Copy number variation (CNV) and insecticide resistance in mosquitoes: evolving knowledge or an evolving problem?

Autor: Weetman D; Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK. Electronic address: david.weetman@lstmed.ac.uk., Djogbenou LS; Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK; Institut Régional de Santé Publique/Université d'Abomey-Calavi, Ouidah, Benin., Lucas E; Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK.
Jazyk: angličtina
Zdroj: Current opinion in insect science [Curr Opin Insect Sci] 2018 Jun; Vol. 27, pp. 82-88. Date of Electronic Publication: 2018 Apr 13.
DOI: 10.1016/j.cois.2018.04.005
Abstrakt: Copy number variation (CNV) in insect genomes is a rich source of potentially adaptive polymorphism which may help overcome the constraints of purifying selection on conserved genes and/or permit elevated transcription. Classic studies of amplified esterases and acetylcholinesterase duplication in Culex pipiens quantified evolutionary dynamics of CNV driven by insecticidal selection. A more complex and potentially medically impactful form of CNV is found in Anopheles gambiae, with both heterogeneous duplications and homogeneous amplifications strongly linked with insecticide resistance. Metabolic gene amplification, revealed by shotgun sequencing, appears common in Aedes aegypti, but poorly understood in other mosquito species. Many methodologies have been used to detect CNV in mosquitoes, but relatively few can detect both duplications and amplifications, and contrasting methods should be combined. Genome scans for CNV have been rare to date in mosquitoes, but offer immense potential to determine the overall role of CNV as a component of resistance mechanisms.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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