Microarray analysis of a pyrethroid resistant African malaria vector, Anopheles funestus, from southern Africa

R.N. Christian, C. Strode, H. Ranson, N. Coetzer, M. Coetzee, L.L. Koekemoer

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Anopheles funestus is one of the major malaria vectors in southern Africa and several populations in this region are resistant to pyrethroids. The current study uses a microarray based approach to identify genes up-regulated in the pyrethroid resistant population, FUMOZ, from Mozambique. As the full set of detoxification genes in A. funestus are unknown, this study investigated the utility of the Anopheles gambiae ‘detox chip’ to screen for differentially expressed detoxification genes in A. funestus. Differential expression of detoxification genes in 3 day old adult females and males from the FUMOZ resistant strain and the FANG susceptible strain was identified using the A. gambiae ‘detox chip’. After optimization of the hybridization conditions, over 90% of the probes showed a positive signal. Only three genes were significantly (p < 0.001) differentially expressed in the females, CYP6P9 (5.4-fold), COI (2.7-fold) and CYP6M7 (1.8-fold). The same genes were also significantly differentially expressed in the adult males, CYP6P9 (6.0-fold), COI (2.9-fold) and CYP6M3 (3.6-fold) together with an additional 21 transcripts. Quantitative PCR (qPCR) analysis was conducted to validate the microarray results. This study demonstrated that heterologous hybridization is a helpful tool in identifying detoxification genes differentially expressed in A. funestus strains.
Original languageEnglish
Pages (from-to)140-147
JournalPesticide Biochemistry and Physiology
Volume99
Issue number2
DOIs
Publication statusPublished - 2011

Fingerprint

Anopheles funestus
Southern Africa
Pyrethrins
Anopheles
Microarray Analysis
pyrethrins
malaria
Malaria
Genes
Anopheles gambiae
genes
Mozambique
hybridization
Population
quantitative polymerase chain reaction
Gene Expression
Polymerase Chain Reaction

Cite this

Christian, R.N. ; Strode, C. ; Ranson, H. ; Coetzer, N. ; Coetzee, M. ; Koekemoer, L.L. / Microarray analysis of a pyrethroid resistant African malaria vector, Anopheles funestus, from southern Africa. In: Pesticide Biochemistry and Physiology. 2011 ; Vol. 99, No. 2. pp. 140-147.
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Microarray analysis of a pyrethroid resistant African malaria vector, Anopheles funestus, from southern Africa. / Christian, R.N.; Strode, C.; Ranson, H.; Coetzer, N.; Coetzee, M.; Koekemoer, L.L.

In: Pesticide Biochemistry and Physiology, Vol. 99, No. 2, 2011, p. 140-147.

Research output: Contribution to journalArticle

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