A study of human T-cell lines generated from multiple sclerosis patients and controls by stimulation with peptides of myelin basic protein |
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| Authors: | M.P. Pender P.A Csurhes R.A. Houghten P.A. McCombe M.F. Good |
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| Affiliation: | aNeuroimmunology Research Unit, Department of Medicine, The University of Queensland, Royal Brisbane Hospital, Herston, QLD 4029, Australia;bThe Department of Neurology, Royal Brisbane Hospital, Herston, QLD 4029, Australia;cTorrey Pines Institute for Molecular Studies, 3550 General Atomics Court, San Diego, CA 92121, USA;dThe Queensland Institute of Medical Research, The Bancroft Centre, Royal Brisbane Hospital, Herston, QLD 4029, Australia |
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| Abstract: | We generated T-cell lines from the peripheral blood of controls and of patients with multiple sclerosis (MS) by stimulation with overlapping synthetic peptides representing the entire sequences of all four isoforms of human myelin basic protein (MBP). The T-cell lines reacted to a wide range of epitopes in the major isoforms of MBP and to epitopes that were present only in the minor isoforms. Many MS patients and controls had T-cells responding to one or more cryptic MBP epitopes, as indicated by the generation of a peptide-specific T-cell line(s)by stimulation with synthetic peptides but not by stimulation with whole MBP. About one-third of the peptide-generated lines were cytotoxic. Although we have shown that this technique of peptide stimulation is effective in generating human antiviral cytotoxic CD8+ T-cell lines, all the cytotoxic MBP-specific lines generated by this method were predominantly CD4+. Our study did not reveal any significant differences, between MS patients and controls, in reactivity to epitopes within any of the isoforms of MBP. |
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| Keywords: | Cryptic epitope Isoform Multiple sclerosis Myelin basic protein Peptide T-cell |
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