Abstract
Whether the expression of higher molecular weight isoforms of the T-200 complex represents different lineages of T cells and/or a sequential stage of the differential pathway of T cells has been unclear. Understanding T cell expression of higher molecular weight isoforms of the T-200 complex (CD45R) may be important because of their association with regulation of immune responses. By direct single cell cloning, we observed a number of long-term T cell clones that expressed CD45RA (2H4). CD45RA expression could be further regulated by ionomycin or the cytokines IL-1 and IL-6, but not IL-2, IL-4, or IFN-gamma. These results indicate that CD45RA expression may define T cell lineages of activated T cells partially controlled by the cytokines IL-1 and IL-6. Further, these results may associate regulatory actions of IL-1 and IL-6 with their ability to increase CD45RA expression in subpopulations of human T cells.
MeSH Terms
Antigens, Differentiation
Clone Cells
Humans
Interleukin-1/pharmacology
Interleukin-6/pharmacology
Leukocyte Common Antigens
Molecular Weight
Receptors, Antigen, T-Cell/genetics
T-Lymphocytes/immunology
Chemicals
Antigens, Differentiation
Interleukin-1
Interleukin-6
Receptors, Antigen, T-Cell
Leukocyte Common Antigens
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Brod S A
Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.
Rudd C E
Purvee M
Hafler D A
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