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Induction of Alloantigen-specific Anergy in Human Peripheral Blood Mononuclear Cells by Alloantigen Stimulation with Co-stimulatory Signal Blockade
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Published on: March 14, 2011

Analysis of alloreactive helper T lymphocyte precursor frequencies. Influence of interleukin-2 produced by the

A V Reisaeter1, E Thorsby, J E Brinchmann

  • 1Institute of Transplantation Immunology, National Hospital, Oslo, Norway.

Journal of Immunological Methods
|January 16, 1996
PubMed

In the determination of alloreactive helper T lymphocyte precursor frequencies (HTLpf) by limiting dilution analysis (LDA), peripheral blood mononuclear cells (PBMC) are used as stimulating cells. Interleukin-2 (IL-2) production by stimulating T cells constitute a source of error in these assays. We found that 100-150 Gy of gamma irradiation was required to abrogate IL-2 production by stimulating PBMC. This dose of irradiation, however, greatly reduced their allostimulatory capability. Here we describe how non-irradiated PBMC, immunomagnetically depleted of T cells and thus of IL-2 producing cells, can be used as stimulators in assays to determine alloresponsive HTLpf.

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