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IL-4-secreting CD4+ T cells are crucial to the development of CD8+ T-cell responses against malaria liver stages.

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Affiliations

  • 1. Department of Medical and Molecular Parasitology, New York University School of Medicine, New York, New York, USA.
      Authors
    • Carvalho LH 1
    (1 author)

ORCIDs linked to this article

Nature Medicine, 01 Feb 2002, 8(2):166-170
https://doi.org/10.1038/nm0202-166 PMID: 11821901 

Abstract 

CD4+ T cells are crucial to the development of CD8+ T cell responses against hepatocytes infected with malaria parasites. In the absence of CD4+ T cells, CD8+ T cells initiate a seemingly normal differentiation and proliferation during the first few days after immunization. However, this response fails to develop further and is reduced by more than 90%, compared to that observed in the presence of CD4+ T cells. We report here that interleukin-4 (IL-4) secreted by CD4+ T cells is essential to the full development of this CD8+ T cell response. This is the first demonstration that IL-4 is a mediator of CD4/CD8 cross-talk leading to the development of immunity against an infectious pathogen.

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