The Journal of Immunology, Vol 143, Issue 12 3867-3872, Copyright © 1989 by American Association of Immunologists

ARTICLES

Production of hapten-specific T cell hybridomas and their use to study the effect of ultraviolet B irradiation on the development of contact hypersensitivity

M Bigby, R Vargas and MS Sy
Department of Pathology, Massachusetts General Hospital, Boston.

We produced a series of T cell hybridomas that produce IL-2 when cultured with syngeneic APC coupled to FITC or TNP. These hybridomas are hapten specific and Ia restricted. The hybridomas were used to detect hapten-bearing APC in draining lymph nodes of mice sensitized with trinitrochlorobenzene or FITC in vivo. Hapten-bearing APC capable of stimulating the hybridomas were detectable in draining lymph nodes of hapten-painted mice within 3 h after sensitization. The ability of lymph node APC to stimulate the hybridomas peaked at 24 h and declined by 48 h. The dendritic cell subpopulation was the subpopulation of cells that were found in the regional lymph nodes of hapten-painted animals that were capable of stimulating the hybridomas to produce IL- 2. Prior treatment of the skin with low dose UVB irradiation before epicutaneous application of contact sensitizers significantly reduced the capacity of hapten-bearing APC to stimulate the hybridomas. This observation was corroborated by results obtained from flow microfluorometry analysis of lymph node cells from FITC-sensitized mice. Lymph node dendritic cells obtained from FITC-painted mice contain a brightly staining group of cells by flow microfluorometry analysis. Lymph node dendritic cells from FITC-painted, UVB-irradiated mice did not contain this brightly staining population. These results indicate that low dose, local UVB irradiation may affect APC migration and/or function. We believe that these hybridomas will prove to be useful tools in the study of the development and regulation of contact hypersensitivity.

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