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Recognition of Local Anesthetics by αβ+ T Cells

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Presentation on theme: "Recognition of Local Anesthetics by αβ+ T Cells"— Presentation transcript:

1 Recognition of Local Anesthetics by αβ+ T Cells
Martin P. Zanni, Salome von Greyerz, Yvonne Hari, Benno Schnyder, Werner J. Pichler  Journal of Investigative Dermatology  Volume 112, Issue 2, Pages (February 1999) DOI: /j x Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions

2 Figure 1 Local anesthetics induce a specific TCR downregulation. Clone cells and B-LCL were mixed at a 1:2 ratio in the presence or absence of indicated drugs (100?µg per ml) (A). (B) Various amounts of APC were used to study the APC dependency of the response. After 4?h cells were washed with PBS containing 1% fetal bovine serum and 0.02% NaN3 and stained with a phycoerythrin-labeled anti-CD3 and a fluoroscein-isothiocyanate-labeled anti-CD19 or anti-CD20 MoAb to exclude B-LCL. The CD3 fluorescence was analyzed on an EPICS profile II flow cytometer. Journal of Investigative Dermatology  , DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions

3 Figure 2 Possible core structure of T cell recognition by lidocaine-specific TCC OFB2. (A) Based on the data obtained with various compounds bearing different amine side chain residues a model of T cell recognition of the rather broadly reactive clone OFB2 can be outlined. Side chains recognized (+) or not recognized (–) are listed according to the data shown in Table All compounds with a tertiary amine (linear or cyclic) are recognized by clone OFB2. In contrast, primary amines never elicited a T cell response. Secondary amines can be recognized, but only if the compound bears an additional a-C-alkylation in the structure. (B) Simplified scheme postulating that the TCR of clone OFB2 transmits a proliferative signal only if two rather bulky substituents of the amine side chain are interacting. Journal of Investigative Dermatology  , DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions

4 Journal of Investigative Dermatology 1999 112, 197-204DOI: (10. 1046/j
Journal of Investigative Dermatology  , DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions

5 Journal of Investigative Dermatology 1999 112, 197-204DOI: (10. 1046/j
Journal of Investigative Dermatology  , DOI: ( /j x) Copyright © 1999 The Society for Investigative Dermatology, Inc Terms and Conditions

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