Abstract
THE demonstration of a definite antigen-binding specificity possessed by suppressor T cells and suppressor factors1–6 has provided an important strategy to determine the T-cell receptor for antigen. Although the gene coding for the determinant on the suppressor molecule has been unambiguously mapped in the I–J subregion of the mouse major histocompatibility complex (MHC)3,7, the chemistry and the mode of action of the active molecule have been only poorly analysed—probably because of the difficulty in collecting sufficient materials from suppressor T cells for each studies. The establishment of T-cell hybridomas with specific suppressor function would provide an ideal tool to analyse the suppressor molecule and the mechanism of its action. We have been successful in obtaining a number of hybrid cell lines continuously secreting molecules having both antigen-specific suppressor function and I–J determinants. High frequency of fused cells with I–J determinants was reproducibly made by the combination of two procedures; the method to enrich antigen-specific Ig− T cells from primed spleen cells by adsorption to and elution from antigen-coated Petri dishes, and the selection of I–J+ hybrids by sorting out with fluorescence activated cell sorter (FACS) after staining the fused cells with appropriate fluorescence reagents8. Here we report the derivation of an I–J bearing hybrid cell line, which is transplantable to H–2b/k F1 hybrid mice, secreting the antigen-specific suppressor molecule. Some physiochemical and immunochemical properties are also described.
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References
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TANIGUCHI, M., SAITO, T. & TADA, T. Antigen-specific suppressive factor produced by a transplantable I-J bearing T-cell hybridoma. Nature 278, 555–558 (1979). https://doi.org/10.1038/278555a0
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DOI: https://doi.org/10.1038/278555a0
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