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PMID: 10365395 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't Review

Genetic control and dynamics of the cellular immune response to the human T-cell leukaemia virus, HTLV-I.

Bangham CR, Hall SE, Jeffery KJ, Vine AM, Witkover A, Nowak MA, Wodarz D, Usuku K, Osame M

Abstract

About 1% of people infected with the human T-cell leukaemia virus, type 1 (HTLV-I) develop a disabling chronic inflammatory disease of the central nervous system known as HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP). Patients with HAM/TSP have a vigorous immune response to HTLV-I, and it has been widely suggested that this immune response, particularly the HTLV-I-specific cytotoxic T-lymphocyte (CTL) response, causes the tissue damage that is seen in HAM/TSP. In this paper we summarize recent evidence that a strong CTL response to HTLV-I does in fact protect against HAM/TSP by reducing the proviral load of HTLV-I. We conclude that HTLV-I is persistently replicating at a high level, despite the relative constancy of its genome sequence. These results imply that antiretroviral drugs could reduce the risk of HAM/TSP by reducing the viral load, and that an effective anti-HTLV-I vaccine should elicit a strong CTL response to the virus. The dynamic nature of the infection also has implications for the epidemiology and the evolution of HTLV-I.

MeSH Terms
Human T-lymphotropic virus 1/genetics,immunology,physiology Humans Paraparesis, Tropical Spastic/epidemiology,immunology Risk Factors T-Lymphocytes, Cytotoxic/immunology Viral Load Virus Replication
Authors & Affiliations
9 authors, click to expand affiliations / ORCID
Bangham C R
Department of Immunology, Imperial College School of Medicine, London, UK. c.bangham@ic.ac.uk
Hall S E
Jeffery K J
Vine A M
Witkover A
Nowak M A
Wodarz D
Usuku K
Osame M
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Article Info
Journal
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
Abbr.
Philos Trans R Soc Lond B Biol Sci
ISSN
0962-8436
Published
1999-04-29
Pages
691-700
Language
English
Region
England
NLM ID
7503623
PMCID
PMC1692558
Subset
IM
Grants
Wellcome Trust · United Kingdom
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