PMID: 6981749Jan 1, 1982Paper

Subpopulation of T cells sensitive to natural thymocytotoxic autoantibody (NTA) of New Zealand mice. I. Distinct cytotoxic sensitivity of functional T cell subsets to NTA and anti-thy-1 antibodies

Microbiology and Immunology
N NagataT Shirai

Abstract

NZB mice produce a natural thymocytotoxic autoantibody (NTA) capable of specifically injuring thymocytes and T cells. NTA-reactive antigen (NTA-A) shows a different density distribution among T cells, and partial killing with NTA and complement can eliminate T cells bearing NTA-A in high density. Thy-1 antigen is similar to NTA-A in this respect. To determine the effects of NTA and anti-Thy-1 on distinct functional subsets of T cells, Con A-induced suppressor T cell (Con A-Ts) activity against the allogeneic mixed lymphocyte reaction (MLR), responding T cell (TMLR) activity in the allogeneic MLR, and Con A-induced cytotoxic T cell (Con A-Tc) activity were examined simultaneously in BALB/c spleen cells before and after partial elimination of NTA- and anti-Thy-1-sensitive T cells. Treatment with NTA and complement resulted in a marked reduction in Con A-Ts activity, a significant increase in TMLR-activity and a slight and inconstant decrease in Con A-Tc activity. Since Con A-generated T's were much less sensitive to NTA, the NTA-sensitive T cells involved in Con A-Ts activity appear to be precursors or promoters of the Con A-Ts. In contrast, the precursors of Con A-Tc seem to relatively resistant to NTA. The increase in TMLR acti...Continue Reading

References

Jul 1, 1977·European Journal of Immunology·J A Frelinger
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Jul 1, 1971·Proceedings of the National Academy of Sciences of the United States of America·T Shirai, R C Mellors
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Citations

Aug 3, 1987·Journal of Immunological Methods·M H Bocchieri
Dec 1, 1989·Clinical Immunology and Immunopathology·M OhgakiT Shirai

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