title: A continuous peptide epitope reacting with pandemic influenza AH1N1 predicted by bioinformatic approaches.
abstract: Computational identification of potential epitopes with an immunogenic capacity challenges immunological research. Several methods show considerable success, and together with experimental studies, the efficiency of the algorithms to identify potential peptides with biological activity has improved. Herein, an epitope was designed by combining bioinformatics, docking, and molecular dynamics simulations. The hemagglutinin protein of the H1N1 influenza pandemic strain served as a template, owing to the interest of obtaining a scheme of immunization. Afterward, we performed enzyme-linked immunosorbent assay (ELISA) using the epitope to analyze if any antibodies in human sera before and after the influenza outbreak in 2009 recognize this peptide. Also, a plaque reduction neutralization test induced by virus-neutralizing antibodies and the IgG determination showed the biological activity of this computationally designed peptide. The results of the ELISAs demonstrated that the serum of both prepandemic and pandemic recognized the epitope. Moreover, the plaque reduction neutralization test evidenced the capacity of the designed peptide to neutralize influenza virus in Madin-Darby canine cells.
authors: Laboratorio de Bioquímica y Biofísica Computacional, Doctorado en Biotecnología ENMH-IPN, Mexico, D.F., Mexico.
authors: Jonathan P
authors: JP
authors: Carrillo-Vazquez
authors: Laboratorio de Modelado Molecular y Diseño de Fármacos, Escuela Superior de Medicina-IPN, Mexico, D.F., Mexico.
authors: José
authors: J
authors: Correa-Basurto
authors: Laboratorio de Medicina de Conservación, Escuela Superior de Medicina-IPN, Mexico, D.F., Mexico.
authors: Jazmin
authors: J
authors: García-Machorro
authors: Laboratorio de Inmunología Molecular, Escuela Superior de Medicina-IPN, Mexico, D.F., Mexico.
authors: Rafael
authors: R
authors: Campos-Rodríguez
authors: CNRS FRE 3009, SysDiag, CAP DELTA, Montpellier, France.
authors: Violaine
authors: V
authors: Moreau
authors: Laboratorio Transdisciplinario de Investigación en Sistemas Evolutivos SEPI-ESCOM-IPN, Mexico, D.F., Mexico.
authors: Jorge L
authors: JL
authors: Rosas-Trigueros
authors: Laboratorio de Bioquímica y Biofísica Computacional, Doctorado en Biotecnología ENMH-IPN, Mexico, D.F., Mexico.
authors: Cesar A
authors: CA
authors: Reyes-López
authors: Centro de Investigación en Biotecnología Aplicada-IPN, Tlaxcala, Mexico.
authors: Marlon
authors: M
authors: Rojas-López
authors: Laboratorio de Bioquímica y Biofísica Computacional, Doctorado en Biotecnología ENMH-IPN, Mexico, D.F., Mexico.
authors: Absalom
authors: A
authors: Zamorano-Carrillo
mesh_terms: D000818:Animals; D000906:Antibodies / Q000276:immunology; D002460:Cell Line; D019295:Computational Biology; D004285:Dogs; D000939:Epitopes / Q000378:metabolism*; D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000737:chemistry / Q000378:metabolism*; D006801:Humans; D007251:Influenza, Human / Q000276:immunology / Q000378:metabolism*; D056004:Molecular Dynamics Simulation; D010455:Peptides / Q000737:chemistry / Q000378:metabolism*; D011817:Rabbits
chemical_list: D000906:Antibodies; D000939:Epitopes; C543345:H1N1 virus hemagglutinin; D019267:Hemagglutinin Glycoproteins, Influenza Virus; D010455:Peptides
keywords: Bioinformatic; Influenza; Peptide