Protein tyrosine kinases couple the interleukin‐2 receptor to p21ras

Manuel Izquierdo, Doreen A. Cantrell

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


The T cell growth factor interleukin‐2 (IL‐2) induces p21ras activation in T lymphocytes. We have previously shown that a protein kinase C (PKC)‐mediated pathway for p21ras regulation exists in T cells and that the IL‐2 receptor (IL‐2R) can couple to p21ras independently of the presence of the PKC pathway for p21ras regulation. Our data show that in conditions where cellular protein tyrosine kinases (PTK) were efficiently down‐regulated by pretreatment with the specific PTK inhibitor herbimycin, the IL‐2‐induced activation of p21ras was blocked. Herbimycin did not inhibit the PKC‐mediated pathway for p21ras regulation. Thus, the data indicate that PTK are involved in the coupling of the IL‐2R to p21ras.

Original languageEnglish
Pages (from-to)131-135
Number of pages5
JournalEuropean Journal of Immunology
Issue number1
Publication statusPublished - Jan 1993


  • Interleukin‐2
  • p21
  • Protein tyrosine kinase

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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