Abstract:
:CD27 is a lymphocyte-specific member of the TNF receptor (TNFR) family. It is a costimulatory molecule for peripheral T cells, as defined by its ability to enhance the TCR-induced proliferative response. We show here that CD27 augments TCR-induced Jun N-terminal kinase (JNK) activity in primary murine lymph node T cells. To investigate how CD27 couples to JNK, we performed a yeast two hybrid screen with the CD27 cytoplasmic tail. This revealed that CD27 directly associates with Traf-2. Transfection experiments using dominant negative Traf-2 indicated that CD27 communicates with JNK via Traf-2. These findings group CD27 together with other members of the TNFR family, TNFR-1, -2, CD30 and CD40, which have all been shown to couple to Traf proteins. Since Traf proteins have been reported to initiate an anti-apoptotic signaling pathway, our data suggest that CD27 not only regulates proliferation, but also survival of T lymphocytes.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Gravestein LA,Amsen D,Boes M,Calvo CR,Kruisbeek AM,Borst Jdoi
10.1002/(SICI)1521-4141(199807)28:07<2208::AID-IMMsubject
Has Abstractpub_date
1998-07-01 00:00:00pages
2208-16issue
7eissn
0014-2980issn
1521-4141pii
10.1002/(SICI)1521-4141(199807)28:07<2208::AID-IMMjournal_volume
28pub_type
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