Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire

In Côte d'Ivoire, there is a high intensity of pyrethroid resistance in malaria vectors which may threaten successful vector control. Molecular studies of the target site mutation in the voltage-gated sodium channel (VGSC) 1014F show that the gene frequencies of these mutations are high, widely...

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Main Authors: Joseph Chabi, Constant V.A. Edi, Bernard L. Kouassi, Constant N.G. Gbalegba, Armand E. Kouassi, Jackson K.I. Kouame, Yves K.A. Kadio, Firmain N. Yokoly, Louise B. Golou, Janice Gouaméné, Jean-Baptiste Assamoi, Emmanuel Tia, Roseline M. Yapo, Lucien Y. Konan, Roméo N. N’Tamon, Alphonsine A. Koffi, Antoine M. Tanoh, Ndombour Ging-Cissé, Pascal Zinzindohoué, Blaise Kouadio, Patricia L. Yepassis-Zembrou, Seth R. Irish, Cecilia Flatley, Matthew Kirby
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Language:English
Published: Elsevier 2024-01-01
Series:Current Research in Parasitology and Vector-Borne Diseases
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Online Access:http://www.sciencedirect.com/science/article/pii/S2667114X24000542
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author Joseph Chabi
Constant V.A. Edi
Bernard L. Kouassi
Constant N.G. Gbalegba
Armand E. Kouassi
Jackson K.I. Kouame
Yves K.A. Kadio
Firmain N. Yokoly
Louise B. Golou
Janice Gouaméné
Jean-Baptiste Assamoi
Emmanuel Tia
Roseline M. Yapo
Lucien Y. Konan
Roméo N. N’Tamon
Alphonsine A. Koffi
Antoine M. Tanoh
Ndombour Ging-Cissé
Pascal Zinzindohoué
Blaise Kouadio
Patricia L. Yepassis-Zembrou
Seth R. Irish
Cecilia Flatley
Matthew Kirby
author_facet Joseph Chabi
Constant V.A. Edi
Bernard L. Kouassi
Constant N.G. Gbalegba
Armand E. Kouassi
Jackson K.I. Kouame
Yves K.A. Kadio
Firmain N. Yokoly
Louise B. Golou
Janice Gouaméné
Jean-Baptiste Assamoi
Emmanuel Tia
Roseline M. Yapo
Lucien Y. Konan
Roméo N. N’Tamon
Alphonsine A. Koffi
Antoine M. Tanoh
Ndombour Ging-Cissé
Pascal Zinzindohoué
Blaise Kouadio
Patricia L. Yepassis-Zembrou
Seth R. Irish
Cecilia Flatley
Matthew Kirby
author_sort Joseph Chabi
collection DOAJ
description In Côte d'Ivoire, there is a high intensity of pyrethroid resistance in malaria vectors which may threaten successful vector control. Molecular studies of the target site mutation in the voltage-gated sodium channel (VGSC) 1014F show that the gene frequencies of these mutations are high, widely spread across Côte d’Ivoire, and even fixed in some areas. To further characterize insecticide resistance in Côte d’Ivoire beyond target site mutations, the metabolic resistance mechanism was explored. Overexpression of the metabolic enzyme cytochrome CYP6M2, CYP6P3, CYP6P4, and CYP6P5 was investigated in Anopheles gambiae (s.s.) and An. coluzzii collected from 30 insecticide resistance monitoring sites across the country in 2021 and 2022. Quantitative real-time polymerase chain reaction (qRT-PCR) assay was carried out using RNA-later preserved 60 surviving mosquitoes from each site after phenotypic susceptibility tests. Additionally, a subsample of about 100 mosquitoes from each site was identified to species by PCR, and the frequency of the VGSC 1014F and 1014S was determined. All four CYPs were found to be overexpressed in Côte d’Ivoire with at least one CYP statistically significantly overexpressed in 27 of the 30 sites investigated compared to the susceptible An. gambiae (s.s.) Kisumu (P < 0.005). CYP6M2 was overexpressed in 89% of sites and was the sole overexpressed gene in 10 sites, while the overexpression of CYP6P3 was found in only 10 sites. CYP6P4 and CYP6P5 were overexpressed in 16 and 13 sites, respectively. Furthermore, seven sites (Adzopé, Bongouanou, Daloa, Gagnoa, Guiglo Jacqueville, and Sassandra) had overexpression of all four CYPs. Overall, An. coluzzii showed higher overexpression of CYPs than An. gambiae (s.s.). This study highlights the involvement of selected CYPs in insecticide resistance where target site mutation genes are already present, suggesting that insecticide resistance is complex and multifaceted at a molecular level. Where feasible, it may be helpful to include metabolic resistance surveillance to further characterize insecticide resistance.
