Article
The CD40 ligand, gp39, is defective in activated T cells from patients with X-linked hyper-IgM syndrome.
Cell - 29 Jan 1993
Aruffo A, Farrington M, Hollenbaugh D, Li X, Milatovich A, Nonoyama S, Bajorath J, Grosmaire L S, Stenkamp R, Neubauer M
Abstract excerpt
The prominent role of the CD40 receptor in B cell responses led us to investigate the role of the gp39-CD40 interaction in a group of primary immunodeficient patients with defective antibody production. Here we report that patients with hyper-IgM syndrome (HIM) have a defective gp39-CD40 interaction. B cells from HIM patients express functional CD40, but their T cells do not bind CD40-Ig. These patients expressed...
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