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  • Title: Characteristics of cytotoxic thyroglobulin-specific T cell hybridomas.
    Author: Remy JJ, Texier B, Chiocchia G, Charreire J.
    Journal: J Immunol; 1989 Feb 15; 142(4):1129-33. PubMed ID: 2464639.
    Abstract:
    Clones of cytotoxic thyroid-specific T cell hybridomas were generated by fusion of thyroglobulin-primed, "in vitro"-boosted CBA lymph node cells with the AKR-derived lymphoma cell line BW 5147. One hundred and thirty one clones were obtained. Among them, 15 were able to induce the lysis of 51Cr-labeled syngeneic thyroid epithelial cells after 5 h of incubation at 37 degrees C. Two T cell clones, HTC1 and HTC2, were further studied. These clones, which exhibit cell surface characteristics of cytotoxic cells, were specific for only syngeneic thyroid cells (allogeneic thyroid cells or syngeneic epithelial cells were never lysed by these hybridomas). Moreover, by using Ag-pulsed syngeneic macrophages as targets, syngeneic cytotoxicity was shown to be specific for thyroglobulin and not for a nonrelated Ag. The lysis obtained with these autoreactive thyroid-specific T cell clones is restricted to class I major histocompatibility Ag. This property is assessed by both the blocking of syngeneic cytotoxicity toward thyroid epithelial cells or thyroglobulin-pulsed macrophages only by anti-class I mAb and by the detection of specific lysis of target cells exclusively when effector hybrid cells and target thyroid epithelial cells or thyroglobulin-pulsed macrophages shared at least class I major histocompatibility Ag.
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