Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

The CD40 Antigen and its Ligand

The CD40 Antigen and its Ligand CD40 is an integral membrane protein found on the surface of B lym­ phocytes, dendritic cells, follicular dendritic cells, hematopoietic pro­ genitor cells, epithelial cells, and carcinomas. It is a 45-50 kDa glycoprotein of 277 aa, which is a member of the tumor necrosis factor receptor super­ family. The CD40 gene maps to h uman chromosome 20q 1 1 -2-q1 3-2. CD40 binds to a ligand (CD40-L) which is an 35 kDa glycoprotein of 261 aa, a member of the tumor necrosis factor s uperfamily. The CD40-L gene maps to h uman chromosome Xq24. This CD40-L is expressed on activated T cells, mostly CD4 + but also some CD8 + as well as basophils/mast cells. The CD40-L is defective in the X-linked hyper- IgM syndrome. Cross-linking of CD40 with immobilized anti-CD40 or cells expressing CD40-L induces B cells to proliferate strongly, and addition of I L-4 or IL-1 3 allows the generation of factor-dependent long-term normal h uman B cell lines and the secretion of IgE following isotype switching. Addition of IL- l O results in very high immunoglobulin production with limited cell proliferation. IL- I O induces naive B cells to produce IgG3, IgGI, and IgA l http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Immunology Annual Reviews

Loading next page...
 
/lp/annual-reviews/the-cd40-antigen-and-its-ligand-XnCjPGbmlh

References (134)

Publisher
Annual Reviews
Copyright
Copyright 1994 Annual Reviews. All rights reserved
Subject
Review Articles
ISSN
0732-0582
eISSN
1545-3278
DOI
10.1146/annurev.iy.12.040194.004313
pmid
7516669
Publisher site
See Article on Publisher Site

Abstract

CD40 is an integral membrane protein found on the surface of B lym­ phocytes, dendritic cells, follicular dendritic cells, hematopoietic pro­ genitor cells, epithelial cells, and carcinomas. It is a 45-50 kDa glycoprotein of 277 aa, which is a member of the tumor necrosis factor receptor super­ family. The CD40 gene maps to h uman chromosome 20q 1 1 -2-q1 3-2. CD40 binds to a ligand (CD40-L) which is an 35 kDa glycoprotein of 261 aa, a member of the tumor necrosis factor s uperfamily. The CD40-L gene maps to h uman chromosome Xq24. This CD40-L is expressed on activated T cells, mostly CD4 + but also some CD8 + as well as basophils/mast cells. The CD40-L is defective in the X-linked hyper- IgM syndrome. Cross-linking of CD40 with immobilized anti-CD40 or cells expressing CD40-L induces B cells to proliferate strongly, and addition of I L-4 or IL-1 3 allows the generation of factor-dependent long-term normal h uman B cell lines and the secretion of IgE following isotype switching. Addition of IL- l O results in very high immunoglobulin production with limited cell proliferation. IL- I O induces naive B cells to produce IgG3, IgGI, and IgA l

Journal

Annual Review of ImmunologyAnnual Reviews

Published: Apr 1, 1994

There are no references for this article.