Human lymphocytes expressing a TCR gamma/delta.

E. Ciccone, C. E. Grossi, W. Malorni, G. Arancia, M. C. Mingari, S. Ferrini, A. Moretta, L. Moretta

Research output: Contribution to journalArticle

Abstract

A minor subset of T lymphocytes express a TCR composed of gamma and delta chains. This subset differs from conventional T cells for a number of phenotypic and functional characteristics. TCR gamma/delta + cells simultaneously lack both CD4 and CD8 antigens. Cloning of CD4-8-peripheral blood lymphocytes, under limiting dilution conditions, revealed that they are homogeneously composed of cytolytic cells which efficiently lyse tumor target cells. Formal proofs have been provided that TCR gamma/delta + cells are able to recognize antigens. For example, they proliferated in response to allogeneic mixed lymphocyte culture (MLC), in addition MLC-derived TCR gamma/delta + cells specifically lysed PHA-induced blast cells bearing the stimulating alloantigens. The selection of monoclonal antibodies (MoAbs) specific for TCR gamma/delta molecules allowed to identify two distinct subsets of TCR gamma/delta + cells. These MoAbs, termed BB3 and delta-TCS-1 (or the equivalent A13) respectively, induced specific activation of cloned cells expressing the corresponding antigenic determinants (as assessed by measurements of intracellular Ca2+ and/or lymphokine production of cytolytic activity). Analysis of the distribution of subsets expressing different forms of TCR gamma/delta, showed that the BB3-reactive form is prevalent in the peripheral blood. In contrast, delta-TCS-1-reactive cells are relatively infrequent in peripheral blood, but represent the majority of TCR gamma/delta + in the tissues.

Original languageEnglish
Pages (from-to)349-356
Number of pages8
JournalAnnali dell'Istituto Superiore di Sanita
Volume26
Issue number3-4
Publication statusPublished - 1990

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Somatostatin-Secreting Cells
Lymphocytes
Monoclonal Antibodies
CD8 Antigens
CD4 Antigens
Isoantigens
Lymphokines
T-Lymphocyte Subsets
Organism Cloning
Epitopes
Cell Count
T-Lymphocytes
Antigens
Neoplasms

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Cite this

Ciccone, E., Grossi, C. E., Malorni, W., Arancia, G., Mingari, M. C., Ferrini, S., ... Moretta, L. (1990). Human lymphocytes expressing a TCR gamma/delta. Annali dell'Istituto Superiore di Sanita, 26(3-4), 349-356.

Human lymphocytes expressing a TCR gamma/delta. / Ciccone, E.; Grossi, C. E.; Malorni, W.; Arancia, G.; Mingari, M. C.; Ferrini, S.; Moretta, A.; Moretta, L.

In: Annali dell'Istituto Superiore di Sanita, Vol. 26, No. 3-4, 1990, p. 349-356.

Research output: Contribution to journalArticle

Ciccone, E, Grossi, CE, Malorni, W, Arancia, G, Mingari, MC, Ferrini, S, Moretta, A & Moretta, L 1990, 'Human lymphocytes expressing a TCR gamma/delta.', Annali dell'Istituto Superiore di Sanita, vol. 26, no. 3-4, pp. 349-356.
Ciccone E, Grossi CE, Malorni W, Arancia G, Mingari MC, Ferrini S et al. Human lymphocytes expressing a TCR gamma/delta. Annali dell'Istituto Superiore di Sanita. 1990;26(3-4):349-356.
Ciccone, E. ; Grossi, C. E. ; Malorni, W. ; Arancia, G. ; Mingari, M. C. ; Ferrini, S. ; Moretta, A. ; Moretta, L. / Human lymphocytes expressing a TCR gamma/delta. In: Annali dell'Istituto Superiore di Sanita. 1990 ; Vol. 26, No. 3-4. pp. 349-356.
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