Cell mediated immune response elicited in mice after immunization with the P64k meningococcal protein: epitope mapping

The P64k protein of Neisseria meningitidis has been reported as an immunological carrier for weak immunogens. This investigation was aimed at characterizing the T-cell response produced in primed mice and at identifying T helper cell epitopes within this molecule. BALB/c mice subcutaneously immunize...

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Veröffentlicht in:FEMS immunology and medical microbiology 2004-10, Vol.42 (2), p.233-239
Hauptverfasser: González, Sonia, Nazábal, Consuelo, Rao, Kanury V.S., Reyes, Osvaldo, Garay, Hilda E., Caballero, Evelin, Alvarez-Obregón, Julio C., Sardiñas, Gretel, Silva, Ricardo
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container_title FEMS immunology and medical microbiology
container_volume 42
creator González, Sonia
Nazábal, Consuelo
Rao, Kanury V.S.
Reyes, Osvaldo
Garay, Hilda E.
Caballero, Evelin
Alvarez-Obregón, Julio C.
Sardiñas, Gretel
Silva, Ricardo
description The P64k protein of Neisseria meningitidis has been reported as an immunological carrier for weak immunogens. This investigation was aimed at characterizing the T-cell response produced in primed mice and at identifying T helper cell epitopes within this molecule. BALB/c mice subcutaneously immunized with the recombinant antigen provided inguinal lymph node cells (LNC) that proliferated in the presence of P64k in a dose-dependent manner. Proliferating cells secreted IL-4 while the concentration of IL-12 remained unaltered in the culture supernatant. By testing a panel of 59 overlapping synthetic peptides spanning the entire sequence of the antigen a T-cell determinant was localized. Prime-boost and lymphoproliferation experiments, conducted with highly purified synthetic peptides, confirmed that the segment including amino acids 470–485 comprises a T-cell epitope within the P64k molecule.
doi_str_mv 10.1016/j.femsim.2004.05.007
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source Oxford University Press Journals All Titles (1996-Current); MEDLINE; Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection
subjects Amino Acid Sequence
Amino acids
Animals
Antigens
Applied microbiology
Bacterial Outer Membrane Proteins - chemistry
Bacterial Outer Membrane Proteins - genetics
Bacterial Outer Membrane Proteins - immunology
Bacteriology
Biological and medical sciences
Cell culture
Epitope Mapping
Epitopes, T-Lymphocyte - immunology
Female
Fundamental and applied biological sciences. Psychology
Helper cells
Helper T-cell epitope
Immune response
Immune system
Immunization
Immunology
Interleukin 12
Interleukin 4
Lymph nodes
Lymph Nodes - chemistry
Lymph Nodes - immunology
Lymphocyte Activation
Lymphocytes T
Meningococcal Infections - prevention & control
Meningococcal Vaccines - administration & dosage
Meningococcal Vaccines - immunology
Meningococci
Mice
Mice, Inbred BALB C
Microbiology
Miscellaneous
Molecular Sequence Data
Neisseria meningitidis
Neisseria meningitidis - immunology
P64k
Peptide mapping
Peptides
Peptides - chemistry
Peptides - immunology
Proteins
Recombinant Proteins - immunology
Synthetic peptides
T-cell response
Th1 Cells - immunology
Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects)
title Cell mediated immune response elicited in mice after immunization with the P64k meningococcal protein: epitope mapping
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