-7173 and Ranson, Hilary ORCID: https://orcid.org/0000-0003-2332-8247 (2005) 'The Anopheles gambiae detoxification chip: A highly specific microarray to study metabolic-based insecticide resistance in malaria vectors'. Proceedings of the National Academy of Sciences of the United States of America, Vol 102, Issue 11, pp. 4080-4084.

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Abstract

Metabolic pathways play an important role in insecticide resistance, but the full spectra of the genes involved in resistance has not been established. We constructed a microarray containing unique fragments from 230 Anopheles gambiae genes putatively involved in insecticide metabolism [cytochrome P450s (P450s), GSTs, and carboxylesterases and redox genes, partners of the P450 oxidative metabolic complex, and various controls]. We used this detox chip to monitor the expression of the detoxifying genes in insecticide resistant and susceptible An. gambiae laboratory strains. Five genes were strongly up-regulated in the dichlorodiphenyltrichloroethane-resistant strain ZAN/U. These genes included the GST GSTE2, which has previously been implicated in dichlorodiphenyltrichloroethane resistance, two P450s, and two peroxidase genes. GSTE2 was also elevated in the pyrethroid-resistant RSP strain. In addition, the P450 CYP325A3, belonging to a class not previously associated with insecticide resistance, was expressed at statistically higher levels in this strain. The applications of this detox chip and its potential contribution to malaria vector insecticide resistance management programs are discussed.

Item Type: Article
Uncontrolled Keywords: mosquito cytochrome p450 gst carboxyl esterase glutathione s-transferases drosophila-melanogaster cytochrome p450s aedes-aegypti genome-wide l. diptera expression gene responses mosquito
Subjects: QW Microbiology and Immunology > Immune Responses > QW 700 Infection. Mechanisms of infection and resistance.
QX Parasitology > Insects. Other Parasites > QX 510 Mosquitoes
QX Parasitology > Insects. Other Parasites > QX 515 Anopheles
QX Parasitology > Insects. Other Parasites > QX 650 Insect vectors
WA Public Health > Preventive Medicine > WA 240 Disinfection. Disinfestation. Pesticides (including diseases caused by)
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 750 Malaria
Faculty: Department: Groups (2002 - 2012) > Vector Group
Digital Object Identifer (DOI): https://doi.org/10.1073/pnas.0409348102
Depositing User: Sarah Lewis-Newton
Date Deposited: 06 Sep 2011 15:55
Last Modified: 06 Feb 2018 13:03
URI: http://archive.lstmed.ac.uk/id/eprint/1951

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