Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Nam, S.Y. et al.

Regulation of lymphocyte clustering by CD30- mediated ICAM-1 up-regulation.

CD30 is expressed transiently on activated B and T lymphocytes and constitutively on several B- and T cell lymphomas. CD30 functions include participation in negative selection of thymocytes, costimulation of activated T cells, isotype switching of B cells, and regulation of the effector activity of cytotoxic lymphocytes. Although CD30 is not a marker for T helper 2 (TH2) cells, it may participate in the polarization of TH1 and TH2 cells. The pleiotropic functions of CD30 are initiated by interaction of CD30- expressing cells with other immune competent cells expressing CD30-L and providing the signals for modulation of effector cell activity. Here, we report that CD30 signals generated by anti-CD30 on activated, normal murine T cells strongly up-regulate the expression of intercellular adhesion molecule 1 (ICAM-1, CD54), and to a lesser extent, ICAM-2 (CD102). CD30 signals moreover delay the subsequent decline of ICAM expression. CD30 cross- linking did not alter the expression of CD11a/CD18 (LFA-1), the counter receptor for ICAM abundant on T cells. CD30- mediated ICAM-1 up-regulation is independent of cytokine secretion and appears to be transmitted directly through NF-kappaB activation. CD30- mediated up-regulation of ICAM-1 expression led to a significant increase in cluster formation of lymph node cells. Increased lymphocyte self-aggregation mediated by CD30 may set the stage for fraternal signaling to modulate lymphocyte function.[1]

References

Regulation of lymphocyte clustering by CD30-mediated ICAM-1 up-regulation. Nam, S.Y., Cho, K.S., Heo, Y.M., Ha, J.C., Kim, Y.H., Keun Yi, H., Han Hwang, P., Kim, H.M., Podack, E.R. Cell. Immunol. (2002) [Pubmed]

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