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Expression of a mutated phospholipase A 2 in transgenic Aedes fluviatilis mosquitoes impacts Plasmodium gallinaceum development
Author(s) -
Rodrigues F. G.,
Santos M. N.,
De Carvalho T. X. T.,
Rocha B. C.,
Riehle M. A.,
Pimenta P. F. P.,
Abraham E. G.,
JacobsLorena M.,
Alves de Brito C. F.,
Moreira L. A.
Publication year - 2008
Publication title -
insect molecular biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.955
H-Index - 93
eISSN - 1365-2583
pISSN - 0962-1075
DOI - 10.1111/j.1365-2583.2008.00791.x
Subject(s) - biology , plasmodium gallinaceum , midgut , anopheles gambiae , vector (molecular biology) , plasmodium (life cycle) , avian malaria , virology , transgene , aedes aegypti , aedes albopictus , anopheles , gene , malaria , genetics , parasite hosting , recombinant dna , gametocyte , botany , plasmodium falciparum , immunology , larva , world wide web , computer science
The genetic manipulation of mosquito vectors is an alternative strategy in the fight against malaria. It was previously shown that bee venom phospholipase A 2 (PLA 2 ) inhibits ookinete invasion of the mosquito midgut although mosquito fitness was reduced. To maintain the PLA 2 blocking ability without compromising mosquito biology, we mutated the protein‐coding sequence to inactivate the enzyme while maintaining the protein's structure. DNA encoding the mutated PLA 2 (mPLA 2 ) was placed downstream of a mosquito midgut‐specific promoter ( Anopheles gambiae peritrophin protein 1 promoter, AgPer1) and this construct used to transform Aedes fluviatilis mosquitoes. Four different transgenic lines were obtained and characterized and all lines significantly inhibited Plasmodium gallinaceum oocyst development (up to 68% fewer oocysts). No fitness cost was observed when this mosquito species expressed the mPLA 2 .