Unusual expression of IL 2 receptors and both the c-myb and c-raf oncogenes in T cell lines and clones derived from autoimmune MRL-lpr/lpr mice

Y. J. Rosenberg, T. R. Malek, D. E. Schaeffer, T. J. Santoro, G. E. Mark, A. D. Steinberg, J. D. Mountz

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Concomitant with their disease, autoimmune MRL-lpr/lpr mice develop a profound lymphadenopathy composed of an unusual dull Lyt-1+ population of T cells. To examine the unusual growth properties and origin of these T cells, as well as their potential role in disease, very rapidly growing T cell lines and clones have been developed from cultures of MRL-lpr/lpr spleen and LN cells. These were studied for growth receptors, oncogene expression, and surface markers. The results further demonstrate the unique nature of lpr-derived T cells and show that i) all lines and clones exhibit greatly elevated expression of both the c-myb and the c-raf oncogenes, ii) despite the reported defect in IL 2 receptor expression of mitogen-activated fresh MRL-lpr/lpr T cells, all long-term lines or clones bear large numbers of IL 2 receptors continuously and without stimulation, although iii) unlike slower growing IL 2-dependent lines from MRL-lpr/lpr mice, these rapidly growing lines and clones are poorly inhibited by anti-IL 2 receptor antibody. Such IL 2 receptor-bearing, nontransformated T cells that are easily maintained have been useful in growth factor studies.

Original languageEnglish (US)
Pages (from-to)3120-3123
Number of pages4
JournalJournal of Immunology
Volume134
Issue number5
StatePublished - Dec 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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