The JI
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     
 

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow Request Permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Komatsu, T.
Right arrow Articles by Leskowitz, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Komatsu, T.
Right arrow Articles by Leskowitz, S.

The Journal of Immunology, Vol 130, Issue 2 579-585, Copyright © 1983 by American Association of Immunologists

ARTICLES

Hapten-specific T cell response to azobenzenearsonate-N-acetyl-L- tyrosine in the Lewis rat. II. Induction of helper activity demonstrated by TNP-haptenated ABA-peptide-Ficoll

T Komatsu, A Amsden, CY Lawn and S Leskowitz

In an effort to study T cell functions in Lewis rats immunized with ABA- N-acetyl-L-tyrosine (ABA-tyr), we developed an antigen that provides a sensitive assay of ABA-specific helper function that is read as an increase in TNP-specific plaque-forming cells (PFC). This antigen has ABA coupled to AECM-Ficoll by virtue of a tripeptide (tyr-ala-ala) spacer and TNP coupled to the AECM side chains. At subimmunogenic doses, this antigen induced 400 anti-TNP PFC/10(6) spleen cells in ABA- tyr-immunized rats. As many as 8000 PFC/10(6) spleen cells were induced with larger doses of antigen (200 micrograms). By contrast, only 490 PFC/10(6) spleen cells could be induced with 1 mg of the conventional doubly haptenated protein carriers such as ABA-BSA-TNP. Both direct and indirect PFC were induced by this antigen in primed rats. The use of this antigen and passive transfer techniques to study ABA-specific helper activity revealed some differences from ABA-specific delayed- type hypersensitivity (DTH) and in vitro proliferation, which were studied previously. Cells responsible for helper activity appeared sooner after immunization and were found most prominently in peritoneal exudates but also significantly in spleen where the cells responsible for DTH or in vitro proliferative responses were never found. By contrast, helper cells were not seen in lymph nodes, where some proliferative activity could be found. Of these three ABA-specific T cell functions, helper activity was least easily suppressed by the previously used regimens of ABA-tyr in incomplete freunds adjuvant (IFA). Moreover, helper activity appears after injection of ABA-tyr in IFA, a method that has never in our hands yielded detectable DTH or in vitro proliferative responses. Despite these differences, phenotyping with monoclonal antibodies indicated that cells responsible for helper and proliferative activities were both W3/25+ and OX8-.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Website Copyright © 1983 by The American Association of Immunologists, Inc. All rights reserved.
All Contents Copyright © 1983 by The American Association of Immunologists, Inc. All rights reserved.