Mimicry between HTLV-I and myelin basic protein: No response in HTLV-I-associated myelopathy patients

Davies, J. M., Sonoda, S., Yashiki, S., Osame, M., & Carnegie, P. R. (1992) Mimicry between HTLV-I and myelin basic protein: No response in HTLV-I-associated myelopathy patients. Journal of Neuroimmunology, 41(2), pp. 239-243.

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The reactivity to a peptide from the HTLV-I polyprotein (FKLPGLNSR) and a similar sequence from myelin basic protein (MBP) (FKLGGRDSR) was examined in relation to the proposal that mimicry of MBP by HTLV-I could be involved in autoimmune responses in HTLV-I-associated myelopathy (HAM). It was found that rabbit antibodies raised against the HTLV-I peptide recognised both peptides, with a titre of 1/10240 to the HTLV-I peptide and 1/5220 to the MBP peptide. Human sera from HAM patients and a HTLV-I carrier without HAM showed slightly higher responses to the HTLV-I peptide compared to the responses from uninfected human sera. HAM patients had greater responses to the HTLV-I peptide than to the similar MBP peptide and an unrelated bovine MBP peptide. There was no recognition of the peptides by peripheral blood lymphocytes from HAM patients or a HTLV-I carrier without HAM. It was concluded that although cross-reactivity was demonstrated in rabbits and the HTLV-I peptide was recognised by sera from HAM patients, the epitope does not appear to evoke a mimicking response to the similar region in MBP. Hence it is not likely to be involved in the pathogenesis of HAM through molecular mimicry.

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ID Code: 87937
Item Type: Journal Article
Refereed: Yes
Keywords: HTLV-I-associated myelopathy, Mimicry, Myelin basic protein, phytohemagglutinin, article, clinical article, controlled study, human, human cell, human t cell leukemia virus, molecular biology, priority journal, spinal cord disease, Amino Acid Sequence, Animal, Human T-lymphotropic virus 1, Immunization, Molecular Sequence Data, Myelin Basic Proteins, Paraparesis, Tropical Spastic, Rabbits, Support, Non-U.S. Gov't, Viral Proteins
DOI: 10.1016/0165-5728(92)90075-V
ISSN: 0165-5728
Copyright Owner: Copyright 1992 Elsevier BV
Deposited On: 30 Sep 2015 02:32
Last Modified: 30 Sep 2015 03:04

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