Inhibition of tumor growth and metastasis with antisense oligonucleotides(Cantide) targeting hTERT in an in situ human hepatocellular carcinoma model

• 来源期刊: 中国药理学报（英文版）
• 关键词: telomerase Cantide hepatocellular carcinoma recurrence neoplasm metastasis
• 年，卷（期）: 2005,（6）
• 页码范围: 762-768
• 页数: 7页
• 语种: 英文

摘要

Aim: To evaluate the in vivo antitumor effects of Cantide and the combined effect with 5-fluorouracil. Methods: An in situ human hepatocellular carcinoma model was established in mice livers orthotopically. Drugs were administered intravenously and tumor sizes were monitored with calipers. Plasma alpha-fetoprotein (AFP) were detected by radiation immunoassay. Morphology of tumors was evaluated by hematoxylin-eosin (H&E) staining of histological sections. Human telomerase reverse transcriptase (hTERT) protein levels were detected by Western blotting. Results: Cantide significantly inhibit in situ human hepatocellular compared to the saline group in a dose-dependent manner, which included injectthe tumor in liver. Cantide was also found to prevent tumor recurrence in the liver and metastasis in the lung, showing a dose-dependent response. When Cantide was administered by iv combined with 5-fluorouracil, it resulted in a significant reduction in tumor growth compared to either agent alone treatment group. After the treatment with Cantide alone or combined with 5-fluorouracil, plasma AFP concentration decreased in a dose-dependent manner. Conclusion: These results demonstrated that Cantide was an effective antitumor antisense oligonucleotide in vivo and has the potential to be developed into a clinical anti-cancer drug.