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Exosome trypanosoma cruzi

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https://www.readbyqxmd.com/read/27921011/mechanisms-of-infectivity-and-evasion-derived-from-microvesicles-cargo-produced-by-trypanosoma-cruzi
#1
REVIEW
Bruna C Borges, Isadora A Uehara, Laysa O S Dias, Paula C Brígido, Claudio V da Silva, Marcelo J B Silva
Cell invasion by the intracellular protozoans requires interaction of proteins from both the host and the parasite. Many parasites establish chronic infections, showing they have the potential to escape the immune system; for example, Trypanosoma cruzi is an intracellular parasite that causes Chagas disease. Parasite internalization into host cell requires secreted and surface molecules, such as microvesicles. The release of microvesicles and other vesicles, such as exosomes, by different eukaryotic organisms was first observed in the late twentieth century...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/24906990/trypanosoma-cruzi-secreted-vesicles-have-acid-and-alkaline-phosphatase-activities-capable-of-increasing-parasite-adhesion-and-infection
#2
Roberta F C Neves, Anne C S Fernandes, José R Meyer-Fernandes, Thais Souto-Padrón
Trypanosoma cruzi virulence factors include molecules expressed on the cell surface as well as those secreted or shed into the extracellular medium. Phosphatase activities modulate different aspects of T. cruzi infection, although no studies to date addressed the presence and activity of phosphatases in vesicles secreted by this parasite. Here, we characterized acidic and alkaline secreted phosphatase activities of human-infective trypomastigote forms of T. cruzi from the Y strain and the CL-Brener clone. These are widely studied T...
August 2014: Parasitology Research
https://www.readbyqxmd.com/read/24406102/the-role-of-extracellular-vesicles-in-plasmodium-and-other-protozoan-parasites
#3
REVIEW
Pierre-Yves Mantel, Matthias Marti
Protozoan parasites and other microorganisms use various pathways to communicate within their own populations and to manipulate their outside environments, with the ultimate goal of balancing the rate of growth and transmission. In higher eukaryotes, including humans, circulating extracellular vesicles are increasingly recognized as key mediators of physiological and pathological processes. Recent evidence suggests that protozoan parasites, including those responsible for major human diseases such as malaria and Chagas disease, use similar machinery...
March 2014: Cellular Microbiology
https://www.readbyqxmd.com/read/23214914/proteomic-analysis-of-trypanosoma-cruzi-secretome-characterization-of-two-populations-of-extracellular-vesicles-and-soluble-proteins
#4
Ethel Bayer-Santos, Clemente Aguilar-Bonavides, Silas Pessini Rodrigues, Esteban Maurício Cordero, Alexandre Ferreira Marques, Armando Varela-Ramirez, Hyungwon Choi, Nobuko Yoshida, José Franco da Silveira, Igor C Almeida
Microorganisms use specialized systems to export virulence factors into host cells. Secretion of effector proteins into the extracellular environment has been described in Trypanosoma cruzi; however, a comprehensive proteomic analysis of the secretome and the secretion mechanisms involved remain elusive. Here, we present evidence that T. cruzi releases proteins associated with vesicles that are formed by at least two different mechanisms. Transmission electron microscopy showed larger vesicles budding from the plasma membrane of noninfective epimastigotes and infective metacyclic trypomastigotes, as well as smaller vesicles within the flagellar pocket of both forms...
February 1, 2013: Journal of Proteome Research
https://www.readbyqxmd.com/read/22079376/mammalian-cell-invasion-by-closely-related-trypanosoma-species-t-dionisii-and-t-cruzi
#5
Fernando Yukio Maeda, Cristian Cortez, Renan Melatto Alves, Nobuko Yoshida
Protozoan parasites of the genus Trypanosoma can infect virtually all mammalian species. Within this genus, Trypanosoma dionisii from bats and Trypanosoma cruzi that causes Chagas' disease, belonging to the subgenus Schizotrypanum, can invade mammalian cells. The mechanisms of cell invasion by T. dionisii are poorly understood. To address that question, metacyclic trypomastigotes (MT) and human epithelial HeLa cells were used. Similarly to genetically divergent T. cruzi strains G (TcI) and CL (TcVI), associated, respectively with marsupial and human infections, T...
February 2012: Acta Tropica
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