Functional and phenotypical studies of the Leu-4 (CD3)+, Leu-1 (CD5)- T lymphocyte

Edward Srour, E. B. Walker, D. E. Walker, J. Jansen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A small T cell subpopulation expressing the phenotype Leu-5 (CD2)+, Leu-4 (CD3)+, Leu-1 (CD5)- can be found in peripheral blood and bone marrow of normal individuals. When these cells were sorted out by three colour immunofluorescence cell sorting and tested in limiting dilution assays, they were found to have lower frequencies of proliferating (9.0 ± 5.6 times, n = 7) and of IL-2 producing cells (11.5 ± 5.0 times n = 5), and a higher frequency of cytotoxic cells (3.1 ± 2.6 times, n = 2) than T lymphocytes expressing the three markers. In peripheral blood lymhocytes, 1/3 of the CD3+, CD5- cells were positive for Leu-2a (CD8) while virtually all were negative for Leu-3a (CD4). Four colour flow cytometric analysis revealed a small subset of T cells positive for CD3 and negative for CD5, CD4 and CD8. Approximately 75% of the CD3+, CD5- cells were negative for Leu-7 and CD16 simultaneously. These results shed a light on the phenotype of T cells that escape killing by CD5 and complement in T cell depleted bone marrow and may explain why fewer residual T cells in the depleted marrow are detected by limiting dilution assays than by flow cytometric analysis.

Original languageEnglish
Pages (from-to)34-39
Number of pages6
JournalClinical and Experimental Immunology
Volume73
Issue number1
StatePublished - 1988

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T-Lymphocytes
Bone Marrow
Color
Phenotype
T-Lymphocyte Subsets
Interleukin-2
Fluorescent Antibody Technique

ASJC Scopus subject areas

  • Immunology

Cite this

Functional and phenotypical studies of the Leu-4 (CD3)+, Leu-1 (CD5)- T lymphocyte. / Srour, Edward; Walker, E. B.; Walker, D. E.; Jansen, J.

In: Clinical and Experimental Immunology, Vol. 73, No. 1, 1988, p. 34-39.

Research output: Contribution to journalArticle

Srour, Edward ; Walker, E. B. ; Walker, D. E. ; Jansen, J. / Functional and phenotypical studies of the Leu-4 (CD3)+, Leu-1 (CD5)- T lymphocyte. In: Clinical and Experimental Immunology. 1988 ; Vol. 73, No. 1. pp. 34-39.
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