A transgenic model to analyze the immunoregulatory role of IL-10 secreted by antigen-presenting cells

Hervé Groux, Fraņoise Cottrez, Matthieu Rouleau, Smita Mauze, Svetlana Antonenko, Stephen Hurst, Tom McNeil, Mike Bigler, Maria Grazia Roncarolo, Robert L. Coffman

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Abstract

IL-10 is a cytokine secreted by a wide variety of cells type that has pleiotropic stimulatory and suppressive activities on both lymphoid and myeloid cells in vitro. To analyze the consequences of high IL-10 secretion by APCs in immune responses, we produced transgenic mice expressing human IL- 10 directed by the MHC class II Ea promoter. Despite alterations in the development of T and B cells, no gross abnormalities were detected in peripheral lymphocyte populations or serum Ig levels. However, when immunized using conditions that give either a Th2-type or a Th1-type response, IL-10 transgenic mice failed to mount a significant T or B cell immune response to OVA. IL-10 transgenic mice were also highly susceptible to infection with intracellular pathogens like Listeria monocytogenes or Leishmania major, in contrast to IL-10 transgenic mice, where the transgene was express in T cells. Finally, the recently described stimulatory effect of IL-10 on CD8+ T cells was confirmed by the ability of IL-10 transgenic mice to limit the growth of immunogenic tumors by a CTL-mediated mechanism. These results demonstrate, that, depending on the type of immune response, IL-10 can mediate immunosuppressive or immunostimulatory activities in vivo.

Original languageEnglish
Pages (from-to)1723-1729
Number of pages7
JournalJournal of Immunology
Volume162
Issue number3
Publication statusPublished - Feb 1 1999

ASJC Scopus subject areas

  • Immunology

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    Groux, H., Cottrez, F., Rouleau, M., Mauze, S., Antonenko, S., Hurst, S., McNeil, T., Bigler, M., Roncarolo, M. G., & Coffman, R. L. (1999). A transgenic model to analyze the immunoregulatory role of IL-10 secreted by antigen-presenting cells. Journal of Immunology, 162(3), 1723-1729.