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Related Concept Videos

Symbiosis00:58

Symbiosis

Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...

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Preventing the Spread of Malaria and Dengue Fever Using Genetically Modified Mosquitoes
17:50

Preventing the Spread of Malaria and Dengue Fever Using Genetically Modified Mosquitoes

Published on: July 4, 2007

Fighting malaria with engineered symbiotic bacteria from vector mosquitoes.

Sibao Wang1, Anil K Ghosh, Nicholas Bongio

  • 1Department of Molecular Microbiology and Immunology, Malaria Research Institute, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.

Proceedings of the National Academy of Sciences of the United States of America
|July 18, 2012
PubMed
Summary

Engineered symbiotic bacteria deliver anti-malarial molecules to mosquito midguts, significantly reducing Plasmodium parasite development and prevalence. This strategy offers a novel approach to combat malaria transmission by targeting the parasite within the mosquito vector.

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A Bacterial Oral Feeding Assay with Antibiotic-Treated Mosquitoes
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A Bacterial Oral Feeding Assay with Antibiotic-Treated Mosquitoes

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Last Updated: May 20, 2026

Preventing the Spread of Malaria and Dengue Fever Using Genetically Modified Mosquitoes
17:50

Preventing the Spread of Malaria and Dengue Fever Using Genetically Modified Mosquitoes

Published on: July 4, 2007

Building a Better Mosquito: Identifying the Genes Enabling Malaria and Dengue Fever Resistance in A. gambiae and A. aegypti Mosquitoes
15:03

Building a Better Mosquito: Identifying the Genes Enabling Malaria and Dengue Fever Resistance in A. gambiae and A. aegypti Mosquitoes

Published on: July 4, 2007

A Bacterial Oral Feeding Assay with Antibiotic-Treated Mosquitoes
09:59

A Bacterial Oral Feeding Assay with Antibiotic-Treated Mosquitoes

Published on: September 12, 2020

Area of Science:

  • Microbiology
  • Parasitology
  • Vector Biology

Background:

  • Plasmodium parasites, the causative agents of malaria, undergo critical developmental stages within the mosquito midgut.
  • The mosquito midgut lumen is a shared environment with symbiotic bacteria, presenting an opportunity for intervention.

Purpose of the Study:

  • To engineer symbiotic bacteria to deliver anti-Plasmodium effector molecules into the mosquito midgut lumen.
  • To assess the efficacy of engineered bacteria in rendering mosquitoes refractory to malaria infection.

Main Methods:

  • Utilized the Escherichia coli hemolysin A secretion system for protein delivery by Pantoea agglomerans, a mosquito symbiont.
  • Introduced engineered P. agglomerans strains expressing anti-Plasmodium effector proteins into mosquitoes.
  • Quantified inhibition of Plasmodium falciparum and Plasmodium berghei development and parasite prevalence.

Main Results:

  • Engineered P. agglomerans strains inhibited Plasmodium development by up to 98%.
  • Mosquito parasite prevalence decreased by up to 84% with specific effector molecules like scorpine and (EPIP)(4).
  • Demonstrated successful interference with Plasmodium falciparum development in mosquitoes.

Conclusions:

  • Genetically modified symbiotic bacteria can be effectively used to deliver anti-malarial agents within the mosquito vector.
  • This approach provides a novel strategy for controlling malaria by targeting parasite development in mosquitoes.
  • Engineered symbiotic bacteria represent a promising tool for future malaria control interventions.