✦ LIBER ✦

Proliferative and/or cytotoxic activity of lymphocyte clones to autologous human melanoma

✍ Scribed by Giuseppe Fossati; Andrea Anichini; Paola Squarcina; Arabella Mazzocchi; Giorgio Parmiani

Publisher: John Wiley and Sons
Year: 1988
Tongue: French
Weight: 693 KB
Volume: 42
Category: Article
ISSN: 0020-7136
DOI: 10.1002/ijc.2910420216

No coin nor oath required. For personal study only.

✦ Synopsis

Peripheral blood lymphocytes (PBL) of a patient with metastatic melanoma were cultured with autologous melanoma cells (Auto-Me) and recombinant interleukin 2 (IL-2) (MLTC-PBL). Thirty-five days later, when no cytotoxicity against Auto-Me or K562 was detectable, MLTC-PBL were cloned in the presence of Auto-Me, IL-2 (25 U/ml) and Daudi cells as feeder. Eighty-one growing clones were simultaneously screened for proliferative and cytotoxic activity to Auto-Me. Twenty-two clones proliferated in the presence of Auto-Me only, 29 in the resence of IL-2 only and 41 in the presence of Auto-Me plus I[-2; 12 clones showed cytotoxic activity against Auto-Me. Six clones expressed both cytotoxic and proliferative activjty to Auto-Me. The phenotype of 6 proliferative clones tested was CD3+, CD4+, WT31+, CDE-, CD16-. Leu 19-, whereas that of 2 cytotoxicprollferative clones tested was CD3+, CDE+, Leul9+, WT3I +, CD4-. CD16-. Specificity analysis of proliferative response of 6 clones and of cytotoxicity of 7 clones, tested on a panel of 14 different target cells, revealed a complex pattern of reactivity, each clone expressing a peculiar specificity. Our results suggest the possibility of isolating, from melanoma patients' PBL, T-cell clones with proliferative activity to Auto-Me and Auto-Me plus IL-2. and T-cell clones which apparently express both proliferative and cytotoxic activity to Auto-Me.

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