Ribback, Silvia and Sailer, Verena and Boehning, Enrico and Guenther, Julia and Merz, Jaqueline and Steinmueller, Frauke and Utpatel, Kirsten and Cigliano, Antonio and Peters, Kristin and Pilo, Maria G. and Evert, Matthias and Calvisi, Diego F. and Dombrowski, Frank (2016) The Epidermal Growth Factor Receptor (EGFR) Inhibitor Gefitinib Reduces but Does Not Prevent Tumorigenesis in Chemical and Hormonal Induced Hepatocarcinogenesis Rat Models. INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 17 (10): 1618. ISSN 1422-0067,
Full text not available from this repository. (Request a copy)Abstract
Activation of the epidermal growth factor receptor (EGFR) signaling pathway promotes the development of hepatocellular adenoma (HCA) and carcinoma (HCC). The selective EGFR inhibitor Gefitinib was found to prevent hepatocarcinogenesis in rat cirrhotic livers. Thus, Gefitinib might reduce progression of pre-neoplastic liver lesions to HCC. In short-and long-term experiments, administration of N-Nitrosomorpholine (NNM) or intrahepatic transplantation of pancreatic islets in diabetic (PTx), thyroid follicles in thyroidectomized (TTx) and ovarian fragments in ovariectomized (OTx) rats was conducted for the induction of foci of altered hepatocytes (FAH). Gefitinib was administered for two weeks (20 mg/kg) or three and nine months (10 mg/kg). In NNM-treated rats, Gefitinib administration decreased the amount of FAH when compared to controls. The amount of HCA and HCC was decreased, but development was not prevented. Upon all transplantation models, proliferative activity of FAH was lower after administration of Gefitinib in short-term experiments. Nevertheless, the burden of HCA and HCC was not changed in later stages. Thus, EGFR inhibition by Gefitinib diminishes chemical and hormonal also induced hepatocarcinogenesis in the initiation stage in the non-cirrhotic liver. However, progression to malignant hepatocellular tumors was not prevented, indicating only a limited relevance of the EGFR signaling cascade in later stages of hepatocarcinogenesis.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HUMAN HEPATOCELLULAR-CARCINOMA; PANCREATIC-ISLET TRANSPLANTS; TYROSINE KINASE INHIBITOR; DIABETIC-RATS; SIGNALING PATHWAYS; METABOLIC-CHANGES; INSULIN-RECEPTOR; CANCER-CELLS; FACTOR-ALPHA; LIVER; hepatocarcinogenesis; intraportal transplantation; epidermal growth factor receptor (EGFR); Gefitinib |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Pathologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2019 12:08 |
| Last Modified: | 24 Apr 2019 12:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4141 |
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