Potential role of 4-1BB in T cell activation - Comparison with the costimulatory molecule CD28

José C. Hurtado, Seung H. Kim, Karen Pollok, Zhang H. Lee, Byoung S. Kwon

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Abstract

The expression of the murine T cell Ag 4-1BB, a member of the TNF-R family, is induced by T cell activation. Previously, we and others had shown that signaling through 4-1 BB enhanced proliferative T cell responses. To investigate a potential role for the interaction of 4-1 BB with its ligand (4-1BBL) in T cell activation, we studied the ability of a soluble chimera of 4-1 BB (4-1BBFc) to interfere with proliferative responses and cytokine production in models of activation dependent in intercellular interactions. The potential blocking effect of 4-1BBFc was compared with that of the chimeric molecule CTLA-4Ig, a reagent known to interfere with the interaction of CD28 (and/or CTLA-4) with B7 costimulatory receptors. In this study, we report that 4-1BBFc partially blocked both the activation of unfractionated splenocytes triggered by soluble anti-CD3 (anti-CD3s), and the more physiologically relevant responses to alloantigen. In addition, we show that both chimeric molecules partially blocked proliferative responses and IL-2 secretion by highly purified resting T cells activated with anti-CD3s in the presence of fixed accessory cells that express B7 receptors and 4-1BBL. Furthermore, in this model system, the blocking capacity of 4-1BBFc and CTLA-4Ig appears to correlate with the relative expression of their respective cognate receptors (4-1BBL and B7) on the accessory cell. Simultaneous addition of both blocking reagents produced an additive effect in the model systems studied.

Original languageEnglish
Pages (from-to)3360-3367
Number of pages8
JournalJournal of Immunology
Volume155
Issue number7
StatePublished - 1995

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T-Lymphocytes
Ligands
Isoantigens
Interleukin-2
Cytokines

ASJC Scopus subject areas

  • Immunology

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Hurtado, J. C., Kim, S. H., Pollok, K., Lee, Z. H., & Kwon, B. S. (1995). Potential role of 4-1BB in T cell activation - Comparison with the costimulatory molecule CD28. Journal of Immunology, 155(7), 3360-3367.

Potential role of 4-1BB in T cell activation - Comparison with the costimulatory molecule CD28. / Hurtado, José C.; Kim, Seung H.; Pollok, Karen; Lee, Zhang H.; Kwon, Byoung S.

In: Journal of Immunology, Vol. 155, No. 7, 1995, p. 3360-3367.

Research output: Contribution to journalArticle

Hurtado, JC, Kim, SH, Pollok, K, Lee, ZH & Kwon, BS 1995, 'Potential role of 4-1BB in T cell activation - Comparison with the costimulatory molecule CD28', Journal of Immunology, vol. 155, no. 7, pp. 3360-3367.
Hurtado, José C. ; Kim, Seung H. ; Pollok, Karen ; Lee, Zhang H. ; Kwon, Byoung S. / Potential role of 4-1BB in T cell activation - Comparison with the costimulatory molecule CD28. In: Journal of Immunology. 1995 ; Vol. 155, No. 7. pp. 3360-3367.
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