Gene expression-based chemical genomics identifies heat-shock protein 90 inhibitors as potential therapeutic drugs in cholangiocarcinoma - PubMed (original) (raw)

. 2013 Jan 15;119(2):293-303.

doi: 10.1002/cncr.27743. Epub 2012 Jul 18.

Kun-Ju Lin, Wu-Lung R Yang, Ya-Wen Kao, Tsung-Wen Chen, Shu-Chaou Chao, Peter Mu-Hsin Chang, Chun-Yu Liu, Cheng-Hwai Tzeng, Yee Chao, Ming-Han Chen, Chun-Nan Yeh, Chi-Ying F Huang

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Gene expression-based chemical genomics identifies heat-shock protein 90 inhibitors as potential therapeutic drugs in cholangiocarcinoma

Ming-Huang Chen et al. Cancer. 2013.

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Abstract

Background: Cholangiocarcinoma (CCA) is an aggressive tumor with a poor prognosis. There is no standard therapy for CCA, and novel drugs for treating refractory CCA need to be identified.

Methods: The authors hypothesized that, if a drug could reverse the gene expression signature of CCA, then it may inhibit the carcinogenesis of CCA and, hence, would be a potential therapeutic agent. Thus, the gene expression signatures from patients with CCA were queried using the bioinformatic method Connectivity Map, resulting in the enrichment of heat-shock protein 90 (HSP90) inhibitors with therapeutic potentials.

Results: Two HSP90 inhibitors, 17-AAG (tanespimycin) and the synthetic diarylisoxazole amide resorcinol NVP-AUY922, demonstrated potent antiproliferative activity in in vitro studies. In a thioacetamide-induced animal model, NVP-AUY922 also had antitumor activity and resulted in objective tumor regression. In addition, NVP-AUY922 reduced the expression of client oncoproteins involved in CCA oncogenesis and inhibited downstream proteins of both the phosphatidylinositol 3-kinase catalytic subunit α/v-akt murine thymoma viral oncogene homolog 1 protein kinase (PIK3/AKT) pathway and the v-Ki-ras2 Kirsten rat sarcoma viral oncogene/mitogen-activated protein kinase (KRAS/MAPK) pathway.

Conclusions: Preclinical data from the current study suggest that NVP-AUY922 may be an effective treatment option for patients with CCA.

Copyright © 2012 American Cancer Society.

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