Abstract
(1) Preincubation of SKOV3 human ovarian carcinoma cells with a non-toxic dose of Geldanamycin resulted in exacerbation of hyperthermia-induced cytotoxicity and re-distribution of dying cells toward necrosis. (2) Exposure of primary human ovarian carcinoma cells to mild hyperthermia (42°C for 2 h) led, after a recovery period of 16 h, to several-fold increase in the levels of Hsp90 and ErbB2, to a moderate decrease in the levels of phospho-Erk1/2, whereas the level of β-catenin appeared to be unchanged. (3) The inhibitors of Hsp90 (Geldanamycin and Novobiocin) significantly affected the cell signaling of heat-pretreated cultures. (4) The results suggest that Hsp90 plays a pivotal role in cell response to hyperthermia. (5) A combination of Hsp90 inhibitors with hyperthermia may considerably increase the efficacy of thermotherapy.
| Original language | English |
|---|---|
| Pages (from-to) | 509-514 |
| Number of pages | 6 |
| Journal | Journal of Thermal Biology |
| Volume | 29 |
| Issue number | 7-8 SPEC. ISS. |
| DOIs | |
| State | Published - 1 Oct 2004 |
Keywords
- Apoptosis/Necrosis
- Cell signaling
- Heat shock protein 90 (Hsp90)
- Human SKOV3 and primary ovarian carcinoma cells
- Hyperthermia
- Inhibitors of Hsp90
ASJC Scopus subject areas
- Physiology
- Biochemistry
- General Agricultural and Biological Sciences
- Developmental Biology