Enhancement of complement-induced cell lysis: A novel mechanism for the anticancer effects of Hsp90 inhibitors

Amere Subbarao Sreedhar, Gábor Nardai, Péter Csermely

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Molecular chaperones (heat shock proteins, Hsp-s) play a pleiotropic role in immunological functions. Hsp-s participate in the presentation of peptide antigens, folding of several immunologically important proteins, such as the MHC, and in the maintenance of the activation-competent conformation of key signaling molecules (mostly serine/threonine and tyrosine kinases) of B and T cells activation. The most abundant cytoplasmic chaperone, Hsp90, is in the center of these processes. In recent years Hsp90 inhibitors emerged as very promising anticancer agents. Not surprisingly, Hsp90 inhibitors behave as immunosuppressants, and also cause an induction of superoxide production. Here we extend our previous data by showing the enhancement of complement-induced lysis of several types of tumor cells after Hsp90 inhibition. This novel mechanism may significantly contribute to the anticancer effects of Hsp90 inhibitors in vivo.

Original languageEnglish
Pages (from-to)157-161
Number of pages5
JournalImmunology letters
Volume92
Issue number1-2
DOIs
Publication statusPublished - Mar 29 2004

Keywords

  • Complement system
  • Geldanamycin
  • Heat shock proteins
  • Hsp90
  • Jurkat T lymphocytes
  • Molecular chaperones

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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