Interconversion of CD45R subsets of CD4 T cells in vivo View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1990-11

AUTHORS

E B Bell, S M Sparshott

ABSTRACT

T lymphocytes express multiple forms of the leukocyte common antigen CD45, transcribed by alternative usage of leukocyte-common antigen exons 4-6. Species-specific monoclonal antibodies against restricted epitopes (CD45R) of the antigen subdivide CD4 T cells into reciprocal subsets expressing either the high molecular weight isoforms CD45RA or RB or a molecule in which exons 4-6 have been spliced out (CD45R0). CD45R+ or RB+ CD4 T cells are potent in graft-versus-host reactions, and interleukin-2 related activities, whereas the CD45R0+ subset responds in vitro to recall antigens and provides help for antibody synthesis. It is unclear whether CD45R subsets derive from separate lineages, or are products of unidirectional or reversible differentiation. We show by transferring CD45R+ or CD45R- allotype-marked CD4 T cells into athymic nude rats that both subsets routinely generate cells of the opposite phenotype with a function that follows phenotype, not parentage. The recent equation of CD45R subsets as maturation stages representing 'naive' and 'memory' T cells is difficult to reconcile with this finding. More... »

PAGES

163

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/348163a0

DOI

http://dx.doi.org/10.1038/348163a0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1020063119

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/1978253


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