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M3i
Modèles Insectes d’Immunité Innée
Publications
2020
Volohonsky Gloria, Paul-Gilloteaux Perrine, Stafkova Jitka, Soichot Julien, Salamero Jean, Levashina Elena A.
Kinetics of Plasmodium midgut invasion in Anopheles mosquitoes Article de journal
Dans: PLoS Pathog, vol. 16, non 9, 2020, ISSN: 1553-7374.
Résumé | Liens | BibTeX | Étiquettes: Anopheles, M3i, Malaria, marois, midgut, Plasmodium
@article{volohonsky_plasmodium_2020,
title = {Kinetics of Plasmodium midgut invasion in Anopheles mosquitoes},
author = {Gloria Volohonsky and Perrine Paul-Gilloteaux and Jitka Stafkova and Julien Soichot and Jean Salamero and Elena A. Levashina
},
editor = {Kenneth D. Vernick, Institut Pasteur, FRANCE},
url = {https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1008739},
doi = {10.1371/journal.ppat.1008739},
issn = {1553-7374},
year = {2020},
date = {2020-09-18},
journal = {PLoS Pathog},
volume = {16},
number = {9},
abstract = {The traversal of the mosquito midgut cells is one of the critical stages in the life cycle of malaria parasites. Motile parasite forms, called ookinetes, traverse the midgut epithelium in a dynamic process which is not fully understood. Here, we harnessed transgenic reporters to track invasion of Plasmodium parasites in African and Indian mosquito species. We found important differences in parasite dynam- ics between the two Anopheles species and demonstrated a role of the mosquito comple- ment-like system in regulation of parasite invasion of the midgut cells.},
keywords = {Anopheles, M3i, Malaria, marois, midgut, Plasmodium},
pubstate = {published},
tppubtype = {article}
}
The traversal of the mosquito midgut cells is one of the critical stages in the life cycle of malaria parasites. Motile parasite forms, called ookinetes, traverse the midgut epithelium in a dynamic process which is not fully understood. Here, we harnessed transgenic reporters to track invasion of Plasmodium parasites in African and Indian mosquito species. We found important differences in parasite dynam- ics between the two Anopheles species and demonstrated a role of the mosquito comple- ment-like system in regulation of parasite invasion of the midgut cells.
2017
Volohonsky Gloria, Hopp Ann-Katrin, Saenger Mélanie, Soichot Julien, Scholze Heidi, Boch Jens, Blandin Stéphanie A, Marois Eric
Transgenic Expression of the Anti-parasitic Factor TEP1 in the Malaria Mosquito Anopheles gambiae Article de journal
Dans: PLOS Pathogens, vol. 13, non 1, p. e1006113, 2017, ISSN: 1553-7374.
Liens | BibTeX | Étiquettes: Anopheles gambiae, anti-parasitic factor, blandin, M3i, Malaria, marois, TEP1, transgenic
@article{volohonsky_transgenic_2017,
title = {Transgenic Expression of the Anti-parasitic Factor TEP1 in the Malaria Mosquito Anopheles gambiae},
author = {Gloria Volohonsky and Ann-Katrin Hopp and Mélanie Saenger and Julien Soichot and Heidi Scholze and Jens Boch and Stéphanie A Blandin and Eric Marois},
editor = {Kenneth D Vernick},
url = {http://dx.plos.org/10.1371/journal.ppat.1006113},
doi = {10.1371/journal.ppat.1006113},
issn = {1553-7374},
year = {2017},
date = {2017-01-01},
urldate = {2017-02-01},
journal = {PLOS Pathogens},
volume = {13},
number = {1},
pages = {e1006113},
keywords = {Anopheles gambiae, anti-parasitic factor, blandin, M3i, Malaria, marois, TEP1, transgenic},
pubstate = {published},
tppubtype = {article}
}
2004
Blandin Stephanie A, Shiao Shin-Hong, Moita Luis F, Janse Chris J, Waters Andrew P, Kafatos Fotis C, Levashina Elena A
Complement-like protein TEP1 is a determinant of vectorial capacity in the malaria vector Anopheles gambiae Article de journal
Dans: Cell, vol. 116, non 5, p. 661–670, 2004, ISSN: 0092-8674.