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spelling doaj-art-aa38d43e7e5e436c9fc04756f96499272024-11-30T07:14:33ZengElsevierCurrent Research in Parasitology and Vector-Borne Diseases2667-114X2024-01-016100223Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’IvoireJoseph Chabi0Constant V.A. Edi1Bernard L. Kouassi2Constant N.G. Gbalegba3Armand E. Kouassi4Jackson K.I. Kouame5Yves K.A. Kadio6Firmain N. Yokoly7Louise B. Golou8Janice Gouaméné9Jean-Baptiste Assamoi10Emmanuel Tia11Roseline M. Yapo12Lucien Y. Konan13Roméo N. N’Tamon14Alphonsine A. Koffi15Antoine M. Tanoh16Ndombour Ging-Cissé17Pascal Zinzindohoué18Blaise Kouadio19Patricia L. Yepassis-Zembrou20Seth R. Irish21Cecilia Flatley22Matthew Kirby23U.S. President’s Malaria Initiative, Evolve Project, Washington DC, USA; Corresponding author.Centre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireU.S. President’s Malaria Initiative, Evolve Project, Abidjan, Cote d’IvoireNational Malaria Control Programme, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireCentre Suisse de Recherches Scientifiques en Côte d’Ivoire, Abidjan, Cote d’IvoireUniversité Alassane Ouattara, Centre d’Entomologie Médicale et Vétérinaire, Abidjan, Cote d’IvoireUniversité Alassane Ouattara, Centre d’Entomologie Médicale et Vétérinaire, Abidjan, Cote d’IvoireInstitut National d’Hygiène Publique, Abidjan, Cote d’IvoireInstitut National d’Hygiène Publique, Abidjan, Cote d’IvoireInstitut National de Sante Publique/Institut Pierre Richet, Bouake, Cote d’IvoireNational Malaria Control Programme, Abidjan, Cote d’IvoireU.S. President’s Malaria Initiative, Evolve Project, Abidjan, Cote d’IvoireU.S. President’s Malaria Initiative, USAID, Abidjan, Cote d’IvoireU.S. President’s Malaria Initiative, USAID, Abidjan, Cote d’IvoireU.S. President’s Malaria Initiative, U.S. Centers for Disease Control and Prevention, Abidjan, Cote d’IvoireU.S. President’s Malaria Initiative, Malaria/Entomology Branch, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USAU.S. President’s Malaria Initiative, Evolve Project, Washington DC, USAU.S. President’s Malaria Initiative, Evolve Project, Washington DC, USAIn Côte d'Ivoire, there is a high intensity of pyrethroid resistance in malaria vectors which may threaten successful vector control. Molecular studies of the target site mutation in the voltage-gated sodium channel (VGSC) 1014F show that the gene frequencies of these mutations are high, widely spread across Côte d’Ivoire, and even fixed in some areas. To further characterize insecticide resistance in Côte d’Ivoire beyond target site mutations, the metabolic resistance mechanism was explored. Overexpression of the metabolic enzyme cytochrome CYP6M2, CYP6P3, CYP6P4, and CYP6P5 was investigated in Anopheles gambiae (s.s.) and An. coluzzii collected from 30 insecticide resistance monitoring sites across the country in 2021 and 2022. Quantitative real-time polymerase chain reaction (qRT-PCR) assay was carried out using RNA-later preserved 60 surviving mosquitoes from each site after phenotypic susceptibility tests. Additionally, a subsample of about 100 mosquitoes from each site was identified to species by PCR, and the frequency of the VGSC 1014F and 1014S was determined. All four CYPs were found to be overexpressed in Côte d’Ivoire with at least one CYP statistically significantly overexpressed in 27 of the 30 sites investigated compared to the susceptible An. gambiae (s.s.) Kisumu (P < 0.005). CYP6M2 was overexpressed in 89% of sites and was the sole overexpressed gene in 10 sites, while the overexpression of CYP6P3 was found in only 10 sites. CYP6P4 and CYP6P5 were overexpressed in 16 and 13 sites, respectively. Furthermore, seven sites (Adzopé, Bongouanou, Daloa, Gagnoa, Guiglo Jacqueville, and Sassandra) had overexpression of all four CYPs. Overall, An. coluzzii showed higher overexpression of CYPs than An. gambiae (s.s.). This study highlights the involvement of selected CYPs in insecticide resistance where target site mutation genes are already present, suggesting that insecticide resistance is complex and multifaceted at a molecular level. Where feasible, it may be helpful to include metabolic resistance surveillance to further characterize insecticide resistance.http://www.sciencedirect.com/science/article/pii/S2667114X24000542Insecticide resistanceAnopheles gambiae (s.s.) Anopheles coluzziiCYPMalariaVector control
spellingShingle Joseph Chabi
Constant V.A. Edi
Bernard L. Kouassi
Constant N.G. Gbalegba
Armand E. Kouassi
Jackson K.I. Kouame
Yves K.A. Kadio
Firmain N. Yokoly
Louise B. Golou
Janice Gouaméné
Jean-Baptiste Assamoi
Emmanuel Tia
Roseline M. Yapo
Lucien Y. Konan
Roméo N. N’Tamon
Alphonsine A. Koffi
Antoine M. Tanoh
Ndombour Ging-Cissé
Pascal Zinzindohoué
Blaise Kouadio
Patricia L. Yepassis-Zembrou
Seth R. Irish
Cecilia Flatley
Matthew Kirby
Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire
Current Research in Parasitology and Vector-Borne Diseases
Insecticide resistance
Anopheles gambiae (s.s.) Anopheles coluzzii
CYP
Malaria
Vector control
title Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire
title_full Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire
title_fullStr Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire
title_full_unstemmed Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire
title_short Level of involvement of four selected cytochrome P450s (CYPs) in pyrethroid-resistant Anopheles gambiae (s.s.) and Anopheles coluzzii across Côte d’Ivoire
title_sort level of involvement of four selected cytochrome p450s cyps in pyrethroid resistant anopheles gambiae s s and anopheles coluzzii across cote d ivoire
topic Insecticide resistance
Anopheles gambiae (s.s.) Anopheles coluzzii
CYP
Malaria
Vector control
url http://www.sciencedirect.com/science/article/pii/S2667114X24000542
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