Spontaneous in vivo gene transcription of interleukin-2, interleukin-3, interleukin-4, interleukin-6, interferon-gamma, interleukin-2 receptor (CD25) and proto-oncogene c-myc by rheumatoid synovial T lymphocytes - PubMed (original) (raw)

Spontaneous in vivo gene transcription of interleukin-2, interleukin-3, interleukin-4, interleukin-6, interferon-gamma, interleukin-2 receptor (CD25) and proto-oncogene c-myc by rheumatoid synovial T lymphocytes

K Waalen et al. Scand J Immunol. 1992 Dec.

Abstract

Rheumatoid synovial T lymphocytes were investigated for the presence of mRNA for the cytokines interleukin-2, -3, -4, -6, interferon-gamma, the interleukin-2 receptor (CD25) and the proto-oncogene c-myc. The isolated RNAs were analysed by dot blot and Northern blot hybridization. Our results show that synovial T lymphocytes from patients with rheumatoid arthritis (n = 12) had spontaneous in vivo gene transcription of interleukin-2 (93%), interleukin-4 (67%), interleukin-6 (92%), interleukin-2 receptor (92%) and the proto-oncogene c-myc (67%). Only a few of the RA patients had synovial T cells with increased expression of mRNA for interleukin-3 (25%) and interferon-gamma (25%). The amounts of mRNA for the various cytokines and activation molecules produced by the rheumatoid synovial T lymphocytes were in most instances comparable to those of normal peripheral blood T lymphocytes activated in vitro by the mitogen phytohaemagglutinin. The data thus indicate that the synovial T lymphocytes are activated in vivo in the majority of rheumatoid arthritis patients.

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Spontaneous in vivo gene transcription of interleukin-2, interleukin-3, interleukin-4, interleukin-6, interferon-gamma, interleukin-2 receptor (CD25) and proto-oncogene c-myc by rheumatoid synovial T lymphocytes - PubMed (original) (raw)