Résumé | BibTeX | Étiquettes: Animals, Anopheles, blandin, Female, Genetic, Humans, Insect Proteins, Insect Vectors, M3i, Malaria, Models, Molecular, Plasmodium berghei, Polymorphism, Protein Structure, RNA, Sequence Alignment, Tertiary
@article{blandin_complement-like_2004,
title = {Complement-like protein TEP1 is a determinant of vectorial capacity in the malaria vector Anopheles gambiae},
author = {Stephanie A Blandin and Shin-Hong Shiao and Luis F Moita and Chris J Janse and Andrew P Waters and Fotis C Kafatos and Elena A Levashina},
issn = {0092-8674},
year = {2004},
date = {2004-01-01},
journal = {Cell},
volume = {116},
number = {5},
pages = {661--670},
abstract = {Anopheles mosquitoes are major vectors of human malaria in Africa. Large variation exists in the ability of mosquitoes to serve as vectors and to transmit malaria parasites, but the molecular mechanisms that determine vectorial capacity remain poorly understood. We report that the hemocyte-specific complement-like protein TEP1 from the mosquito Anopheles gambiae binds to and mediates killing of midgut stages of the rodent malaria parasite Plasmodium berghei. The dsRNA knockdown of TEP1 in adults completely abolishes melanotic refractoriness in a genetically selected refractory strain. Moreover, in susceptible mosquitoes this knockdown increases the number of developing parasites. Our results suggest that the TEP1-dependent parasite killing is followed by a TEP1-independent clearance of dead parasites by lysis and/or melanization. Further elucidation of the molecular mechanisms of TEP1-mediated parasite killing will be of great importance for our understanding of the principles of vectorial capacity in insects.},
keywords = {Animals, Anopheles, blandin, Female, Genetic, Humans, Insect Proteins, Insect Vectors, M3i, Malaria, Models, Molecular, Plasmodium berghei, Polymorphism, Protein Structure, RNA, Sequence Alignment, Tertiary},
pubstate = {published},
tppubtype = {article}
}
Anopheles mosquitoes are major vectors of human malaria in Africa. Large variation exists in the ability of mosquitoes to serve as vectors and to transmit malaria parasites, but the molecular mechanisms that determine vectorial capacity remain poorly understood. We report that the hemocyte-specific complement-like protein TEP1 from the mosquito Anopheles gambiae binds to and mediates killing of midgut stages of the rodent malaria parasite Plasmodium berghei. The dsRNA knockdown of TEP1 in adults completely abolishes melanotic refractoriness in a genetically selected refractory strain. Moreover, in susceptible mosquitoes this knockdown increases the number of developing parasites. Our results suggest that the TEP1-dependent parasite killing is followed by a TEP1-independent clearance of dead parasites by lysis and/or melanization. Further elucidation of the molecular mechanisms of TEP1-mediated parasite killing will be of great importance for our understanding of the principles of vectorial capacity in insects.
Blandin Stéphanie A, Levashina Elena A
Mosquito immune responses against malaria parasites Article de journal
Dans: Curr. Opin. Immunol., vol. 16, non 1, p. 16–20, 2004, ISSN: 0952-7915.
Résumé | BibTeX | Étiquettes: Animals, Anopheles, blandin, Gene Library, Genes, Hemocytes, Host-Parasite Interactions, Immunity, Innate, Insect, Insect Vectors, M3i, Malaria, Plasmodium
@article{blandin_mosquito_2004,
title = {Mosquito immune responses against malaria parasites},
author = {Stéphanie A Blandin and Elena A Levashina},
issn = {0952-7915},
year = {2004},
date = {2004-01-01},
journal = {Curr. Opin. Immunol.},
volume = {16},
number = {1},
pages = {16--20},
abstract = {Anopheline mosquitoes are the major vectors of human malaria. Mosquito-parasite interactions are a critical aspect of disease transmission and a potential target for malaria control. Mosquitoes vary in their innate ability to support development of the malaria parasite, but the molecular mechanisms that determine vector competence are poorly understood. This area of research has been revolutionized by recent advances in the mosquito genome characterization and by the development of new tools for functional gene analysis.},
keywords = {Animals, Anopheles, blandin, Gene Library, Genes, Hemocytes, Host-Parasite Interactions, Immunity, Innate, Insect, Insect Vectors, M3i, Malaria, Plasmodium},
pubstate = {published},
tppubtype = {article}
}
Anopheline mosquitoes are the major vectors of human malaria. Mosquito-parasite interactions are a critical aspect of disease transmission and a potential target for malaria control. Mosquitoes vary in their innate ability to support development of the malaria parasite, but the molecular mechanisms that determine vector competence are poorly understood. This area of research has been revolutionized by recent advances in the mosquito genome characterization and by the development of new tools for functional gene analysis.
