Endocytosis in Trypanosoma cruzi
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چکیده
Endocytic activity is particularly intense in Trypanosoma cruzi epimastigotes, while in amastigotes and trypomastigotes it is untraceable. Cargo molecules enters through the cytostome or flagellar pocket at the parasite anterior region, goes along a branched early endosomal network of tubules and vesicles spread from nuclear periphery to the posterior pole, until delivery to reservosomes, the final compartment. Reservosomes are acid compartments that store protein and lipid cargo and also accumulate lysosomal hydrolases, modulating digestive activity. Although T. cruzi infective forms are unable to uptake molecules, its lysosome related organelles represent a potential targets for anti-parasitic
منابع مشابه
Trypanosoma cruzi Intracellular Amastigotes Isolated by Nitrogen Decompression Are Capable of Endocytosis and Cargo Storage in Reservosomes
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BI-128.De Souza W 1984. Cell biology of Trypanosoma cruzi.Int Rev Cytol 86: 197-285. Engel JC, Doyle PS, Palmer J, Hsieh I, Bainton DF,McKerrow JH 1998. Cysteine protease inhibitorsalter Golgi complex ultrastructure and function in Trypanosoma cruzi. J Cell Sci 111: 597-606.Figueiredo RCBQ, Soares MJ 1996. Low temperatureinhibits the uptake of transferrin-gold complexes ...
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تاریخ انتشار 2010