Abstract
The interaction between CD40 ligand and CD40 is critical for activation of T and B cells in vivo. We have recently demonstrated that this interaction rapidly induces a novel costimulatory activity distinct from B7 and independent of CD28. To study the molecular basis of the costimulatory activity, we have produced a novel monoclonal antibody, TM-1, that binds an 85-kilodalton costimulatory molecule rapidly induced by CD40L. Expression cloning reveals that TM-1 binds CD44H. CD44H expressed on Chinese hamster ovary cells has potent costimulatory activity for clonal expansion of T cells isolated from both wild-type mice and these with a targeted mutation of CD28. Thus, CD44H costimulates T cell proliferation by a CD28-independent mechanism. These results revealed that CD44H is a costimulatory molecule rapidly induced by CD40L.
Dates
Type | When |
---|---|
Created | 21 years, 2 months ago (June 24, 2004, 3:56 a.m.) |
Deposited | 2 years, 1 month ago (July 25, 2023, 3:19 a.m.) |
Indexed | 4 months, 4 weeks ago (March 31, 2025, 11:04 a.m.) |
Issued | 28 years, 11 months ago (Sept. 1, 1996) |
Published | 28 years, 11 months ago (Sept. 1, 1996) |
Published Online | 28 years, 11 months ago (Sept. 1, 1996) |
Published Print | 28 years, 11 months ago (Sept. 1, 1996) |
@article{Guo_1996, title={Identification of a costimulatory molecule rapidly induced by CD40L as CD44H.}, volume={184}, ISSN={1540-9538}, url={http://dx.doi.org/10.1084/jem.184.3.955}, DOI={10.1084/jem.184.3.955}, number={3}, journal={The Journal of experimental medicine}, publisher={Rockefeller University Press}, author={Guo, Y and Wu, Y and Shinde, S and Sy, M S and Aruffo, A and Liu, Y}, year={1996}, month=sep, pages={955–961} }