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Research/Field of competence:

Study on the development of one of the enterotoxigenic Escherichia coli vaccine components, based on the heat-stable ETEC toxin (ST).


Maintaining cell lines, viral seed production, purification of viral particles, expression purification and analysis of viral proteins, marking proteins and viral particles with radioactive isotopes, transfection of nucleic acids, methods for protein analysis (SDS-polyacrylamide gel electrophoresis), western blotting, determination cytoplasm concentration of calcium and handling techniques of electron microscopy and fluorescence, especially in confocal microscopy. Recombinant techniques, ELISA, large-scale analysis and screening. Proteomics techniques, mass spectrometry, samples preparation for MALDI-ToF and MALDI-Tof analysis for protein identification.


Goncalves, L., Albarran, B., Salmen, S., Borges, L., Fields, H., Montes, H., Soyano, A., Díaz, Y. and Berrueta, L. The nonresponse to Hepatitis B vaccination is associated with impaired lymphocyte activation. Virology. 2004 Aug 15;326(1):20-8.

Michelangeli F, Díaz Y y Ruiz MC. Canales iónicos, enfermedades virales y diarrea. Revista Venezolana de Nefrología. 2004, Vol 6, No. 2: 23-30.

Ruiz MC, Díaz Y, Peña F, Aristimuño OC, Chemello ME, Michelangeli F. Ca2+ permeability of the plasma membrane induced by rotavirus infection in cultured cells is inhibited by tunicamycin and brefeldin A. Virology. 2005 Mar 1;333(1):54-65.

Ruiz MC, Aristimuño O.C., Díaz Y., Peña F., Chemello M.E., Rojas H., Ludert J.E., and Michelangeli F. Intracellular disassembly of infectious rotavirus particles by depletion of Ca2+ sequestered in the endoplasmic reticulum at the end of virus cycle. Virus Research. 2007. Dec; 130(1-2):140-50.

Zambrano J.L.; Díaz Y.; Peña F.; Vizzi E.; Ruiz M.C.; Michelangeli F.; Liprandi F.; Ludert J.E. Silencing of rotavirus NSP4 or VP7 expression reduce alterations in Ca2+ homeostasis induced by infection in cultured cells. Journal of Virology. 2008. Jun;82(12):5815-24.

Díaz Y; Chemello ME; Peña F; Aristimuño OC; Rojas H, Chwetzoff S; Sapin C; Trugnan G; Michelangeli F and Ruiz MC. Expression of non structural rotavirus protein NSP4 mimicks Ca2+ homeostasis changes induced by rotavirus infection in COS-7 cells. Journal of Virology. 2008. Nov; 82(22): 11331–11343.

Ruiz MC, Leon T, Díaz Y, Michelangeli F. Molecular biology of rotavirus entry and replication. TheScientificWorldJOURNAL. 2009. Dec, 16(9): 1476-97.

Marie Christine Ruiz, Yuleima Díaz and Fabian Michelangeli. Pathophysiology of diarrhea induced by rotavirus and Ca2+ homeostasis of the infected cell. In: Viruses Responsible for Emerging Diseases in South-East Asia. Ed by Nguyen Tran Hien, Giuseppe Baladacci, Anne-Lise Haenni and Ennio Lucio Benedetti, 2011, p.239.

Zambrano JL, Sorondo O, Alcala A, Vizzi E, Diaz Y, Ruiz MC, Michelangeli F, Liprandi F, Ludert JE. Rotavirus infection of cells in culture induces activation of RhoA and changes in the actin and tubulin cytoskeleton. PloS One. 2012. 7(10):e47612.

Díaz Y, Peña F, Aristimuño OC, Matteo L, De Agrela M, Chemello ME, Michelangeli F, Ruiz MC. Dissecting the Ca²⁺ entry pathways induced by rotavirus infection and NSP4-EGFP expression in Cos-7 cells. Virus Res. 2012 Aug;167(2):285-96.

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cp: 2019-11-22 18:17:32