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Turner HC. Cost-effectiveness of a Wolbachia-based replacement strategy for dengue control in Brazil. LANCET REGIONAL HEALTH. AMERICAS 2024; 35:100789. [PMID: 38828283 PMCID: PMC11143882 DOI: 10.1016/j.lana.2024.100789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 04/23/2024] [Accepted: 05/14/2024] [Indexed: 06/05/2024]
Affiliation(s)
- Hugo C. Turner
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
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Han Y, Pu Q, Fan T, Wei T, Xu Y, Zhao L, Liu S. Long non-coding RNAs as promising targets for controlling disease vector mosquitoes. INSECT SCIENCE 2024. [PMID: 38783627 DOI: 10.1111/1744-7917.13383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/10/2024] [Accepted: 04/16/2024] [Indexed: 05/25/2024]
Abstract
Hematophagous female mosquitoes are important vectors of numerous devastating human diseases, posing a major public health threat. Effective prevention and control of mosquito-borne diseases rely considerably on progress in understanding the molecular mechanisms of various life activities, and accordingly, the molecules that regulate the various life activities of mosquitoes are potential targets for implementing future vector control strategies. Many long non-coding RNAs (lncRNAs) have been identified in mosquitoes and significant progress has been made in determining their functions. Here, we present a comprehensive overview of the research advances on mosquito lncRNAs, including their molecular identification, function, and interaction with other non-coding RNAs, as well as their synergistic regulatory roles in mosquito life activities. We also highlight the potential roles of competitive endogenous RNAs in mosquito growth and development, as well as in insecticide resistance and virus-host interactions. Insights into the biological functions and mechanisms of lncRNAs in mosquito life activities, viral replication, pathogenesis, and transmission will contribute to the development of novel drugs and safe vaccines.
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Affiliation(s)
- Yujiao Han
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Qian Pu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Ting Fan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Tianqi Wei
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Yankun Xu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Lu Zhao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Shiping Liu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
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Velez ID, Tanamas SK, Arbelaez MP, Kutcher SC, Duque SL, Uribe A, Zuluaga L, Martínez L, Patiño AC, Barajas J, Muñoz E, Mejia Torres MC, Uribe S, Porras S, Almanza R, Pulido H, O’Neill SL, Santacruz-Sanmartin E, Gonzalez S, Ryan PA, Denton JA, Jewell NP, Dufault SM, Simmons CP, Anders KL. Reduced dengue incidence following city-wide wMel Wolbachia mosquito releases throughout three Colombian cities: Interrupted time series analysis and a prospective case-control study. PLoS Negl Trop Dis 2023; 17:e0011713. [PMID: 38032857 PMCID: PMC10688673 DOI: 10.1371/journal.pntd.0011713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 10/10/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND The introduction of Wolbachia (wMel strain) into Aedes aegypti mosquitoes reduces their capacity to transmit dengue and other arboviruses. Randomised and non-randomised studies in multiple countries have shown significant reductions in dengue incidence following field releases of wMel-infected Ae. aegypti. We report the public health outcomes from phased, large-scale releases of wMel-Ae. aegypti mosquitoes throughout three contiguous cities in the Aburrá Valley, Colombia. METHODOLOGY/PRINCIPAL FINDINGS Following pilot releases in 2015-2016, staged city-wide wMel-Ae. aegypti deployments were undertaken in the cities of Bello, Medellín and Itagüí (3.3 million people) between October 2016 and April 2022. The impact of the Wolbachia intervention on dengue incidence was evaluated in two parallel studies. A quasi-experimental study using interrupted time series analysis showed notified dengue case incidence was reduced by 95% in Bello and Medellín and 97% in Itagüí, following establishment of wMel at ≥60% prevalence, compared to the pre-intervention period and after adjusting for seasonal trends. A concurrent clinic-based case-control study with a test-negative design was unable to attain the target sample size of 63 enrolled virologically-confirmed dengue (VCD) cases between May 2019 and December 2021, consistent with low dengue incidence throughout the Aburrá Valley following wMel deployments. Nevertheless, VCD incidence was 45% lower (OR 0.55 [95% CI 0.25, 1.17]) and combined VCD/presumptive dengue incidence was 47% lower (OR 0.53 [95% CI 0.30, 0.93]) among participants resident in wMel-treated versus untreated neighbourhoods. CONCLUSIONS/SIGNIFICANCE Stable introduction of wMel into local Ae. aegypti populations was associated with a significant and sustained reduction in dengue incidence across three Colombian cities. These results from the largest contiguous Wolbachia releases to-date demonstrate the real-world effectiveness of the method across large urban populations and, alongside previously published results, support the reproducibility of this effectiveness across different ecological settings. TRIAL REGISTRATION NCT03631719.
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Affiliation(s)
- Ivan Dario Velez
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | | | | | | | - Sandra L. Duque
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | - Alexander Uribe
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | - Lina Zuluaga
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | - Luis Martínez
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | | | - Jovany Barajas
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | - Estefanía Muñoz
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | | | - Sandra Uribe
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | - Sandra Porras
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | | | | | | | | | - Sandra Gonzalez
- World Mosquito Program, Universidad de Antioquia, Medellín, Colombia
| | - Peter A. Ryan
- World Mosquito Program, Monash University, Melbourne, Australia
| | - Jai A. Denton
- World Mosquito Program, Monash University, Melbourne, Australia
| | - Nicholas P. Jewell
- Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Suzanne M. Dufault
- Division of Biostatistics, Department of Epidemiology and Biostatistics, University of California, San Francisco, California, United States of America
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