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A mosquito salivary gland protein partially inhibits Plasmodium sporozoite cell traversal and transmission.

Tyler R Schleicher | Jing Yang | Marianna Freudzon | Alison Rembisz | Samuel Craft | Madeleine Hamilton | Morven Graham | Godfree Mlambo | Abhai K Tripathi | Yue Li | Peter Cresswell | Photini Sinnis | George Dimopoulos | Erol Fikrig
Nature communications | 2018

The key step during the initiation of malaria is for motile Plasmodium parasites to exit the host dermis and infect the liver. During transmission, the parasites in the form of sporozoites, are injected together with mosquito saliva into the skin. However, the contribution of vector saliva to sporozoite activity during the establishment of the initial infection of the liver is poorly understood. Here we identify a vector protein by mass spectrometry, with similarity to the human gamma interferon inducible thiol reductase (GILT), that is associated with saliva sporozoites of infected Anopheles mosquitoes and has a negative impact on the speed and cell traversal activity of Plasmodium. This protein, referred to as mosquito GILT (mosGILT) represents an example of a protein found in mosquito saliva that may negatively influence sporozoite movement in the host and could lead to new approaches to prevent malaria.

Pubmed ID: 30046053

Associated grants

  • Agency: NIAID NIH HHS, United States
    Id: R01 AI059167
  • Agency: NIAID NIH HHS, United States
    Id: R01 AI097206
  • Agency: NIH HHS, United States
    Id: S10 OD018521
  • Agency: NIAMS NIH HHS, United States
    Id: T32 AR007016
  • Agency: NIAID NIH HHS, United States
    Id: R01 AI132359

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