Published in:
01-08-2012 | Translational Research and Biomarkers
Survivin-mediated Therapeutic Efficacy of Gemcitabine through Glucose-regulated Protein 78 in Hepatocellular Carcinoma
Authors:
Chin-Sheng Hung, MD, Shen-Fu Lin, MS, Hui-Hsiung Liu, MD, PhD, Li-Jen Kuo, MD, Li-Tzu Li, PhD, Hou-Yu Su, MD, Phui-Ly Liew, MD, Feng-Yen Lin, PhD, Po-Li Wei, MD, PhD, Der-Zen Liu, PhD, Yu-Jia Chang, PhD
Published in:
Annals of Surgical Oncology
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Issue 8/2012
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Abstract
Background
Survivin is an antiapoptotic molecule that is widely expressed in cancers, including hepatocellular carcinoma (HCC). Survivin has become a general therapeutic target for cancers because of its selective overexpression in a majority of tumors. However, little is known regarding the effect of survivin expression in combination with gemcitabine on HCC.
Methods
We generated survivin knockdown cells (survivin-KD) via a short interfering RNA (siRNA) technique. The antiproliferation effects of gemcitabine were determined by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, TUNEL (terminal deoxynucleotidyl transferase dUTP nick-end labeling) assay, and cell cycle evaluation.
Results
According to the MTT assay, we found that survivin-KD cells were more sensitive than parental cells and scrambled control cells to gemcitabine treatment. The apoptotic cell population increased in survivin-KD cells that were treated with gemcitabine in comparison to scrambled control cells, as observed by the cell cycle distribution and TUNEL assays. We found that survivin knockdown resulted in a reduction of glucose-regulated protein 78 (GRP78), which may be responsible for the observed increased survivin-KD cell sensitivity to gemcitabine.
Conclusions
We conclude that survivin knockdown may contribute to a therapeutic effect of gemcitabine through GRP78 on HCC cells.