Abstract:
:A tumor-specific CD8+ T cell response was studied using adoptive transfer of OT-I TCR transgenic cells. Upon i.p. challenge with E.G7 tumor, OT-I cells undergo CD4+ T cell-independent expansion at the tumor site and develop lytic function. Before tumor elimination, however, they leave the peritoneal cavity (PC) and appear in the LN and spleen where they exhibit "split anergy" and cannot further proliferate to antigen. Administering anti-CTLA-4 mAb early caused sustained OT-1 expansion in the PC, and late administration caused the OT-I cells to return to the PC and further expand; in both cases, tumor was controlled. These effects required CD4+ T cells and IL-2 and appear to result from reversal of the nonresponsive state of the CD8+ T cells.
journal_name
Immunityjournal_title
Immunityauthors
Shrikant P,Khoruts A,Mescher MFdoi
10.1016/s1074-7613(00)80123-5keywords:
subject
Has Abstractpub_date
1999-10-01 00:00:00pages
483-93issue
4eissn
1074-7613issn
1097-4180pii
S1074-7613(00)80123-5journal_volume
11pub_type
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