2001
Vizioli J, Bulet Philippe, Hoffmann Jules A, Kafatos Fotis C, Müller H M, Dimopoulos G
Gambicin: a novel immune responsive antimicrobial peptide from the malaria vector Anopheles gambiae Article de journal
Dans: Proc. Natl. Acad. Sci. U.S.A., vol. 98, non 22, p. 12630–12635, 2001, ISSN: 0027-8424.
Résumé | Liens | BibTeX | Étiquettes: Animals, Anopheles, Anti-Bacterial Agents, Anti-Infective Agents, Base Sequence, Chromosome Mapping, hoffmann, Insect Proteins, Insect Vectors, M3i, Malaria, messenger, RNA
@article{vizioli_gambicin:_2001,
title = {Gambicin: a novel immune responsive antimicrobial peptide from the malaria vector Anopheles gambiae},
author = {J Vizioli and Philippe Bulet and Jules A Hoffmann and Fotis C Kafatos and H M Müller and G Dimopoulos},
doi = {10.1073/pnas.221466798},
issn = {0027-8424},
year = {2001},
date = {2001-10-01},
journal = {Proc. Natl. Acad. Sci. U.S.A.},
volume = {98},
number = {22},
pages = {12630--12635},
abstract = {A novel mosquito antimicrobial peptide, gambicin, and the corresponding gene were isolated in parallel through differential display-PCR, an expressed sequence tag (EST) project, and characterization of an antimicrobial activity in a mosquito cell line by reverse-phase chromatography. The 616-bp gambicin ORF encodes an 81-residue protein that is processed and secreted as a 61-aa mature peptide containing eight cysteines engaged in four disulfide bridges. Gambicin lacks sequence homology with other known proteins. Like other Anopheles gambiae antimicrobial peptide genes, gambicin is induced by natural or experimental infection in the midgut, fatbody, and hemocyte-like cell lines. Within the midgut, gambicin is predominantly expressed in the anterior part. Both local and systemic gambicin expression is induced during early and late stages of natural malaria infection. In vitro experiments showed that the 6.8-kDa mature peptide can kill both Gram-positive and Gram-negative bacteria, has a morphogenic effect on a filamentous fungus, and is marginally lethal to Plasmodium berghei ookinetes. An oxidized form of gambicin isolated from the cell line medium was more active against bacteria than the nonoxidized form from the same medium.},
keywords = {Animals, Anopheles, Anti-Bacterial Agents, Anti-Infective Agents, Base Sequence, Chromosome Mapping, hoffmann, Insect Proteins, Insect Vectors, M3i, Malaria, messenger, RNA},
pubstate = {published},
tppubtype = {article}
}
A novel mosquito antimicrobial peptide, gambicin, and the corresponding gene were isolated in parallel through differential display-PCR, an expressed sequence tag (EST) project, and characterization of an antimicrobial activity in a mosquito cell line by reverse-phase chromatography. The 616-bp gambicin ORF encodes an 81-residue protein that is processed and secreted as a 61-aa mature peptide containing eight cysteines engaged in four disulfide bridges. Gambicin lacks sequence homology with other known proteins. Like other Anopheles gambiae antimicrobial peptide genes, gambicin is induced by natural or experimental infection in the midgut, fatbody, and hemocyte-like cell lines. Within the midgut, gambicin is predominantly expressed in the anterior part. Both local and systemic gambicin expression is induced during early and late stages of natural malaria infection. In vitro experiments showed that the 6.8-kDa mature peptide can kill both Gram-positive and Gram-negative bacteria, has a morphogenic effect on a filamentous fungus, and is marginally lethal to Plasmodium berghei ookinetes. An oxidized form of gambicin isolated from the cell line medium was more active against bacteria than the nonoxidized form from the same medium.
1997
Hoffmann Jules A
Immune responsiveness in vector insects Article de journal
Dans: Proc. Natl. Acad. Sci. U.S.A., vol. 94, non 21, p. 11152–11153, 1997, ISSN: 0027-8424.
BibTeX | Étiquettes: Animals, Anopheles, bacteria, Blood Proteins, Defensins, hoffmann, Humans, Insect Vectors, Life Cycle Stages, M3i, Malaria, Mammals, Plasmodium
@article{hoffmann_immune_1997,
title = {Immune responsiveness in vector insects},
author = {Jules A Hoffmann},
issn = {0027-8424},
year = {1997},
date = {1997-10-01},
journal = {Proc. Natl. Acad. Sci. U.S.A.},
volume = {94},
number = {21},
pages = {11152--11153},
keywords = {Animals, Anopheles, bacteria, Blood Proteins, Defensins, hoffmann, Humans, Insect Vectors, Life Cycle Stages, M3i, Malaria, Mammals, Plasmodium},
pubstate = {published},
tppubtype = {article}
}