Sub-cellular localization of antigen E/2 ofParacoccidioides brasiliensisan immunoenzymatic electron microscopy study
- 1 January 1980
- journal article
- Published by Oxford University Press (OUP) in Medical Mycology
- Vol. 18 (3) , 167-171
- https://doi.org/10.1080/00362178085380311
Abstract
The species- or genus-specific soluble antigen E/2 of Paracoccidioides brasiliensis was detected in yeast cells of the fungus by means of an immunoenzymatic technique. Peroxidase-labelled anti-E/2 immunoglobulins revealed the antigen as irregular vesicles or spots in the cytoplasm and as a fine coating on the plasma membrane of yeast cells of seven Venezuelan strains of P. brasiliensis. The antigen deposits seem to move to the periphery of the cells as the cultures age. Mediante el uso de procedimientos inmunoenzimáticos y de la microscopía electrónica, se ha demostrado la distribución subcelular del antígeno E2 en la fasc levaduriforme de Paracoccidioides brasiliensis. El antigeno fue observado a nivel de vacuolas y vesículas intra citoplasmáticas, asi como en los lomasomas y en la membrana plasmática del hongo. Ante estos hallazgos se postula que el antígeno E2 podría ser sintetizado en organelas centrales (¿ ribosomas?). desplazándose luego hacia la periferia. para ser excretado a través de la membrana plasmática, por simple exocitosis o previa captación por los lomasomas.Keywords
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