Constitutive production of a factor supporting B lymphocyte differentiation by a T cell hybridoma

Elkins, K.; Cambier, J.C.

Journal of Immunology 130(3): 1247-1251

1983


ISSN/ISBN: 0022-1767
PMID: 6337214
Document Number: 212180
To investigate the role of soluble T cell products during B cell differentiation more fully, T cell hybridomas were produced by the fusion of normal helper T cells with the T cell lymphoma BW5147. The production of one such hybrid, I4G3, the subclone I4G3.1F2 and the functional activity of the constitutive product are described. The hybrid supernatant acts exclusively in antigen-nonspecific, but antigen-dependent, promotion of B cell differentiation. It is optimally effective in the presence of small amounts of EL4 supernatant. It does not itself contain any detectable IL 2 [interleukin 2] or BCGF [B cell growth factor] or interferon activity. I4G3.1F2 activity is probably an important component of the conventional TRF [T cell replacing factor] preparations produced by mixed lymphocyte populations, and will be useful in further dissection of the contributions of different soluble T cell products to B cell differentiation.

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