Publication details

Hedgehog pathway overexpression in pancreatic cancer is abrogated by new-generation taxoid SB-T-1216

Authors

MOHELNIKOVA-DUCHONOVA B. KOCIK M. DUCHONOVA B. BRYNYCHOVA V. OLIVERIUS M. HLAVSA Jan HONSOVA E. MAZANEC Jan KALA Zdeněk OJIMA I. HUGHES D.J. DOHERTY J.E. MURRAY H.A. CROCKARD M.A. LEMSTROVA R. SOUCEK P.

Year of publication 2017
Type Article in Periodical
Magazine / Source PHARMACOGENOMICS JOURNAL
MU Faculty or unit

Faculty of Medicine

Citation
Doi http://dx.doi.org/10.1038/tpj.2016.55
Field Genetics and molecular biology
Keywords pancreatic cancer
Description The Hedgehog pathway is one of the major driver pathways in pancreatic ductal adenocarcinoma. This study investigated prognostic importance of Hedgehog signaling pathway in pancreatic cancer patients who underwent a radical resection. Tumors and adjacent non-neoplastic pancreatic tissues were obtained from 45 patients with histologically verified pancreatic cancer. The effect of experimental taxane chemotherapy on the expression of Hedgehog pathway was evaluated in vivo using a mouse xenograft model prepared using pancreatic cancer cell line Paca-44. Mice were treated by experimental Stony Brook Taxane SB-T-1216. The transcript profile of 34 Hedgehog pathway genes in patients and xenografts was assessed using quantitative PCR. The Hedgehog pathway was strongly overexpressed in pancreatic tumors and upregulation of SHH, IHH, HHAT and PTCH1 was associated with a trend toward decreased patient survival. No association of Hedgehog pathway expression with KRAS mutation status was found in tumors. Sonic hedgehog ligand was overexpressed, but all other downstream genes were downregulated by SB-T-1216 treatment in vivo. Suppression of HH pathway expression in vivo by taxane-based chemotherapy suggests a new mechanism of action for treatment of this aggressive

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