Abstract
Our understanding of the mechanism of T-cell help in antibody production in the mouse has been improved by the production of long-term lines of T cells, either using T-cell growth factor (TCGF or IL-2) or by creating T-cell hybridomas. Such cells have been shown to produce non-antigen-specific1,2 or antigen-specific helper factors3 with genetically restricted or unrestricted activity1–3. However, the factors are still not well characterized. We have examined the role of human T-helper cells and their soluble factors in inducing antibody production, initially in a xenogeneic system, using mouse B cells4. Using a human in vitro secondary antibody response system for influenza virus5 we have investigated the effect of helper factors on human B cells. We report here the production of long-term cultures of antigen-specific human helper cells. Both the cells and the high-potency antigen-specific helper factor (HF) which they produce act on human B cells in a genetically restricted manner. Preliminary mapping of the restriction indicates associations, but not identity, with HLA-DR.
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Fischer, A., Beverley, P. & Feldmann, M. Long-term human T-helper lines producing specific helper factor reactive to influenza virus. Nature 294, 166–168 (1981). https://doi.org/10.1038/294166a0
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DOI: https://doi.org/10.1038/294166a0
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