A role for PKR in hematologic malignancies

William L. Blalock, Alberto Bavelloni, Manuela Piazzi, Irene Faenza, Lucio Cocco

Research output: Contribution to journalArticle

Abstract

The double-stranded RNA-dependent kinase PKR has been described for many years as strictly a pro-apoptotic kinase. Recent data suggest that the main purpose of this kinase is damage control and repair following stress and, if all else fails, apoptosis. Aberrant activation of PKR has been reported in numerous neurodegenerative diseases and cancer. Although a subset of myelodysplastic syndromes (MDS) and chronic lymphocytic leukemia contain low levels of PKR expression and activity, elevated PKR activity and/or expression have been detected in a wide range of hematologic malignancies, from bone marrow failure disorders to acute leukemia. With the recent findings that cancers containing elevated PKR activity are highly sensitive to PKR inhibition, we explore the role of PKR in hematologic malignancies, signal transduction pathways affected by PKR, and how PKR may contribute to leukemic transformation.

Original languageEnglish
Pages (from-to)572-591
Number of pages20
JournalJournal of Cellular Physiology
Volume223
Issue number3
DOIs
Publication statusPublished - Jun 2010

ASJC Scopus subject areas

  • Cell Biology
  • Clinical Biochemistry
  • Physiology

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