A structural in silico analysis of the immunogenicity of l-asparaginase from Escherichia coli and Erwinia carotovora.

Autor: Belén LH; Department of Chemical Engineering, Faculty of Engineering and Science, Universidad de La Frontera, Temuco, Chile., Lissabet JB; Department of Chemical Engineering, Faculty of Engineering and Science, Universidad de La Frontera, Temuco, Chile., de Oliveira Rangel-Yagui C; Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil., Effer B; Department of Chemical Engineering, Faculty of Engineering and Science, Universidad de La Frontera, Temuco, Chile., Monteiro G; Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil., Pessoa A; Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil., Farías Avendaño JG; Department of Chemical Engineering, Faculty of Engineering and Science, Universidad de La Frontera, Temuco, Chile. Electronic address: jorge.farias@ufrontera.cl.
Jazyk: angličtina
Zdroj: Biologicals : journal of the International Association of Biological Standardization [Biologicals] 2019 May; Vol. 59, pp. 47-55. Date of Electronic Publication: 2019 Mar 11.
DOI: 10.1016/j.biologicals.2019.03.003
Abstrakt: Acute lymphoblastic leukemia (ALL) is a type of cancer with a high incidence in children. The enzyme l-asparaginase (ASNase) constitutes a key element in the treatment of this disease. Four formulations of ASNase from a bacterial source are currently available. However, these formulations are characterized by their high immunogenicity, resulting in the inactivation of the drug, as well as in the occurrence of hypersensitivity reactions in a large number of patients. In this work, we performed an immunoinformatic analysis in order to clarify structural aspects of the immunogenicity of the asparaginase from Escherichia coli and Erwinia carotovora. For this purpose, we performed the prediction of immunogenic and allergenic epitopes in the structure of asparaginases by using the relative frequency of immunogenic peptides for the eight alleles most frequently distributed worldwide. This study showed that there are no significant differences in the level of immunogenicity between the two enzymes, while asparaginase from E. coli presented a higher relative frequency of allergenic epitopes. These results are consistent with previously published reports. However, from a structural point of view, to the best of our knowledge, this is the first report describing the structural determinants that contribute to the hypersensitivity response to this treatment.
(Copyright © 2019 International Alliance for Biological Standardization. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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