Abstract | BACKGROUND/AIM: MATERIALS AND METHODS: Antitumor activity of radicicol-alone or in combination with the hsp70 inhibitor VER155008 was investigated in 8505C and CAL62 cells. RESULTS:
Radicicol decreased cell viability and Akt protein levels, and increased the percentage of dead cells and hsp70 protein levels. In PIK3CA plasmid-transfected cells, compared to cells treated with radicicol-alone, cell viability increased and cellular death decreased. In cells treated with both radicicol and VER155008, compared to cells treated with radicicol-alone, cell viability further decreased and the percentage of dead cells further increased, with a parallel decrease of the protein levels of heat shock cognate 70, Akt and survivin. CONCLUSION: Our results suggest that radicicol induces cell death mediated through PI3K/Akt signaling with modulation of hsp90 client proteins and hsp70 inhibition enhances radicicol-induced cell death with suppression of survivin in ATC cells.
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Authors | Si Hyoung Kim, Jun Goo Kang, Chul Sik Kim, Sung-Hee Ihm, Moon Gi Choi, Hyung Joon Yoo, Seong Jin Lee |
Journal | Anticancer research
(Anticancer Res)
Vol. 34
Issue 9
Pg. 4829-37
(Sep 2014)
ISSN: 1791-7530 [Electronic] Greece |
PMID | 25202064
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright© 2014 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved. |
Chemical References |
- HSP70 Heat-Shock Proteins
- Macrolides
- Purine Nucleosides
- VER 155008
- Phosphatidylinositol 3-Kinases
- Proto-Oncogene Proteins c-akt
- monorden
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Topics |
- Cell Death
(drug effects)
- Cell Line, Tumor
- HSP70 Heat-Shock Proteins
(antagonists & inhibitors, metabolism)
- Humans
- Macrolides
(pharmacology)
- Phosphatidylinositol 3-Kinases
(metabolism)
- Proto-Oncogene Proteins c-akt
(metabolism)
- Purine Nucleosides
(pharmacology)
- Signal Transduction
(drug effects)
- Thyroid Carcinoma, Anaplastic
- Thyroid Neoplasms
(metabolism)
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