Abstract
Extracellular proteolytic activity was detected in a Leishmania (L.) amazonensis culture supernatant and a 56-kDa protein was purified using (NH4)2SO4 precipitation followed by affinity chromatography on aprotinin–agarose. A rabbit serum obtained against the 56-kDa extracellular serine protease was used in order to analyze its location in L. (L.) amazonensis parasites. Immunocytochemistry studies revealed that the enzyme is mainly found in the flagellar pocket and cytoplasmic vesicles of promastigote forms, whereas in amastigotes, it is located in electron-dense structures resembling megasomes. These results indicate that the 56-kDa serine protease is released into the extracellular environment through the flagellar pocket; and its intracellular location suggests either a correlated enzymatic activity or intracellular trafficking.
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References
Alexander J, Vickerman K (1975) Fusion of host cell secondary lysosomes with the parasitophorous vacuoles of Leishmania. J Protozool 22:502–508
Alves CR, Marzochi MCA, Giovanni De Simone S (1993) Heterogeneity of cysteine protease in Leishmania braziliensis and Leishmania major. Braz J Med Biol Res 26:167–171
Alves CR, Côrte-Real S, De Freitas Rosa M, De Simone SG (2000) Detection of cysteine proteinases using a cross-reactive antiserum. FEMS Microbiol Lett 186:263–267
Barankiewicz J, Dosh HM, Cohen A (1988) Extracellular nucleotide catabolism in human B and T lymphocytes. J Biol Chem 263:7094–7098
Brooks DR, Tetley L, Coombs GH, Mottram JC (2000) Processing and trafficking of cysteine proteases in Leishmania mexicana. J Cell Sci 113:4035–4041
Burleigh BA, Woolsey AM (2002) Cell signaling and Trypanosoma cruzi invasion. Cell Microbiol 4:701–711
Coombs GH, Mottram JC (1997) Proteases in trypanosomatids. In: Hide G, Mottram JC, Coombs GH, Holmes PH (eds)Trypanosomiasis and leishmaniasis. CAB International, London, pp 176–197
Duboise SM, Vannier-Santos MA, Costa-Pinto D, Rivas L, Pan AA, Traub-Cseko Y, De Souza W, McMahon-Pratt D (1994) The biosynthesis, processing, and immunolocalization of Leishmania pifanoi amastigote cysteine proteases. Mol Biochem Parasitol 68:119–132
Kong HH, Kim TH, Chung D-I (2000) Purification and characterization of secretory serine proteases of Acanthamoeba healyi isolated from GAE. J Parasitol 86:12–17
Laemmli UK (1970) Cleavage of structural protein during the assembly of the head of bacteriophage T4. Nature 227:680–685
Landfear SM, Ignatushchenko M (2001) The flagellum and flagellar pocket of trypanosomatids. Mol Biochem Parasitol 115:1–17
Monteiro ACS, Abrahanson M, Lima PCA, Vannier-Santos MA, Scharfstein J (2001) Identification, characterization and localization of chagasin, a tight-binding cysteine protease inhibitor in Trypanosoma cruzi. J Cell Sci 144:3933–3942
Overath P, Stierhof Y-D, Wiese M (1997) Endocytosis and secretion in trypanosomatid parasites—tumultuous traffic in a pocket. Trends Cell Biol 7:27–33
Peters DC, Noble S (1999) Aprotinin: an update of its pharmacology and therapeutic use in open heart surgery and coronary artery bypass surgery. Drugs 57:233–260
Petinate SD, Branquinha MH, Coelho RR, Vermelho AB, Gionanni-De-Simone S (1999) Purification and partial characterization of an extracellular serine proteinase of Streptomyces cyaneus isolated from Brazilian cerrado soil. J Appl Microbiol 87:557–563
Salter JP, Kee-Chong L, Hansell E, Hsieh I, McKerrow JH (2000) Schistosome invasion of human skin and degradation of dermal elastin are mediated by a single serine protease. J Cell Biol 275:38667–38673
Ueda-Nakamura T, Rocha Sampaio MC, Cunha e Silva NL, Trub-Cseko YM, Souza W (2002) Expression and processing of megasome cysteine proteinase during Leishmania amazonensis differentiation. Parasitol Res 88:332–337
Acknowledgements
This work was supported by grants from the Fundação de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ), the Fundação Oswaldo Cruz (FIOCRUZ, PAPES) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). We are grateful indebted to Mr. G. Alves for technical assistance on Leishmania cultures.
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Silva-Lopez, R.E., Morgado-Díaz, J.A., Alves, C.R. et al. Subcellular localization of an extracellular serine protease in Leishmania (Leishmania) amazonensis . Parasitol Res 93, 328–331 (2004). https://doi.org/10.1007/s00436-004-1144-2
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DOI: https://doi.org/10.1007/s00436-004-1144-2