T lymphocytes generated in the fetal and neonatal period are characterized by T cell receptor (TCR) gene rearrangements that lack N region nucleotides (fetal-type TCR). Using fetal-type TCR as a lineage marker, we show that such T cells are long-lived and persist in the periphery of adult mice. Moreover, in both neonatal and adult environments, upon encounter with self-antigens, they are less likely to be deleted. Inefficient clonal deletion could be due to the intrinsic properties of the T cells generated during this period, or to yet unknown properties of the perinatal thymus. Such anergic T cells constitute a subset that can further expand in vivo in an antigen- independent fashion, leaving open the possibility for self-aggression under the appropriate triggering conditions.
In Mls-1a mice, fetal-type beta-gene rearrangements are frequent among self-anergic V beta 6 T cells
M. Rajasekar,Y. Sirr,M. McCarty,G. Sim,Andrei Augustin
Published 1993 in Journal of Experimental Medicine
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PUBLICATION RECORD
- Publication year
1993
- Venue
Journal of Experimental Medicine
- Publication date
1993-11-01
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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