Abstract:
:To understand the nature of long-term Th immune responses, we investigated in the present study the TCRBV gene repertoire of CD4(+) T cells specific for the recall antigen tetanus toxoid (TT) in recipients of an allogeneic bone marrow transplantation (allo-BMT) at several time points after transplantation and in their BM donors. We observed that the TCR repertoire of TT-specific CD4(+) Th cells was heterogeneous, and differed between allo-BMT recipients and their respective donors. Some individuals, however, used similar TCR-complementarity-determining region (CDR) 3 motifs that could reflect recognition of and selection by similar promiscuous epitopes of TT. Longitudinal analysis of this TT-specific T cell response revealed that T cells with completely identical TCR were present at several time points after the first analysis in allo-BMT recipients, most probably reflecting long-term stability of at least part of the antigen-specific TCR repertoire. Similar stability of the TT-specific TCR repertoire in time was also noted in the allo-BMT donors. These observations reveal that within a given individual the dominant antigen-specific T cell clones persist in time in an otherwise diverse TT-specific CD4(+) T cell immune response.
journal_name
Int Immunoljournal_title
International immunologyauthors
Godthelp BC,van Tol MJ,Vossen JM,van den Elsen PJdoi
10.1093/intimm/13.4.507subject
Has Abstractpub_date
2001-04-01 00:00:00pages
507-18issue
4eissn
0953-8178issn
1460-2377journal_volume
13pub_type
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