| Literature DB >> 7542090 |
E Castigli1, R Fuleihan, N Ramesh, E Tsitsikov, A Tsytsykova, R S Geha.
Abstract
CD40 is a surface antigen expressed on B cells. The CD40 ligand (CD40L) is expressed on activated T cells. Interaction between CD40 and CD40L is critical for proliferation and isotype switching in the context of a response to a T-cell-dependent antigen. Patients with X-linked hyper-IgM syndrome (HIGMX-1) in their CD40L gene are unable to switch from IgM to IgG, IgA and IgE. Mice with a disrupted CD40 gene fail to undergo isotype switching to T-cell-dependent antigens but respond normally to T-independent antigens.Entities:
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Year: 1995 PMID: 7542090 DOI: 10.1159/000236923
Source DB: PubMed Journal: Int Arch Allergy Immunol ISSN: 1018-2438 Impact factor: 2.749