Glycerol as a chemical chaperone enhances radiation-induced apoptosis in anaplastic thyroid carcinoma cells.

Abstract:

INTRODUCTION:Anaplastic thyroid carcinoma, which is one of the most aggressive, malignant tumors in humans, results in an extremely poor prognosis despite chemotherapy and radiotherapy. The present study was designed to evaluate therapeutic effects of radiation by glycerol on p53-mutant anaplastic thyroid carcinoma cells (8305c cells). To examine the effectiveness of glycerol in radiation induced lethality for anaplastic thyroid carcinoma 8305c cells, we performed colony formation assay and apoptosis analysis. RESULTS:Apoptosis was analyzed with Hoechst 33342 staining and DNA ladder formation assay. 8305c cells became radiosensitive when glycerol was added to culture medium before X-ray irradiation. Apoptosis was induced by X-rays in the presence of glycerol. However, there was little apoptosis induced by X-ray irradiation or glycerol alone. The binding activity of whole cell extracts to bax promoter region was induced by X-rays in the presence of glycerol but not by X-rays alone. CONCLUSION:These findings suggest that glycerol is effective against radiotherapy of p53-mutant thyroid carcinomas.

journal_name

Mol Cancer

journal_title

Molecular cancer

authors

Ohnishi K,Ota I,Yane K,Takahashi A,Yuki K,Emoto M,Hosoi H,Ohnishi T

doi

10.1186/1476-4598-1-4

keywords:

subject

Has Abstract

pub_date

2002-10-04 00:00:00

pages

4

issn

1476-4598

journal_volume

1

pub_type

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