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Effects of anti-Lyt-2 and anti-L3T4 monoclonal antibodies on the function of cytotoxic T lymphocyte/helper T lymphocyte hybrid T cell clones.

W L Havran and F W Fitch
J Immunol September 15, 1988, 141 (6) 1808-1812;
W L Havran
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F W Fitch
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Abstract

CTL/HTL hybrid clones provide a unique system that allows detailed analysis of the role of Lyt-2, L3T4, and other structures involved in T cell functions. We have demonstrated previously that the fusion of cloned murine CTL and helper T lymphocytes with defined specificity generated hybrid cells that expressed both Lyt-2 and L3T4 as well as two TCR. Data obtained with these hybrid clones demonstrated that cytolysis is closely linked to the CTL TCR. We have analyzed the effects of anti-Lyt-2 and anti-L3T4 as well as anti-TCR mAb on cytolysis, proliferation, and lymphokine release by a number of hybrid clones. We found that anti-Lyt-2 and anti-L3T4 mAb were able to inhibit both proliferation and lymphokine release by the hybrid clones in response to stimulation of either the CTL or helper T lymphocyte parent TCR. In contrast, only anti-Lyt-2 and anti-CTL TCR mAb were able to block cytolysis of target cells bearing the Ag recognized by the CTL TCR. These results provide further evidence that cytolysis is closely linked to the CTL TCR and that Lyt-2 and L3T4 have more than a passive role as accessory molecules on the surface of T lymphocytes.

  • Copyright © 1988 by American Association of Immunologists

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The Journal of Immunology
Vol. 141, Issue 6
15 Sep 1988
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Effects of anti-Lyt-2 and anti-L3T4 monoclonal antibodies on the function of cytotoxic T lymphocyte/helper T lymphocyte hybrid T cell clones.
W L Havran, F W Fitch
The Journal of Immunology September 15, 1988, 141 (6) 1808-1812;

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Effects of anti-Lyt-2 and anti-L3T4 monoclonal antibodies on the function of cytotoxic T lymphocyte/helper T lymphocyte hybrid T cell clones.
W L Havran, F W Fitch
The Journal of Immunology September 15, 1988, 141 (6) 1808-1812;
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Print ISSN 0022-1767        Online ISSN 1550-6606