Heat shock proteins - Modulators of apoptosis in tumour cells

E. M. Creagh, D. Sheehan, T. G. Cotter

Research output: Contribution to journalReview articlepeer-review

211 Scopus citations

Abstract

Apoptosis is a genetically programmed, physiological method of cell destruction. A variety of genes are now recognised as positive or negative regulators of this process. Expression of inducible heat shock proteins (hsp) is known to correlate with increased resistance to apoptosis induced by a range of diverse cytotoxic agents and has been implicated in chemotherapeutic resistance of tumours and carcinogenesis. Intensive research on apoptosis over the past number of years has provided significant insights into the mechanisms and molecular events that occur during this process. The modulatory effects of hsps on apoptosis are well documented, however, the mechanisms of hsp-mediated protection against apoptosis remain to be fully defined, although several hypotheses have been proposed. Elucidation of these mechanisms should reveal novel targets for manipulating the sensitivity of leukaemic cells to therapy. This review aims to explain the currently understood process of apoptosis and the effects of hsps on this process. Several proposed mechanisms for hsp protection against apoptosis and the therapeutic implications of hsps in leukaemia are also discussed.

Original languageBritish English
Pages (from-to)1161-1173
Number of pages13
JournalLeukemia
Volume14
Issue number7
DOIs
StatePublished - 2000

Keywords

  • Apoptosis
  • Hsp27
  • Hsp70
  • Leukemia

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